檢測應用程序是否從鎖定屏幕打開

Question

我正在創建一個顯示監視器iBeacon區域的應用程序，這意味着當設備被鎖定並在信標範圍內時，我的應用程序圖標會顯示在底部的鎖定屏幕上剩下。

有沒有什麼辦法可以檢測我的應用程序是否通過此鎖屏圖標啓動，並運行一些代碼？

Answer 1

當圖標出現時，表示已輸入信標區域。圖標第一次出現時將調用CLLocationManager代表的didEnterRegion方法。

您可以在那裏放置自定義代碼來設置一個標誌，指示出現的圖標。

- (void)locationManager:(CLLocationManager *)manager didEnterRegion:(CLRegion *)region { 
    _iconShown = YES; 
} 

然後，當你的應用程序來到前臺，您可以檢查此標誌，看它是否被設置，並執行自定義邏輯：

- (void)applicationWillEnterForeground:(UIApplication *)application { 
    if (_iconShown) { 
     _iconShown = NO; 

     // Put custom logic here for launching from the icon 
    } 
} 

Answer 2

嗯，還存在另一種方式，你可以處理它，只是創建一個變量self.backgroundedToLockScreen像：

- (void)applicationWillEnterForeground:(UIApplication *)application { 
    if (self.backgroundedToLockScreen) { 
     ... // app was backgrounded to lock screen 
    } else { 
     ... // app was backgrounded on purpose by tapping the home button or switching apps. 
    } 
    self.backgroundedToLockScreen = NO; 
} 

和

- (void)applicationWillEnterForeground:(UIApplication *)application { 
    UIApplicationState state = [[UIApplication sharedApplication] applicationState]; 
    if (UIApplicationStateInactive == state || // detect if coming from locked screen (iOS 6) 
     self.backgroundedToLockScreen)   // detect if backgrounded to the locked screen (iOS 7) 
    { 
     ... // app is coming from or was backgrounded to lock screen 
    } else { 
     ... // app was backgrounded on purpose by tapping the home button or switching apps 
    } 
    self.backgroundedToLockScreen = NO; 
} 

希望這可能是對你有用。