2018-06-25. IOS学习小知识点1

一、判断用户手机上本APP是否打开了远程推送

在ios7和ios8的判断是不一样的

ios8之后：

        UIUserNotificationSettings *setting = [[UIApplication sharedApplication] currentUserNotificationSettings];

        if (UIUserNotificationTypeNone == setting.types) {//没有打开远程推送

            return NO;

        }

ios7：

if([[UIApplication sharedApplication] enabledRemoteNotificationTypes]==UIRemoteNotificationTypeNone){//没有打开远程推送

           return NO;

}

综合起来就是：

#define IOS8_0R_LATER    ([[[UIDevice currentDevice] systemVersion] floatValue] >=8.0)

if(IOS8_0R_LATER){

         UIUserNotificationSettings *setting = [[UIApplication sharedApplication] currentUserNotificationSettings];

         if (UIUserNotificationTypeNone == setting.types) {//没有打开远程推送

                return NO;

        }

}else{

        if([[UIApplication sharedApplication] enabledRemoteNotificationTypes]==UIRemoteNotificationTypeNone){//没有打开远程推送

               return NO;

        }

}

二、打开  自己APP的设置界面 (可以设置推送和位置权限)

NSURL * url = [NSURL URLWithString:UIApplicationOpenSettingsURLString]；

if([[UIApplicationsharedApplication] canOpenURL:url]) {

           if(@available(iOS10.0, *)) {

                    [[UIApplication sharedApplication] openURL:url options:@{} completionHandler:nil];

            }else{

                    [[UIApplicationsharedApplication]openURL:url];

            }

}