IOS - 总结（网络状态变更）

- (void)initNetworkMonitor

{

NSURL *baseURL = [NSURL URLWithString:@"http://www.baidu.com/"];

AFHTTPRequestOperationManager *manager = [[AFHTTPRequestOperationManager alloc] initWithBaseURL:baseURL];

NSOperationQueue *operationQueue = manager.operationQueue;

[[AFNetworkReachabilityManager sharedManager] startMonitoring];

[[AFNetworkReachabilityManager sharedManager] setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {

NSLog(@"Reachability: %@", AFStringFromNetworkReachabilityStatus(status));

static AFNetworkReachabilityStatus lastStatus = 2;

switch (status) {

case AFNetworkReachabilityStatusReachableViaWWAN:

case AFNetworkReachabilityStatusReachableViaWiFi:

[operationQueue setSuspended:NO];

if (lastStatus == -1 || lastStatus == 0) {

[self showAlertTitle:@"提醒：" message:@"当前网络已连接，网络状态良好！"];

}

break;

case AFNetworkReachabilityStatusNotReachable:

default:

[operationQueue setSuspended:YES];

if (lastStatus == 1 || lastStatus == 2) {

[self showAlertTitle:@"提醒：" message:@"当前网络不可用,请请稍后重试！"];

}

break;

}

lastStatus = status;

}];

}