iphone - 如果手机未连接到互联网，请加载不同的 Nib

Question

我使用 Apple 的 Reachability 类，它使用警报告诉用户连接不可用或连接丢失，它工作正常。但是，我想将警报更改为更直观的东西。我想加载一个 Nib ，告诉用户没有事件连接，但 Nib 没有加载。我也尝试加载我的其他 Nib ，但它也没有加载 Nib 。

- (BOOL) checkNetworkStatus:(NSNotification *)notice
{
// called after network status changes

NetworkStatus internetStatus = [internetReachable currentReachabilityStatus];
switch (internetStatus)

{
    case NotReachable:
    {
        NSLog(@"The internet is down.");
        UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"No Internet Connection" message:@"You are currently not connected to a WI-FI or cellular Data.\nPlease make sure you are connected." delegate:self cancelButtonTitle:@"Ok" otherButtonTitles:nil, nil];
        [alert show];
        [alert release];

        //NoConnection *noConn = [[NoConnection alloc] initWithNibName:@"NoConnecton" bundle:nil];
        //[self presentModalViewController:noConn animated:NO];
        //[NoConnection release];

        self.isConnected = NO;
        return NO;
        break;

    }
    //more cases.........

警报部分工作得很好，但加载 Nib 的部分却不行。你能告诉我这里有什么问题吗？我在 viewWillAppear 中调用了这个函数。谢谢!

Answer 1

您可以执行以下操作:

if ( ! isConnected )
{
    NoConnection *noConn = [[NoConnection alloc] initWithNibName:@"NoConnecton" bundle:nil];
    [self presentModalViewController:noConn animated:NO];
    [NoConnection release];
}