收到 iOS 推送通知时打开视图控制器

问题描述

我想在用户点击收到的推送通知消息时打开一个特定的视图控制器，但是当我收到一个推送通知消息并单击该消息时，只有应用程序打开，但它没有重定向到特定的视图控制器.

I want to open a specific view controller when a user clicks on the received push notification message, but when I receive a push notification message and click the message, only the application opens, but it does not redirect to a specific view controller.

我的代码是

-(void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo {
    if (applicationIsActive) {
        UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Bildirim"
                                                            message:[NSString stringWithFormat:@"%@ ",[[userInfo objectForKey:@"aps"] objectForKey:@"alert"]]
                                                           delegate:self cancelButtonTitle:@"Ok"
                                                  otherButtonTitles:nil];
        [alertView show];

        UIViewController *vc = self.window.rootViewController;
        PushBildirimlerim *pvc = [vc.storyboard instantiateViewControllerWithIdentifier:@"PushBildirimlerim "];

        [vc presentViewController:pvc animated:YES completion:nil];
     }
}

我的问题与 iOS 推送通知有关.

My question is related with the iOS push notifications.

推荐答案

您可能遇到了 if (applicationIsActive) 条件的问题.

You may be having issues with the if (applicationIsActive) condition.

在-didReceiveRemoteNotification上打个断点，看是否在不同的场景下执行，看是否在if-条件之内.

Put a breakpoint on -didReceiveRemoteNotification and see whether it executes in different scenarios and see if it goes within the if-condition.

(在一定程度上无关但值得检查)这个问题:
在后台时didReceiveRemoteNotification

-didReceiveRemoteNotification 如果您的应用(最初)关闭并且您点击了推送通知以打开应用，则
将不会执行.
当应用程序在前台或应用程序从后台转换到前台时收到推送通知时，将执行此方法.

-didReceiveRemoteNotification will not execute if your app was (initially) closed and you clicked on the push notification to open the app.
This method executes when a push notification is received while the application is in the foreground or when the app transitions from background to foreground.

Apple 参考:https://developer.apple.com/documentation/uikit/uiapplicationdelegate

如果应用程序正在运行并收到远程通知，则应用程序调用此方法来处理通知.你的实施这种方法应该使用通知采取适当的课程行动.
...
如果在推送通知到达时应用程序未运行，则该方法启动应用程序并在启动选项字典.app没有调用这个方法来处理那个推送通知.相反，你的实现application:willFinishLaunchingWithOptions: 或application:didFinishLaunchingWithOptions: 方法需要获取推送通知有效负载数据并做出适当响应.

所以...当应用未运行并收到推送通知时，当用户点击推送通知时，应用将启动并且现在... 推送通知内容将在 -didFinishLaunchingWithOptions: 方法的 launchOptions 参数中可用.

---

So... When the app is not running and a push notification is received, when the user clicks on the push notification, the app is launched and now... the push notification contents will be available in the -didFinishLaunchingWithOptions: method in it's launchOptions parameter.

换句话说... -didReceiveRemoteNotification 这次不会执行，你也需要这样做:

In other words... -didReceiveRemoteNotification won't execute this time and you'll also need to do this:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    //...
    NSDictionary *userInfo = [launchOptions valueForKey:@"UIApplicationLaunchOptionsRemoteNotificationKey"];
    NSDictionary *apsInfo = [userInfo objectForKey:@"aps"];

    if(apsInfo) {
        //there is some pending push notification, so do something
        //in your case, show the desired viewController in this if block
    }
    //...
}

另请阅读Apple 关于处理本地和远程通知的文档

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