File Upload in WebView

Question

I have been struggling to upload files from WebView since last few days and there is no progress  I googled and implemented all suggested solutions but none works  like  solutions suggested here  and so on   Problem  I have a HTML page with the following code to upload a file  It works fine in a desktop browser like Firefox and built-in browser of emulator   AVD i e   when I click  Browse     button rendered by  element  browser opens a Dialog box where I can choose a file to upload   However  in the android 3 0 emulator   AVD  when I click on  Choose file   nothing happens  no file dialog is opened      lt form method  POST  enctype  multipart form-data  gt  File to upload   lt input type  file  name  uploadfile  gt  amp nbsp  amp nbsp   lt input type  submit  value  Press to Upload     gt  to upload the file   lt  form gt    Could anyone please suggest a possible solution at the earliest

User · Answer

I found it necessary to define public void openFileChooser ValueCallback lt Uri gt  uploadMsg  String acceptType  String capture   in Android 4 1  Then I followed Michel Olivier s solution

User · Answer

hifarrer s full solution is very helpful to me   but  I met many other problems - supporting other mime type  listing capture devices camera  video  audio recoder   opening capture device immediately ex   lt input accept  image   capture  gt        So  I made a solution that works exactly same as default web browser app    I used android-4 4 3 r1 src com android browser UploadHandler java   thanks to Rupert Rawnsley    package org mospi agatenativewebview   import java io File  import java lang reflect Method  import java net URL   import android app Activity  import android app AlertDialog  import android content ActivityNotFoundException  import android content DialogInterface  import android content Intent  import android net Uri  import android os Bundle  import android os Environment  import android provider MediaStore  import android view View  import android webkit JsResult  import android webkit ValueCallback  import android webkit WebChromeClient  import android webkit WebSettings  import android webkit WebView  import android webkit WebSettings PluginState  import android widget Toast   public class MainActivity extends Activity         Override     public void onCreate Bundle savedInstanceState            super onCreate savedInstanceState           setContentView R layout activity main           WebView webView    WebView  findViewById R id webView1            initWebView webView           webView loadUrl  http   google com       TODO input your url             private final static Object methodInvoke Object obj  String method  Class lt   gt    parameterTypes  Object   args            try               Method m   obj getClass   getMethod method  new Class     boolean class                 m invoke obj  args             catch  Exception e                e printStackTrace                       return null             private void initWebView WebView webView             WebSettings settings   webView getSettings             settings setJavaScriptEnabled true           settings setAllowFileAccess true           settings setDomStorageEnabled true           settings setCacheMode WebSettings LOAD NO CACHE           settings setLoadWithOverviewMode true           settings setUseWideViewPort true           settings setSupportZoom true              settings setPluginsEnabled true           methodInvoke settings   setPluginsEnabled   new Class     boolean class    new Object     true                settings setPluginState PluginState ON           methodInvoke settings   setPluginState   new Class     PluginState class    new Object     PluginState ON                settings setPluginsEnabled true           methodInvoke settings   setPluginsEnabled   new Class     boolean class    new Object     true                settings setAllowUniversalAccessFromFileURLs true           methodInvoke settings   setAllowUniversalAccessFromFileURLs   new Class     boolean class    new Object     true                settings setAllowFileAccessFromFileURLs true           methodInvoke settings   setAllowFileAccessFromFileURLs   new Class     boolean class    new Object     true              webView setScrollBarStyle View SCROLLBARS INSIDE OVERLAY           webView clearHistory            webView clearFormData            webView clearCache true            webView setWebChromeClient new MyWebChromeClient                webView setDownloadListener downloadListener              UploadHandler mUploadHandler        Override     protected void onActivityResult int requestCode  int resultCode  Intent intent             if  requestCode    Controller FILE SELECTED                   Chose a file from the file picker              if  mUploadHandler    null                    mUploadHandler onResult resultCode  intent                                    super onActivityResult requestCode  resultCode  intent              class MyWebChromeClient extends WebChromeClient           public MyWebChromeClient                         private String getTitleFromUrl String url                String title   url              try                   URL urlObj   new URL url                   String host   urlObj getHost                    if  host    null  amp  amp   host isEmpty                          return urlObj getProtocol             host                                    if  url startsWith  file                           String fileName   urlObj getFile                        if  fileName    null  amp  amp   fileName isEmpty                              return fileName                                                        catch  Exception e                       ignore                            return title                      Override         public boolean onJsAlert WebView view  String url  String message  final JsResult result                String newTitle   getTitleFromUrl url                new AlertDialog Builder MainActivity this  setTitle newTitle  setMessage message  setPositiveButton android R string ok  new DialogInterface OnClickListener                       Override                 public void onClick DialogInterface dialog  int which                        result confirm                                     setCancelable false  create   show                return true                 return super onJsAlert view  url  message  result                       Override         public boolean onJsConfirm WebView view  String url  String message  final JsResult result                 String newTitle   getTitleFromUrl url                new AlertDialog Builder MainActivity this  setTitle newTitle  setMessage message  setPositiveButton android R string ok  new DialogInterface OnClickListener                       Override                 public void onClick DialogInterface dialog  int which                        result confirm                                     setNegativeButton android R string cancel  new DialogInterface OnClickListener                     public void onClick DialogInterface dialog  int which                        result cancel                                     setCancelable false  create   show                return true                  return super onJsConfirm view  url  message  result                         Android 2 x         public void openFileChooser ValueCallback lt Uri gt  uploadMsg                openFileChooser uploadMsg                             Android 3 0         public void openFileChooser ValueCallback lt Uri gt  uploadMsg  String acceptType                openFileChooser uploadMsg       filesystem                          Android 4 1         public void openFileChooser ValueCallback lt Uri gt  uploadMsg  String acceptType  String capture                mUploadHandler   new UploadHandler new Controller                 mUploadHandler openFileChooser uploadMsg  acceptType  capture                         Android 4 4  4 4 1  4 4 2            openFileChooser function is not called on Android 4 4  4 4 1  4 4 2             you may use your own java script interface or other hybrid framework                        Android 5 0 1         public boolean onShowFileChooser                  WebView webView  ValueCallback lt Uri   gt  filePathCallback                  FileChooserParams fileChooserParams                 String acceptTypes     fileChooserParams getAcceptTypes                 String acceptType                   for  int i   0  i  lt  acceptTypes length     i                    if  acceptTypes i     null  amp  amp  acceptTypes i  length      0                      acceptType    acceptTypes i                                   if  acceptType length      0                  acceptType                       final ValueCallback lt Uri   gt  finalFilePathCallback   filePathCallback               ValueCallback lt Uri gt  vc   new ValueCallback lt Uri gt                        Override                 public void onReceiveValue Uri value                         Uri   result                      if  value    null                          result   new Uri   value                       else                         result   null                       finalFilePathCallback onReceiveValue result                                                  openFileChooser vc  acceptType   filesystem                  return true                       class Controller           final static int FILE SELECTED   4           Activity getActivity                 return MainActivity this                          copied from android-4 4 3 r1 src com android browser UploadHandler java                                                                                           Copyright  C  2010 The Android Open Source Project               Licensed under the Apache License  Version 2 0  the  License           you may not use this file except in compliance with the License         You may obtain a copy of the License at                    http   www apache org licenses LICENSE-2 0               Unless required by applicable law or agreed to in writing  software        distributed under the License is distributed on an  AS IS  BASIS         WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND  either express or implied         See the License for the specific language governing permissions and        limitations under the License                  package com android browser                import android app Activity         import android content ActivityNotFoundException         import android content Intent         import android net Uri         import android os Environment         import android provider MediaStore         import android webkit ValueCallback         import android widget Toast                import java io File         import java util Vector                             Handle the file upload callbacks from WebView here                  public class UploadHandler        