iOS开发之检测设备锁屏

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

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

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

[self lookLockScreen];

return YES;

}

- (void)lookLockScreen
{
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]) {

//锁屏
NSLog(@"locked.");

} else {
//锁屏状态改变
NSLog(@"lock state changed.");

}

}