iOS实现关闭/开启自动锁屏
1 不自动锁屏
[UIApplication sharedApplication].idleTimerDisabled=YES; // 不自动锁屏
2 自动锁屏
[UIApplication sharedApplication].idleTimerDisabled=NO; // 自动锁屏

iOS 检测屏幕状态（是否锁屏）引用 ，收藏一下https://www.jianshu.com/p/fbb3c500853d

1定义宏
//锁屏通知

define NotificationOff CFSTR("com.apple.springboard.lockcomplete")

//解锁通知

define NotificationOn CFSTR("com.apple.springboard.hasBlankedScreen")

2.注册屏幕监听事件
CFNotificationCenterAddObserver(CFNotificationCenterGetDarwinNotifyCenter(), NULL, ListeningScreenLockState, NotificationOff, NULL, CFNotificationSuspensionBehaviorDeliverImmediately);

CFNotificationCenterAddObserver(CFNotificationCenterGetDarwinNotifyCenter(), NULL, ListeningScreenLockState, NotificationOn, NULL, CFNotificationSuspensionBehaviorDeliverImmediately);

3.监听方法
static void ListeningScreenLockState(CFNotificationCenterRef center,void* observer,CFStringRef name,const void* object,CFDictionaryRef userInfo)

{

NSString* screenState = (__bridge NSString*)name;

if ([screenState isEqualToString:(__bridge  NSString*)NotificationOff]) {
    
    NSLog(@"********锁屏**********");
    
} else {
    
    NSLog(@"********解锁**********");
 
}

}

二.监听结果 调用方法

由于监听方法为C函数 需要在c函数里面调用iOS 方法

1.将类定义成：

static MinshLivenessViewController *selfClass = nil;
self赋给selfClass
selfClass = self;(我是将这句代码写在viewDidLoad 里面)
3.在c函数里面调用：

[selfClass 方法名];