Using buttons, located on the same xib, to bring up different views

[lindseyv]

I am new to objective c development and I have searched for the last couple days on how to solve this problem. Essentially, I am trying to create a main menu for my application that contains three buttons that will load different views depending on the button the the user hits. All of the tutorials I have seen only show one button and every time I add the second, my program crashes. Below is the code that I have put together for two buttons

The second button is working correctly and the buttons are being connected the same way. I have even tried adding two view controllers to direct them.

In the main.h

@interface ViewViewController : UIViewController {


IBOutlet SecondViewController *secondViewController;
IBOutlet FourthViewController *fourthViewController;
}

- (IBAction)gotoSecondView;
- (IBAction)gotoFourthView;


In the main .m
- (IBAction)gotoSecondView{
[self presentModalViewController:secondViewController animated:YES];
}

- (IBAction)gotoFourthView{
[self presentModalViewController:fourthViewController animated:YES];
}

Thank you.

[lindseyv]

I want to clarify, the second view is working correctly by itself, the program crashes when I try adding the new button/view.

[Robert Paulson]

Hi,

you may want to try changing your methods to something like this:

- (IBAction)gotoSecondView{
secondViewController = [[SecondViewController alloc] initWithNibName: nil bundle: nil]; 
[self presentModalViewController:secondViewController animated:YES];
[secondViewController release];
}

Hope this helps.

Cheers,
Bob

[mr tickle]

you should be dismissing the current modalviewcontroller

i dont think you can just say present first, now present the other one.

Originally Posted by lindseyv

I want to clarify, the second view is working correctly by itself, the program crashes when I try adding the new button/view.

[lindseyv]

thank you for the advice but it fails... this program is driving me crazy. The new view I am trying to add is now orderview.


- (IBAction)gotoSecondView{
secondViewController = [[SecondViewController alloc] initWithNibName:nil bundle: nil];
[self presentModalViewController:secondViewController animated:YES];
[secondViewController release];
}

- (IBAction)gotoOrderViewV1{
[self presentModalViewController:addWorkOrderControllerV 1 animated:YES];
OrderControllerV1 = [[OrderControllerV1 alloc] initWithNibName:nil bundle:nil];
[OrderControllerV1 release];
}

[Robert Paulson]

What do you mean 'it fails'? The code you posted cannot work:

- (IBAction)gotoOrderViewV1{
[self presentModalViewController:addWorkOrderControllerV 1 animated:YES];
OrderControllerV1 = [[OrderControllerV1 alloc] initWithNibName:nil bundle:nil];
[OrderControllerV1 release];
}

The logic goes like this: Create a new view controller, present it, release it. You try to present it without having created it and your typing is messed up. Are addWorkOrderControllerV1 and OrderControllerV1 supposed to be the same? If yes, you have to use the same name. If not, you have to create addWorkOrderControllerV1 before you can do something with it.

Assuming they are the supposed to be the same, try

- (IBAction)gotoOrderViewV1{
OrderControllerV1 *orderCont= [[OrderControllerV1 alloc] initWithNibName:nil bundle:nil];
[self presentModalViewController: orderCont animated:YES];
[orderCont release];
}

Hope this helps.

Cheers,
Bob

P.S.: If it doesn't help, we need more information about what's actually going wrong. Even though we try real hard, we can't read your mind.

[lindseyv]

they are not the same. the user can chose one of two buttons on the current view, one the buttone will bring up a new view,WorkOrderControllerV1, and the other button will bring up another view, OrderControllerV1.

Sorry I am very new to this and I am trying to understand. As I search the internet it seems that this question has been asked and unanswered many times.

[Robert Paulson]

Okay, for what you want to do, you'll need two separate buttons (obviously) and two separate methods. (Well, not necessarily, but let's keep it simple.)

Use Interface Builder to create both buttons and then implement the following two methods in your .m file:

- (IBAction)gotoOrderViewV1{
OrderControllerV1 *orderCont= [[OrderControllerV1 alloc] initWithNibName:nil bundle:nil];
[self presentModalViewController: orderCont animated:YES];
[orderCont release];
}

- (IBAction)gotoOrderViewV1{
WorkOrderControllerV1 *workOrderCont= [[WorkOrderControllerV1 alloc] initWithNibName:nil bundle:nil];
[self presentModalViewController: workOrderCont animated:YES];
[workOrderCont release];
}

This, of course, assumes that you have actually created OrderControllerV1 and WorkOrderControllerV1 with its corresponding NIB files. Now you only need to connect the buttons with the IBActions (in Interface Builder).

Hope this helps.

Cheers,
Bob

[lindseyv]

Thanks for the help. Yet again the first button works and the second fails.

[Robert Paulson]

Yet again, what does "fails" mean? You need to be more specific.

Cheers,
Bob

[lindseyv]

The second button will not load correctly. It have tried writing this about 10 different ways and the best I have gotten it is that the second button will only go load to the mainmenu.xib.