应用锁屏 ／解锁 操做监听

相关宏定义：

#define NotificationLock CFSTR("com.apple.springboard.lockcomplete")

#define NotificationChange CFSTR("com.apple.springboard.lockstate")

#define NotificationPwdUI CFSTR("com.apple.springboard.hasBlankedScreen")

 

 

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

    [self addScreenStatusObserve];  // 视频锁屏监听

    /*

     应用程序自身代理的方法直接写需求便可。方法以下：

    

     ／／ 进入前台

    1. - (void)applicationWillEnterForeground:(UIApplication *)application

    

     ／／ 非活动状态，会在后台保持一段时间，再将程序杀死

    2. - (void)applicationDidBecomeActive:(UIApplication *)application

 

     */

    return YES;

}

 

 

- (void)addScreenStatusObserve {

    CFNotificationCenterAddObserver(CFNotificationCenterGetDarwinNotifyCenter(), NULL, screenLockStateChanged, NotificationLock, NULL, CFNotificationSuspensionBehaviorDeliverImmediately);

    

    CFNotificationCenterAddObserver(CFNotificationCenterGetDarwinNotifyCenter(), NULL, screenLockStateChanged,  NotificationChange, NULL, CFNotificationSuspensionBehaviorDeliverImmediately);

}

 

 

static void screenLockStateChanged(CFNotificationCenterRef center,void* observer,CFStringRef name,const void* object,CFDictionaryRef userInfo)

{

    

    NSString* lockstate = (__bridge NSString*)name;

    

    if ([lockstate isEqualToString:(__bridge  NSString*)NotificationLock]) {

        

        NSLog(@"locked.");

        

    } else if ([lockstate isEqualToString:(__bridge  NSString*)NotificationChange]) {

        

        NSLog(@"lock state changed.");

        

    }

    

}