Reachability实时网络监听/AFNETWorking2.0+ 网络监听

最新推荐文章于 2023-01-29 08:13:01 发布

转载最新推荐文章于 2023-01-29 08:13:01 发布 · 268 阅读

本文介绍了一个iOS应用中实现网络状态监听的方法，通过Reachability类来监控网络连接的变化，并使用UIAlertView来提示用户网络连接的状态。

下载 官方 Reachability demo 导入Reachability.h .m 文件

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
    
    //开启网络状况的监听
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(reachabilityChanged:) name:kReachabilityChangedNotification object:nil];
    
    self.hostReach = [Reachability reachabilityWithHostName:@"www.baidu.com"] ;
    [self.hostReach startNotifier];  //开始监听，会启动一个run loop

    self.window.rootViewController = self.tabBarController;
    [self.window makeKeyAndVisible];
    return YES;
}

//网络链接改变时会调用的方法
-(void)reachabilityChanged:(NSNotification *)note
{
    Reachability *currReach = [note object];
    NSParameterAssert([currReach isKindOfClass:[Reachability class]]);
    
    //对连接改变做出响应处理动作
    NetworkStatus status = [currReach currentReachabilityStatus];
    //如果没有连接到网络就弹出提醒实况
    self.isReachable = YES;
    if(status == NotReachable)
    {
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"网络连接异常" message:@"暂无法访问书城信息" delegate:nil cancelButtonTitle:@"确定" otherButtonTitles:nil];
        [alert show];
        [alert release];
        self.isReachable = NO;
    }
    else
    {
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"网络连接信息" message:@"网络连接正常" delegate:nil cancelButtonTitle:@"确定" otherButtonTitles:nil];
        [alert show];
        [alert release];
        self.isReachable = YES;
    }
}

</pre><pre class="cpp" style="padding: 0px; color: rgb(17, 17, 17); line-height: 23px; font-size: 13px; margin-top: 0px; margin-bottom: 0px; white-space: pre-wrap; -ms-word-wrap: break-word; background-color: rgb(255, 255, 255);" name="code" code_snippet_id="411292" snippet_file_name="blog_20140630_3_6538612">AFNETWorking2.0+ 网络监听