如何在xml android中绘制四分之一圆

public class CircleView extends View {
    private Paint paint;

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

    public CircleView(Context context, AttributeSet attrs) {
        super(context, attrs);
        init();
    }

    public CircleView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init();
    }

    private void init() {
        paint = new Paint();
        paint.setColor(Color.RED);
        paint.setStyle(Paint.Style.FILL);
    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);

        int width = getWidth();
        int height = getHeight();

        Path path = new Path();
        path.moveTo(width / 2, height / 2);
        path.arcTo(new RectF(0, 0, width, height), 0, 90, true);
        path.lineTo(width / 2, height / 2);
        path.close();

        canvas.drawPath(path, paint);
    }
}

<com.example.CircleView
    android:layout_width="200dp"
    android:layout_height="200dp" />