Java tutorial
//package com.java2s; import android.graphics.Bitmap; import android.graphics.Matrix; public class Main { public static Bitmap rotateBitmap(Bitmap bitmap, int rotation) { Matrix matrix = new Matrix(); matrix.preRotate(rotation); Bitmap rotatedBitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true); return rotatedBitmap; } }