IOS监听网络状态&以及方法冲突解决

首先，项目要在App打开时监听网络状态，Wi-Fi和运营商有网络时开启MQTT连接。利用AFN实现网络状态监听。

1、在AppDelegate.m中引入#import "AFNetworking.h"

枚举网络状态

typedef enum : NSUInteger {

unknown,

notConnect,

wwan,

wifi,

} Networkstatus;

开启网络监听

[self networkMonitoring];//开启网络监听

#pragma mark - NetworkMonitoring

-(void)networkMonitoring{

AFNetworkReachabilityManager *manager = [AFNetworkReachabilityManager sharedManager];

[manager startMonitoring];//开启监听

[manager setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {

switch (status) {

case AFNetworkReachabilityStatusUnknown:

self.networkstatus = unknown;

NSLog(@"当前网络未知");

break;

case AFNetworkReachabilityStatusNotReachable:

self.networkstatus = notConnect;

NSLog(@"当前无网络连接");

break;

case AFNetworkReachabilityStatusReachableViaWiFi:

self.networkstatus = wifi;

//连接 mqtt服务器

[self connnetMQTTServer];

NSLog(@"当前使用无线网络");

break;

case AFNetworkReachabilityStatusReachableViaWWAN:

self.networkstatus = wwan;

//连接 mqtt服务器

[self connnetMQTTServer];

NSLog(@"当前使用运营商网络");

break;

default:

break;

}

}];

}

到这为止已经可以监听网络方法，但是因为监听是耗时操作，如果在首页viewController中同样写这个方法当返回时只走一个viewController，在Appdelegete的方法不会 执行

因此，在别的页面用通知监听状态改变

//-(void)viewDidLoad 中

[[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(AFNNetWorkStatusChanged:) name:AFNetworkingReachabilityDidChangeNotification object:nil];

- (void)AFNNetWorkStatusChanged:(NSNotification *)notice{

NSDictionary *dic = notice.userInfo; //获取网络状态

NSInteger status = [[dic objectForKey:@"AFNetworkingReachabilityNotificationStatusItem"] integerValue];

if(status == AFNetworkReachabilityStatusNotReachable) {

//无网络连接

[self.locService stopUserLocationService];//停止定位

UIAlertView *alertV = [[UIAlertView alloc] initWithTitle:@"温馨提示" message:@"当前暂无网络连接" delegate:nil cancelButtonTitle:@"确定" otherButtonTitles: nil];

[alertV show];

}else if (status == AFNetworkReachabilityStatusReachableViaWiFi || status == AFNetworkReachabilityStatusReachableViaWWAN) { }else{

}

}

—— end ——