转载自:http://blog.sina.com.cn/s/blog_66131494010169kb.html
[UIApplication sharedApplication].idleTimerDisabled=YES;不自动锁屏
[UIApplication sharedApplication].idleTimerDisabled=NO;自动锁屏
转载自:http://blog.sina.com.cn/s/blog_66131494010169kb.html
[UIApplication sharedApplication].idleTimerDisabled=YES;不自动锁屏
[UIApplication sharedApplication].idleTimerDisabled=NO;自动锁屏