检查密码字段和验证密码字段是否不相等？

Question

我正在开发的应用程序上有一份注册表。您输入您的电子邮件，然后输入您想要的密码和验证密码。它需要检查两个密码字段passwordFieldOne和passwordFieldTwo是否不相等。他们需要检查它们是否不相等，以便我的错误过程正常工作。这是我尝试过的一些事情。

    if(passwordFieldOne != passwordFieldTwo){
        //do whatever
    }

-

    if(passwordFieldOne.text != passwordFieldTwo.text){
        //do whatever
    }

-

    if((passwordFieldOne.text == passwordFieldTwo.text) == False){
        //do whatever
    }

PS。请不要回复告诉我我可以只检查它们是否相等，或者检查它们是否相等然后说其他。感谢您的帮助。

Answer 1

-(BOOL)isPasswordMatch:(NSString *)pwd withConfirmPwd:(NSString *)cnfPwd {
//asume pwd and cnfPwd has not whitespace
    if([pwd length]>0 && [cnfPwd length]>0){
        if([pwd isEqualToString:cnfPwd]){
           NSLog(@"Hurray! Password matches ");
           return TRUE;
        }else{
           NSLog(@"Oops! Password does not matches");
           return FALSE;
        }
    }else{
         NSLog(@"Password field can not be empty ");
         return FALSE;
    }
return FALSE;
}

Answer 2

使用 isEqualToString: 方法比较字符串：

if([passwordFieldOne.text isEqualToString:passwordFieldTwo.text]) {
    // passwords are equal
}

Answer 3

下面是比较 _passwordText 和 _confirmPasswordText 的代码

  if ([_passwordText.text isEqual:_confirmPasswordText.text])
        {
            NSLog(@"Password =%@   , ConfirmPassword = %@ is equal ",_passwordText.text,_confirmPasswordText.text);
        }
        else {
            UIAlertController *alertConnection= [UIAlertController
                                                 alertControllerWithTitle:@""
                                                 message:@"Password do not match! "
                                                 preferredStyle:UIAlertControllerStyleAlert];
            UIAlertAction* okBtnConnection= [UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault
                                                                   handler:^(UIAlertAction * action){
                                                                       [self.view endEditing:YES];
                                                                   }
                                             ];
            [alertConnection addAction:okBtnConnection];
            [[UIView appearanceWhenContainedIn:[UIAlertController class], nil] setTintColor:[UIColor redColor]];
            [self presentViewController:alertConnection animated:YES completion:nil];