ViewPager.setCurrentItem(0)报错

来源：互联网发布：软件面试题目编辑：程序博客网时间：2024/05/29 05:52

原本代码：

private Runnable advPlay = new Runnable() {@Overridepublic void run() {int num = advViewPager.getChildCount();if(num > 0){if(1 == num){//advViewPager.setCurrentItem(0);}else{int currentIndex = advViewPager.getCurrentItem();if((num -1) != currentIndex){    advViewPager.setCurrentItem(advViewPager.getCurrentItem() + 1); }else{    //最后一张广告     advViewPager.setCurrentItem(0); }handler.postDelayed(advPlay, ADVWAITTIME);}}}};

这样在进行图片轮播的时候，到advViewPager.setCurrentItem(0)就出现程序卡住，然后出现ANR；

后面看了下别人的代码，改成这样：

private Runnable advPlay = new Runnable() {@Overridepublic void run() {int num = advViewPager.getChildCount();if(num > 0){if(1 == num){//advViewPager.setCurrentItem(0);}else{int currentIndex = advViewPager.getCurrentItem();//if((num -1) != currentIndex){    advViewPager.setCurrentItem(advViewPager.getCurrentItem() + 1);// }else{    //最后一张广告//     advViewPager.setCurrentItem(0);// }handler.postDelayed(advPlay, ADVWAITTIME);}}}};

说明：注释相关代码后，发现就可以了。

具体原因不明。

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