I want to use addSubview method to add new view on my screen. However, new view must also include navigation bar etc. which means it should include entire screen. What should i do?
Whenever i try to addSubview it always shows new view under navigation bar.
I don't want to use pushViewController or presentModelViewController because new added view will be low opacity and i can see background but i do not want to interact with background objects like bar buttons table etc.
Sorry for english, i hope, i clearly told what problem is.
Just set the frame property of the view you add before, and set it with screen bounds.
[myView setFrame:[[UIScreen mainScreen] bounds];
[self.navigationController.view addSubview:myView];
If you want to disable interaction with the navigation bar :
[self.navigationController.navigationBar setUserInteractionEnabled:NO];
You could take a look at adding another UIWindow above your root window.
when I tried doing the navigationController.view addSubview, it wouldn't cover my tab bar so I did the following with my app delegate's window:
[self.window addSubview:myView];
if you need access to your appDelegate from another class, you'd just import your application delegate and call it from that.
Related
I have an application that is supporting only ios7+ The navbar setup is using the new 64px high bar that appears beneath the status bar. Here is what it looks like when the app launches:
If I do any sort of "presentViewController", when i dismiss the view the navbar shifts back to 44px height and still appears underneath the status bar which in-turn makes all the contents of the view also shift up. Here is what that looks like:
It doesn't matter if I am presenting one of my own views or if I simply present a UIImagePickerView, any sort of slide up modal via the navigation controller breaks the navbar setup. Any ideas on how to fix this?
A few notes:
in plist: "View controller-based status bar appearance" is set to "NO"
navbar configured with self.navController.navigationBar.translucent = NO;
I am using .xib NOT Storyboards
UPDATE:
I have the navigation controller inside of a PKRevealController (https://github.com/pkluz/PKRevealController). Taking the reveal controller out and just adding the nav controller to the window itself fixes the issue... why would the reveal controller cause it to behave differently?
SOLUTION:
It turned out that the PKRevealController library was causing the issue. I reworked how it was set up in the AppDelegate and that solved the problem, although it's sorta of "hacky". I put my "before" and "after" configurations below:
the initial setup was :
configure PKRevealController
configure NavController and add rootView
set pkreveal front view = navController
add reveal controller to window as windows root view
the fix is
create a containing NavController
do stpes 1-3 above
add pkrevealcontroller to the containing navController
set containing nav controller nav bar to hidden
add containing nav controller to window as root view
If its navigationcontroller than you can use this inside every viewcontroller's viewdidload:
if ([self respondsToSelector:#selector(edgesForExtendedLayout)]) {
self.edgesForExtendedLayout = UIRectEdgeNone;
}
I had the same problem, but solved very easily by just setting the UINavigationBar Y-position to 20px and not to 0px. Then you have to assign the UINavigationBarDelegate to your ViewController:
[_navigationBar setDelegate:self];
Furthermore you have to add this method to your ViewController, which will be called because of the Delegate assignment:
-(UIBarPosition)positionForBar:(id<UIBarPositioning>)bar
{
return UIBarPositionTopAttached;
}
I am trying to programmatically add a Navigation Controller to my View based Application. This is the code I am using (this code gets called after a button press in a view controller):
MainMenu *control = [[MainMenu alloc] initWithNibName: #"MainMenu" bundle: nil];
UINavigationController *navControl = [[UINavigationController alloc] initWithRootViewController: control];
[self.view addSubview:navControl.view];
[control release];
That works, but this ends up happening:
Notice the odd margin above the Navigation control.... My View controller that I am adding the Navigation Controller to has a gray background which you can see.
Any ideas??
If you have a better way of adding a Navigation Controller to a View based Application I am very open to suggestions!
Thank you in advance!
Thank you both for your response, but unfortunately, wantsFullScreenLayout set to YES or NO in the code didn't have any effect. I was able to push the Navigation Controller up by 20 using this line of code:
self.navigationController.navigationBar.frame = CGRectOffset(self.navigationController.navigationBar.frame, 0.0, -20.0);
but then what happened was that the View Controller did not move up with the Navigation bar and left a gap below the Navigation Bar and the View Controller. What eventually worked was checking the Wants Full Screen checkbox in IB in the MainWindow view controller that is automatically generated when you set up a view based application.
The gap you are seeing is the same height as a status bar. Check the status bar settings in your NIB file.
Chances are you want to make the UINavigationController the root view controller for the window, rather than whichever view controller you have now. That would be the better way to do it.
The reason you're seeing that extra margin at the top is because UINavigationController normally expects that it will be sized to fill the entire screen (except perhaps a tab bar at the bottom, if it's inside a UITabBarController), and therefore expects that the top edge of its view will be under the status bar if the status bar is visible. Therefore, it places its navigation bar 20 pixels below the top of its view to leave space for the status bar, without bothering to check whether its view actually is under the status bar. Interestingly, sometimes a re-layout operation will perform this check, but that's unreliable. What I've found works well in a situation like this is to set the UINavigationController's wantsFullScreenLayout property to NO. Then ti doesn't try to leave room for the status bar, so everything works as expected.
