Android开发之将两张图片合并为一张图片的方法

private Bitmap mergeBitmap(Bitmap firstBitmap, Bitmap secondBitmap) {
  Bitmap bitmap = Bitmap.createBitmap(firstBitmap.getWidth(), firstBitmap.getHeight(),firstBitmap.getConfig());
  Canvas canvas = new Canvas(bitmap);
  canvas.drawBitmap(firstBitmap, new Matrix(), null);
  canvas.drawBitmap(secondBitmap, 0, 0, null);
  return bitmap;
}