IOS 通知显示两次默认和我的通知警报

Posted 2023-02-24

【中文标题】IOS 通知显示两次默认和我的通知警报

【英文标题】：IOS notification showing twice with default and my notification alert

【发布时间】：2016-07-25 05:42:34

【问题描述】：

我不是 ios 程序员，所以请多多包涵。我能够收到推送通知，但我在屏幕上收到两个警报。

问题 1： -我在下面创建的UIAlertView* alertWindow - 第二个似乎是默认的通知警报窗口。创建第二个窗口我做错了什么？

问题 2： 当设备被锁定时，我可以在屏幕上看到通知，但这是默认的通知窗口。我在didReceiveRemoteNotification 中没有看到包含我收到的详细信息的通知。

另外，如果有人能解释didFinishLaunchingWithOptions 中的if else 块，我将不胜感激。我复制粘贴了。

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions 
    NSString *AMAZON_SERVER = @"xxxxxx";

    UIUserNotificationType userNotificationTypes = (UIUserNotificationTypeAlert |
                                                UIUserNotificationTypeBadge |
                                                UIUserNotificationTypeSound);
    UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:userNotificationTypes
                                                                         categories:nil];
    [application registerUserNotificationSettings:settings];
    [application registerForRemoteNotifications];

    [Parse initializeWithConfiguration:[ParseClientConfiguration configurationWithBlock:^(id<ParseMutableClientConfiguration> configuration) 
        configuration.applicationId = APPLICATION_ID;
        configuration.clientKey = CLIENT_KEY;
        configuration.server = AMAZON_SERVER;
    ]];

    [PFAnalytics trackAppOpenedWithLaunchOptions:launchOptions];

    [Fabric with:@[[Digits class]]];

    if ([[UIApplication sharedApplication] respondsToSelector:@selector(registerUserNotificationSettings:)])
    
        [[UIApplication sharedApplication] registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:(UIUserNotificationTypeSound | UIUserNotificationTypeAlert | UIUserNotificationTypeBadge) categories:nil]];

    
    else
    
        [[UIApplication sharedApplication] registerForRemoteNotificationTypes:
        (UIUserNotificationTypeBadge | UIUserNotificationTypeSound | UIUserNotificationTypeAlert)];
    

    [[UIApplication sharedApplication] registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:(UIUserNotificationTypeSound | UIUserNotificationTypeAlert | UIUserNotificationTypeBadge) categories:nil]];

    [application registerUserNotificationSettings:settings];
    [application registerForRemoteNotifications];

    if([[NSUserDefaults standardUserDefaults] boolForKey:@"FirstLaunch"]!=TRUE)
    
        [[NSUserDefaults standardUserDefaults] setBool:FALSE forKey:@"FirstLaunch"];
        [[NSUserDefaults standardUserDefaults] synchronize];
    
    //storedevice Type in standardUserDefaults
    [self setDeviceType];
    return YES;


- (void)application:(UIApplication *)application didRegisterUserNotificationSettings:(UIUserNotificationSettings *)notificationSettings 
    [application registerForRemoteNotifications];


- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken 
    // Store the deviceToken in the current installation and save it to Parse.
    PFInstallation *currentInstallation = [PFInstallation currentInstallation];
    [currentInstallation setDeviceTokenFromData:deviceToken];
    [currentInstallation saveInBackground];


- (void)application:(UIApplication *)app didFailToRegisterForRemoteNotificationsWithError:(NSError *)err 
    NSLog(@"Error in registration. Error: %@", err);


- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo 
    [PFPush handlePush:userInfo];
    if ([userInfo objectForKey:@"aps"]) 
        NSMutableDictionary * apsData = [userInfo objectForKey:@"aps"];
        NSString* alert = [apsData objectForKey:@"alert"];
    ...
    ...

