How to get bitmap from NetworkImageView?

Question

In my project I used (Volley + NetworkImageView) to download some images and texts and showing them in a list view.. till here, I don't have any problem.

Now, I want to get bitmaps form NetworkImageView and I tried many methods like the following, but non of them worked for me.

BitmapDrawable drawable = (BitmapDrawable) imageView.getDrawable();
Bitmap bitmap = drawable.getBitmap();

Another method:

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

Non of them worked..

Any Help is appreciated,,

Answer 1

You cannot get the Bitmap reference as it is never saved in the ImageView. however you can get it using :

((BitmapDrawable)this.getDrawable()).getBitmap();

beacuse when you set it with Volley u do this:

/**
 * Sets a Bitmap as the content of this ImageView.
 * 
 * @param bm The bitmap to set
 */
@android.view.RemotableViewMethod
public void setImageBitmap(Bitmap bm) {
    // Hacky fix to force setImageDrawable to do a full setImageDrawable
    // instead of doing an object reference comparison
    mDrawable = null;
    if (mRecycleableBitmapDrawable == null) {
        mRecycleableBitmapDrawable = new ImageViewBitmapDrawable(
                mContext.getResources(), bm);
    } else {
        mRecycleableBitmapDrawable.setBitmap(bm);
    }
    setImageDrawable(mRecycleableBitmapDrawable);
}

however if you set your default image or error image or any other image in any other way you may not get BitmapDrawable but NinePatchDrawable for example.

here is how to check:

Drawable dd = image.getDrawable();
    if(BitmapDrawable.class.isAssignableFrom(dd.getClass())) {
        //good one
        Bitmap bb = ((BitmapDrawable)dd).getBitmap();
    } else {
        //cannot get that one
    }