ios 網路監測之Reachability

使用之前請從Apple網站下載樣本：點此下載

然後將Reachability.h 和 Reachability.m 加到自己的項目中，並引用 SystemConfiguration.framework，就可以使用了。

效果1：

 

 

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions{    self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];    // Override point for customization after application launch.    self.window.backgroundColor = [UIColor whiteColor];        //檢測網路情況    [self startNotificationNetwork];      [self.window makeKeyAndVisible];    return YES;}- (void)reachabilityChanged:(NSNotification *)notification{    Reachability *currentReach = [notification object];    NSParameterAssert([currentReach isKindOfClass:[Reachability class]]);    NetworkStatus status = [currentReach currentReachabilityStatus];    NSString *netMsg = nil;    switch (status) {        case NotReachable:        {            netMsg = @"網路不可用";            break;        }        case ReachableViaWiFi:        {            netMsg = @"通過WiFi上網";            break;        }        case ReachableViaWWAN:        {            netMsg = @"通過3G/GPRS上網";            break;        }    }    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"連網提示" message:netMsg delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];    [alert show];    [alert release];}-(void)startNotificationNetwork{    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(reachabilityChanged:) name:kReachabilityChangedNotification object:nil];    Reachability * hostReach = [[Reachability reachabilityWithHostName:@"www.baidu.com"] retain];    [hostReach startNotifier];}

 

致謝：http://www.cnblogs.com/mrhgw/archive/2012/08/01/2617760.html

 效果2：

//處理串連改變後的情況 //對串連改變做出響應的處理動作。- (void)updateInterfaceWithReachability: (Reachability*) curReach{    NetworkStatus status = [curReach currentReachabilityStatus];        if(status ==NotReachable) {        UIAlertView*alertView = [[UIAlertView alloc]initWithTitle:@"溫馨提示"                                                          message:@"網路連接失敗,請檢查網路"                                                         delegate:nil                                                cancelButtonTitle:@"確定"                                                otherButtonTitles:nil];        [alertView show];        [alertView release];    }else{        NSLog(@"connect with the internet successfully");    }    } //串連改變- (void)reachabilityChanged:(NSNotification* )note{    Reachability* curReach = [note object];    NSParameterAssert([curReach isKindOfClass: [Reachability class]]);    [self updateInterfaceWithReachability: curReach];}-(void)startNotificationNetwork{    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(reachabilityChanged:) name:kReachabilityChangedNotification object:nil];    Reachability * hostReach = [[Reachability reachabilityWithHostName:@"www.baidu.com"] retain];    [hostReach startNotifier];：}

致謝：http://blog.sina.com.cn/s/blog_91ff71c001016gql.html