I want to get Bitmap from ImageView . I have used following code, but getDrawable() returns null. How to get whole Bitmap from ImageView .

Bitmap bitmap;
if (mImageViewer.getDrawable() instanceof BitmapDrawable) {
    bitmap = ((BitmapDrawable) mImageViewer.getDrawable()).getBitmap();
} else {
    Drawable d = mImageViewer.getDrawable();
    bitmap = Bitmap.createBitmap(d.getIntrinsicWidth(), d.getIntrinsicHeight(), Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(bitmap);
    d.draw(canvas);
storeImage(bitmap,"final.jpeg");
                Your code should work, make sure your image view has a drawable, if you're setting the image using setBackground use setBitmap instead
                    – elmorabea
                Nov 26 '14 at 11:42
imageView.invalidate();
BitmapDrawable drawable = (BitmapDrawable) imageView.getDrawable();
Bitmap bitmap = drawable.getBitmap();
                Could you explain why you invalidate first? Is there a good reason to do this?
                    – Wolfgang Schreurs
                Sep 20 '18 at 12:54
Try having the image in all drawable qualities folders (drawable-hdpi/drawable-ldpi etc.)
Could be that the emulator or device your using has a different density and is trying to pull images from another folder.
If you are using an extension in your image other than .png, .jpg, or .gif, It might not recognize other extension types. http://developer.android.com/guide/topics/resources/drawable-resource.html
                this doesn't work perfectly all the time, usually give Canvas: trying to use recycled bitmap
                    – Arsalan Saleem
                Feb 21 '15 at 8:08
                This solution along with this answer(stackoverflow.com/questions/5566758/…) worked for me:  imageView.measure(MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED),              MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED)); imageView.layout(0, 0, imageView.getMeasuredWidth(), imageView.getMeasuredHeight());
                    – Roy
                Jun 1 '15 at 12:58
If you are trying to get bitmap from Glide loaded image then this will help you
 Drawable dr = ((ImageView) imView).getDrawable();
        Bitmap bmp =  ((GlideBitmapDrawable)dr.getCurrent()).getBitmap();
Take a picture of the ImagView and convert it to a string to send to the server
    ImageView   ivImage1 = (ImageView ) findViewById(R.id.img_add1_send );
                    getStringImage( ( ( BitmapDrawable ) ivImage1.getDrawable( ) ).getBitmap( ) ),
public String getStringImage(Bitmap bm){
    ByteArrayOutputStream ba=new ByteArrayOutputStream(  );
    bm.compress( Bitmap.CompressFormat.PNG,90,ba );
    byte[] by=ba.toByteArray();
    String encod= Base64.encodeToString( by,Base64.DEFAULT );
    return encod;
        
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