textfield文本内容比较无法正常工作 [英] textfield text content comparision wont work

问题描述

我有这段代码:

    if (email.text == emailComfirm.text) {
        UIAlertView *emailAllertView = [[UIAlertView alloc] initWithTitle:@"Succes" message:@"Yaaay, je kan nu gebuik gaan maken van Vogelspotter." delegate:self cancelButtonTitle:@"Direct aanmelden" otherButtonTitles: nil];
        [emailAllertView show];
        // Doing some other code here
        [self dismissModalViewControllerAnimated:YES];
    }else{
        NSLog(@"email: %@", email.text);
        NSLog(@"email: %@", emailComfirm.text);

        UIAlertView *emailAllertView = [[UIAlertView alloc] initWithTitle:@"Foutmelding" message:@"De opgegeven email adressen komen niet met alkaar overeen" delegate:self cancelButtonTitle:@"Probeer het nog eens" otherButtonTitles: nil];
        [emailAllertView show];
    }

不知何故，如果我输入ee/ee或ee/ff，则我不会在文本字段中键入"moather wath"，该语句始终转到其他语句.有人可以告诉我我在做什么错吗?

somehow, no moather wath i type in the textfiels, the is statment always goes to the else, if i enter ee/ee or ee/ff. Can someone tell me what i'm doing wrong?

tnx.

推荐答案

您要使用[email.text isEqualToString:emailComfirm.text]比较2个NSString *对象的内容.使用==将比较两个对象的地址，而不是对象的内容.这就是指针的工作方式如何在C中使用指针?

You want to use [email.text isEqualToString:emailComfirm.text] to compare the contents of 2 NSString* objects. using == will compare the addresses of the 2 objects, not the contents of the objects. This is how pointers work How do pointer to pointers work in C?

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