Get Bitmap attached to ImageView

Question

Given

ImageView image = R.findViewById(R.id.imageView);
image.setImageBitmap(someBitmap);

Is it possible to retrieve the bitmap?

yes it, possible when u click on image we will get that if you want this requirement let me know. — RajaReddy PolamReddy, Nov 29 '11 at 06:12

score 826 · Accepted Answer · answered Nov 29 '11 at 06:15

826

Bitmap bitmap = ((BitmapDrawable)image.getDrawable()).getBitmap();

answered Nov 29 '11 at 06:15

Arslan Anwar

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Be carefull to check if your `image.getDrawable()` can actually be cast to `BitmapDrawable` (to avoid `IllegalCastExceptions`). If, for instance, you use layers in your image then this snippet will be slightly different: `Bitmap bitmap = ((BitmapDrawable)((LayerDrawable)image.getDrawable()).getDrawable(0)).getBitmap();` – Alex Semeniuk Mar 18 '13 at 12:38
2

This will, occasionally, return a bitmap with some or all black pixels. – Sep 14 '13 at 13:52
2

this will not return the original bitmap nor the filtered bitmap if you have applied on the drawable/imageview. – DearDhruv Nov 08 '13 at 05:51
Returns null for me. Not sure why. My `ImageView` does not have a drawable in it though, but a photo bitmap. – Azurespot Apr 02 '15 at 05:18
@NoniA. - you should open a new question about it – A-S Feb 20 '16 at 20:12
4

does this work if image in `ImageView` is set from `URI`? `imageView.setImageUri()` – Hendra Anggrian Jun 23 '16 at 09:04
1

@praneethkumar it does work in my scenario. Thumbs up for this awesome answer! – Hendra Anggrian Jul 04 '16 at 12:05

score 46 · Answer 2 · edited Jan 24 '17 at 20:37

46

This will get you a Bitmap from the ImageView. Though, it is not the same bitmap object that you've set. It is a new one.

imageView.buildDrawingCache();
Bitmap bitmap = imageView.getDrawingCache();

=== EDIT ===

 imageView.setDrawingCacheEnabled(true);
 imageView.measure(MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED), 
                   MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
 imageView.layout(0, 0, 
                  imageView.getMeasuredWidth(), imageView.getMeasuredHeight()); 
 imageView.buildDrawingCache(true);
 Bitmap bitmap = Bitmap.createBitmap(imageView.getDrawingCache());
 imageView.setDrawingCacheEnabled(false);

edited Jan 24 '17 at 20:37

winklerrr

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answered Nov 29 '11 at 06:12

Sarwar Erfan

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when it "does not work", what happens? Does it return null or throw exception or what? – Sarwar Erfan Nov 29 '11 at 08:00
2

it returns null. sometimes I have to reload the page for it to actually appear. – lemon Dec 04 '11 at 10:08
3

Gives me a null pointer. :( On this line: `Bitmap bmap = Bitmap.createBitmap(mImageView.getDrawingCache());` – Azurespot Apr 02 '15 at 05:29
drawingCache is deprecated in Kotlin – Jeff Bootsholz Oct 05 '18 at 13:38

score 3 · Answer 3 · answered Feb 03 '18 at 07:29

3

Write below code

ImageView yourImageView = (ImageView) findViewById(R.id.yourImageView);
Bitmap bitmap = ((BitmapDrawable)yourImageView.getDrawable()).getBitmap();

answered Feb 03 '18 at 07:29

Pankaj Talaviya

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i get AppCompatImageView cannot be cast to android.graphics.drawable.BitmapDrawable – Billyjoker Apr 12 '20 at 15:44

score 3 · Answer 4 · answered Nov 13 '19 at 06:53

3

For those who are looking for Kotlin solution to get Bitmap from ImageView.

var bitmap = (image.drawable as BitmapDrawable).bitmap

answered Nov 13 '19 at 06:53

Asad Ali Choudhry

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i get AppCompatImageView cannot be cast to android.graphics.drawable.BitmapDrawable – Billyjoker Apr 12 '20 at 15:43

score 0 · Answer 5 · answered Aug 20 '17 at 18:41

0

This code is better.

public static  byte[] getByteArrayFromImageView(ImageView imageView)
    {
        BitmapDrawable bitmapDrawable = ((BitmapDrawable) imageView.getDrawable());
        Bitmap bitmap;
        if(bitmapDrawable==null){
            imageView.buildDrawingCache();
            bitmap = imageView.getDrawingCache();
            imageView.buildDrawingCache(false);
        }else
        {
            bitmap = bitmapDrawable .getBitmap();
        }
        ByteArrayOutputStream stream = new ByteArrayOutputStream();
        bitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream);
        return stream.toByteArray();
    }

answered Aug 20 '17 at 18:41

Ahmad Aghazadeh

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is it imageView.getDrawable(); -> means getting the image from drawable folder? CMIIW.... @Ahmad – gumuruh Jul 09 '18 at 19:27
No. You can use this code.`Bitmap imagenAndroid = BitmapFactory.decodeResource(getResources(),R.drawable.jellybean_statue);` – Ahmad Aghazadeh Jul 10 '18 at 03:56

score -4 · Answer 6 · edited Dec 19 '14 at 17:02

-4

Other way to get a bitmap of an image is doing this:

Bitmap imagenAndroid = BitmapFactory.decodeResource(getResources(),R.drawable.jellybean_statue);
imageView.setImageBitmap(imagenAndroid);

edited Dec 19 '14 at 17:02

emmanuel

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answered Dec 19 '14 at 16:45

Hermes Trismegisto

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score -10 · Answer 7 · edited Nov 19 '15 at 07:14

-10

try this code:

Bitmap bitmap;
bitmap = ((BitmapDrawable)image.getDrawable()).getBitmap();

edited Nov 19 '15 at 07:14

Abhinav singh

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answered Jun 16 '15 at 07:23

Droid_Mechanic

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Could you describe the enhancement over @Arslan 's accepted answer? – bummi Jun 16 '15 at 07:46
you'd better explain why your answer solves his problem – Muhammed Refaat Nov 19 '15 at 08:19

Get Bitmap attached to ImageView

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