Best method to download image from url in Android

Question

I m using below method to download single image from url  public static Bitmap getBitmap String url        try           InputStream is    InputStream  new URL url  getContent            Bitmap d   BitmapFactory decodeStream is           is close            return d        catch  Exception e            return null            Sometimes I get an outofmemory exception   I am unable to catch outofmemory exception  The app will close  How to prevent this    Is there a better method for downloading images that is also faster

User · Answer

Try to use this   public Bitmap getBitmapFromURL String src        try           java net URL url   new java net URL src           HttpURLConnection connection    HttpURLConnection  url                  openConnection            connection setDoInput true           connection connect            InputStream input   connection getInputStream            Bitmap myBitmap   BitmapFactory decodeStream input           return myBitmap        catch  IOException e            e printStackTrace            return null            And for OutOfMemory issue    public Bitmap getResizedBitmap Bitmap bm  int newHeight  int newWidth        int width   bm getWidth        int height   bm getHeight        float scaleWidth     float  newWidth    width      float scaleHeight     float  newHeight    height         CREATE A MATRIX FOR THE MANIPULATION     Matrix matrix   new Matrix           RESIZE THE BIT MAP     matrix postScale scaleWidth  scaleHeight            RECREATE  THE NEW BITMAP     Bitmap resizedBitmap   Bitmap createBitmap bm  0  0  width  height              matrix  false        return resizedBitmap

User · Answer

I recommend using the altex-image-downloader library  which makes it easy to download images   AltexImageDownloader writeToDisk context  Imageurl   IMAGES      Add dependency in app build gradle   implementation  com artjimlop altex-image-downloader 0 0 4

User · Answer

Try this code to download an image from a URL on Android   DownloadManager downloadManager    DownloadManager getSystemService Context DOWNLOAD SERVICE   Uri uri   Uri parse imageName   DownloadManager Request request   new DownloadManager Request uri   request setNotificationVisibility DownloadManager Request VISIBILITY VISIBLE NOTIFY COMPLETED   Long reference   downloadManager enqueue request

User · Answer

You can download image by Asyn task use this class   public class ImageDownloaderTask extends AsyncTask lt String  Void  Bitmap gt         private final WeakReference lt ImageView gt  imageViewReference      private final MemoryCache memoryCache      private final BrandItem brandCatogiriesItem      private Context context      private String url       public ImageDownloaderTask ImageView imageView  String url  Context context            imageViewReference   new WeakReference lt ImageView gt  imageView           memoryCache   new MemoryCache            brandCatogiriesItem   new BrandItem            this url   url          this context   context              Override     protected Bitmap doInBackground String    params             return downloadBitmap params 0                Override     protected void onPostExecute Bitmap bitmap            if  isCancelled                  bitmap   null                     if  imageViewReference    null                ImageView imageView   imageViewReference get                if  imageView    null                    if  bitmap    null                        memoryCache put  1   bitmap                       brandCatogiriesItem setUrl url                       brandCatogiriesItem setThumb bitmap                          BrandCatogiriesItem saveLocalBrandOrCatogiries context  brandCatogiriesItem                       imageView setImageBitmap bitmap                     else                       Drawable placeholder   imageView getContext   getResources   getDrawable R drawable placeholder                       imageView setImageDrawable placeholder                                                         private Bitmap downloadBitmap String url            HttpURLConnection urlConnection   null          try               URL uri   new URL url               urlConnection    HttpURLConnection  uri openConnection                 int statusCode   urlConnection getResponseCode                if  statusCode    HttpStatus SC OK                    return null                             InputStream inputStream   urlConnection getInputStream                if  inputStream    null                     Bitmap bitmap   BitmapFactory decodeStream inputStream                   return bitmap                          catch  Exception e                Log d  URLCONNECTIONERROR   e toString                 if  urlConnection    null                    urlConnection disconnect                              Log w  ImageDownloader    Error downloading image from     url             finally               if  urlConnection    null                    urlConnection disconnect                                     return null            And call this like   new ImageDownloaderTask thumbImage  item thumbnail  context  execute item thumbnail

