如何在Android上实现视图的卷曲或波状边框？

public class MyView extends View {
    private Paint paint;
    private Path path;
    private int waveColor;
    private int waveHeight;

    public MyView(Context context) {
        super(context);
        init();
    }

    public MyView(Context context, AttributeSet attrs) {
        super(context, attrs);
        TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.MyView);
        waveColor = typedArray.getColor(R.styleable.MyView_waveColor, Color.BLUE);
        waveHeight = typedArray.getDimensionPixelSize(R.styleable.MyView_waveHeight, 50);
        typedArray.recycle();
        init();
    }

    private void init() {
        paint = new Paint();
        paint.setColor(waveColor);
        paint.setStyle(Paint.Style.FILL);
        paint.setAntiAlias(true);

        path = new Path();
    }

    @Override
    protected void onDraw(Canvas canvas) {
        int width = getWidth();
        int height = getHeight();

        path.reset();
        path.moveTo(0, height);
        path.lineTo(0, height - waveHeight);

        for (int i = 0; i < width / waveHeight + 2; i++) {
            path.rQuadTo(waveHeight / 2, -waveHeight, waveHeight, 0);
            path.rQuadTo(waveHeight / 2, waveHeight, waveHeight, 0);
        }

        path.lineTo(width, height);
        path.lineTo(0, height);
        path.close();

        canvas.drawPath(path, paint);
    }
}

<com.example.MyView
    android:layout_width="match_parent"
    android:layout_height="200dp"
    app:waveColor="#FF0000"
    app:waveHeight="80dp" />