CODEWITHSUNDEEP
iphoneobjective-ccocoa-touchuialertview
Andrew
Andrew

Reputation: 16051

Referring to an NSString in output of UIAlertView?

I have an NSString, testString which is set to a value in my app. Then as a response to a button press in UIAlertView I have the following code:

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
    if (buttonIndex == 0) {
        NSLog(@"String: %@", testString);
    }
}

But for sme reason, this always causes the app to crash. I can't seem to figure out why.

Upvotes: 0

Views: 274

Answers (1)

Nava Carmon
Nava Carmon

Reputation: 4533

Probably you create your string with one of convenience methods and don't retain it, so when it comes to alert's clickedButtonAtIndex it's already autoreleased. You should define it as 

@property (nonatomic, retain) NSString *testString;

In implementation:

@synthesize testString;

On creating:

self.testString = [NSString stringWithFormat:@"%@", @"My test string"];

and [testString release]; on dealloc.

Then when you use it in clickedButtonAtIndex you can be sure your testString has a right value

Upvotes: 3

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