User · Answer

you can use below function to download image from url   private Bitmap getImage String imageUrl  int desiredWidth  int desiredHeight                      private Bitmap image   null             int inSampleSize   0                BitmapFactory Options options   new BitmapFactory Options                 options inJustDecodeBounds   true               options inSampleSize   inSampleSize               try                               URL url   new URL imageUrl                    HttpURLConnection connection    HttpURLConnection url openConnection                     InputStream stream   connection getInputStream                     image   BitmapFactory decodeStream stream  null  options                    int imageWidth   options outWidth                   int imageHeight   options outHeight                   if imageWidth  gt  desiredWidth    imageHeight  gt  desiredHeight                                           System out println  imageWidth   imageWidth    imageHeight   imageHeight                        inSampleSize   inSampleSize   2                       getImage imageUrl                                     else                                          options inJustDecodeBounds   false                       connection    HttpURLConnection url openConnection                         stream   connection getInputStream                         image   BitmapFactory decodeStream stream  null  options                        return image                                               catch Exception e                                Log e  getImage   e toString                            return image          See complete explanation here

User · Answer

Add This Dependency For Android Networking Into Your Project   compile  com amitshekhar android android-networking 1 0 0       String url    http   ichef bbci co uk onesport cps 480 cpsprodpb 11136 production  95324996 defoe rex jpg       File file      String dirPath  fileName      Button downldImg        Override     protected void onCreate Bundle savedInstanceState            super onCreate savedInstanceState           setContentView R layout activity main               Initialization Of DownLoad Button         downldImg    Button  findViewById R id DownloadButton               Initialization Of DownLoad Button         AndroidNetworking initialize getApplicationContext                Folder Creating Into Phone Storage         dirPath   Environment getExternalStorageDirectory       Image            fileName    image jpeg              file Creating With Folder  amp  Fle Name         file   new File dirPath  fileName              Click Listener For DownLoad Button         downldImg setOnClickListener new View OnClickListener                  Override             public void onClick View view                     AndroidNetworking download url  dirPath  fileName                           build                            startDownload new DownloadListener                                  Override                             public void onDownloadComplete                                      Toast makeText MainActivity this   DownLoad Complete   Toast LENGTH SHORT  show                                                                Override                             public void onError ANError anError                                                                                                      After Run This Code   Check Your Phone Memory   You Can See There A Folder - Image   Check Inside This Folder   You see There a Image File with name of  image jpeg    Thank You

User · Answer

I use this library  it s really great when you have to deal with lots of images  It downloads them asynchronously  caches them etc    As for the OOM exceptions  using this and this class drastically reduced them for me

