How to get Bitmap from an Uri

Question

How to get a Bitmap object from an Uri  if I succeed to store it in   data data MYFOLDER myimage png or file   data data MYFOLDER myimage png  to use it in my application   Does anyone have an idea on how to accomplish this

User · Answer

Inset of getBitmap which is depricated now I use the following approach in Kotlin  PICK IMAGE REQUEST - gt      data  data  let           val bitmap   BitmapFactory decodeStream contentResolver openInputStream it           imageView setImageBitmap bitmap

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Here s the correct way of doing it   protected void onActivityResult int requestCode  int resultCode  Intent data        super onActivityResult requestCode  resultCode  data       if  resultCode    RESULT OK                Uri imageUri   data getData            Bitmap bitmap   MediaStore Images Media getBitmap this getContentResolver    imageUri             If you need to load very large images  the following code will load it in in tiles  avoiding large memory allocations    BitmapRegionDecoder decoder   BitmapRegionDecoder newInstance myStream  false     Bitmap region   decoder decodeRegion new Rect 10  10  50  50   null     See the answer here

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try       Bitmap bitmap   MediaStore Images Media getBitmap c getContentResolver     Uri parse paths      catch  Exception e           handle exception     and yes path must be in a format of like this   file    mnt sdcard filename jpg

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InputStream imageStream   null      try           imageStream   getContext   getContentResolver   openInputStream uri         catch  FileNotFoundException e            e printStackTrace              final Bitmap selectedImage   BitmapFactory decodeStream imageStream

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Here s the correct way of doing it  keeping tabs on memory usage as well   protected void onActivityResult int requestCode  int resultCode  Intent data      super onActivityResult requestCode  resultCode  data     if  resultCode    RESULT OK          Uri imageUri   data getData        Bitmap bitmap   getThumbnail imageUri          public static Bitmap getThumbnail Uri uri  throws FileNotFoundException  IOException    InputStream input   this getContentResolver   openInputStream uri      BitmapFactory Options onlyBoundsOptions   new BitmapFactory Options      onlyBoundsOptions inJustDecodeBounds   true    onlyBoundsOptions inDither true   optional   onlyBoundsOptions inPreferredConfig Bitmap Config ARGB 8888   optional   BitmapFactory decodeStream input  null  onlyBoundsOptions     input close       if   onlyBoundsOptions outWidth    -1      onlyBoundsOptions outHeight    -1         return null         int originalSize    onlyBoundsOptions outHeight  gt  onlyBoundsOptions outWidth    onlyBoundsOptions outHeight   onlyBoundsOptions outWidth     double ratio    originalSize  gt  THUMBNAIL SIZE     originalSize   THUMBNAIL SIZE    1 0     BitmapFactory Options bitmapOptions   new BitmapFactory Options      bitmapOptions inSampleSize   getPowerOfTwoForSampleRatio ratio     bitmapOptions inDither   true    optional   bitmapOptions inPreferredConfig Bitmap Config ARGB 8888      input   this getContentResolver   openInputStream uri     Bitmap bitmap   BitmapFactory decodeStream input  null  bitmapOptions     input close      return bitmap     private static int getPowerOfTwoForSampleRatio double ratio     int k   Integer highestOneBit  int Math floor ratio      if k  0  return 1    else return k      The getBitmap   call from Mark Ingram s post also calls the decodeStream    so you don t lose any functionality   References    Android  Get thumbnail of image on SD card  given Uri of original image Handling large Bitmaps

User · Answer

Use startActivityForResult metod like below          startActivityForResult new Intent Intent ACTION PICK  setType  image      PICK IMAGE     And you can get result like this    Override protected void onActivityResult int requestCode  int resultCode  Intent data        if  resultCode    RESULT OK            return            switch  requestCode            case PICK IMAGE              Uri imageUri   data getData                try                   Bitmap bitmap   MediaStore Images Media getBitmap this getContentResolver    imageUri                 catch  IOException e                    e printStackTrace                           break

