大家好,我正在为一个新应用程序开发登录和密码界面,我想有条件地执行一个segue,仅当密码和登录正确时。我在Storyboard中创建了一个Segue,使用“push”样式和“loginMainIdentifier”。实现文件夹的代码如下:
- (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];
}
我不理解为什么代码结尾加上
[self performSegueWithIdentifier:@"loginMainSegue" sender:self]
,却无法运行。
有人知道如何在登录和文本都填写的情况下才执行segue吗?
谢谢
Victor