我不能执行segue

下面是我的代码，我想根据响应字符串执行segue，但不能，有人可以注意我的代码并告诉我什么是错的。我不能执行segue

当我在联系号码输入值时。文本框，应用程序被终止与错误：

Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Can't do regex matching on object <UITextField: 0x7faae2079980; frame = (20 353; 280 45); text = ''; clipsToBounds = YES; opaque = NO; autoresize = W+TM+BM; gestureRecognizers = <NSArray: 0x7faae2097250>; layer = <CALayer: 0x7faae2083bd0>>.'

代码，我尝试：

- (IBAction)Register:(id)sender { 

if ((uname.text.length==0)&&(uemail.text.length==0)&&(ucontact.text.length==0)&&(upwd.text.length==0)&&(confirmpwd.text.length==0)){ 

    UIAlertView *alert=[[UIAlertView alloc] initWithTitle:@"Can not Register" 
                message:@"All the Fields are Mandatory" 
               delegate:nil 
             cancelButtonTitle:@"OK" 
             otherButtonTitles:@"Cancel", nil]; 
    [alert show]; 

} 
else{ 


    NSString *emailString = uemail.text;// storing the entered email in a string. 
    //Regular expression to checl the email format. 
    NSString *emailReg = @"[A-Z0-9a-z._%+-][email protected][A-Za-z0-9.-]+\\.[A-Za-z]{2,4}"; 

    NSPredicate *emailTest=[NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailReg]; 


    if(([emailTest evaluateWithObject:emailString]!=YES)||[emailString isEqualToString:@""]) 
    { 
     UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Warning" message:@"Enter your email in [email protected] format." delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil]; 
     [alert show]; 

     uemail.text = @""; 
     return; 
    } 
} 
    NSString *mobile=ucontact.text; 
    NSString *numberRegEx = @"([0-9]{10})"; 
    NSPredicate *numberTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", numberRegEx]; 
    if ([numberTest evaluateWithObject:ucontact] != YES||[mobile isEqualToString:@""]) 
    { 

     UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Warning" message:@"Enter a Valid Number." delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil]; 
     [alert show]; 

     uemail.text = @""; 
     return; 


} 
if ((upwd.text)!=(confirmpwd.text)) { 

    UIAlertView *alert=[[UIAlertView alloc] initWithTitle:@"Password Do Not Match" 
                message:nil 
               delegate:nil 
             cancelButtonTitle:@"OK" 
             otherButtonTitles:@"Cancel", nil]; 
    [alert show];} 


NSURL *url = [NSURL URLWithString:@"http://108.179.246.128/connectme/service/registration.php"]; 
NSMutableURLRequest *rq = [NSMutableURLRequest requestWithURL:url]; 
[rq setHTTPMethod:@"POST"]; 
NSString *params=[NSString stringWithFormat:@"name=%@&email=%@&mobile=%@&passwrd=%@",self->uname.text,self->uemail.text,self->ucontact.text,self->upwd.text]; 
NSData *postData = [params dataUsingEncoding:NSASCIIStringEncoding]; 
[rq setHTTPBody:postData]; 

NSURLResponse *response; 
NSError *error; 
NSData *urlData = [NSURLConnection sendSynchronousRequest:rq returningResponse:&response error:&error]; 
NSString *str=[[NSString alloc]initWithData:urlData encoding:NSUTF8StringEncoding]; NSLog(@"Login response:%@",str); //getting response 

    // [self performSegueWithIdentifier:@"activity" sender:self]; 

    if([str isEqual: @"Successfully Registered"]) 
    { 

     [self performSegueWithIdentifier:@"login" sender:self]; 
    } 

    else if([str isEqual:@"Sorry Email address already taken"]) 
    { 

     UIAlertView *alertit=[[UIAlertView alloc] initWithTitle:@"Can not Register" 
                message:@"Email Address already Taken" 
                delegate:nil 
              cancelButtonTitle:@"OK" 
              otherButtonTitles:@"Cancel", nil]; 
     [alertit show]; 
    } 
    }

来源

2016-09-19 Shikha Sharma

ucontact被textfiled，你可以对evalute谓词..使用'mobile'或'ucontact.text' –

对于崩溃你的第二个问题，那是因为你需要通过textField.text不是UITextField对象。所以它应该是mobile包含textField文本的变量，而不是ucontact textField对象。

[numberTest evaluateWithObject:mobile]

来源

2016-09-19 06:28:18

由于一吨，它的工作:) –

欢迎您SEGUE你需要给更多的信息，加NSLog你添加了'[self performSegueWithIdentifier：@“login”sender：self];'并检查它是否正在执行。 –

它没有执行，但为什么？ –

我不能执行segue

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