class UploadHandler                         The Object used to inform the WebView of the file to upload                      private ValueCallback lt Uri gt  mUploadMessage          private String mCameraFilePath          private boolean mHandled          private boolean mCaughtActivityNotFoundException          private Controller mController          public UploadHandler Controller controller                mController   controller                    String getFilePath                 return mCameraFilePath                    boolean handled                 return mHandled                    void onResult int resultCode  Intent intent                if  resultCode    Activity RESULT CANCELED  amp  amp  mCaughtActivityNotFoundException                       Couldn t resolve an activity  we are going to try again so skip                    this result                  mCaughtActivityNotFoundException   false                  return                            Uri result   intent    null    resultCode    Activity RESULT OK   null                       intent getData                   As we ask the camera to save the result of the user taking                a picture  the camera application does not return anything other                than RESULT OK  So we need to check whether the file we expected                was written to disk in the in the case that we                did not get an intent returned but did get a RESULT OK  If it was                 we assume that this result has came back from the camera              if  result    null  amp  amp  intent    null  amp  amp  resultCode    Activity RESULT OK                    File cameraFile   new File mCameraFilePath                   if  cameraFile exists                          result   Uri fromFile cameraFile                          Broadcast to the media scanner that we have a new photo                        so it will be added into the gallery for the user                      mController getActivity   sendBroadcast                              new Intent Intent ACTION MEDIA SCANNER SCAN FILE  result                                                mUploadMessage onReceiveValue result               mHandled   true              mCaughtActivityNotFoundException   false                    void openFileChooser ValueCallback lt Uri gt  uploadMsg  String acceptType  String capture                final String imageMimeType    image                 final String videoMimeType    video                 final String audioMimeType    audio                 final String mediaSourceKey    capture               final String mediaSourceValueCamera    camera               final String mediaSourceValueFileSystem    filesystem               final String mediaSourceValueCamcorder    camcorder               final String mediaSourceValueMicrophone    microphone                  According to the spec  media source can be  filesystem  or  camera  or  camcorder                 or  microphone  and the default value should be  filesystem               String mediaSource   mediaSourceValueFileSystem              if  mUploadMessage    null                       Already a file picker operation in progress                  return                            mUploadMessage   uploadMsg                 Parse the accept type              String params     acceptType split                   String mimeType   params 0               if  capture length    gt  0                    mediaSource   capture                            if  capture equals mediaSourceValueFileSystem                        To maintain backwards compatibility with the previous implementation                    of the media capture API  if the value of the  capture  attribute is                     filesystem   we should examine the accept-type for a MIME type that                    may specify a different capture value                  for  String p   params                        String   keyValue   p split                           if  keyValue length    2                               Process key value parameters                          if  mediaSourceKey equals keyValue 0                                  mediaSource   keyValue 1                                                                                                 Ensure it is not still set from a previous upload              mCameraFilePath   null              if  mimeType equals imageMimeType                     if  mediaSource equals mediaSourceValueCamera                            Specified  image    and requested the camera  so go ahead and launch the                        camera directly                      startActivity createCameraIntent                         return                    else                          Specified just  image     capture filesystem  or an invalid capture parameter                         In all these cases we show a traditional picker filetered on accept type                        so launch an intent for both the Camera and image   OPENABLE                      Intent chooser   createChooserIntent createCameraIntent                         chooser putExtra Intent EXTRA INTENT  createOpenableIntent imageMimeType                        startActivity chooser                       return                                  else if  mimeType equals videoMimeType                     if  mediaSource equals mediaSourceValueCamcorder                            Specified  video    and requested the camcorder  so go ahead and launch the                        camcorder directly                      startActivity createCamcorderIntent                         return                   else                          Specified just  video     capture filesystem or an invalid capture parameter                         In all these cases we show an intent for the traditional file picker  filtered                        on accept type so launch an intent for both camcorder and video   OPENABLE                      Intent chooser   createChooserIntent createCamcorderIntent                         chooser putExtra Intent EXTRA INTENT  createOpenableIntent videoMimeType                        startActivity chooser                       return                                  else if  mimeType equals audioMimeType                     if  mediaSource equals mediaSourceValueMicrophone                            Specified  audio    and requested microphone  so go ahead and launch the sound                        recorder                      startActivity createSoundRecorderIntent                         return                    else                          Specified just  audio      capture filesystem of an invalid capture parameter                         In all these cases so go ahead and launch an intent for both the sound                        recorder and audio   OPENABLE                      Intent chooser   createChooserIntent createSoundRecorderIntent                         chooser putExtra Intent EXTRA INTENT  createOpenableIntent audioMimeType                        startActivity chooser                       return                                                 No special handling based on the accept type was necessary  so trigger the default                file upload chooser              startActivity createDefaultOpenableIntent                       private void startActivity Intent intent                try                   mController getActivity   startActivityForResult intent  Controller FILE SELECTED                 catch  ActivityNotFoundException e                       No installed app was able to handle the intent that                    we sent  so fallback to the default file upload control                  try                       mCaughtActivityNotFoundException   true                      mController getActivity   startActivityForResult createDefaultOpenableIntent                                Controller FILE SELECTED                     catch  ActivityNotFoundException e2                           Nothing can return us a file  so file upload is effectively disabled                      Toast makeText mController getActivity    R string uploads disabled                              Toast LENGTH LONG  show                                                      private Intent createDefaultOpenableIntent                    Create and return a chooser with the default OPENABLE                actions including the camera  camcorder and sound                recorder where available              Intent i   new Intent Intent ACTION GET CONTENT               i addCategory Intent CATEGORY OPENABLE               i setType                     Intent chooser   createChooserIntent createCameraIntent    createCamcorderIntent                        createSoundRecorderIntent                 chooser putExtra Intent EXTRA INTENT  i               return chooser                    private Intent createChooserIntent Intent    intents                Intent chooser   new Intent Intent ACTION CHOOSER               chooser putExtra Intent EXTRA INITIAL INTENTS  intents               chooser putExtra Intent EXTRA TITLE                      mController getActivity   getResources                                getString R string choose upload                return chooser                    private Intent createOpenableIntent String type                Intent i   new Intent Intent ACTION GET CONTENT               i addCategory Intent CATEGORY OPENABLE               i setType type               return i                    private Intent createCameraIntent                 Intent cameraIntent   new Intent MediaStore ACTION IMAGE CAPTURE               File externalDataDir   Environment getExternalStoragePublicDirectory                      Environment DIRECTORY DCIM               File cameraDataDir   new File externalDataDir getAbsolutePath                         File separator    browser-photos                cameraDataDir mkdirs                mCameraFilePath   cameraDataDir getAbsolutePath     File separator                       System currentTimeMillis       jpg               cameraIntent putExtra MediaStore EXTRA OUTPUT  Uri fromFile new File mCameraFilePath                 return cameraIntent                    private Intent createCamcorderIntent                 return new Intent MediaStore ACTION VIDEO CAPTURE                     private Intent createSoundRecorderIntent                 return new Intent MediaStore Audio Media RECORD SOUND ACTION                       additional string resoruce of res values string xml     lt string name  uploads disabled  gt File uploads are disabled  lt  string gt   lt string name  choose upload  gt Choose file for upload lt  string gt    If you are using proguard  you may need below option in proguard-project txt    -keepclassmembers class   extends android webkit WebChromeClient      public void openFileChooser           UPDATE  1  2015 09 09   adds code for Android 5 0 1 compatability

