how can i check if an imageview background is a certain image?

问题

so far im using something like this

if (image.getDrawable() != thisContext.getResources().getDrawable(R.raw.anImage) ) {
    // do something
}

but it does not work.

回答1:

Basically, comparing two drawables is a pain so just convert them to bitmaps and then compare the bitmaps (much easier solution), here's the code:

Bitmap bitmap1 = ((BitmapDrawable)fDraw).getBitmap();
Bitmap bitmap2 = ((BitmapDrawable)sDraw).getBitmap();

if(bitmap1 == bitmap2)
{
 do some stuff
}

回答2:

try converting the Drawables to Bitmap first and then comparing:

Bitmap a = ((BitmapDrawable)d1).getBitmap();
Bitmap b = ((BitmapDrawable)d2).getBitmap();

来源：https://stackoverflow.com/questions/12207058/how-can-i-check-if-an-imageview-background-is-a-certain-image