public SampleView (Context context) : base (context)
{
Focusable = true;
Stream input = context.Resources.OpenRawResource (Resource.Drawable.app_sample_code);
mBitmap = BitmapFactory.DecodeStream (input);
mBitmap2 = mBitmap.ExtractAlpha ();
mBitmap3 = Bitmap.CreateBitmap (200, 200, Bitmap.Config.Alpha8);
DrawIntoBitmap (mBitmap3);
mShader = new LinearGradient (0, 0, 100, 70, new int[] {
Color.Red, Color.Green, Color.Blue },
null, Shader.TileMode.Mirror);
}