Android 获取view的 bitmap

public static Bitmap getBitmapFromView(View view) {
		if (view != null) {
			Bitmap bmpScreenshot = Bitmap.createBitmap(view.getWidth(), view.getHeight(),
					Bitmap.Config.ARGB_8888);
			Canvas canvas = new Canvas(bmpScreenshot);
			view.draw(canvas);
			return bmpScreenshot;
		}else {
			return null;
		}
	
	}