I've got a UIViewController that I would like to display over top of my UITabBarController kind of like a custom UIAlertView. The problem is that, when I present the UIViewController, I'm unable to resize its view to fit whatever screen is currently being used. The UIViewController (ShareViewController is its name) is designed using a .xib file, and it's currently using iPhone 5 screen height. I basically just want to resize its UIView (view) if the app is being run on any device, but it won't work when I call setFrame.
Here is some code:
ShareViewController * svc = [[ShareViewController alloc] initWithNibName:#"ShareViewController" bundle:nil];
self.tabBarController.modalPresentationStyle = UIModalPresentationCurrentContext;
[self.tabBarController presentViewController:svc animated:NO completion:nil];
[svc.view setFrame:[[UIScreen mainScreen] applicationFrame]];
I use the "UIModalPresentationCurrentContext" setting so I can show the ShareViewController with a transparent background. So, when I run this code the ShareViewController just gets added but goes off screen because it is still at the iPhone 5 display height.
What can I do to resize my ShareViewController's main view?
Instead of presentviewcontroller better make it as addsubview and apply animation like present modal view controller
I gave the group of buttons a container which I then translated upwards depending on the screen center. This is a bit of a hack fix but I think there is a better way to implement this custom UIViewController anyway.
Related
I have two view controller which Controller A and B. A controller displaying some info on screen. On top right of A screen I have a UIButton on click of button I want to show a help screen which will have some labels & when I touch the help screen it should go away.
I can do it by adding a view on top of all view & hide, show it. But I want to know how can I show HelpScreenViewController as a semitransparent view controller on top of first view controller on click of UIButton. When I tap on HelpScreenViewController it should go away.
EDIT:
I have added below code but does not work
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"Main" bundle:nil];
UIViewController *vc = [storyboard instantiateViewControllerWithIdentifier:#"TopOverVc"];
vc.view.backgroundColor = [UIColor clearColor];
self.modalPresentationStyle = UIModalPresentationCurrentContext;
[self presentViewController:vc animated:NO completion:nil];
Thanks in advance.
For what you described, you dont need a ViewController to contain the 'TopOver' view. A normal UIView would be better. Place that within your first ViewController, in interface builder. Drag it into your A ViewController class, along with the button. When the button is clicked, just show/hide your view containing the info you need.
You can use the containerView control and you can add the childViewController for it. You can use this as overlay by doing the background colors transparent as your needs.
This article may help help you http://spin.atomicobject.com/2015/07/21/ios-container-views/
One more thing, you can set this containerview hide/visible as you need.
I just added a separate view controller and xib in a project that uses storyboards throughout. I display it from inside another view controller with the usual code:
OtherVC *othervc = [[OtherVC alloc] initWithNibName:nil bundle:nil];
[self.view addSubView: othervc.view];
In portrait orientation, he xib displays and auto rotates properly right out of the box.
But when I display it when the iPad is already in landscape, the size of the view is portrait and positioned off to the left.
What's going on? There doesn't seem to be a way to add constraints to the view.
Thanks!
This is not the right way to present a separate viewController.
The problem is that you are adding a view on the actual view..but this view have a certain frame that will remain the same when you add it on the view..in both case (landscape and protrait). So, to understand, you should check the orientation and then set the frame of the view properly. But as i said, the way that you are using is wrong.
In your case you should use segue from storyboard.
Or, at max, by code but with something like:
OtherVC *othervc = [self.storyboard instantiateViewControllerWithIdentifier:#"Identifier"];
[self presentViewController:othervc animated:YES completion:nil];
where Identifier is set in your viewController in the storyboard by the inspector panel at the right.
Or, if you instead wanted to say "NIB" you should to do:
OtherVC *othervc = [[OtherVC alloc] initWithNibName:#"yourNibName" bundle:[NSBundle mainBundle]]; //Or your correct bundle but i guess will be this.
[self presentViewController:othervc animated:YES completion:nil];
So after this, if you are sure to have set both orientation on your project, your view will be in landscape.
Now you will use AutoLayout or normal mask rules without AutoLayout to manage the elements on the view.
I have designed two ViewControllers - VCLarge and VCSmall. VCSmall is freeform.
When I display VCSmall on top of VCLarge - I shows full screen.
So I play tricks and change the formSize in ViewWillAppear - The VCLarge still does show (I see black)
FYI - I do this when the ViewControllers are in a storyboard and have no problem.
