Android open pdf file

Question

I m developing an Android application and I have to open some files   This is my code using intent   public class FacturaActivity extends Activity                   public void downloadInvoice View view            File file   new File Environment getExternalStorageDirectory   getAbsolutePath         filename           Intent intent   new Intent Intent ACTION VIEW           intent setDataAndType Uri fromFile file   application pdf            intent setFlags Intent FLAG ACTIVITY NO HISTORY           startActivity intent             File is in the root directory of the SD card and I can manually open it   Problem  Application is closed when it arrives at startActivity intent   I think the problem is in AndroidManifest xml file  but I don t know how to put it correctly   AndroidManifest xml   lt uses-permission android name  android permission INTERNET    gt   lt uses-permission android name  android permission WRITE EXTERNAL STORAGE    gt    lt uses-sdk     android minSdkVersion  8      android targetSdkVersion  8    gt    lt application     android allowBackup  true      android icon   drawable ic launcher      android label   string app name      android theme   style AppTheme      android name      MyApplication   gt   lt  --cant show complete name-- gt       lt activity         android name      MainActivity          android label   string app name   gt           lt intent-filter gt               lt action android name  android intent action MAIN    gt                lt category android name  android intent category LAUNCHER    gt           lt  intent-filter gt       lt  activity gt        lt activity          android name   FacturaActivity   gt       lt  activity gt    lt  application gt      LogCat  07-03 15 49 13 094  E AndroidRuntime 1032   FATAL EXCEPTION  main 07-03 15 49 13 094  E AndroidRuntime 1032   java lang IllegalStateException  Could not execute method of the activity       07-03 15 49 13 094  E AndroidRuntime 1032   Caused by  android content ActivityNotFoundException  No Activity found to handle Intent   act android intent action VIEW dat file    mnt sdcard 201209 F2012212782 PDF typ application pdf flg 0x40000000   07-03 15 49 13 094  E AndroidRuntime 1032       at android app Instrumentation checkStartActivityResult Instrumentation java 1408  07-03 15 49 13 094  E AndroidRuntime 1032       at android app Instrumentation execStartActivity Instrumentation java 1378  07-03 15 49 13 094  E AndroidRuntime 1032       at android app Activity startActivityForResult Activity java 2817  07-03 15 49 13 094  E AndroidRuntime 1032       at android app Activity startActivity Activity java 2923    Can you help me to complete AndroidManifest  Or how can I open that pdf

User · Answer

String dir   Attendancesystem     public void displaypdf              File file   null              file   new File Environment getExternalStorageDirectory   dir    sample pdf            Toast makeText getApplicationContext    file toString     Toast LENGTH LONG  show            if file exists                  Intent target   new Intent Intent ACTION VIEW               target setDataAndType Uri fromFile file    application pdf                target setFlags Intent FLAG ACTIVITY NO HISTORY                Intent intent   Intent createChooser target   Open File                try                   startActivity intent                 catch  ActivityNotFoundException e                       Instruct the user to install a PDF reader here  or something                                 else             Toast makeText getApplicationContext     File path is incorrect     Toast LENGTH LONG  show

User · Answer

The problem is that there is no app installed to handle opening the PDF  You should use the Intent Chooser  like so   File file   new File Environment getExternalStorageDirectory   getAbsolutePath         filename   Intent target   new Intent Intent ACTION VIEW   target setDataAndType Uri fromFile file   application pdf    target setFlags Intent FLAG ACTIVITY NO HISTORY    Intent intent   Intent createChooser target   Open File    try       startActivity intent     catch  ActivityNotFoundException e           Instruct the user to install a PDF reader here  or something

User · Answer

Kotlin version below  Updated version of  paul-burke response   fun openPDFDocument context  Context  filename  String          Create PDF Intent     val pdfFile   File Environment getExternalStorageDirectory   absolutePath         filename      val pdfIntent   Intent Intent ACTION VIEW      pdfIntent setDataAndType Uri fromFile pdfFile    application pdf       pdfIntent setFlags Intent FLAG ACTIVITY NO HISTORY         Create Viewer Intent     val viewerIntent   Intent createChooser pdfIntent   Open PDF       context startActivity viewerIntent

User · Answer

As of API 24  sending a file    URI to another app will throw a FileUriExposedException  Instead  use FileProvider to send a content    URI   public File getFile Context context  String fileName        if   Environment getExternalStorageState   equals Environment MEDIA MOUNTED             return null             File storageDir   context getExternalFilesDir null       return new File storageDir  fileName      public Uri getFileUri Context context  String fileName        File file   getFile context  fileName       return FileProvider getUriForFile context  BuildConfig APPLICATION ID     provider   file       You must also define the FileProvider in your manifest    lt provider     android name  android support v4 content FileProvider      android authorities  com mydomain fileprovider      android exported  false      android grantUriPermissions  true  gt       lt meta-data         android name  android support FILE PROVIDER PATHS          android resource   xml file paths    gt   lt  provider gt    Example file paths xml    lt  xml version  1 0  encoding  utf-8   gt   lt paths xmlns android  http   schemas android com apk res android  gt       lt external-files-path name  name  path  path    gt   lt  paths gt    Replace  name  and  path  as appropriate   To give the PDF viewer access to the file  you also have to add the FLAG GRANT READ URI PERMISSION flag to the intent   private void displayPdf String fileName        Uri uri   getFileUri this  fileName        Intent intent   new Intent Intent ACTION VIEW       intent setDataAndType uri   application pdf            FLAG GRANT READ URI PERMISSION is needed on API 24  so the activity opening the file can read it     intent setFlags Intent FLAG ACTIVITY NO HISTORY   Intent FLAG GRANT READ URI PERMISSION        if  intent resolveActivity getPackageManager       null               Show an error       else           startActivity intent             See the FileProvider documentation for more details

User · Answer

The reason you don t have permissions to open file is because you didn t grant other apps to open or view the file on your intent  To grant other apps to open the downloaded file  include the flag as shown below    FLAG GRANT READ URI PERMISSION Intent browserIntent   new Intent Intent ACTION VIEW   browserIntent setDataAndType getUriFromFile localFile    quot application pdf quot    browserIntent setFlags Intent FLAG GRANT READ URI PERMISSION  Intent FLAG ACTIVITY NO HISTORY   startActivity browserIntent    And for function  getUriFromFile localFile   private Uri getUriFromFile File file       if  Build VERSION SDK INT  lt  Build VERSION CODES N            return Uri fromFile file        else           return FileProvider getUriForFile itemView getContext    itemView getContext   getApplicationContext   getPackageName      quot  provider quot   file

[android] Android open pdf file

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