How to get the view of two controllers to load at the same time

[martins]

Hi,

I´ve followed the instuction in the Rubymotion book and created an app that has a search and a list function.

The first screen is a search form. I´d love to put my list below that form, but I don´t understand how.

If I position the elements in non overlapping places in each controller, how to I load them both at once? Would that be the correct approach?

Here´s how I´ve set things up today:

class AppDelegate
  def application(application, didFinishLaunchingWithOptions:launchOptions)
    @window = UIWindow.alloc.initWithFrame(UIScreen.mainScreen.bounds)
 
    @search_controller = SearchController.alloc.initWithNibName(nil, bundle:nil)
    @venue_controller  = VenueController.alloc.initWithNibName(nil, bundle:nil)
    @navigation_controller = UINavigationController.alloc.initWithRootViewController( @search_controller )
 
    @window.rootViewController = @navigation_controller
    @window.makeKeyAndVisible
    true
  end
end

The search_controller can be found in this gist and the venue_controller can be found in this.

Best regards,

Martin Stabenfeldt

[Austin Seraphin]

A view controller can only have one view, and you can access this through the view method. Remember that views have subviews, and all of these descend from UIView. So you want to make your search form and list two separate UIView objects. Then in the controller's code just use self.view.addSubview(@search_view) and self.view.addSubview(@list_view)

And then you can just assign that as the root view controller of the navigation controller. This part took me a while to get my head around. Geomotion helped. 

 - Austin

Pay no attention to that man behind the curtain! http://behindthecurtain.us

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[Martin Stabenfeldt]

Hi,

On Mon, Apr 29, 2013 at 01:12:20AM -0400 or thereabouts, Austin Seraphin wrote:
> A view controller can only have one view, and you can access this through the view method. Remember that views have subviews, and all of these descend from UIView. So you want to make your search form and list two separate UIView objects. Then in the controller's code just use self.view.addSubview(@search_view) and self.view.addSubview(@list_view)
>
> And then you can just assign that as the root view controller of the navigation controller. This part took me a while to get my head around. Geomotion helped.

Thanks for the suggestion Austin! :)
I´m not exactly sure how to implement it. Thought it would be smart to have a FrontpageController which can load the SearchController that should be positioned on the top, and the VenueController that´s supposted to be below.
As you might have guessed, that did not work. I´d like to keep the what I have in the VenueController separated from what´s in the SearchController, if that´s possible. It would be fantastic if you could give me an example, I´m a bit lost right now. :-|

>>> class AppDelegate
>>> def application(application, didFinishLaunchingWithOptions:launchOptions)
>>> @window = UIWindow.alloc.initWithFrame(UIScreen.mainScreen.bounds)
>>>

>>> @frontpage_controller = FrontpageController.alloc.initWithNibName(nil, bundle:nil)
>>> @navigation_controller = UINavigationController.alloc.initWithRootViewController( @frontpage_controller )

>>>
>>> @window.rootViewController = @navigation_controller
>>> @window.makeKeyAndVisible
>>> true
>>> end
>>> end

>>> class FrontpageController < UIViewController
>>> def viewDidLoad
>>> super
>>> self.title = "Frontpage"

>>>
>>> @search_controller = SearchController.alloc.initWithNibName(nil, bundle:nil)
>>> @venue_controller = VenueController.alloc.initWithNibName(nil, bundle:nil)
>>>

>>> # This does not work:
>>> self.view.addSubview(@search_controller)
>>> self.view.addSubview(@venue_controller)
>>> end
>>> end

[Colin T.A. Gray]

The tricky thing here is that to really do this properly, you should create a container controller, and add your two controllers to that one (using the viewControllers property of UIViewController).

This is no easy task, and the documentation on it is sparse. I've had mixed success :-/


@colinta
colinta.com
github.com/colinta