自定义视图的Ondraw无限循环android

我的自定义视图的 OnDraw 函数被无限调用并且正在循环！可能的原因是什么？？

这是我的自定义视图：-

public class Balls extends View{

    private static final String TAG = "BallsView";

    private int mMode = READY;
    public static final int PAUSE = 0;
    public static final int READY = 1;
    public static final int RUNNING = 2;
    public static final int LOSE = 3;

    private final Paint mPaint = new Paint();
    private double mUx = 0.1;
    private double  mUy = 2;
    private double mVy;
    private double mVx;
    private double mSx;
    private double mSy;
    private double mRange;
    private float mX1;
    private float mY1;
    private int mX2;
    private int mY2;
    private int mDx;
    private int mDy;
    Time t;
    float mAngle;
    private final double mGravity = -9.8;

    private long mLastTime;

    private double mT;

    private Canvas mCanvas = null;



    public Balls(Context context, AttributeSet attrs, int defStyle){
        super(context, attrs, defStyle);
        setFocusable(true);
        setWillNotDraw(false);
        mPaint.setStyle(Paint.Style.FILL_AND_STROKE); 
        mPaint.setStrokeWidth(10); 
        mPaint.setAntiAlias(true); 
        mPaint.setStrokeCap(Cap.ROUND); 
        //mPaint.setColor(0xff00ffff);
        mPaint.setARGB(255, 0, 255, 0);

        mLastTime = System.currentTimeMillis();


    }
    public Balls(Context context, AttributeSet attrs) {
        super(context, attrs);
         setFocusable(true);
         setWillNotDraw(false);
          mPaint.setStyle(Paint.Style.FILL_AND_STROKE); 
          mPaint.setStrokeWidth(10); 
          mPaint.setAntiAlias(true); 
          mPaint.setStrokeCap(Cap.ROUND); 
          mPaint.setColor(0xff00ffff);

    }

     @Override
    public void onDraw(Canvas canvas) {
         Log.w(this.getClass().getName(),"onDraw of Balls called");
      super.onDraw(canvas);
      mCanvas = canvas;

      if(mCanvas!= null)
          Log.w(this.getClass().getName(),"Canvas is not null");

    }

这个观点在另一项活动中被夸大如下：-

mBalls = (Balls) findViewById(R.id.balls);

该视图放置在相对视图内的 xml 文件中，并且相对视图是水平滚动视图的子视图。

onDraw(Canvas)像无限循环一样被频繁调用是不正常的。 一般情况下应该调用1到3次，如果没有后续的话invalidate或布局更改。 无限循环的原因可能是：
1、你打来电话invalidate or postInvalidate一些地方。
2、父级或同级布局一直在变化。
3、使用View.LAYER_TYPE_SOFTWARE，es。 setLayerType（View.LAYER_TYPE_SOFTWARE，空）。
值得注意的是 LAYER_TYPE_SOFTWARE 会导致onDraw()被调用，就像在循环中一样。