IF you want to present your viewcontroller like UIPopover controller like below...
Please see this OpenSource FPPopver.
It is perfect and works fine.
Very easy to implement.
https://github.com/50pixels/FPPopover
YourViewController *controller = [[YourViewController alloc] init];
//our popover
FPPopoverController *popover = [[FPPopoverController alloc] initWithViewController:controller];
[popover presentPopoverFromView:okButton];
That's all.
If you want to get rid off that ARROW tip, you can do that too!
you use [UIView addSubview] to show it on top of VCLarge.
For example, if you're within VCLarge, you would do something like this:
UIView *smallView = [VCSmall alloc] init...
[self.view addSubview:smallView];
You can adjust the size and or position of smallView using appropriate CGRects for smallView.
I am looking for a way to implement this kind of popover.
Are there basic iOS commands to generate this style instead of the usual Arrow + Border popover that we see in XCode? Or is there an API to do this kind of thing.
The popover is coming up from the bottom of the screen, just like in the App Store animation sometimes.
Thank you
What you want to do is create a custom UIVIewController with the modal presentation style set to UIModalPresentationFormSheet:
YourCustomViewController *customVC = [[YourCustomViewController alloc] initWithNib:#"YourCustomViewController" bundle:nil];
customVC.modalPresentationStyle = UIModalPresentationFormSheet;
[self self presentViewController:customVC animated:YES completion:nil];
You will also have to create a toolbar and format it correctly with a "close" or "done" button that will dismiss the view controller
I have a UIViewController called DashBoardViewController that acts as delegate for a UITabBar. In its xib I have placed a UITabBar with 3 UITabBarItem.
Each of these items activate a different View Controller, let's call them ViewController1, ViewController2, ViewController3
DashBoardViewController is supposed to show ViewController1 and select the first bar on loading, so in my initWithNibName I have what follows:
...
ViewController1* vc = [[ViewController1 alloc] initWithNibName:#"ViewController1" bundle:nil];
[self.view addSubview:vc.view];
self.currentViewController = vc;
...
I implement the UITabBarDelegate having something as follows:
if (item == viewController1Item) {
ViewController2 *vc2 = [self.childrenControllers objectAtIndex:1];
[self.currentViewController.view removeFromSuperview];
[self.view addSubview:vc2.view];
self.currentViewController = vc2;
} ...
Problem
The View Controller in the first UITabBarItem always works as expected, extending it to the full size of thew view.
However, in the second and following tabs, this doesn't happen: the view doesn't extends. This shows if, for example, I align a tab with the bottom in the ViewController2 XIB: this will not be at the bottom when viewed inside the UITabBarItem.
Note
Please note that this is not related to the XIB: if I invert ViewController1 and ViewController2, it will be ViewController1 the one failing to extend. It's related to the UITabBarItem.
Ideas
Possibly, this depends by the way I addSubview when I call the DashBoardViewController's initWithNibName. But I can't find a way to explain this.
Other details
All the XIB are set with "Size = none".
I can't really speak to the way you have your XIB setup without seeing it, but I can make a couple of suggestions.
The behaviour that you're trying to implement by removing & adding subviews to DashBoardViewController should really be handled by a UITabBarController. This provides a UITabBar, a view for your content and handles the logic of switching between UIViewControllers while keeping layout sane and being part of the SDK.
If for some reason you can't, or don't want to use a UITabBarController, I'd suggest implementing a viewWillLayoutSubviews method on your DashBoardViewController, like so:
- (void)viewWillLayoutSubviews
{
if( self.currentViewController )
{
self.currentViewController.view.frame = self.view.bounds;
}
}
Maybe also try adding the self.currentViewController.view.frame = self.view.bounds; line after you've swapped ViewControllers too, for good measure. This will make sure that the frame of your current ViewController's view is always sized to fill the bounds of DashBoardViewController's view.
This isn't the 'Proper' way to do it though, I'd really recommend using a UITabBarController if you can, since you don't know how much else of UITabBarController you'll end up re-implementing if you start rolling your own controller.
Any further problems will most probably be to do with the internal layout of your sub-ViewControllers, rather than their size / position in DashBoardViewController's view.
On your XIB File make sure that your set the flexible height to stick to top and bottom, this way the UITableView will always have the same height as the 4" display