IOS App 跳转通知设置界面，IOS App 是否授权开启通知

//判断推送通知是否开启

+ (BOOL)getIsOpenNotify
{
    bool isEnable = false;
    if ([[UIDevice currentDevice].systemVersion floatValue] >= 8.0f)
    { 
        // iOS版本 >=8.0 处理逻辑
        UIUserNotificationSettings *setting = [[UIApplication sharedApplication] currentUserNotificationSettings];
        isEnable = setting.types != UIUserNotificationTypeNone;
    } 
    else 
    { 
        // iOS版本 <8.0 
        UIRemoteNotificationType type = [[UIApplication sharedApplication] enabledRemoteNotificationTypes];
        isEnable = UIRemoteNotificationTypeNone != type;
    }
    if (isEnable)
    {
        isEnable true;
    }

    return isEnable;
    
}
 

//跳转到开启推送通知
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]]