How to programmatically set drawableLeft on Android button?

Simply you can try this also

txtVw.setCompoundDrawablesWithIntrinsicBounds(R.drawable.smiley, 0, 0, 0);

You can use the setCompoundDrawables method to do this. See the example here. I used this without using the setBounds and it worked. You can try either way.

UPDATE: Copying the code here incase the link goes down

Drawable img = getContext().getResources().getDrawable(R.drawable.smiley);
img.setBounds(0, 0, 60, 60);
txtVw.setCompoundDrawables(img, null, null, null);

or

Drawable img = getContext().getResources().getDrawable(R.drawable.smiley);
txtVw.setCompoundDrawablesWithIntrinsicBounds(img, null, null, null);

or

txtVw.setCompoundDrawablesWithIntrinsicBounds(R.drawable.smiley, 0, 0, 0);