ios app图片角标

   UIUserNotificationType myType =UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeSound;

    UIUserNotificationSettings *mySetting = [UIUserNotificationSettingssettingsForTypes:myType categories:nil];

    [[UIApplicationsharedApplication] registerUserNotificationSettings:mySetting];

    [UIApplicationsharedApplication].applicationIconBadgeNumber =9999;