iOS UnuseNotificationCenter didReceiveNotificationResponse仅在后台打开应用程序时运行代码

如果应用程序处于

非活动状态

或处于

后台

，是否可以有条件地运行代码

以下是两种情况：

• 如果应用程序处于后台或非活动状态，我希望运行此代码块
• 如果应用程序被终止并按通知启动，则应用程序I不想运行此代码块

这是我的密码：

// Push notification received in background
- (void)userNotificationCenter:(UNUserNotificationCenter *)center didReceiveNotificationResponse:(UNNotificationResponse *)response withCompletionHandler:(void (^)(void))completionHandler {
  NSDictionary *userInfo = response.notification.request.content.userInfo;

  [[SEGAnalytics sharedAnalytics] receivedRemoteNotification:userInfo];

  if ([HSBeacon isBeaconPushNotification:userInfo]) {
    UIApplication *applicaiton = [UIApplication sharedApplication];

    // @todo Do not run if app was killed
    if (application.applicationState == UIApplicationStateInactive || application.applicationState == UIApplicationStateBackground) {
      NSString *helpScoutBeaconID = [[NSBundle mainBundle] objectForInfoDictionaryKey:@"HelpScoutBeaconID"];
      HSBeaconSettings *settings = [[HSBeaconSettings alloc] initWithBeaconId:helpScoutBeaconID];
      [HSBeacon handlePushNotification:userInfo beaconSettings:settings];
    }
    // End of conditional code
  }

  completionHandler();
}

我试过使用：

    UIApplication *applicaiton = [UIApplication sharedApplication];

    if ( application.applicationState == UIApplicationStateInactive || application.applicationState == UIApplicationStateBackground) {
      ...
    }

但是，当应用程序被关闭、处于非活动状态或处于后台时，就会触发此命令

---

谢谢

感觉一定有更好的方法可以做到这一点，但我认为一种可行的方法是保留一个您设置的局部变量：

- (void)userNotificationCenter:(UNUserNotificationCenter *)center willPresentNotification:(UNNotification *)notification withCompletionHandler:(void (^)(UNNotificationPresentationOptions options))completionHandler;

仅当应用程序当前位于前台时，才会调用该委托，因此如果您具有类似

@property (nonatomic, assign) BOOL receivedWillPresentNotification;

然后，您可能会像这样实现它

- (void)userNotificationCenter:(UNUserNotificationCenter *)center willPresentNotification:(UNNotification *)notification withCompletionHandler:(void (^)(UNNotificationPresentationOptions options))completionHandler {
  // Whatever other logic you have here
  self.receivedWillPresentNotification = YES;
}

- (void)userNotificationCenter:(UNUserNotificationCenter *)center didReceiveNotificationResponse:(UNNotificationResponse *)response withCompletionHandler:(void (^)(void))completionHandler {
  NSDictionary *userInfo = response.notification.request.content.userInfo;

  [[SEGAnalytics sharedAnalytics] receivedRemoteNotification:userInfo];

  if ([HSBeacon isBeaconPushNotification:userInfo] && self.receivedWillPresentNotification) {
      NSString *helpScoutBeaconID = [[NSBundle mainBundle] objectForInfoDictionaryKey:@"HelpScoutBeaconID"];
      HSBeaconSettings *settings = [[HSBeaconSettings alloc] initWithBeaconId:helpScoutBeaconID];
      [HSBeacon handlePushNotification:userInfo beaconSettings:settings];
  }

  self.receivedWillPresentNotification = NO;
  completionHandler();
}

---

还有一个可能更好的解决方案，就是在

applicationdFinishLaunching

中检查通知，然后检查应用程序的状态，以便存储，但我认为您可能会使用其他

UNUserNotificationCenterDelegate

方法作为代理。

谢谢@ScottPetit的回答！我不得不改变一些事情，但我还是能做到：

AppDelegate.h

// Use a local variable to determine if we deeplink to help scout chat
@property (nonatomic, assign) BOOL launchedFromPushNotification;

AppDelegate.m

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
  NSDictionary *notification = [launchOptions objectForKey:UIApplicationLaunchOptionsRemoteNotificationKey];
  if (notification) {
    self.launchedFromPushNotification = YES;
  } else {
    self.launchedFromPushNotification = NO;
  }

  ...
}


// Push notification received in foreground
 - (void)userNotificationCenter:(UNUserNotificationCenter *)center
willPresentNotification:(UNNotification *)notification withCompletionHandler:(void (^)(UNNotificationPresentationOptions options))completionHandler{
  self.launchedFromPushNotification = NO;
}

// Push notification received in background
- (void)userNotificationCenter:(UNUserNotificationCenter *)center didReceiveNotificationResponse:(UNNotificationResponse *)response withCompletionHandler:(void (^)(void))completionHandler {
  NSDictionary *userInfo = response.notification.request.content.userInfo;

  if ([HSBeacon isBeaconPushNotification:userInfo] && !self.launchedFromPushNotification) {
    NSString *helpScoutBeaconID = [[NSBundle mainBundle] objectForInfoDictionaryKey:@"HelpScoutBeaconID"];
    HSBeaconSettings *settings = [[HSBeaconSettings alloc] initWithBeaconId:helpScoutBeaconID];
    [HSBeacon handlePushNotification:userInfo beaconSettings:settings];

    self.launchedFromPushNotification = NO;
  }

  completionHandler();
}

谢谢你的帮助