互聯網問題

Question

如何通過iphone或objective-c檢查互聯網連接？

Answer 1

Quick and Drity：Ping Google？

Answer 2

Apple的建議是做類似的信息（或使用）Reachability

Answer 3

看一看蘋果的示例代碼可達性。它應該爲你提供你需要的一切。

Answer 4

下面的代碼片段，您可以使用：

[[Reachability sharedReachability] setHostName:@"example.com"]; 
if ([[Reachability sharedReachability] remoteHostStatus] == NotReachable) { 
    UIAlertView *dialog = [[[UIAlertView alloc] init] retain]; 
    [dialog setTitle:@"Server unreachable"]; 
    [dialog setMessage:@"The server is temporarily unavailable."]; 
    [dialog addButtonWithTitle:@"OK"]; 
    [dialog show]; 
    [dialog release]; 
}