IsEqualToString每次都失敗

Question

我知道這不是最安全的方式，但它只是一個初學者應用程序，所以我使用ifEqualToString，它只是去else語句。請幫忙。我甚至複製並粘貼了密碼，但仍然不正確。

這裏是我的 ViewController.H

#import "ViewController.h" 

@interface ViewController() 

@end 

@implementation ViewController 

- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 
    // Do any additional setup after loading the view, typically from a nib. 
} 

- (void)didReceiveMemoryWarning 
{ 
    [super didReceiveMemoryWarning]; 
    // Dispose of any resources that can be recreated. 
} 

- (IBAction)enterPassword:(id)sender { 
    NSLog(@"testOne"); 
    NSString *passwordString = [NSString stringWithFormat:@"1234"]; 

    if ([passwordField.text isEqualToString: passwordString]) { 
     // Password is correct 
     NSLog(@"Password Correct"); 
     UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Correct Password" message:@"This password is correct." delegate:self cancelButtonTitle:@"Dismiss" otherButtonTitles:nil]; 
     [alert show]; 

    } 
    else { 
     // Password is incorrect 
     UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Incorrect Password" message:@"This password is incorrect." delegate:self cancelButtonTitle:@"try Again" otherButtonTitles:nil]; 
     [alert show]; 
     NSLog(@"password Incorrect"); 
    } 
} 
@end 

再次感謝！

Answer 1

可能您還沒有在界面構建器中鏈接您的passwordField。