大家好, 我目前正在为一个新应用程序开发登录名和密码界面,我想有条件地执行 segue,只有当密码和登录名都正确时。我在 Storyboard 中创建了一个带有“push”风格和“loginMainIdentifier”的 Segue。实现文件夹写法如下:
- (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];
}
我不明白为什么它不适用于代码末尾的 [self performSegueWithIdentifier:@"loginMainSegue"sender:self]
。
是否有人知道缺少什么以便仅在登录和文本已填写时执行 segue。
谢谢
维克多
最佳答案
检查名称是否拼写正确(您在顶部写了 loginMainIdentifier,然后在代码中写了 loginMainSegue)。
还要检查此 segue 是否从整个 viewController 连接到目标 viewController。
关于iphone - 以编程方式执行 Storyboard Segue,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/10431408/