ICSのHWAccelerationで死なない角丸効果

RoundedFrameLayout.java

public class RoundedFrameLayout extends FrameLayout {
	private Path path;
	private static final int HONEY_COMB = 11;
	private static final int LAYER_TYPE_SOFTWARE = 1;
	public RoundedFrameLayout(Context context) {
		super(context);
		useSoftwareLayer();
	}
	public RoundedFrameLayout(Context context, AttributeSet attrs) {
		super(context, attrs);
		userSoftwareLayer();
	}
	private void useSoftwareLayer() {
		// http://stackoverflow.com/questions/7401319/use-hardwareacceleration-flag-with-canvas-clippath
		if (android.os.Build.VERSION.SDK_INT >= HONEY_COMB) {
			try {
				Method method = getClass().getMethod("setLayerType", int.class, Paint.class);
				method.invoke(this, LAYER_TYPE_SOFTWARE, null);
			} catch (NoSuchMethodException e) {
				e.printStackTrace();
			} catch (IllegalAccessException e) {
				e.printStackTrace();
			} catch (InvocationTargetException e) {
				e.printStackTrace();
			}
		}
	}
	@Override
	protected void dispatchDraw(Canvas canvas){
		if (path == null) {
			path = new Path();
			path.addRoundRect(
				new RectF(0, 0, getWidth(), getHeight()),
				10, 10, Direction.CW);
		}
		canvas.clipPath(path);
		super.dispatchDraw(canvas);
	}
}