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copied!<p>Yes, you need to release them, but you need them just a little longer than beyond the end of your function.</p> <p>The solution is called <code>autorelease</code>. Just replace <code>release</code> with <code>autorelease</code> and the objects stay around until the program gets back to the runloop.</p> <p>When the program gets back there, everybody interested in one of the objects should have sent a <code>retain</code> message to it, so the object will not be deallocated when released by the <code>NSAutoreleasePool</code>.</p> <p><strong>edit</strong> actually, looking at your code, there's a lot more wrong with it. E.g. this:</p> <pre><code>UIButton *placeHolderButton = [[UIButton alloc] init]; placeHolderButton = sender; </code></pre> <p>doesn't make sense. First you allocate an object, then assign (a pointer to) it to variable <code>placeHolderButton</code>. That's fine.</p> <p>Then you assign <code>sender</code> to that same variable. The reference to the object you just created is now lost.</p> <p>Not sure if I get what you want, but this would be better:</p> <pre><code>-(IBAction)inputNumbersFromButtons:(id)sender { UIButton *placeHolderButton = sender; // this is still a little useless, but ok int i = placeHolderButton.tag; NSString *addThisNumber = [NSString stringWithFormat:@"%i", i]; NSString *placeHolderString = firstValue.text; NSString *newLabelText = [placeHolderString stringByAppendingString:addThisNumber]; [firstValue setText:newLabelText]; } </code></pre> <p>No allocs, so no releases necessary. The strings returned by those functions are already added to the autoreleasepool, so they will be deallocated automatically (if needed).</p>

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