iOSReachability判断网络连接状态

// NetStateManage.h

// Created by miniu on 15/11/24.

#import <Foundation/Foundation.h>

#import "Reachability.h"

@protocol NetStateManageDelegate <NSObject>

@optional

-(void)networkStatusChange:(NetworkStatus)networkStatus;

@end

@interface NetStateManage : NSObject

@property (nonatomic,weak)id <NetStateManageDelegate>delegate;

+ (NetStateManage *)shareInstance;

//当前的网络状态

- (NetworkStatus)currentNetworkStatus;

@end

// NetStateManage.m

// Created by miniu on 15/11/24.

#import "NetStateManage.h"

@interface NetStateManage ()

{

Reachability *reachability;

NetworkStatus hostNetStatus;

}

@end

@implementation NetStateManage

- (instancetype)init

{

self = [super init];

if (self) {

//使用Reachability

[self useReachability];

}

return self;

}

- (void)useReachability{

// 监听网络状态改变的通知

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(networkStateChange) name:kReachabilityChangedNotification object:nil];

// 创建Reachability

reachability = [Reachability reachabilityForInternetConnection];

// 开始监控网络(一旦网络状态发生改变, 就会发出通知kReachabilityChangedNotification)

[reachability startNotifier];

}

// 处理网络状态改变

- (void)networkStateChange

{

// 1.检测wifi状态

Reachability *wifi = [Reachability reachabilityForLocalWiFi];

// 2.检测手机是否能上网络(WIFI3G2.5G)

Reachability *conn = [Reachability reachabilityForInternetConnection];

// 3.判断网络状态

if ([wifi currentReachabilityStatus] != NotReachable) { // 有wifi

NSLog(@"有wifi");

hostNetStatus=ReachableViaWiFi;

} else if ([conn currentReachabilityStatus] != NotReachable) { // 没有使用wifi, 使用手机自带网络进行上网

NSLog(@"使用手机自带网络进行上网");

hostNetStatus=ReachableViaWWAN;

}else { // 没有网络

NSLog(@"没有网络");

hostNetStatus=NotReachable;

}

if ([self.delegate respondsToSelector:@selector(networkStatusChange:)]) {

[self.delegate networkStatusChange:hostNetStatus];

}

+ (NetStateManage *)shareInstance

{

static NetStateManage *hardwareManager=nil;

static dispatch_once_t onceToken;

dispatch_once(&onceToken, ^{

hardwareManager=[[self alloc] init];

});

return hardwareManager;

}

//返回当前的网络状态

- (NetworkStatus)currentNetworkStatus

{

return [reachability currentReachabilityStatus];

}

@end