User · Answer

This is work for me  Also work for Nougat and Marshmallow    import android Manifest  import android annotation SuppressLint  import android app Activity  import android content Intent  import android content pm PackageManager  import android content res Configuration  import android net Uri  import android os Build  import android os Bundle  import android os Environment  import android provider MediaStore  import android support annotation NonNull  import android support v4 app ActivityCompat  import android support v4 content ContextCompat  import android support v7 app AppCompatActivity  import android util Log  import android view KeyEvent  import android view View  import android webkit ValueCallback  import android webkit WebChromeClient  import android webkit WebSettings  import android webkit WebView  import android webkit WebViewClient  import android widget Toast   import java io File  import java io IOException  import java text SimpleDateFormat  import java util Date   public class MainActivity extends AppCompatActivity       private static final String TAG   MainActivity class getSimpleName        private final static int FCR   1      WebView webView      private String mCM      private ValueCallback lt Uri gt  mUM      private ValueCallback lt Uri   gt  mUMA        Override     protected void onActivityResult int requestCode  int resultCode  Intent intent            super onActivityResult requestCode  resultCode  intent            if  Build VERSION SDK INT  gt   21                Uri   results   null                 Check if response is positive             if  resultCode    Activity RESULT OK                    if  requestCode    FCR                         if  null    mUMA                            return                                            if  intent    null                              Capture Photo if no image available                         if  mCM    null                                results   new Uri   Uri parse mCM                                                    else                           String dataString   intent getDataString                            if  dataString    null                                results   new Uri   Uri parse dataString                                                                                                mUMA onReceiveValue results               mUMA   null            else                if  requestCode    FCR                    if  null    mUM  return                  Uri result   intent    null    resultCode    RESULT OK   null   intent getData                    mUM onReceiveValue result                   mUM   null                                      SuppressLint   SetJavaScriptEnabled    WrongViewCast         Override     protected void onCreate Bundle savedInstanceState            super onCreate savedInstanceState           setContentView R layout activity main            if  Build VERSION SDK INT  gt   23  amp  amp   ContextCompat checkSelfPermission this  Manifest permission WRITE EXTERNAL STORAGE     PackageManager PERMISSION GRANTED    ContextCompat checkSelfPermission this  Manifest permission CAMERA     PackageManager PERMISSION GRANTED                 ActivityCompat requestPermissions MainActivity this  new String   Manifest permission WRITE EXTERNAL STORAGE  Manifest permission CAMERA   1                      webView    WebView  findViewById R id ifView           assert webView    null           WebSettings webSettings   webView getSettings            webSettings setJavaScriptEnabled true           webSettings setAllowFileAccess true            if  Build VERSION SDK INT  gt   21                webSettings setMixedContentMode 0               webView setLayerType View LAYER TYPE HARDWARE  null             else if  Build VERSION SDK INT  gt   19                webView setLayerType View LAYER TYPE HARDWARE  null             else if  Build VERSION SDK INT  lt  19                webView setLayerType View LAYER TYPE SOFTWARE  null                      webView setWebViewClient new Callback             webView loadUrl  https   infeeds com             webView setWebChromeClient new WebChromeClient                    For Android 3 0              public void openFileChooser ValueCallback lt Uri gt  uploadMsg                     mUM   uploadMsg                  Intent i   new Intent Intent ACTION GET CONTENT                   i addCategory Intent CATEGORY OPENABLE                   i setType                         MainActivity this startActivityForResult Intent createChooser i   File Chooser    FCR                                 For Android 3 0   above method not supported in some android 3  versions  in such case we use this             public void openFileChooser ValueCallback uploadMsg  String acceptType                     mUM   uploadMsg                  Intent i   new Intent Intent ACTION GET CONTENT                   i addCategory Intent CATEGORY OPENABLE                   i setType                         MainActivity this startActivityForResult                          Intent createChooser i   File Browser                            FCR                                For Android 4 1              public void openFileChooser ValueCallback lt Uri gt  uploadMsg  String acceptType  String capture                     mUM   uploadMsg                  Intent i   new Intent Intent ACTION GET CONTENT                   i addCategory Intent CATEGORY OPENABLE                   i setType                         MainActivity this startActivityForResult Intent createChooser i   File Chooser    MainActivity FCR                                For Android 5 0              public boolean onShowFileChooser                      WebView webView  ValueCallback lt Uri   gt  filePathCallback                      WebChromeClient FileChooserParams fileChooserParams                     if  mUMA    null                        mUMA onReceiveValue null                                      mUMA   filePathCallback                  Intent takePictureIntent   new Intent MediaStore ACTION IMAGE CAPTURE                   if  takePictureIntent resolveActivity MainActivity this getPackageManager       null                         File photoFile   null                       try                           photoFile   createImageFile                            takePictureIntent putExtra  PhotoPath   mCM                         catch  IOException ex                            Log e TAG   Image file creation failed   ex                                             if  photoFile    null                            mCM    file     photoFile getAbsolutePath                            takePictureIntent putExtra MediaStore EXTRA OUTPUT  Uri fromFile photoFile                          else                           takePictureIntent   null                                                           Intent contentSelectionIntent   new Intent Intent ACTION GET CONTENT                   contentSelectionIntent addCategory Intent CATEGORY OPENABLE                   contentSelectionIntent setType                         Intent   intentArray                   if  takePictureIntent    null                        intentArray   new Intent   takePictureIntent                     else                       intentArray   new Intent 0                                      Intent chooserIntent   new Intent Intent ACTION CHOOSER                   chooserIntent putExtra Intent EXTRA INTENT  contentSelectionIntent                   chooserIntent putExtra Intent EXTRA TITLE   Image Chooser                    chooserIntent putExtra Intent EXTRA INITIAL INTENTS  intentArray                   startActivityForResult chooserIntent  FCR                    return true                                          Create an image file     private File createImageFile   throws IOException             SuppressLint  SimpleDateFormat   String timeStamp   new SimpleDateFormat  yyyyMMdd HHmmss   format new Date             String imageFileName    img     timeStamp                File storageDir   Environment getExternalStoragePublicDirectory Environment DIRECTORY PICTURES           return File createTempFile imageFileName    jpg   storageDir               Override     public boolean onKeyDown int keyCode   NonNull KeyEvent event             if  event getAction      KeyEvent ACTION DOWN                 switch  keyCode                    case KeyEvent KEYCODE BACK                       if  webView canGoBack                              webView goBack                          else                           finish                                               return true                                   return super onKeyDown keyCode  event               Override     public void onConfigurationChanged Configuration newConfig            super onConfigurationChanged newConfig              public class Callback extends WebViewClient           public void onReceivedError WebView view  int errorCode  String description  String failingUrl                Toast makeText getApplicationContext     Failed loading app    Toast LENGTH SHORT  show

