我AVE创建的路径了一圈，并在屏幕上显示他们两个如下：

I ave created a path a circle and displayed both of them on screen as follows:

public void onDraw(Canvas canvas){

        Path sPath = new Path();
        sPath.moveTo(100, 100);
        sPath.lineTo(300, 100);
        sPath.lineTo(300, 300);
        sPath.lineTo(100,300);
        sPath.lineTo(100,100);
        sPath.close();

        Paint ballPaint = new Paint();
        ballPaint.setColor(Color.GREEN);
        Paint pathPaint = new Paint();
        pathPaint.setColor(Color.BLUE);

        canvas.drawPath(sPath, ballPaint);
        canvas.drawCircle(100,100,20,pathPaint);
    }

我想有圆移动沿着小路，我怎么能做到这一点？

i would like to have the circle move along the path, how can i do this?

推荐答案

您需要将您的圈子有点每一帧朝着下一个航点，并检测，一旦到达那里，然后开始走向下一个。没有内置在系统中，我知道了。

You would need to move your circle a little bit each frame towards the next waypoint and detect once it gets there, then start moving toward the next. There is no built in system that I know of.