        UIAlertView* alertWindow = [[UIAlertView alloc] initWithTitle: alertHeader
                                                    message: message
                                                   delegate: self
                                          cancelButtonTitle: @"OK"
                                          otherButtonTitles: nil];

        [alertWindow show];
        AudioServicesPlaySystemSound(kSystemSoundID_Vibrate);
     else 
        [PFPush handlePush:userInfo];
    

【问题讨论】：

您已注册两次。所以问题就出现了

请检查 didrecieve 通知中的设备状态，如果它处于活动状态，则显示警报，否则不显示。因为处于活动状态的通知横幅不会显示。

@HariKrishnan.P 你能指出我在哪里注册了两次吗？

@SagarShirbhate 如何检查设备状态，你的意思是didReceiveRemoteNotification

-(void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo application.applicationIconBadgeNumber = 0; // 应用程序状态。 if (application.applicationState == UIApplicationStateActive) // 如果 applicationState 为 Inactive 则无事可做，iOS 已显示警报视图。 [警报视图显示]；

【参考方案1】：

 First uninstall the app and try it. It will work fine same problem i am facing.

 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions 


    [Parse initializeWithConfiguration:[ParseClientConfiguration configurationWithBlock:^(id<ParseMutableClientConfiguration> configuration) 
        configuration.applicationId = APPLICATION_ID;
        configuration.clientKey = CLIENT_KEY;
        configuration.server = AMAZON_SERVER;
    ]];

    [PFAnalytics trackAppOpenedWithLaunchOptions:launchOptions];

    [Fabric with:@[[Digits class]]];



    if([[NSUserDefaults standardUserDefaults] boolForKey:@"FirstLaunch"]!=TRUE)
    
        [[NSUserDefaults standardUserDefaults] setBool:FALSE forKey:@"FirstLaunch"];
        [[NSUserDefaults standardUserDefaults] synchronize];
    
    //storedevice Type in standardUserDefaults
    [self setDeviceType];
       #here i am edited

    if ([[UIApplication sharedApplication] respondsToSelector:@selector(registerUserNotificationSettings:)])
   


    UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:(UIUserNotificationTypeAlert | UIUserNotificationTypeBadge | UIUserNotificationTypeSound) categories:nil];
    [[UIApplication sharedApplication] registerUserNotificationSettings:settings];
    [[UIApplication sharedApplication] registerForRemoteNotifications];


else


    [[UIApplication sharedApplication] registerForRemoteNotificationTypes:
     (UIUserNotificationTypeBadge | UIUserNotificationTypeSound | UIUserNotificationTypeAlert)];






    return YES;

// remove the below methods

    - (void)application:(UIApplication *)application didRegisterUserNotificationSettings:(UIUserNotificationSettings *)notificationSettings 
    [application registerForRemoteNotifications];


- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken 
    // Store the deviceToken in the current installation and save it to Parse.
    PFInstallation *currentInstallation = [PFInstallation currentInstallation];
    [currentInstallation setDeviceTokenFromData:deviceToken];
    [currentInstallation saveInBackground];


- (void)application:(UIApplication *)app didFailToRegisterForRemoteNotificationsWithError:(NSError *)err 
    NSLog(@"Error in registration. Error: %@", err);


- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo 
    //[PFPush handlePush:userInfo];
    if ([userInfo objectForKey:@"aps"]) 
        NSMutableDictionary * apsData = [userInfo objectForKey:@"aps"];
        NSString* alert = [apsData objectForKey:@"alert"];
    ...
    ...

        UIAlertView* alertWindow = [[UIAlertView alloc] initWithTitle: alertHeader
                                                    message: message
                                                   delegate: self
                                          cancelButtonTitle: @"OK"
                                          otherButtonTitles: nil];

        [alertWindow show];
        AudioServicesPlaySystemSound(kSystemSoundID_Vibrate);
     else 
        [PFPush handlePush:userInfo];
    

【参考方案2】：

你的if语句说如果你的[UIApplication sharedApplication]实例实现了registerUserNotificationSettings:方法，那么它将执行if块，否则它将执行else块。