距离传感器的使用

//开启距离感应功能

[UIDevice currentDevice].proximityMonitoringEnabled = YES;

//监听距离感应的通知

[[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(proximityChange:) name:UIDeviceProximityStateDidChangeNotification object:nil];

-(void)proximityChange:(NSNotificationCenter*)notification {

if([UIDevicecurrentDevice].proximityState==YES)

{

NSLog(@"某个物体靠近了设备屏幕");//屏幕会自动锁住

}else{

NSLog(@"某个物体远离了设备屏幕");//屏幕会自动解锁

}

}