1. 程序在前台，这种比较简单。直接使用Darwin层的通知就可以了：
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#import <notify.h>#define NotificationLock CFSTR("com.apple.springboard.lockcomplete")#define NotificationChange CFSTR("com.apple.springboard.lockstate")#define NotificationPwdUI CFSTR("com.apple.springboard.hasBlankedScreen")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 { NSLog(@"lock state changed."); }}- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions{ // Override point for customization after application launch. CFNotificationCenterAddObserver(CFNotificationCenterGetDarwinNotifyCenter(), NULL, screenLockStateChanged, NotificationLock, NULL, CFNotificationSuspensionBehaviorDeliverImmediately); CFNotificationCenterAddObserver(CFNotificationCenterGetDarwinNotifyCenter(), NULL, screenLockStateChanged, NotificationChange, NULL, CFNotificationSuspensionBehaviorDeliverImmediately); //setScreenStateCb(); return YES;} |
2. 第二种是程序退后台后，这时再锁屏就收不到上面的那个通知了，需要另外一种方式, 以循环的方式一直来检测是否是锁屏状态，会消耗性能并可能被苹果挂起(有可能没作用)；
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static void setScreenStateCb(){ uint64_t locked; __block int token = 0; notify_register_dispatch("com.apple.springboard.lockstate",&token,dispatch_get_main_queue(),^(int t){ }); notify_get_state(token, &locked); NSLog(@"%d",(int)locked);}- (void)applicationDidEnterBackground:(UIApplication *)application{ while (YES) { setScreenStateCb(); sleep(1); }} |
以上所述是小编给大家介绍的iOS监听手机锁屏状态，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对服务器之家网站的支持！
原文链接：http://blog.csdn.net/bowei1105/article/details/71106457
