9

大家，我目前正在为一个新应用开发登录和密码界面，我想有条件地执行一个segue，只有当密码和登录都可以时。我在 Storyboard 中创建了一个带有“push”样式和“loginMainIdentifier”的 Segue。实现文件夹编写如下：

    - (IBAction)pushValidateButton:(id)sender {

    if([loginText.text isEqualToString:@""] || [passwordText.text isEqualToString:@""] )
    {
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Identification" message:@"Veuillez completer l'ensemble des cases SVP" delegate:self cancelButtonTitle:@"Revenir" otherButtonTitles:nil];
        alert.alertViewStyle = UIAlertViewStyleDefault;
        [alert show];
    }

    if(![loginText.text isEqualToString:@""] && ![passwordText.text isEqualToString:@""])
    {
    //creation of the request
        NSMutableString *string = [[NSMutableString alloc] initWithCapacity:100];
        NSString *string01 = @"http://89.82.227.112/Vico/login.php?l=&m="; 


        [string appendFormat:string01];
        NSString *string02 = loginText.text;
        NSString *string03 = passwordText.text;

        [string insertString:string03 atIndex:41];
        [string insertString:string02 atIndex:38];

        NSURLRequest *request01=[NSURLRequest requestWithURL:[NSURL URLWithString:string]cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:60.0];

    //create the connection and start loading data

        NSURLConnection *connection01 = [[NSURLConnection alloc] initWithRequest:request01 delegate:self];
        if(connection01)
        {
        //Create NSMutableData to receive data
        //receiveddata is an instance declared elsewhere
        receivedData = [NSMutableData data];
        }
    }
    [self performSegueWithIdentifier:@"loginMainSegue" sender:self];
}

[self performSegueWithIdentifier:@"loginMainSegue" sender:self]我不明白为什么它在代码末尾不起作用。

是否有人知道缺少什么以便仅在填写登录名和文本时才执行segue。

谢谢

胜利者

4

1 回答 1

5

检查名称是否拼写正确（您写在顶部loginMainIdentifier，然后loginMainSegue在代码中）。

还要检查这个 segue 是否从整个viewController 连接到，当然，目标 viewController。

于 2012-05-03T12:39:27.940 回答