iOS開發——應用表徵圖上顯示訊息數量

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上載者:User

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  iOS8以前:

UIApplication *app = [UIApplication sharedApplication];

app.applicationIconBadgeNumber = num;

 

  iOS8及以後:

UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeBadge categories:nil];

[[UIApplication sharedApplication] registerUserNotificationSettings:settings];

  需要先設定它,才行。而且,需要注意一點,iOS8以前,不能帶它,iOS8及以後必須帶它。

 

  所以現在再用它的時候,需要先判斷系統版本號碼:

float version = [[[UIDevice currentDevice] systemVersion] floatValue];

if (version >= 8.0) {

   UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeBadge categories:nil];

  [[UIApplication sharedApplication] registerUserNotificationSettings:settings];

}

 

iOS開發——應用表徵圖上顯示訊息數量

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