Xcode: If Statements with textbox

Question

So im having problems do this. This code wont work the way i want it to.

if (answer.text == @"text") {
    UIAlertView  *alert = [[UIAlertView alloc] initWithTitle:@"title" message:@"message" delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil];
    [alert show];
    [alert release];
}else{
    UIAlertView  *alert1 = [[UIAlertView alloc] initWithTitle:@"title 2" message:@"Title 2" delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil];
    [alert1 show];
    [alert1 release];
}

My problem is the textbox 'answer' has the text 'text' in it, it wont do the first UIAlertView. It always does the one in the else{}. This code is also in an IBAction for a button. Any help now is good.

try comparing strings like this: `[answer.text isEqualToString:@"text"]` Also make sure you have outlets correctly connected (`answer` is `IBOutlet`). — Eimantas, Aug 14 '11 at 05:06

score 4 · Accepted Answer · answered Aug 14 '11 at 05:06

4

The == operator only compares pointers, so two identical instances of NSString won't compare equal. Use a comparison method instead:

if ([answer.text isEqualToString:@"text"]) ...

answered Aug 14 '11 at 05:06

Marcelo Cantos

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score 0 · Answer 2 · answered Aug 14 '11 at 05:08

0

if ([text isEqualToString:@"text"]) {

One good note:

In a lot of languages it usually isn't a good idea to use == to compare stings. I always look for a compare string function or method. I would advise you do, unless the language manuals say otherwise.

answered Aug 14 '11 at 05:08

Dair

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That's because in a lot of languages variables are just pointers. == is generally pointer comparison. – Manish Burman Aug 14 '11 at 05:16

Xcode: If Statements with textbox

2 Answers2