Java tutorial
//package com.java2s; import android.graphics.Bitmap; import android.graphics.Matrix; public class Main { public static Bitmap getRotateBitmap(Bitmap b, float rotateDegree) { Matrix matrix = new Matrix(); matrix.postRotate((float) rotateDegree); Bitmap rotaBitmap = Bitmap.createBitmap(b, 0, 0, b.getWidth(), b.getHeight(), matrix, false); //add if (b != null && !b.isRecycled()) { b.recycle(); b = null; } return rotaBitmap; } }