这将从ImageView中获得一个位图。但是，它不是您所设置的位图对象。这是一个新的。

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);

这将从ImageView中获得一个位图。但是，它不是您所设置的位图对象。这是一个新的。

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);

试试下面的代码:

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

另一种获取图像位图的方法是这样做:

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

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

对于那些正在寻找Kotlin解决方案从ImageView获得位图的人。

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