iOS UNUserNotificationCenter didReceiveNotificationResponse 仅在应用程序在后台打开时运行代码答案

【问题标题】：iOS UNUserNotificationCenter didReceiveNotificationResponse only run code if app is open in backgroundiOS UNUserNotificationCenter didReceiveNotificationResponse 仅在应用程序在后台打开时运行代码
【发布时间】：2020-12-15 09:11:30
【问题描述】：

如果应用是inactive或background，是否可以有条件地运行代码。

这是两种情况：

如果应用在后台或处于非活动状态，我确实希望运行此代码块。
如果应用程序被终止并按下通知启动应用程序，我不想运行此代码块。

这是我的代码：

// 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();
}

我尝试过使用：

    UIApplication *applicaiton = [UIApplication sharedApplication];

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

但是当应用程序被终止、不活动或在后台时会触发。

谢谢

【问题讨论】：

标签： ios objective-c iphone push-notification apple-push-notifications

【解决方案1】：

感谢@ScottPetit 的回答！我不得不改变一些东西，但得到了它的工作：

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();
}

感谢您的帮助！

【讨论】：

【解决方案2】：

感觉必须有更好的方法来做到这一点，但我认为可行的一种方法是保留您设置的局部变量：

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

仅当应用程序当前处于前台时才会调用该委托，因此如果您有类似的属性

@property (nonatomic, assign) BOOL receivedWillPresentNotification;

那么你可能会像这样实现这个

- (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();
}

可能还有一个更好的解决方案，与检查 applicationDidFinishLaunching 中的通知和检查应用程序的状态有关，然后您可以在那里存储，但我认为您可能会使用另一个 @ 987654325@ 方法作为代理。

【讨论】：