清除當地通知的應用程序徽章

Question

我正在嘗試清除我的應用程序的「未讀」徽章，其中包含UILocalNotification。從邏輯上講，你會認爲這會通過設置UILocalNotification實例applicationIconBadgeNumber 0做，但它不工作，併爲applicationIconBadgeNumber文檔說「默認值是0，表示」沒有變化「。」

所以真的沒有辦法清除與本地通知徽章一旦它被設置

更新：一些簡單的代碼：

-(void)applicationDidFinishLaunching 
{ 
    // Set the appication icon badge to 1 in 10 minutes, using a local notification so it works in the background: 
    // This works fine. 

    UILocalNotification *episodeNotification = [[UILocalNotification alloc] init]; 
    episodeNotification.fireDate = [NSDate dateWithTimeIntervalSinceNow:(60 * 10)]; 
    episodeNotification.timeZone = [NSTimeZone defaultTimeZone]; 
    episodeNotification.applicationIconBadgeNumber = 1; 

    [[UIApplication sharedApplication] scheduleLocalNotification:episodeNotification]; 
    [episodeNotification release]; 


    // Clear the application icon badge in 20 minutes, again using a local notifcation so it works in the background: 
    // This doesn't work. According to the docs for local notification it's not supposed to 
    // because (applicationIconBadgeNumber = 0) means "Do not change the badge" 
    // I'm looking for an alternative if it exists. 

    UILocalNotification *clearEpisodeNotification = [[UILocalNotification alloc] init]; 
    clearEpisodeNotification.fireDate = [NSDate dateWithTimeIntervalSinceNow:(60 * 20)]; 
    clearEpisodeNotification.timeZone = [NSTimeZone defaultTimeZone]; 
    clearEpisodeNotification.applicationIconBadgeNumber = 0; 

    [[UIApplication sharedApplication] scheduleLocalNotification:clearEpisodeNotification]; 
    [clearEpisodeNotification release]; 
} 

Answer 1

我有同樣的問題。從本地通知中設置徽章時，將其設置爲0是「不變」的默認設置，而直接從應用程序執行則會清除它。通過本地通知將其設置爲負數解決了問題。

嘗試：

clearEpisodeNotification.applicationIconBadgeNumber = -1; 

Answer 2

是的，這是可能的清除程序本身的徽章

我在我的一個應用程序中使用下面的代碼，並且它按預期工作（即清除徽章）：

//clear app badge 
[UIApplication sharedApplication].applicationIconBadgeNumber=0;