iOS实现控制屏幕常亮不变暗的方法示例

//设置屏幕常亮[UIApplication sharedApplication].idleTimerDisabled = YES;//取消设置屏幕常亮[UIApplication sharedApplication].idleTimerDisabled = NO; //设置屏幕常亮[[UIApplication sharedApplication] setIdleTimerDisabled:YES];//取消设置屏幕常亮[[UIApplication sharedApplication] setIdleTimerDisabled:NO];

//监听锁屏变化[[UIApplication sharedApplication] addObserver:self forKeyPath:@"idleTimerDisabled" options:NSKeyValueObservingOptionNew context:nil]; - (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context{ // setToast(@"值改变操作"); if (![UIApplication sharedApplication].idleTimerDisabled) { [UIApplication sharedApplication].idleTimerDisabled = YES; }}  - (void)dealloc{ [[UIApplication sharedApplication] removeObserver:self forKeyPath:@"idleTimerDisabled"]; [UIApplication sharedApplication].idleTimerDisabled = NO;}