ios - didReceiveRemoteNotification : fetchCompletionHandler: open from icon vs push notification

Question

我正在尝试实现后台推送通知处理，但我无法确定用户是通过发送的推送通知打开应用程序，还是通过图标打开应用程序。

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler {

    //************************************************************
    // I only want this called if the user opened from swiping the push notification. 
    // Otherwise I just want to update the local model
    //************************************************************
    if(applicationState != UIApplicationStateActive) {
        MPOOpenViewController *openVc = [[MPOOpenViewController alloc] init];
        [self.navigationController pushViewController:openVc animated:NO];
    } else {
        ///Update local model
    }

    completionHandler(UIBackgroundFetchResultNewData);
}

使用此代码，无论用户如何打开应用程序，应用程序都会向 MPOOpenViewController 打开。我怎样才能做到只有当他们通过滑动通知打开应用程序时才会推送 View Controller ？

使用相同的代码，这在 iOS 6 上有效，但使用新的 iOS 7 方法，它的行为并不像我想要的那样。

编辑:我正在尝试在 iOS 7 上运行该应用程序，我们不支持 iOS 7 之前的任何版本。我在 iOS 6 版本的方法(没有完成处理程序)并且它的行为符合我的预期。你会滑动通知，这会被调用。如果您从图标打开，则永远不会调用该方法。

Answer 1

好吧，我明白了。该方法实际上被调用了两次(一次是在它收到推送时，一次是在用户与图标或通知交互时)。

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler {

    if(application.applicationState == UIApplicationStateInactive) {

        NSLog(@"Inactive");

        //Show the view with the content of the push

        completionHandler(UIBackgroundFetchResultNewData);

    } else if (application.applicationState == UIApplicationStateBackground) {

        NSLog(@"Background");

        //Refresh the local model

        completionHandler(UIBackgroundFetchResultNewData);

    } else {

        NSLog(@"Active");

        //Show an in-app banner

        completionHandler(UIBackgroundFetchResultNewData);

    }
}

感谢 Tim Castelijns 添加以下内容:

Note: the reason it's called twice is due to the Payload having content_available : 1. If you remove the key and its value, then it will only run upon tapping. This will not solve everyone's problem since some people need that key to be true