应用程序在后台时如何增加徽章编号 [英] How to increase badge number when application is in background

问题描述

我正在使用此代码。当推送通知到来时，每个东西都正常工作但是当应用程序在后台时，徽章编号不会增加。如何解决这个问题呢？

I am using this code. Every thing is working fine when push notification comes but badge number does not increase when application is in background. How to solve this problem?

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    // Override point for customization after application launch.

    [[UIApplication sharedApplication] registerForRemoteNotificationTypes:(UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound)];

    //UIApplication *application = [UIApplication sharedApplication];
    NSInteger badgeNumber = [application applicationIconBadgeNumber];// Take the current badge number
    //badgeNumber--;    // decrement by one
    [application setApplicationIconBadgeNumber:[[[launchOptions valueForKey:@"aps"]valueForKey:@"badge"]integerValue]];  // set ne badge number

    NSLog(@"userInfo :%@  %d",launchOptions,[[[launchOptions valueForKey:@"aps"]valueForKey:@"badge"]integerValue]);


    return YES;
}

推荐答案

当应用程序在background didFinishLaunchingWithOptions 方法永远不会调用。为了在你的应用程序处于后台时做某事，你需要在 AppDelegate的 applicationDidEnterBackground ：方法中实现你的逻辑。

When the application is in the background didFinishLaunchingWithOptions method never calls. For doing something when your App is in background you need to implement your logic in AppDelegate's applicationDidEnterBackground: method like.

- (void)applicationDidEnterBackground:(UIApplication *)application{

[UIApplication sharedApplication].applicationIconBadgeNumber = 2;
}

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