在activity中使用图片轮询时，handler的post方法放在onAttachedToWindow的方法中，removeCallbacks的方法放在onDetachedFromWindow的方法中

导航栏的在Fragment里面找不到onAttachedToWindow和onDetachedFromWindow方法实现不了自动轮播----------------------------------

Fragment中怎么调用onAttachedToWindow和onDetachedFromWindow，才能实现B站https://www.bilibili.com/video/BV1Qt411j7Dx

gt;=360){duration=0;}invalidate();postDelayed(this,500);}});}定义boolean值，让画布在onAttachedToWindow开始旋转，在onDetachedFromWindow

returnsuper.dispatchTouchEvent(event);}@OverrideprotectedvoidonDetachedFromWindow(){stopLoop();super.onDetachedFromWindow

super.onAttachedToWindow(); mHandler.post(mLoopTask); } @Override public void onDetachedFromWindow

super.onAttachedToWindow(); // mHandler.post(mLoopTask); // // } // // @Override // public void onDetachedFromWindow

delayMillis调节扫描的速度postDelayed(this,10)}else{removeCallbacks(this)}}})}overridefunonDetachedFromWindow(){super.onDetachedFromWindow