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javaandroidandroid-imageviewandroid-viewimagebutton

Transfer image from one ImageButton to another

I have two ImageButtons, each with a different image within. I need to find Java code which essentially allows ImageButton2 to display ImageButton1's image. I've been flailing around, but I think the magic command should be something like this:

ImageButton2.setImageResource( ImageButton1.getImageAlpha() );

ImageButton2.setImageResource( ((BitmapDrawable) ImageButton1.getDrawable()).getBitmap() );

int id = ImageButton1.getId();
ImageButton2.setImageResource( R.drawable.(id) );

But none of these compile. The answer has to be something like this:

ImageButton2.setImageResource( ImageButton1.getImageResource() );

Anyone see the solution? I've been working on this all day. Thanks.

Solution

  • That can be achieved following way:

    
    Drawable drawable = imageButton1.getDrawable();
    Drawable mutatedDrawable = drawable.mutate();
    imageButton2.setImageDrawable(mutatedDrawable);

    By default, drawables would be shared. If you want changes made one drawable not to affect to the same drawable attached to another view, then you have to explicitly mutate() the drawable.