User · Answer

Kotlin solution for Android 8   private var mUploadMessage  ValueCallback lt Uri gt     null private var uploadMessage  ValueCallback lt Array lt Uri gt  gt     null   Constants   const val FILECHOOSER RESULTCODE   1 const val REQUEST SELECT FILE   100   WebView setup   webView webChromeClient   object   WebChromeClient             override fun onPermissionRequest request  PermissionRequest                 Log d  MainActivity    onPermissionRequest               requestPermission request                         For Android 3 0          fun openFileChooser uploadMsg  ValueCallback lt   gt   acceptType  String                mUploadMessage   uploadMsg as ValueCallback lt Uri gt              val i   Intent Intent ACTION GET CONTENT              i addCategory Intent CATEGORY OPENABLE              i type                     this MainActivity startActivityForResult                      Intent createChooser i   File Browser                        FILECHOOSER RESULTCODE                       For Android 4 1         fun openFileChooser uploadMsg  ValueCallback lt Uri gt   acceptType  String  capture  String                mUploadMessage   uploadMsg             val i   Intent Intent ACTION GET CONTENT              i addCategory Intent CATEGORY OPENABLE              i type    image                this MainActivity startActivityForResult Intent createChooser i   File Chooser    FILECHOOSER RESULTCODE                      protected fun openFileChooser uploadMsg  ValueCallback lt Uri gt                 mUploadMessage   uploadMsg             val intent   Intent Intent ACTION GET CONTENT              intent addCategory Intent CATEGORY OPENABLE              intent type                     startActivityForResult Intent createChooser intent   File Chooser    FILECHOOSER RESULTCODE                     override fun onShowFileChooser webView  WebView   filePathCallback  ValueCallback lt Array lt Uri gt  gt    fileChooserParams  FileChooserParams    Boolean               uploadMessage  onReceiveValue null              uploadMessage   null              uploadMessage   filePathCallback              val intent   fileChooserParams   createIntent               try                   startActivityForResult intent  REQUEST SELECT FILE                catch  e  ActivityNotFoundException                    uploadMessage   null                 Toast makeText applicationContext   Cannot Open File Chooser   Toast LENGTH LONG  show                   return false                            return true                    And the onAcrtivityResult part   override fun onActivityResult requestCode  Int  resultCode  Int  data  Intent         if  Build VERSION SDK INT  gt   Build VERSION CODES LOLLIPOP            if  requestCode     REQUEST SELECT FILE                if  uploadMessage    null                  return             print  result code       resultCode              var results  Array lt Uri gt     WebChromeClient FileChooserParams parseResult resultCode  data              uploadMessage  onReceiveValue results              uploadMessage   null                 else if  requestCode     FILECHOOSER RESULTCODE            if  null    mUploadMessage              return            Use MainActivity RESULT OK if you re implementing WebView inside Fragment            Use RESULT OK only if you re implementing WebView inside an Activity         val result   if  intent    null    resultCode     RESULT OK  null else intent data         mUploadMessage  onReceiveValue result          mUploadMessage   null       else         Toast makeText applicationContext   Failed to Upload Image   Toast LENGTH LONG  show       Please  pay attention that our intent variable called  data

User · Answer

Google s own browser offers such a comprehensive solution to this problem that it warrants it s own class   openFileChooser implementation in Android 4 0 4  UploadHandler class in Android 4 0 4

User · Answer

Found a SOLUTION which works for me  Add one more rule in the file proguard-android txt   -keepclassmembers class   extends android webkit WebChromeClient        public void openFileChooser

User · Answer

Working Method from HONEYCOMB  API 11  to Oreo API 27   Not Tested on Pie 9 0  static WebView mWebView  private ValueCallback lt Uri gt  mUploadMessage  public ValueCallback lt Uri   gt  uploadMessage  public static final int REQUEST SELECT FILE   100  private final static int FILECHOOSER RESULTCODE   1   Modified onActivityResult    Override public void onActivityResult int requestCode  int resultCode  Intent intent        if Build VERSION SDK INT  gt   Build VERSION CODES LOLLIPOP                if  requestCode    REQUEST SELECT FILE                        if  uploadMessage    null                  return              uploadMessage onReceiveValue WebChromeClient FileChooserParams parseResult resultCode  intent                uploadMessage   null                      else if  requestCode    FILECHOOSER RESULTCODE                if  null    mUploadMessage              return         Use MainActivity RESULT OK if you re implementing WebView inside Fragment        Use RESULT OK only if you re implementing WebView inside an Activity         Uri result   intent    null    resultCode    MainActivity RESULT OK   null   intent getData            mUploadMessage onReceiveValue result           mUploadMessage   null            else         Toast makeText getActivity   getApplicationContext     quot Failed to Upload Image quot   Toast LENGTH LONG  show       Now in onCreate   or onCreateView   paste the following code     WebSettings mWebSettings   mWebView getSettings        mWebSettings setJavaScriptEnabled true       mWebSettings setSupportZoom false       mWebSettings setAllowFileAccess true       mWebSettings setAllowContentAccess true    mWebView setWebChromeClient new WebChromeClient            For 3 0  Devices  Start         onActivityResult attached before constructor     protected void openFileChooser ValueCallback uploadMsg  String acceptType                mUploadMessage   uploadMsg          Intent i   new Intent Intent ACTION GET CONTENT           i addCategory Intent CATEGORY OPENABLE           i setType  quot image   quot            startActivityForResult Intent createChooser i   quot File Browser quot    FILECHOOSER RESULTCODE                     For Lollipop 5 0  Devices     public boolean onShowFileChooser WebView mWebView  ValueCallback lt Uri   gt  filePathCallback  WebChromeClient FileChooserParams fileChooserParams                if  uploadMessage    null                uploadMessage onReceiveValue null               uploadMessage   null                     uploadMessage   filePathCallback           Intent intent   fileChooserParams createIntent            try                       startActivityForResult intent  REQUEST SELECT FILE             catch  ActivityNotFoundException e                        uploadMessage   null              Toast makeText getActivity   getApplicationContext     quot Cannot Open File Chooser quot   Toast LENGTH LONG  show                return false                    return true                   For Android 4 1 only     protected void openFileChooser ValueCallback lt Uri gt  uploadMsg  String acceptType  String capture                mUploadMessage   uploadMsg          Intent intent   new Intent Intent ACTION GET CONTENT           intent addCategory Intent CATEGORY OPENABLE           intent setType  quot image   quot            startActivityForResult Intent createChooser intent   quot File Browser quot    FILECHOOSER RESULTCODE              protected void openFileChooser ValueCallback lt Uri gt  uploadMsg                mUploadMessage   uploadMsg          Intent i   new Intent Intent ACTION GET CONTENT           i addCategory Intent CATEGORY OPENABLE           i setType  quot image   quot            startActivityForResult Intent createChooser i   quot File Chooser quot    FILECHOOSER RESULTCODE

