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ActivityUI线程和Timer的冲突

新建了一个音乐播放器,在实现seekbar时用到了Timer和TimerTask:

ActivityUI线程和Timer的冲突images/loading.gif' 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" width="619" height="173" />

在OnDestory中我注销了播放器,但没有管Timer,所以当程序退出后Timer还在执行,程序出现了这样的错误:

ActivityUI线程和Timer的冲突

因为在OnDestory中我已经注销了MediaPlayer,但Timer运行的过程中调用MediaPlayer.getCurrentPosition(),所以程序出现了错误。

所以在OnDestory中加上timer.cancel()便解决了错误。




原标题:ActivityUI线程和Timer的冲突

关键词:线程

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