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First Declare Permission in Android Manifest -   lt uses-permission android name  android permission INTERNET   gt   lt uses-permission android name  android permission WRITE EXTERNAL STORAGE    gt   lt uses-permission android name  android permission READ EXTERNAL STORAGE    gt    MainActivityForDownloadImages java  public class MainActivityForDownloadImages extends AppCompatActivity           String urls    https   stimg cardekho com images carexteriorimages 930x620 Kia Kia-Seltos 6232 1562746799300 front-left-side-47 jpg       String urls    https   images5 alphacoders com 609 609173 jpg       Button button       public final Context context   this      ProgressDialog progressDialog          Override     protected void onCreate Bundle savedInstanceState            super onCreate savedInstanceState           setContentView R layout activity main for download images           if  ContextCompat checkSelfPermission context  Manifest permission WRITE EXTERNAL STORAGE     PackageManager PERMISSION GRANTED                 ActivityCompat requestPermissions this  new String   Manifest permission WRITE EXTERNAL STORAGE Manifest permission READ EXTERNAL STORAGE   0                       progressDialog   new ProgressDialog context           button   findViewById R id downloadImagebtn           button setOnClickListener new View OnClickListener                  Override             public void onClick View v                        initialize the progress dialog like in the first example                    this is how you fire the downloader                  Intent intent   new Intent context  DownloadService class                   intent putExtra  url   urls                   intent putExtra  receiver   new DownloadReceiver new Handler                      startService intent                                             Override     public void onRequestPermissionsResult int requestCode  String   permissions  int   grantResults            if  requestCode    0                if  grantResults length  gt  0  amp  amp  grantResults 0     PackageManager PERMISSION GRANTED                      amp  amp  grantResults 1     PackageManager PERMISSION GRANTED                                         private class DownloadReceiver extends ResultReceiver            public DownloadReceiver Handler handler                super handler                       Override         protected void onReceiveResult int resultCode  Bundle resultData                 super onReceiveResult resultCode  resultData                if  resultCode    DownloadService UPDATE PROGRESS                     int progress   resultData getInt  progress      get the progress                 progressDialog setProgress progress                   progressDialog setMessage  Images Is Downloading                    progressDialog show                     if  progress    100                         progressDialog dismiss                                                          DownloadService java  public class DownloadService extends IntentService    public static final int UPDATE PROGRESS   8344  String folder main    ImagesFolder     public DownloadService         super  DownloadService         Override protected void onHandleIntent Intent intent         String urlToDownload   intent getStringExtra  url        ResultReceiver receiver    ResultReceiver  intent getParcelableExtra  receiver         try              create url and connect         URL url   new URL urlToDownload           URLConnection connection   url openConnection            connection connect                this will be useful so that you can show a typical 0-100  progress bar         int fileLength   connection getContentLength                download the file         InputStream input   new BufferedInputStream connection getInputStream               File outerFolder   new File Environment getExternalStorageDirectory    folder main           File inerDire   new File outerFolder getAbsoluteFile    System currentTimeMillis       jpg              if   outerFolder exists                  outerFolder mkdirs                       inerDire createNewFile              FileOutputStream output   new FileOutputStream inerDire            byte data     new byte 1024           long total   0          int count          while   count   input read data      -1                total    count                  publishing the progress                 Bundle resultData   new Bundle                resultData putInt  progress    int   total   100   fileLength                receiver send UPDATE PROGRESS  resultData               output write data  0  count                         close streams         output flush            output close            input close           catch  IOException e            e printStackTrace                Bundle resultData   new Bundle        resultData putInt  progress   100        receiver send UPDATE PROGRESS  resultData

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public class testCrop extends AppCompatActivity       ImageView iv      String imagePath    https   style pk wp-content uploads 2015 07 omer-Shahzad-performed-umrah-600x548 jpg        Override     protected void onCreate Bundle savedInstanceState            super onCreate savedInstanceState           setContentView R layout testcrpop           iv    ImageView  findViewById R id testCrop           imageDownload image   new imageDownload testCrop this  iv           image execute imagePath              class imageDownload extends AsyncTask lt String  Integer  Bitmap gt            Context context          ImageView imageView          Bitmap bitmap          InputStream in   null          int responseCode   -1    constructor          public imageDownload Context context  ImageView imageView                this context   context              this imageView   imageView                     Override         protected void onPreExecute                          Override         protected Bitmap doInBackground String    params                 URL url   null              try                   url   new URL params 0                     HttpURLConnection httpURLConnection    HttpURLConnection  url openConnection                    httpURLConnection setDoOutput true                   httpURLConnection connect                    responseCode   httpURLConnection getResponseCode                    if  responseCode    HttpURLConnection HTTP OK                        in   httpURLConnection getInputStream                        bitmap   BitmapFactory decodeStream in                       in close                                    catch  MalformedURLException e                    e printStackTrace                  catch  IOException e                    e printStackTrace                              return bitmap                     Override         protected void onPostExecute Bitmap data                imageView setImageBitmap data                       OUTPUT

User · Answer

The OOM exception could be avoided by following the official guide to load large bitmap   Don t run your code on the UI Thread  Use AsyncTask instead and you should be fine

User · Answer

I m still learning Android  so I cannot provide a rich context or reason for my suggestion  but this is what I am using to retrive files from both https and local urls  I am using this in my onActivity result  for both taking pictures and selecting from gallery   as well in an AsyncTask to retrieve the https urls   InputStream input   new URL  your url string   openStream    Bitmap myBitmap   BitmapFactory decodeStream input

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public void DownloadImageFromPath String path               InputStream in  null              Bitmap bmp null               ImageView iv    ImageView findViewById R id img1                int responseCode   -1              try                    URL url   new URL path     http   192 xx xx xx mypath img1 jpg                  HttpURLConnection con    HttpURLConnection url openConnection                     con setDoInput true                    con connect                     responseCode   con getResponseCode                     if responseCode    HttpURLConnection HTTP OK                                            download                       in   con getInputStream                         bmp   BitmapFactory decodeStream in                        in close                         iv setImageBitmap bmp                                                 catch Exception ex                   Log e  Exception  ex toString