User · Answer

In KitKat you can use the Storage Access Framework   Storage Access Framework   Writing a Client App

User · Answer

Ive actually managed to get the file picker to appear in Kitkat  to select a image and to get the filepath in activity result but the only thing that im not able to  fix   cause this workaround  is to make the input filed to fill out with file data   Does anyone know any way how to access the input-field from a activity   Am using this example comment  Is just this last piece  the last brick in the wall that i just have to put into right place  tho i could trigger upload of image file directly from code   UPDATE  1  Im no hardcore Android dev so i ll show code on newbie level  Im creating a new Activity in already existing Activity  Manifest part   lt uses-permission android name  android permission INTERNET   gt   lt uses-permission android name  android permission READ EXTERNAL STORAGE   gt   lt application android label  TestApp  gt    lt activity android name   BrowseActivity  gt  lt  activity gt   lt  application gt    Am creating my BrowseActivity class from this example answer  The WebChromeClient   instance basically looks the same  except last piece  triggering the picker UI part     private final static int FILECHOOSER RESULTCODE 1    private final static int KITKAT RESULTCODE   2           The new WebChromeClient   looks pretty much the same  except one piece     WebChromeClient chromeClient   new WebChromeClient             For Android 3 0      public void openFileChooser ValueCallback lt Uri gt  uploadMsg       Default code                For Android 3 0      public void openFileChooser  ValueCallback uploadMsg  String acceptType        Default code               For Android 4 1  also default but it ll be as example     public void openFileChooser ValueCallback lt Uri gt  uploadMsg  String acceptType  String capture           mUploadMessage   uploadMsg          Intent i   new Intent Intent ACTION GET CONTENT           i addCategory Intent CATEGORY OPENABLE           i setType                 BrowseActivity this startActivityForResult Intent createChooser i   File Chooser    BrowseActivity FILECHOOSER RESULTCODE                    The new code     public void showPicker  ValueCallback lt Uri gt  uploadMsg                 Here is part of the issue  the uploadMsg is null since it is not triggered from Android         mUploadMessage   uploadMsg           Intent i   new Intent Intent ACTION GET CONTENT           i addCategory Intent CATEGORY OPENABLE           i setType                 BrowseActivity this startActivityForResult Intent createChooser i   File Chooser    BrowseActivity KITKAT RESULTCODE            And some more stuff    web   new WebView this      Notice this part  setting chromeClient as js interface is just lazy web getSettings   setJavaScriptEnabled true   web addJavascriptInterface chromeClient   jsi     web getSettings   setAllowFileAccess true   web getSettings   setAllowContentAccess true   web clearCache true   web loadUrl   http   as3breeze com upload html     web setWebViewClient new myWebClient     web setWebChromeClient chromeClient      Override protected void onActivityResult int requestCode  int resultCode  Intent intent        Log d  Result       requestCode     -     resultCode       -      intent      -     mUploadMessage         if  null    intent  return        Uri result   null        if requestCode  FILECHOOSER RESULTCODE                    Log d  Result   Old android              if  null    mUploadMessage  return            result   intent    null    resultCode    RESULT OK   null    intent getData              mUploadMessage onReceiveValue result             mUploadMessage   null          else if  requestCode    KITKAT RESULTCODE              Log d  Result   Kitkat android              result   intent getData              final int takeFlags   intent getFlags    amp   Intent FLAG GRANT READ URI PERMISSION    Intent FLAG GRANT WRITE URI PERMISSION             String path   getPath  this  result             File selectedFile   new File path      I used you example with a bit of editing so thought i would share  here i added a method to upload the file to the webserver File selectedFile   new File path                 UploadFile selectedFile               mUploadMessage onReceiveValue  Uri parse selectedFile toString                    Now we have the file but since mUploadMessage was null  it gets errors             public void UploadFile File selectedFile        Random rnd   new Random        String sName    File    rnd nextInt 999999    selectedFile getAbsolutePath   substring selectedFile getAbsolutePath   lastIndexOf            UploadedFileName   sName      uploadFile   selectedFile      if  progressBar    null  amp  amp  progressBar isShowing                  progressBar dismiss              prepare for a progress bar dialog     progressBar   new ProgressDialog mContext       progressBar setCancelable true       progressBar setMessage  Uploading File        progressBar setProgressStyle ProgressDialog STYLE SPINNER                   progressBar show        new Thread              public void run                          int serverResponseCode              String serverResponseMessage              HttpURLConnection connection   null              DataOutputStream outputStream   null              DataInputStream inputStream   null              String pathToOurFile   uploadFile getAbsolutePath                String urlServer    http   serveraddress Scripts UploadHandler php name    UploadedFileName              String lineEnd     r n               String twoHyphens    --               String boundary                          int bytesRead  bytesAvailable  bufferSize              byte   buffer              int maxBufferSize   1 1024 1024               try                               FileInputStream fileInputStream   new FileInputStream uploadFile                    URL url   new URL urlServer                   connection    HttpURLConnection  url openConnection                    Log i  File   urlServer                       Allow Inputs  amp amp  Outputs                  connection setDoInput true                   connection setDoOutput true                   connection setUseCaches false                       Set HTTP method to POST                  connection setRequestMethod  POST                     connection setRequestProperty  Connection    Keep-Alive                    connection setRequestProperty  Content-Type    multipart form-data boundary   boundary                   Log i  File    Open conn                     outputStream   new DataOutputStream  connection getOutputStream                       outputStream writeBytes twoHyphens   boundary   lineEnd                   outputStream writeBytes  Content-Disposition  form-data  name   uploadedfile   filename       pathToOurFile         lineEnd                   outputStream writeBytes lineEnd                   Log i  File    write bytes                     bytesAvailable   fileInputStream available                    bufferSize   Math min bytesAvailable  maxBufferSize                   buffer   new byte bufferSize                   Log i  File    available      fileInputStream available                         Read file                 bytesRead   fileInputStream read buffer  0  bufferSize                    Log i  file    Bytes Read      bytesRead                   while  bytesRead  gt  0                                        outputStream write buffer  0  bufferSize                       bytesAvailable   fileInputStream available                        bufferSize   Math min bytesAvailable  maxBufferSize                       bytesRead   fileInputStream read buffer  0  bufferSize                                      outputStream writeBytes lineEnd                   outputStream writeBytes twoHyphens   boundary   twoHyphens   lineEnd                       Responses from the server  code and message                  serverResponseCode   connection getResponseCode                    serverResponseMessage   connection getResponseMessage                    Log i  file repsonse   serverResponseMessage      once the file is uploaded call a javascript function to verify the user wants to save the image                 progressBar dismiss                    runOnUiThread new Runnable                                            Override                     public void run                                                  Log i  start    File name      UploadedFileName                           WebView myWebView    WebView  findViewById R id webview                           myWebView loadUrl  javascript CheckImage      UploadedFileName                                                                      fileInputStream close                    outputStream flush                    outputStream close                              catch  Exception ex                                Log i  exception    Error      ex toString                                                  start         Lastly  some more code to get the actual file path  code found on SO  ive added post url in comments as well so the author gets credits for his work            Get a file path from a Uri  This will get the the path for Storage Access    Framework Documents  as well as the  data field for the MediaStore and    other file-based ContentProviders         param context The context      param uri The Uri to query      author paulburke     source https   stackoverflow com a 20559175      TargetApi Build VERSION CODES KITKAT  public static String getPath final Context context  final Uri uri         final boolean isKitKat   Build VERSION SDK INT  gt   Build VERSION CODES KITKAT          DocumentProvider     if  isKitKat  amp  amp  DocumentsContract isDocumentUri context  uri                ExternalStorageProvider         if  isExternalStorageDocument uri                 final String docId   DocumentsContract getDocumentId uri               final String   split   docId split                   final String type   split 0                if   primary  equalsIgnoreCase type                     return Environment getExternalStorageDirectory           split 1                                 TODO handle non-primary volumes                      DownloadsProvider         else if  isDownloadsDocument uri                  final String id   DocumentsContract getDocumentId uri               final Uri contentUri   ContentUris withAppendedId                      Uri parse  content   downloads public downloads    Long valueOf id                 return getDataColumn context  contentUri  null  null                        MediaProvider         else if  isMediaDocument uri                 final String docId   DocumentsContract getDocumentId uri               final String   split   docId split                   final String type   split 0                Uri contentUri   null              if   image  equals type                     contentUri   MediaStore Images Media EXTERNAL CONTENT URI                else if   video  equals type                     contentUri   MediaStore Video Media EXTERNAL CONTENT URI                else if   audio  equals type                     contentUri   MediaStore Audio Media EXTERNAL CONTENT URI                             final String selection     id                 final String   selectionArgs   new String                         split 1                              return getDataColumn context  contentUri  selection  selectionArgs                          MediaStore  and general      else if   content  equalsIgnoreCase uri getScheme               return getDataColumn context  uri  null  null                File     else if   file  equalsIgnoreCase uri getScheme               return uri getPath               return null            Get the value of the data column for this Uri  This is useful for    MediaStore Uris  and other file-based ContentProviders         param context The context      param uri The Uri to query      param selection  Optional  Filter used in the query      param selectionArgs  Optional  Selection arguments used in the query      return The value of the  data column  which is typically a file path      source https   stackoverflow com a 20559175     public static String getDataColumn Context context  Uri uri  String selection                                     String   selectionArgs         Cursor cursor   null      final String column     data       final String   projection                 column             try           cursor   context getContentResolver   query uri  projection  selection  selectionArgs                  null           if  cursor    null  amp  amp  cursor moveToFirst                  final int column index   cursor getColumnIndexOrThrow column               return cursor getString column index                   finally           if  cursor    null              cursor close              return null              param uri The Uri to check      return Whether the Uri authority is ExternalStorageProvider      source https   stackoverflow com a 20559175     public static boolean isExternalStorageDocument Uri uri        return  com android externalstorage documents  equals uri getAuthority                param uri The Uri to check      return Whether the Uri authority is DownloadsProvider      source https   stackoverflow com a 20559175     public static boolean isDownloadsDocument Uri uri        return  com android providers downloads documents  equals uri getAuthority                param uri The Uri to check      return Whether the Uri authority is MediaProvider      source https   stackoverflow com a 20559175     public static boolean isMediaDocument Uri uri        return  com android providers media documents  equals uri getAuthority           Lastly  the HTML page needs to trigger that new method of showPicker  specificaly when on A4 4    lt form id  form-upload  method  post  enctype  multipart form-data  gt       lt input id  fileupload  name  fileupload  type  file  onclick  javascript prepareForPicker      gt   lt  form gt   lt script type  text javascript  gt  function getAndroidVersion         var ua   navigator userAgent       var match   ua match  Android s  0-9             return match   match 1    false     function prepareForPicker        if getAndroidVersion   indexOf  4 4      -1           window jsi showPicker            return false           function CheckImage name      Check to see if user wants to save I used some ajax to save the file if necesarry    lt  script gt

