10

我已经搜索过，但没有找到像我这样的问题。我确定这是我看过的东西。

我正在使用 tony Million 的可达性块方法。当我有互联网然后没有互联网时，它运行良好。警报出现并且工作正常。

但是，当我没有互联网然后我上网时，会弹出相同的警报

我的代码是

-(void)reachabilityBlock
{
// allocate a reachability object
Reachability * reach = [Reachability reachabilityWithHostname:@"www.google.com"];

// tell the reachability that we DONT want to be reachable on 3G/EDGE/CDMA
reach.reachableOnWWAN = YES;


reach.reachableBlock = ^(Reachability * reachability)
{
    dispatch_async(dispatch_get_main_queue(), ^{
        //NSLog(@"REACHABLE! block");
        [self newsTableViewRefresher];
    });
};

reach.unreachableBlock = ^(Reachability * reachability)
{

        dispatch_async(dispatch_get_main_queue(), ^{
            //NSLog(@"UNREACHABLE! block");

            UIAlertView *alert = [[UIAlertView alloc] initWithTitle: @"No Network found!"
                                                            message: @"You have no wifi or cellular connection available. Please connect to a WIFI or cellular network."
                                                           delegate: self
                                                  cancelButtonTitle:@"OK"
                                                  otherButtonTitles:nil];

            [alert show];


        });

};


[reach startNotifier];
[self.refreshControl endRefreshing];

 }

我的问题是为什么当我上网时会弹出无法访问的警报？

感谢您的时间

4

1 回答 1

2

这就是我最终所做的，并为我完成了工作。我尝试使用这些块，但似乎解决我的问题更麻烦。希望这可以帮助。

Reachability *reach = [Reachability reachabilityWithHostname:@"www.jportdev.com"];
if ([reach isReachable]){
    // Reachable
    //NSLog(@"is reachable.......");
}else{
    // not Reachable
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Network is unavaliable!" message:@"Some content in this application might not be avaliable without network connectivity." delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
    [alert show];
    alert = nil;
}
于 2013-11-01T01:58:21.810 回答