Get bitmap from ImageView

Question

I have a list view which contains images and images are loaded at run time using HTTPClient. Loading is working fine. Now i want to get bitmap image from imageView in that listview. But when i do it gives NULLPointerException.

I am using this code to get BitMapImage.

Bitmap bm=((BitmapDrawable)imageView.getDrawable()).getBitmap();

I don't know where is the problem.

Here is complete code

    img.setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
            Log.i("OfferListner","Favourite called");
            ImageView imageView1 = (ImageView)v.findViewById(R.id.listImage);
            Bitmap bm=((BitmapDrawable)imageView1.getDrawable()).getBitmap();
            FileOutputStream fos;
            try {
             fos = mContext.openFileOutput(imageView1.getTag().toString(), Context.MODE_PRIVATE);
             bm.compress(Bitmap.CompressFormat.PNG, 100, fos);
             fos.close();
            }
            catch (FileNotFoundException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
               } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
               }

        }
    });

Answer 1

我认为您在查找View时遇到问题。您的代码很清楚，这里没有错误