User · Answer

2019  This code worked for me  Tested on Androids 5 - 9    package com example filechooser   import android app Activity  import android content Intent  import android net Uri  import android net http SslError  import android os Bundle  import android webkit SslErrorHandler  import android webkit ValueCallback  import android webkit WebChromeClient  import android webkit WebView  import android webkit WebViewClient    public class MainActivity extends Activity           variables para manejar la subida de archivos     private final static int FILECHOOSER RESULTCODE   1      private ValueCallback lt Uri   gt  mUploadMessage          variable para manejar el navegador empotrado     WebView mainWebView         Override     protected void onCreate Bundle savedInstanceState             super onCreate savedInstanceState            setContentView R layout activity main               instanciamos el webview         mainWebView   findViewById R id main web view               establecemos el cliente interno para que la navegacion no se salga de la aplicacion         mainWebView setWebViewClient new MyWebViewClient                 establecemos el cliente chrome para seleccionar archivos         mainWebView setWebChromeClient new MyWebChromeClient                 configuracion del webview         mainWebView getSettings   setJavaScriptEnabled true               cargamos la pagina         mainWebView loadUrl  https   example com                 Override     protected void onActivityResult int requestCode  int resultCode  Intent intent                manejo de seleccion de archivo         if  requestCode    FILECHOOSER RESULTCODE                 if  null    mUploadMessage    intent    null    resultCode    RESULT OK                    return                             Uri   result   null              String dataString   intent getDataString                 if  dataString    null                    result   new Uri    Uri parse dataString                                mUploadMessage onReceiveValue result               mUploadMessage   null                                                       Web clients classes                                             Clase para configurar el webview             private class MyWebViewClient extends WebViewClient               permite la navegacion dentro del webview          Override         public boolean shouldOverrideUrlLoading WebView view  String url                view loadUrl url               return true                                   Clase para configurar el chrome client para que nos permita seleccionar archivos             private class MyWebChromeClient extends WebChromeClient               maneja la accion de seleccionar archivos          Override         public boolean onShowFileChooser WebView webView  ValueCallback lt Uri   gt  filePathCallback  FileChooserParams fileChooserParams                    asegurar que no existan callbacks             if  mUploadMessage    null                    mUploadMessage onReceiveValue null                              mUploadMessage   filePathCallback               Intent i   new Intent Intent ACTION GET CONTENT               i addCategory Intent CATEGORY OPENABLE               i setType            set MIME type to filter              MainActivity this startActivityForResult Intent createChooser i   File Chooser    MainActivity FILECHOOSER RESULTCODE                 return true                       Hope can help you

User · Answer

have you visited this links  http   groups google com group android-developers browse thread thread dcaf8b2fdd8a90c4 62d5e2ffef31ebdb  http   moazzam-khan com blog  tag android-upload-file  http   evgenyg wordpress com 2010 05 01 uploading-files-multipart-post-apache   Concise example of file upload via Java lib Apache Commons  i think you will get help from this

