I was trying to implement an overlaying button over UITableView in my UIView.
That's what I did:
Created button in Storyboard
Ordered elements:
In my viewWillAppear added:
[self.navigationController.view addSubview:self.myBtn];
It seems enough to display it correctly, but when I perform segue forth the next view I still see this button. That's why I added this in segue:
if ([[segue identifier] isEqualToString:#"addEvent"]) {
[self.myBtn removeFromSuperview];
}
Now it disappears on the next screen, but if I tap back on it, this button won't appear on my previous view. What's wrong?
If you know other ways to implement floating foursquare-like button, I'm opened to it. The simple way described here isn't working: UITableView overlays the button.
Button is placed below the table view. All that you need is swap table view and button in storyboard.
[self.navigationController.view addSubview:self.myBtn];
A navigation controller's view is probably regenerated each time the navigation stack changes. That would cause the button that you added to the nav controller's view to disappear.
In general, you should avoid messing with another view controller's view hierarchy. If you want to add a button over your table, that's fine, but do it in the context of your own view controller's view hierarchy.
Related
Im trying to create a loading view controller before it loads my tableView. This works fine.
However when the tableView is displayed I get a back button. When clicked it takes me back to the loading view. Im guessing this is because its embedded inside of the navigation controller. Please advise.
if you want to hide the back button just add
self.navigationController.navigationBarHidden=YES;
in the third View controller's viewDidLoad
else add
self.navigationItem.hidesBackButton=YES;
You have different options to choose from, depending on your needs:
The loading view can push the navigation controller.
You could avoid using a full view controller to do your loading, and instead just set a view above the rest of your "offers view controller".
Or, refers to Raon answers if you just want the button to disappear
The navigation controller will keep all the controllers that you pushed in a navigation stack.
So if you push ladingviewcontroller using navigation controller and then pushing tableview controller the navigation stack will contain both the controllers and thats why on pressing back button, you are navigated to loadingViewController.
What I suggest is to remove loadingviewcontroller and show loading view in your tableviewcontroller before loading the tableview. Like, in viewWillAppear of tableviewcontroller, just add a UIView with loading indicator and add it as a subview of tableviewcontroller and remove it after you are ready to show your tableview.
Well, if you just want to hide the back nav bar button, you can do this
[self.navigationController.navigationItem setHidesBackButton:YES animated:YES];
But the better way to show the loading controller's view would be this,
[self.view addSubview:loadingController.view];
[loadingController willMoveToParentViewController:self];
[self addChildViewController:loadingController];
[loadingController didMoveToParentViewController:self];
just hide it or remove it from superView when loading view is not required. You can even animate it while hiding so that it gives a nicer effect.
Here we have a architecture issue, the best way is the following:
Make the 2 and 3 view a single one. I mean you must add the ActivityIndicator at the center of the view that contains the table view.
Make the table view hidden and startAnimating the UIActivityIndicatorView.
Do all your loading stuff.
When you finish loading, stopAnimating your UIActivityIndicatorView and make the table view visible again.
And that's it ;)
Do not push the offers load view controller via navigationController, just subview its view on the offersviewcontroller (the third one) like this in the viewDidLoad method:
OffersLoadViewController *offerLoadView = [[OffersLoadViewController alloc] initWithNibName:#"OffersLoadViewControllerv" bundle:nil];
[self.view addSubview: offerLoadView.view];
After dealing with loading just remove it:
[offerLoadView.view removeFromSuperview];
I'm using a Container View control through interface builder to embedded a UINavigationController and its stack into my app.
The problem I'm having is that the back button does not work on all pushed VCs over the Root VC.
You press the automatically generated back button on these pushed VCs and nothing happens.
Edit:
There is no code written. Its all set up in IB at the moment.
As you can see...Container View with its embedded view controller set to the UInavigation Controller. The whitespace on the left will be a swipeable menu eventually - thats the reason for the set up. Then there's a next button on the root RV which segues to a second view controller.
That state is shown above. Pressing the back button (labelled test) does nothing. Normally it would pop the top view controller and go back to 'test'. Clearly the embedding is interfering with the normal UINavigiationController function somehow.
I just dont know how.
