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  • iOS开发之应用内检测手机锁屏,解锁状态

    iPhone的锁屏监测分为两种方式监听:

    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:

    #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;

    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);

        }

    }

    关于 notify.h 请移步到:

    https://developer.apple.com/library/mac/documentation/Darwin/Reference/ManPages/man3/notify_register_check.3.html

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  • 原文地址:https://www.cnblogs.com/daguo/p/4171389.html
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