My first problem on X-code

[Hamood]

My first problem on X-code

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I just try to learn objective c I watch video training (LYNDA) it was helpful. I wrote small program (I add text view and one bottom to change the color of text) build is succeed when I run on it simulator it is not working I checked code and interface builder it seems ok.

Another question how to make X-code 3.2 projects work on X code 4.2.

Thanks for your help

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[Josso]

What's the error you are getting?

[Hamood]

build is succeed when i run it the program is start on simulator when i press the bottom the program is quit below error:
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2010-12-28 19:51:32.599 WhatDay[326:207] -[WhatDayViewController displayDay]: unrecognized selector sent to instance 0x4b51880
2010-12-28 19:51:32.602 WhatDay[326:207] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[WhatDayViewController displayDay]: unrecognized selector sent to instance 0x4b51880'
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[musicwind95]

Originally Posted by Hamood

I just try to learn objective c I watch video training (LYNDA) it was helpful.

Is this the one by Simon Allardice? I worked through that once...I don't have it now, but I might still remember bits.

Originally Posted by Hamood

I wrote small program (I add text view and one bottom to change the color of text) build is succeed

Are there any warnings (about missing methods)?

Originally Posted by Hamood

when I run on it simulator it is not working I checked code and interface builder it seems ok.

I believe you make the connections in IB, and don't manually write the target-action code for the button...?

The error message indicates that the button is wired up correctly (the method is being called). However, are you sure the method is there in WhatDayViewController.m? Even if it's a blank method, make sure that you have the method declaration
- (IBAction)displayDay{
// ...Some code
}
in that file. Even if you have a blank method, just make sure it's in there. You can implement it when you resolve the crash.

Originally Posted by Hamood

Another question how to make X-code 3.2 projects work on Xcode 4.2.
Thanks for your help

I'm assuming you mean to change the SDK, not actually use Xcode 4 (which is under NDA)?

Make sure you actually have the 4.2 SDK installed. You should no longer have 3.2. If it doesn't automatically convert, go to Project > Edit Project Settings. In the Build tab, search for Base SDK. Change that to iOS 4.2.

Glad to be of service.

[Hamood]

Thanks a lot you helped me the second for my first still i'm trying to solvet I just copy what I learned from video training ( yes it's by Simon ). I checked Exercise files (coming with video training ) I found the same project which I tray to make it when I checked the code I found only delegate.m file is not the same with my project and on training Simon (trainer) didn't ay any think about it.

Again thanks