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This is a full solution for all android versions  I had a hard time with this too   public class MyWb extends Activity       Called when the activity is first created      WebView web  ProgressBar progressBar   private ValueCallback lt Uri gt  mUploadMessage     private final static int FILECHOOSER RESULTCODE 1       Override    protected void onActivityResult int requestCode  int resultCode                                        Intent intent        if requestCode  FILECHOOSER RESULTCODE             if  null    mUploadMessage  return                Uri result   intent    null    resultCode    RESULT OK   null                         intent getData                  mUploadMessage onReceiveValue result                 mUploadMessage   null                Override public void onCreate Bundle savedInstanceState        super onCreate savedInstanceState       setContentView R layout main        web    WebView  findViewById R id webview01       progressBar    ProgressBar  findViewById R id progressBar1        web   new WebView this         web getSettings   setJavaScriptEnabled true       web loadUrl  http   www script-tutorials com demos 199 index html        web setWebViewClient new myWebClient         web setWebChromeClient new WebChromeClient                          The undocumented magic method override                Eclipse will swear at you if you try to put  Override here              For Android 3 0          public void openFileChooser ValueCallback lt Uri gt  uploadMsg                   mUploadMessage   uploadMsg                Intent i   new Intent Intent ACTION GET CONTENT                 i addCategory Intent CATEGORY OPENABLE                 i setType  image                    MyWb this startActivityForResult Intent createChooser i  File Chooser    FILECHOOSER RESULTCODE                               For Android 3 0             public void openFileChooser  ValueCallback uploadMsg  String acceptType                mUploadMessage   uploadMsg             Intent i   new Intent Intent ACTION GET CONTENT              i addCategory Intent CATEGORY OPENABLE              i setType                    MyWb this startActivityForResult             Intent createChooser i   File Browser               FILECHOOSER RESULTCODE                           For Android 4 1            public void openFileChooser ValueCallback lt Uri gt  uploadMsg  String acceptType  String capture                  mUploadMessage   uploadMsg                   Intent i   new Intent Intent ACTION GET CONTENT                    i addCategory Intent CATEGORY OPENABLE                    i setType  image                       MyWb this startActivityForResult  Intent createChooser  i   File Chooser     MyWb FILECHOOSER RESULTCODE                                   setContentView web          public class myWebClient extends WebViewClient        Override     public void onPageStarted WebView view  String url  Bitmap favicon               TODO Auto-generated method stub         super onPageStarted view  url  favicon               Override     public boolean shouldOverrideUrlLoading WebView view  String url               TODO Auto-generated method stub          view loadUrl url           return true               Override     public void onPageFinished WebView view  String url               TODO Auto-generated method stub         super onPageFinished view  url            progressBar setVisibility View GONE              flipscreen not loading again  Override public void onConfigurationChanged Configuration newConfig               super onConfigurationChanged newConfig         To handle  Back  key press event for WebView to go back to previous screen     Override public boolean onKeyDown int keyCode  KeyEvent event         if   keyCode    KeyEvent KEYCODE BACK   amp  amp  web canGoBack              web goBack            return true            return super onKeyDown keyCode  event           Also I want to add that the  upload page  like the one in this example  wont work on  lt  4 versions  since it has an image preview feature  if you want to make it work use a simple php upload without preview   Update   Please find the solution for lollipop devices here and thanks for gauntface   Update 2   Complete solution for all android devices till oreo here and this is more advanced version  you should look into it  maybe it can help

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I researched on this issue for almost one month  Everything failed  All codes seen in multiple websites does n t work good  But here exists the best solution  https   github com chiclaim android-webview-upload-file  Steps  1  Click on clone or download   2  Get the zip fle in your local directory  3  unzip the zip file  4  Open Android studio  5  Goto File ----  Open ---  Navigate to directory where you unzipped the contents   6  Change the required web url in webView loadUrl  your url hre    in MainActivity java  7  Works good  with version Android studio 3 4 2

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This solution also works for Honeycomb and Ice Cream Sandwich  Seems like Google introduced a cool new feature  accept attribute  and forgot to to implement an overload for backwards compatibility   protected class CustomWebChromeClient extends WebChromeClient          For Android 3 0      public void openFileChooser  ValueCallback lt Uri gt  uploadMsg  String acceptType                    context mUploadMessage   uploadMsg            Intent i   new Intent Intent ACTION GET CONTENT             i addCategory Intent CATEGORY OPENABLE             i setType  image                context startActivityForResult  Intent createChooser  i   File Chooser     MainActivity FILECHOOSER RESULTCODE                    For Android  lt  3 0     public void openFileChooser  ValueCallback lt Uri gt  uploadMsg                  openFileChooser  uploadMsg

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I m new to Andriod and struggled with this also  According to Google Reference Guide WebView      By default  a WebView provides no browser-like widgets  does not   enable JavaScript and web page errors are ignored  If your goal is   only to display some HTML as a part of your UI  this is probably fine    the user won t need to interact with the web page beyond reading it    and the web page won t need to interact with the user  If you actually   want a full-blown web browser  then you probably want to invoke the   Browser application with a URL Intent rather than show it with a   WebView    Example code I executed in MainActvity java    Uri uri   Uri parse  https   www example com     Intent intent   new Intent Intent ACTION VIEW  uri    startActivity intent     Excuted  package example com myapp   import android support v7 app AppCompatActivity  import android os Bundle  import android webkit WebView  import android webkit WebViewClient  import android content Intent  import android net Uri   public class MainActivity extends AppCompatActivity         Override     protected void onCreate Bundle savedInstanceState            super onCreate savedInstanceState           setContentView R layout activity main            Uri uri   Uri parse  http   www example com             Intent intent   new Intent Intent ACTION VIEW  uri           startActivity intent           getSupportActionBar   hide

User · Answer

In 5 0 Lollipop  Google added an official method  WebChromeClient onShowFileChooser  They even provide a way to automatically generate the file chooser intent so that it uses the input accept mime types   public class MyWebChromeClient extends WebChromeClient              reference to activity instance  May be unnecessary if your web chrome client is member class      private MyActivity activity       public boolean onShowFileChooser WebView webView  ValueCallback lt Uri   gt  filePathCallback  FileChooserParams fileChooserParams               make sure there is no existing message         if  myActivity uploadMessage    null                myActivity uploadMessage onReceiveValue null               myActivity uploadMessage   null                     myActivity uploadMessage   filePathCallback           Intent intent   fileChooserParams createIntent            try               myActivity startActivityForResult intent  MyActivity REQUEST SELECT FILE             catch  ActivityNotFoundException e                myActivity uploadMessage   null              Toast makeText myActivity   Cannot open file chooser   Toast LENGTH LONG  show                return false                     return true            public class MyActivity extends           public static final int REQUEST SELECT FILE   100      public ValueCallback lt Uri   gt  uploadMessage       protected void onActivityResult int requestCode  int resultCode  Intent data           if  requestCode    REQUEST SELECT FILE                    if  uploadMessage    null  return                  uploadMessage onReceiveValue WebChromeClient FileChooserParams parseResult resultCode  data                    uploadMessage   null                                    For Android versions before KitKat  the private methods mentioned in the other answers work  I have not found a good workaround for KitKat  4 4

