Android - Rotate image inside the button

Question

I want to rotate the image inside the button on click of the button. I tried with just ImageView and it works but for accessibility purpose I need to use Button instead of I

Answer 1

You can set bitmap as background in button.

Matrix matrix = new Matrix();

matrix.postRotate(90);

Bitmap scaledBitmap = Bitmap.createScaledBitmap(bitmapOrg,width,height,true);

Bitmap rotatedBitmap = Bitmap.createBitmap(scaledBitmap , 0, 0, scaledBitmap .getWidth(), scaledBitmap .getHeight(), matrix, true);

First take bitmap from any source and then rotate it and then set it as background in button.

BitmapDrawable bdrawable = new BitmapDrawable(context.getResources(),bitmap);
button.setBackground(bdrawable);