Android - ImageView: setImageBitmap VS setImageDrawable

Question

What is the difference between setImageBitmap and setImageDrawable?

I have an image which I would like to set dynamically from file. The tutorial that I followed says to convert my Bitmap to a BitmapDrawable then set it using setImageDrawable. I've notice that setting the Bitmap directly with setImageBitmap also works but I don't notice any difference.

Bitmap image = BitmapFactory.decodeFile(imgFile.getAbsolutePath()); BitmapDrawable bitmapDrawable = new BitmapDrawable(image); imageView.setImageDrawable(bitmapDrawable); 

OR

Bitmap image = BitmapFactory.decodeFile(imgFile.getAbsolutePath()); imageView.setImageBitmap(image); 

Answer 1

There is no difference between the two internally setImageBitmap is calling setImageDrawable.

Below code is picked from ImageView.java of AOSP

public void setImageBitmap(Bitmap bm) {     // if this is used frequently, may handle bitmaps explicitly     // to reduce the intermediate drawable object     setImageDrawable(new BitmapDrawable(mContext.getResources(), bm)); }