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Webview - Single  amp  Multiple files choose  you needs two minutes to implement this code   build gradle  implementation  com github angads25 filepicker 1 1 1    java code   import android annotation SuppressLint  import android app Activity  import android content DialogInterface  import android content Intent  import android content pm PackageManager  import android graphics Bitmap  import android net Uri  import android os Build  import android os Bundle  import android support annotation NonNull  import android util Log  import android view KeyEvent  import android view View  import android webkit ValueCallback  import android webkit WebChromeClient  import android webkit WebSettings  import android webkit WebView  import android webkit WebViewClient  import android widget ProgressBar  import android widget Toast   import com bivoiclient utils Constants  import com github angads25 filepicker controller DialogSelectionListener  import com github angads25 filepicker model DialogConfigs  import com github angads25 filepicker model DialogProperties  import com github angads25 filepicker view FilePickerDialog   import java io File   public class WebBrowserScreen extends Activity        private WebView webView      private ValueCallback lt Uri   gt  mUploadMessage      private FilePickerDialog dialog      private String LOG TAG    DREG       private Uri   results        SuppressLint  SetJavaScriptEnabled        Override     protected void onCreate Bundle savedInstanceState            super onCreate savedInstanceState           setContentView R layout activity complain            webView   findViewById R id webview           WebSettings webSettings   webView getSettings            webSettings setAppCacheEnabled true           webSettings setCacheMode WebSettings LOAD CACHE ELSE NETWORK           webSettings setJavaScriptEnabled true           webSettings setLoadWithOverviewMode true           webSettings setAllowFileAccess true           webView setWebViewClient new PQClient             webView setWebChromeClient new PQChromeClient             if  Build VERSION SDK INT  gt   19                webView setLayerType View LAYER TYPE HARDWARE  null             else               webView setLayerType View LAYER TYPE SOFTWARE  null                      webView loadUrl Constants COMPLAIN URL               private void openFileSelectionDialog              if  null    dialog  amp  amp  dialog isShowing                  dialog dismiss                         Create a DialogProperties object          final DialogProperties properties   new DialogProperties               Instantiate FilePickerDialog with Context and DialogProperties          dialog   new FilePickerDialog WebBrowserScreen this  properties           dialog setTitle  Select a File            dialog setPositiveBtnName  Select            dialog setNegativeBtnName  Cancel            properties selection mode   DialogConfigs MULTI MODE     for multiple files           properties selection mode   DialogConfigs SINGLE MODE     for single file         properties selection type   DialogConfigs FILE SELECT             Method handle selected files          dialog setDialogSelectionListener new DialogSelectionListener                  Override             public void onSelectedFilePaths String   files                    results   new Uri files length                   for  int i   0  i  lt  files length  i                          String filePath   new File files i   getAbsolutePath                        if   filePath startsWith  file                                 filePath    file       filePath                                            results i    Uri parse filePath                       Log d LOG TAG   file path      filePath                       Log d LOG TAG   file uri      String valueOf results i                                       mUploadMessage onReceiveValue results                   mUploadMessage   null                                    dialog setOnCancelListener new DialogInterface OnCancelListener                  Override             public void onCancel DialogInterface dialogInterface                    if  null    mUploadMessage                        if  null    results  amp  amp  results length  gt   1                            mUploadMessage onReceiveValue results                         else                           mUploadMessage onReceiveValue null                                                           mUploadMessage   null                                    dialog setOnDismissListener new DialogInterface OnDismissListener                  Override             public void onDismiss DialogInterface dialogInterface                    if  null    mUploadMessage                        if  null    results  amp  amp  results length  gt   1                            mUploadMessage onReceiveValue results                         else                           mUploadMessage onReceiveValue null                                                           mUploadMessage   null                                     dialog show                public class PQChromeClient extends WebChromeClient             Override         public boolean onShowFileChooser WebView webView  ValueCallback lt Uri   gt  filePathCallback  FileChooserParams fileChooserParams                   Double check that we don t have any existing callbacks             if  mUploadMessage    null                    mUploadMessage onReceiveValue null                             mUploadMessage   filePathCallback               openFileSelectionDialog                 return true                          Add this method to show Dialog when the required permission has been granted to the app       Override     public void onRequestPermissionsResult int requestCode   NonNull String permissions     NonNull int   grantResults            switch  requestCode                case FilePickerDialog EXTERNAL READ PERMISSION GRANT                    if  grantResults length  gt  0  amp  amp  grantResults 0     PackageManager PERMISSION GRANTED                        if  dialog    null                            openFileSelectionDialog                                            else                         Permission has not been granted  Notify the user                      Toast makeText WebBrowserScreen this   Permission is Required for getting list of files   Toast LENGTH SHORT  show                                                         public boolean onKeyDown int keyCode  KeyEvent event               Check if the key event was the Back button and if there s history         if   keyCode    KeyEvent KEYCODE BACK   amp  amp  webView canGoBack                  webView goBack                return true                       If it wasn t the Back key or there s no web page history  bubble up to the default            system behavior  probably exit the activity           return super onKeyDown keyCode  event               public class PQClient extends WebViewClient           ProgressBar progressDialog           public boolean shouldOverrideUrlLoading WebView view  String url                    If url contains mailto link then open Mail Intent             if  url contains  mailto                           Could be cleverer and use a regex                   Open links in new browser                 view getContext   startActivity                          new Intent Intent ACTION VIEW  Uri parse url                         Here we can open new activity                  return true                 else                      Stay within this webview and load url                 view loadUrl url                   return true                                      Show loader on url load         public void onPageStarted WebView view  String url  Bitmap favicon                   Then show progress  Dialog                in standard case YourActivity this             if  progressDialog    null                    progressDialog   findViewById R id progressBar                   progressDialog setVisibility View VISIBLE                                       Called when all page resources loaded         public void onPageFinished WebView view  String url                webView loadUrl  javascript  function                             document getElementById  android-app   style display  none                       try                      Close progressDialog                 progressDialog setVisibility View GONE                 catch  Exception exception                    exception printStackTrace

User · Answer

I found that I needed 3 interface definitions in order to handle various version of android   public void openFileChooser ValueCallback  lt  Uri  gt  uploadMsg      mUploadMessage   uploadMsg    Intent i   new Intent Intent ACTION GET CONTENT     i addCategory Intent CATEGORY OPENABLE     i setType  image        FreeHealthTrack this startActivityForResult Intent createChooser i   Image Chooser    FILECHOOSER RESULTCODE      public void openFileChooser ValueCallback  lt  Uri  gt  uploadMsg  String acceptType      openFileChooser uploadMsg      public void openFileChooser ValueCallback  lt  Uri  gt  uploadMsg  String acceptType  String capture      openFileChooser uploadMsg

User · Answer

this is the only solution that i found that works     WebView webview   private ValueCallback lt Uri gt  mUploadMessage  private final static int FILECHOOSER RESULTCODE   1    Override protected void onActivityResult int requestCode  int resultCode          Intent intent        if  requestCode    FILECHOOSER RESULTCODE            if  null    mUploadMessage              return          Uri result   intent    null    resultCode    RESULT OK   null                   intent getData            mUploadMessage onReceiveValue result           mUploadMessage   null               Next part   class MyWebChromeClient extends WebChromeClient          The undocumented magic method override        Eclipse will swear at you if you try to put  Override here     public void openFileChooser ValueCallback lt Uri gt  uploadMsg             mUploadMessage   uploadMsg          Intent i   new Intent Intent ACTION GET CONTENT           i addCategory Intent CATEGORY OPENABLE           i setType  image              Cv5appActivity this startActivityForResult                  Intent createChooser i   Image Browser                    FILECHOOSER RESULTCODE

[android] File Upload in WebView

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