Question

我写的脚本中有错误，错误是：

控制到达非空函数的结尾

这是我的代码：

-(BOOL) hasInternet {
    Reachability *reach = [Reachability reachabilityWithHostName:@"www.google.co.uk"];
    NetworkStatus internetStats = [reach currentReachabilityStatus];

    if (internetStats == NotReachable){
        UIAlertView *alertOne = [[UIAlertView alloc] initWithTitle:@"Internet" message:@"is DOWN" delegate:self cancelButtonTitle:@"Turn on your Internet" otherButtonTitles:@"Cancel",nil];
        [alertOne show];
    }
}

谁能看到我哪里出错？

Answer 1

您的方法旨在使用return语句返回布尔值，例如return YES;。

由于您尚未实现此类操作，因此该方法无法成功编译。如果要返回BOOL，可以添加return语句。如果您不想返回BOOL，只需更改方法初始化：

    -(void) hasInternet {

       Reachability *reach = [Reachability reachabilityWithHostName:@"www.google.co.uk"];
       NetworkStatus internetStats = [reach currentReachabilityStatus];

      if (internetStats == NotReachable){
         UIAlertView *alertOne = [[UIAlertView alloc] initWithTitle:@"Internet" message:@"is DOWN" delegate:self cancelButtonTitle:@"Turn on your Internet" otherButtonTitles:@"Cancel",nil];
         [alertOne show];
      }

    }

Xcode编译错误“控件到达非void函数结束”

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