Another Edit:
Making a custom button on that top View Controller and manually calling
[self.navigationController popViewControllerAnimated:true];
Actually works and the top view controller is removed from the stack.
So the question is why does the back button not work?
I had a similar problem when I forgot that I added a tap gesture recognizer to my navigation bar. The back button actually received touches (pushed state) but as in your example did nothing. A custom button on the navigation bar worked though.
Once I removed the gesture recognizer the back button worked again.
Maybe some other view/or gesture recognizer in your container view is catching the touches...
Here is my current problem. I have a UIViewController setup with its data and everything on a small sized view controller. What I am trying to see is if it is possible to connect that to a separate view controller. For example I have a view controller that has a user click a button. Upon pressing the button the UIPicker ViewController would pop up from the bottom and I could go from there. I know how to enable this if the picker is on the same view controller. However, I have no idea how to if its on its own ViewController. Any ideas?
One way to do this would be to put the picker view on the same view controller and make it hidden, and, when they press the button, unhide it or load the other view controller when they press the button; this will display the other view controller, not what's on the current one.
I have an initial 'parent menu' view controller with a 'photos' button (more buttons to come like 'events').
From the Photos button I have a simple ctrl-drag segue to a navigation controller which has a tableview as it's first view(albums), collections view(thumbs), then imageview(fullsize).
The problem I am having is:
I want to be able to segue back to the initial simple 'parent menu' view controller from the first table view after the nav controller.
I tried:
dragging a button into the table view's top menu bar area (it was considered a UINavigationItem) and dragging a segue back to the menu... didn't work.
setup outlet from button in the tableview menu area to its parent view and calling [self performSegueWithIdentifier: #"BackToMenu" sender: self]; from there, didn't work.
dragging a button into the table view as a last item and ctrl+dragging it as a segue to the menu: didn't work.
tried a segue going back from the nav controller to the menu and manually calling it, but the outlet function connected to the 'menu' button I dragged into the tableview top back NEVER gets hit.
What am I missing?
I plan to have a few navigation controllers going out from the menu page in the storyboard from multiple buttons.
You don't need a segue for this. You can create a button in your table view and link it to an action in your table view which dismisses the currently presented view controller (I'm assuming your segue that presented the navigation controller stack in the first place was of a "modal" type):
[self.navigationController dismissViewControllerAnimated:YES completion:nil];
Alternatively, you can look into "Unwind Segues" but I haven't used these myself yet so wouldn't like to include details here.
You can drag a "Bar Button Item" to the left side of the first table view after the navigation controller. From there, do the control-drag back from the bar button item to the initial view controller, and choose a "modal" segue. While this answers your question, as #jrturton said in the comments below, this isn't optimized, because it will create a new instance.
If you want to do this programmatically (which will return to the existing instance), create an IBAction for the Bar Button Item on the table view controller. For example in iOS 6:
-(IBAction)returnToParentMenu:(id)sender {
[self dismissViewControllerAnimated:YES completion:nil];
}
or in iOS 5:
-(IBAction)returnToParentMenu:(id)sender {
[self dismissModalViewControllerAnimated:YES];
}
What I wound up doing was making the nav controller first before anything and then my menu page was first with buttons down each respective path.
on the above: The ctrl+drag didnt work from the nav bar button, kept totally blowing up.
I did not realize I could go from nav controller to a regular view controller first. thought it needed to go to table view first since when you drag out a nav it comes paired with a table.
If I had 10+ 'points' in this strange forum I'd post a screen shot of the storyboard.
Thanks all
I'm using storyboard to create an iPad app. On the main view I have a toolbar and a bar button item, let's call it "show". Then I have dragged a table view controller into the storyboard. I have also added a subclass of UITableViewController to the files and made the class of the dragged table view controller to be that subclass. And I made a popover segue from the "show" button to the table view controller. It works fine, meaning that when "show" pressed I see the popover showing the correct data that I set in the table view. What I cannot seem to figure out is how to put a toolbar on top of the table view in the popover. I took a step back and used a UIViewController instead of UITableViewController and still cannot add a toolbar by dragging it to the view. Any help will be appreciated.
I ended up putting the TableViewController within a NavigationController and the latter in a PopoverController, all in the code, without using IB. I found this an easier solution to get the toolbar than anything else that might work.