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Step 1  Declaring Permission in Android Manifest  First thing to do in your first Android Project is you declare required permissions in your    AndroidManifest xml    file   For Android Download Image from URL  we need permission to access the internet to download file and read and write internal storage to save image to internal storage   Add following lines of code at the top of  tag of AndroidManifest xml file    lt uses-permission android name  android permission INTERNET   gt   lt uses-permission android name  android permission WRITE EXTERNAL STORAGE    gt   lt uses-permission android name  android permission READ EXTERNAL STORAGE    gt    Step 2  Request required permission from user  Android allows every app to run in a sandbox  If an app needs to access certain resources or information outside that sandbox  it needs to request permission from user   From Android 6 0 onward  Google wants developers to request permission from user from within the app  for more details on permissions read this   Therefore for Android Download Image from URL  you   ll need to request Read Storage and Write  For this  we will use the following lines of code to first check if the required permission is already granted by the user  if not then we will request permission for storage read and write permission   We   re creating a method    Downlaod Image     you can simple call this wherever you need to download the image   void DownloadImage String ImageUrl         if  ContextCompat checkSelfPermission MainActivity this  Manifest permission READ EXTERNAL STORAGE     PackageManager PERMISSION GRANTED  amp  amp              ContextCompat checkSelfPermission MainActivity this  Manifest permission WRITE EXTERNAL STORAGE     PackageManager PERMISSION GRANTED            ActivityCompat requestPermissions MainActivity this  new String   Manifest permission READ EXTERNAL STORAGE   123           ActivityCompat requestPermissions MainActivity this  new String   Manifest permission WRITE EXTERNAL STORAGE   123           showToast  Need Permission to access storage for Downloading Image          else           showToast  Downloading Image                Asynctask to create a thread to downlaod image in the background          new DownloadsImage   execute ImageUrl             Now that we have requested and been granted the user permission  to start with android download image from url  we will create an AsyncTask  as you are not allowed to run a background process in the main thread   class DownloadsImage extends AsyncTask lt String  Void Void gt         Override     protected Void doInBackground String    strings            URL url   null          try               url   new URL strings 0              catch  MalformedURLException e                e printStackTrace                      Bitmap bm   null          try               bm      BitmapFactory decodeStream url openConnection   getInputStream               catch  IOException e                e printStackTrace                         Create Path to save Image         File path   Environment getExternalStoragePublicDirectory Environment DIRECTORY PICTURES    AndroidDvlpr      Creates app specific folder          if  path exists                  path mkdirs                       File imageFile   new File path  String valueOf System currentTimeMillis      png       Imagename png         FileOutputStream out   null          try               out   new FileOutputStream imageFile             catch  FileNotFoundException e                e printStackTrace                      try              bm compress Bitmap CompressFormat PNG  100  out      Compress Image             out flush                out close                   Tell the media scanner about the new file so that it is                immediately available to the user              MediaScannerConnection scanFile MainActivity this new String     imageFile getAbsolutePath      null new MediaScannerConnection OnScanCompletedListener                     public void onScanCompleted String path  Uri uri                           Log i  ExternalStorage    Scanned     path                                   Log i  ExternalStorage    - gt  uri     uri                                               catch Exception e                      return null              Override     protected void onPostExecute Void aVoid            super onPostExecute aVoid           showToast  Image Saved               In the above give lines of code  a URL and Bitmap is created  using BitmapFactory decodeStream  file is downloaded   The File path is created to save the image  We have created a folder named    AndroidDvlpr    in DIRECTORY PICTURES  and download is initialized   After downloading the file MediaScannerConnection  is called to read metadata from the file and add the file to the media content provider so the image is available for the user   In the above lines of code  we have also created a method  showToast   to show Toast  complete code here   void showToast String msg   Toast makeText MainActivity this msg Toast LENGTH SHORT  show        Read more here

[android] Best method to download image from url in Android

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