[iOS 多线程 & 网络 - 2.8] - 检测网络状态

 1 - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
 2     // 检测wifi状态
 3     Reachability *wifiStatus = [Reachability reachabilityForLocalWiFi];
 4    
 5     // 检测手机网络状态
 6     Reachability *netStatus = [Reachability reachabilityForInternetConnection];
 7    
 8     // 判断网络状态
 9     if ([wifiStatus currentReachabilityStatus] != NotReachable) {
10         NSLog(@"正在使用wifi上网");
11     } else if ([netStatus currentReachabilityStatus] != NotReachable) {
12         NSLog(@"正在使用手机网络上网");
13     } else {
14         NSLog(@"没有网络");
15     }  
16 }
17  

 1 //
 2 //  ViewController.m
 3 //  ReachabilityDemo
 4 //
 5 //  Created by hellovoidworld on 15/1/28.
 6 //  Copyright (c) 2015年 hellovoidworld. All rights reserved.
 7 //
 8 
 9 #import "ViewController.h"
10 #import "Reachability.h"
11 
12 @interface ViewController ()
13 
14 @property(nonatomic, strong) Reachability *networkStatus;
15 
16 @end
17 
18 @implementation ViewController
19 
20 - (void)viewDidLoad {
21     [super viewDidLoad];
22     // Do any additional setup after loading the view, typically from a nib.
23    
24     // 实时监控手机联网状态
25     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(detectNetworkStatus) name:kReachabilityChangedNotification object:nil];
26    
27     // 开启通知发送
28     self.networkStatus = [Reachability reachabilityForInternetConnection];
29     [self.networkStatus startNotifier];
30 }
31 
32 - (void)dealloc {
33     // 停止发送通知
34     [self.networkStatus stopNotifier];
35    
36     // 切记要删除通知
37     [[NSNotificationCenter defaultCenter] removeObserver:self];
38 }
39 
40 // 用WIFI
41 // [wifi currentReachabilityStatus] != NotReachable
42 // [conn currentReachabilityStatus] != NotReachable
43 
44 // 没有用WIFI, 只用了手机网络
45 // [wifi currentReachabilityStatus] == NotReachable
46 // [conn currentReachabilityStatus] != NotReachable
47 
48 // 没有网络
49 // [wifi currentReachabilityStatus] == NotReachable
50 // [conn currentReachabilityStatus] == NotReachable
51 
52 - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
53     [self detectNetworkStatus];
54 }
55 
56 - (void) detectNetworkStatus {
57     // 检测wifi状态
58     Reachability *wifiStatus = [Reachability reachabilityForLocalWiFi];
59    
60     // 检测手机网络状态
61     Reachability *netStatus = [Reachability reachabilityForInternetConnection];
62    
63     // 判断网络状态
64     if ([wifiStatus currentReachabilityStatus] != NotReachable) {
65         NSLog(@"正在使用wifi上网");
66     } else if ([netStatus currentReachabilityStatus] != NotReachable) {
67         NSLog(@"正在使用手机网络上网");
68     } else {
69         NSLog(@"没有网络");
70     }
71 }
72 
73 @end
74