IOS开发—IOS 8 中设置applicationIconBadgeNumber和消息推送

因为在IOS8中要想设置applicationIconBadgeNumber，需要用户的授权，在IOS8中，需要加上下面的代码：

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

float version = [[[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： 

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

if (version >= 8.0) {
    UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeBadge categories:nil];
    [[UIApplication sharedApplication] registerUserNotificationSettings:settings];
    [application registerForRemoteNotifications];
}

感谢分享