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you can do this structure   protected void onActivityResult int requestCode  int resultCode  Intent imageReturnedIntent        super onActivityResult requestCode  resultCode  imageReturnedIntent       switch requestCode            case 0              if resultCode    RESULT OK                       Uri selectedImage   imageReturnedIntent getData                        Bundle extras   imageReturnedIntent getExtras                        bitmap   extras getParcelable  data                              break         by this you can easily convert a uri to bitmap  hope help u

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You can retrieve bitmap from uri like this  Bitmap bitmap   null  try       bitmap   MediaStore Images Media getBitmap this getContentResolver    imageUri     catch  IOException e        e printStackTrace

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This is the easiest solution   Bitmap bitmap   MediaStore Images Media getBitmap this getContentResolver    uri

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IMPORTANT  See answer from  Mark Ingram below and  pjv for at better solution       You could try this   public Bitmap loadBitmap String url        Bitmap bm   null      InputStream is   null      BufferedInputStream bis   null      try                URLConnection conn   new URL url  openConnection            conn connect            is   conn getInputStream            bis   new BufferedInputStream is  8192           bm   BitmapFactory decodeStream bis             catch  Exception e                 e printStackTrace              finally           if  bis    null                         try                                bis close                              catch  IOException e                                 e printStackTrace                                    if  is    null                         try                                is close                              catch  IOException e                                 e printStackTrace                                      return bm      But remember  this method should only be called from within a thread  not GUI -thread   I a AsyncTask

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Uri imgUri   data getData    Bitmap bitmap   MediaStore Images Media getBitmap this getContentResolver    imgUri

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Full method to get image uri from mobile gallery   protected void onActivityResult int requestCode  int resultCode  Intent data            super onActivityResult requestCode  resultCode  data      if  requestCode    PICK IMAGE REQUEST  amp  amp  resultCode    RESULT OK  amp  amp  data    null  amp  amp  data getData      null                    Uri filePath   data getData          try     Getting the Bitmap from Gallery            Bitmap bitmap   MediaStore Images Media getBitmap getContentResolver    filePath              rbitmap   getResizedBitmap bitmap  250    Setting the Bitmap to ImageView            serImage   getStringImage rbitmap              imageViewUserImage setImageBitmap rbitmap           catch  IOException e               e printStackTrace

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private void uriToBitmap Uri selectedFileUri        try           ParcelFileDescriptor parcelFileDescriptor                   getContentResolver   openFileDescriptor selectedFileUri   r            FileDescriptor fileDescriptor   parcelFileDescriptor getFileDescriptor            Bitmap image   BitmapFactory decodeFileDescriptor fileDescriptor            parcelFileDescriptor close          catch  IOException e            e printStackTrace

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I have try a lot of ways  this work for me perfectly   If you choose pictrue from Gallery  You need to be ware of getting Uri from intent clipdata or intent data  because one of them may be null in different version     private fun onChoosePicture data  Intent   Bitmap           data  let               var fileUri Uri    null                data clipData  let  clip- gt                    if clip itemCount gt 0                         fileUri   clip getItemAt 0  uri                                                 it data  let  uri- gt                  fileUri   uri                                return MediaStore Images Media getBitmap this contentResolver  fileUri

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It seems that MediaStore Images Media getBitmap was deprecated in API 29  The recommended way is to use ImageDecoder createSource which was added in API 28   Here s how getting the bitmap would be done   val bitmap   if  Build VERSION SDK INT  gt   Build VERSION CODES P        ImageDecoder decodeBitmap ImageDecoder createSource requireContext   contentResolver  imageUri     else       MediaStore Images Media getBitmap requireContext   contentResolver  imageUri

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KOTLIN  So  as of April 7th  2020 none of the above mentioned options worked  but here s what worked for me    If you want to store the bitmap in a val and set an imageView with it  use this   val bitmap   BitmapFactory decodeFile currentPhotoPath  also   bitmap - gt  imageView setImageBitmap bitmap    If you just want to set the bitmap to and imageView  use this   BitmapFactory decodeFile currentPhotoPath  also   bitmap - gt  imageView setImageBitmap bitmap

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private fun setImage view  ImageView  uri  Uri            val stream   contentResolver openInputStream uri          val bitmap   BitmapFactory decodeStream stream          view setImageBitmap bitmap

[android] How to get Bitmap from an Uri?

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