Java tutorial
//package com.java2s; import android.graphics.*; 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); if (bitmap != null && !bitmap.isRecycled()) { bitmap = null; } // bitmap.recycle(); return resizedBitmap; } }