I have a UIScrollView that will display three images when the app launches for the first time.
Here's my issue: I'm seeing if it's the first launch from my AppDelegate, taking the user to a UIScrollView (not embedded in the NavigationController) and then to the initial view controller that would normally appear if it's not a first time launch.
What I would like is for the user to swipe through these three slides and then be taken to the root view controller. What's the best way to do this?
Problems i'm facing:
When I detect that it's a first time launch, I'm setting the UIScrollView as the root and going there, and then, after they've swiped through the brief tutorial, i'm segueing into my initial view controller. Problem is that my UIScrollView isn't embedded in the navigation controller which cause a problem and doesn't display the navigation bar on the main view controller. I don't see a reason to embed it into the navigation controller because it will be displayed just once.
Any help would be so immensely appreciated!
The storyboard not connected to the navigation stack is the tutorial UIScrollView that gets set as the root if it's a first time launch.
Make the navigation controller your app's root view controller.
Make the tutorial a presented view controller. Present it once when it's needed initially; when the user is done, dismiss it; and never present it again.
Related
So, I have a tab bar view controller, however at some point I need to manually segue to a viewcontroller that is not attached to the tab-view controller. The segue works, but then it jumps back again to the previous view controller randomly after 1/2 a second to 3 seconds, not all the time, but often. Occasionally I see a message saying something along the lines of "cannot dismiss viewcontroller while another dismiss or presentation is already taking place" but I've double checked all my code and there are only three places that make the jump, none of which can be called simultaneously. What I need to know then, is how I go about dismissing the tab viewcontroller in the view did load method of the modaled to controller. Swift explanations are no good to me thanks. Also, not related to this question persay, but can anyone tell me what the sliding bar thing that looks like a UISlider and tracks the progress of a song is called?
i have implemented a tabbarcontroller with 5 tabs each connected to a view.
the tabBarcontroller is created and default view allocation happens in another view.
everythine looks fine but i have a bug.
each view in the tab have buttons that trigger other views. these views don't have tabs so to get back to a tab view i use a back button.
when i press the back button i don't want the view ( with the tab ) to be created from scratch. so i have put the relevant code in viewdidload rather than viewwillappear.
( this choice is because this view downloads data from server and it becomes time consuming to put the code at this point in viewwillappear )
However if i am returning from current tab to a tab that i had previously touched and viewed. I want view to be loaded from scratch because data should be downloaded again at this point. but since i am using viewdidload rather than viewwillappear the old view is not refreshed.
how can i achieve this conditional refreshing of view depending upon whether i am coming from another tab or a from a view with back button
One way to do this is the isMovingToParentViewController method in your view controller. This will enable you to detect if your current stack has been popped from navigation controller.
There's an answer here that explains how to use it, and links to Apple's documentation.
As you can see from that thread, you can also use NSNotificationCenter to do this.
I am writing an iPhone application using the storyboards for an initial mockup. The problem I have right now is switching view controllers.
I have a table view controller and another view controller. All I want to do is use a back button to go back to the original screen, and I can do that, except the data disappears. The storyboard that I have is shown below.
I have the Back button going back to the original navigation controller. I have also had it going back to the Card view controller.
I have hard coded some example cells to just see how things look and they show up just fine when I run the simulation. When I click the back button though, it goes back to the All Cards screen and the cells that were there are now gone.
If I need to post some code just ask for what part would be helpful, I have done all of this through storyboards though.
I'm sure it's something stupid I've done, any point in the right direction would be greatly appreciated.
Basically: you pushed where you should have popped.
What you are seeing on the Storyboard does not exist yet. By segue-waying during runtime to a view controller it gets instantiated.
When you segue-wayed during runtime from the Add Card view controller "back" to the Card View Controller - here is what happened: instead of popping the navigation stack all the way back to the Card View Controller you already had, you just instantiated a new Card View Controller and pushed it onto the navigation stack. You could verify that by going all the way back to the original Card View Controller by tapping the back button several times.
What you could do to accomplish your task is this:
Instead of using the Storyboard for your back button use an IBAction in code:
- (IBAction)popToRoot:(id)sender {
[self.navigationController popToRootViewControllerAnimated:YES];
}
What I'm trying to do
If started creating my App. I've got a NavigationController as my rootViewController. When the app is started it will open my LoginViewController. In there I do the Login-Procedure, if everything is fine. I'll start my ECSlidingViewController. Which has a Menu (UITableView) and a MainView (UITableView).
Until here everything is working fine. I can swipe and it show's my menu. Now the problem is starting. When I press a menu-item it perfectly starts my new ViewController and show's the content. But there it still show's the same NavigationBar - like in the ECSlidingViewController. So I got no possibility to tell the user what he is looking at, also I need to show him sometimes new options in the NavigationBar.
Question
How can I fix this problem? I'd always like to show the NavigationBar of the specific ViewController I'm actually using. If you guy's have some Codesnippets or a good Idea how to handle this problem. Please leave a comment bellow.
If you need codesnippets or something else, tell me I'll upload it! Thank you in advance!
Code
This is how I start my ECSlidingMenu:
[self performSegueWithIdentifier:#"loginPush" sender:self.view];
This is how I'll start a new ViewController:
UIViewController *newTopViewController = [self.storyboard instantiateViewControllerWithIdentifier:identifier];
Pictures*
You want to change your structure so that the ECSlidingViewViewController is the root view controller. This can either be from the start of the app or you can switch the root after login. The top view controller of the sliding controller should then be a navigation controller and you should set the root and push other view controllers into that navigation controller.
What you currently have breaks the link between the view controllers and the navigation controller because only the sliding view controller is pushed into the stack and its title (nothing about its navigationItem ever changes).
Probably the easiest solution would be to change the initial view controller in the storyboard (to the sliding view controller). In this case the login view would be presented as the root view of the navigation controller (which would be the top view). Then, after login you push the next view controller and then (after the animation completes) remove the login view controller from the nav stack.
I have a UINavigationController on some tab of a UITabBar. When I drill down into the navigation controllers tableViews, move it into the more-tab, and then select the entry in the tableview in the more-list, i get the viewController that was visible at the time i left the tab i moved. Clicking on the back-button gets me back to the more-list, with no possibility to get back to the initial root view controller.
It would be perfectly okay for me to have the root view controller appear when i click on the item in the more-list, but i have no idea how to get notified when my viewcontroller is moved, since i am developing a library, and so have no reference to the TabBarController.
One of the ways is to implement tabBarController:willEndCustomizingViewControllers:changed: method in UITabBarViewController delegate. And watch for it. If such thing happend then reset you viewController and navigationViewController. This remove your UINavigationController stack, but application will work correctly.