iOS设置applicationIconBadgeNumber和消息推送

在IOS7中设置applicationIconBadgeNumber不会有什么问题，但是直接在IOS8中设置applicationIconBadgeNumber会报错，或者设置了不显示数字。

因为在IOS7以上中要想设置applicationIconBadgeNumber，需要用户的授权，需要加上下面的代码：

 UIUserNotificationSettings *settings = [UIUserNotificationSettingssettingsForTypes:UIUserNotificationTypeBadgecategories:nil];

        [[UIApplicationsharedApplication] registerUserNotificationSettings:settings];

//设置applicationIconBadgeNumber 数字

        [UIApplicationsharedApplication].applicationIconBadgeNumber=totalCount;

完整代码：

floatversion = [[[UIDevice currentDevice] systemVersion] floatValue];

     

if(version >= 8.0) {

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

    [[UIApplication sharedApplication] registerUserNotificationSettings:settings];

}

如果是注册消息推送的话，需要这样写：

floatversion = [[[UIDevice currentDevice] systemVersion] floatValue];

 

if(version >= 8.0) {

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

    [[UIApplication sharedApplication] registerUserNotificationSettings:settings];

    [application registerForRemoteNotifications];

}