Java tutorial
//package com.java2s; import android.graphics.Bitmap; import android.graphics.Matrix; public class Main { public static Bitmap rotateImageView(int angle, Bitmap bitmap) { if (bitmap == null) { return null; } Matrix matrix = new Matrix(); matrix.postRotate(angle); Bitmap resizedBitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true); return resizedBitmap; } }