iPhone应用程序的Internet连接不可用消息 [英] Internet connection unavailable message for iPhone app

问题描述

我有一个应用程序需要在首次启动时从服务器加载其数据，我想添加一条消息，以便在互联网连接未激活的情况下提醒用户，因为它现在已经完成，当没有连接时崩溃。谢谢。

I have an application that needs to load its data from the server when it first launch, i want to add a message that alert user in case the internet connection is not active as it is done right now it crashes when there's no connection. Thank you.

推荐答案

如果它与失败的互联网连接有关，你可以使用NSURLConnectionDataDelegate方法之一：

If its related to failing internet connection you can use one of the NSURLConnectionDataDelegate methods:

-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{

UIAlertView*aview=[[UIAlertView alloc]initWithTitle:@"Connection Failed" message:@"Please check your internet connection" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil ];
[aview show];
[aview release]; // Notify the user about the failure.

NSLog(@"Reason:%@",[error description]);
}

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