I've been struggling with this same issue this morning. Since setting the wantsFullScreenLayout property doesn't seem to have any effect, I resorted to using a little subclass, which worked fine:
#interface MyNavigationController : UINavigationController
#end
#implementation MyNavigationController
- (BOOL)wantsFullScreenLayout;
{
return NO;
}
#end
Its so simple to remove that gap..
self.navigationBar.view.frame = CGRectMake(0, -20, 320, 480);
How do I set the modalViewControll to a particular size?
UINavigationController *NC = (More stuff);
[self presentModelViewController:NC]...;
that code presents my UIViewController as a full screen. I want to to be a smaller window size is that possible or do I need to do a popovercontroller?
If you want something other than full screen you can look at setting the modalPresentationStyle property on the UINavigationController you're about to display.
NC.modalPresentationStyle = UIModalPresentationFormSheet;
Look at the documentation to see what styles are available. If you need something different than those styles then you'll have to do it all yourself. If you use a UIPopoverController you have to be prepared for the user to dismiss your popover by simply tapping elsewhere on the screen.
Check out the modalPresentationStyle property of UIViewController.
I need to display a UIView/UIViewController when the user taps a button and the modal view should appear just like how the key board appears from the bottom bar when you edit text in a UITextField. Using the following code, I get to show it as a pop up.
[self presentModalViewController:child animated:YES];
How to make it appear like the keyboard?
I understad modal views cover the entire screen. But I really want a view that covers only half the screen. So, please tell me why this doesn't work
MyController *controller = [[MyController alloc] initWithNibName:#"MyView" bundle:nil];
CGRect frame = CGRectMake(0,44,768,264);
[controller view].frame = frame;
contoller.delegate = self;
[[self view] addSubView:[controller view]];
[controller release];
I am trying to add a sub view to my current view and make it appear where the keyboard appears.
Check if your child.modalTransitionStyle == UIModalTransitionStyleCoverVertical.
(And a model view controller always cover the whole screen. If you just need to cover half of the screen like the keyboard, you need to put the view controller's view as a subview of the main view, then animate it in manually with animation blocks.)
I know its an old question, but an answer to this is to use a UIActionSheet.
It won't present a View Controller, but you can present custom views that only cover a portion of the screen.
Check out this question for more information
Add UIPickerView & a Button in Action sheet - How?
I'm trying to display a UILabel on top of a UINavigationController. The problem is that when I add the UILabel as a subview of UIWindow it will not automatically rotate since it is not a subview of UIViewController (UIViewController automatically handles updating subviews during rotations).
This is the hierarchy I was using:
UIWindow
UILabel
UINavigationController
So I was thinking I could use the following hierarchy:
UIWindow
UIViewController
UIView
UILabel
UINavigationController
This way the label could be displayed on top of the UINavigationController's bar while also automatically being rotated since it is a subview of UIViewController.
The problem is that when I try adding a UINavigationController as a subview of a view:
[myViewController.view addSubview:myNavigationController.view];
it will appear 20 pixels downwards. Which I'm guessing is because it thinks it needs to make room for the status bar. But, since the UINavigationController is being placed inside a UIView which does not overlay on top of the status bar, it is incorrectly adding an additional 20 pixels. In other words, the top of the UINavigationBar is at the screen's 40 pixel mark instead of at 20 pixels.
Is there any easy way to just shift the UINavigationController and all of its elements (e.g. navigation bar, tool bar, root view controller) up 20 pixels? Or to let it know that it shouldn't compensate for a status bar?
If not, I guess I would need to use my first hierarchy mentioned above and figure out how to rotate the label so it is consistent with the navigation bar's rotation. Where can I find more information on how to do this?
Note: by "displaying a label on top of the navigation bar", I mean it should overlay on top of the navigation bar... it can't simply be wrapped in a bar button item and placed as one of the items of the navigation bar.
Using this code seems to work:
nav.view.frame = CGRectMake(nav.view.frame.origin.x, nav.view.frame.origin.y - 20,
nav.view.frame.size.width, nav.view.frame.size.height);
I did this before adding the navigation controller as a subview. Using the [UIApplication sharedApplication].statusBarFrame instead of the hard coded 20 would probably be a good idea too.
I'm not sure if it's the best way to do it though.
If you want a frame representing the available content area, then you should just use: [[UIScreen mainScreen] applicationFrame]. Of course, this restricts your top-level view controller so that it can only be top level. So still kind of dodgy, but less so.
Why don't you use App Frame instead of adding some values to origins? I mean using:
CGRect appFrame = [[UIScreen mainScreen] applicationFrame];
as a reference frame, and do something like this:
nav.view.frame = CGRectMake(appFrame.origin.x, appFrame.origin.y, ...
This one worked for me.
I had this same problem actually but managed to fix it.
I noticed that my view controller's view had the correct frame, but the view controller's navigation bar did not (it had a frame origin of (0,20) ).
Insert this into the view's controller that is the superview of the navigation controller:
- (void) viewDidAppear:(BOOL)animated {
if (navigationController.navigationBar.frame.origin.y != 0) {
[[navigationController view] removeFromSuperview];
[[self view] addSubview:navigationController.view];
}
}
Swift 5:
add the following line in the viewDidLoad() of the root view controller of the UINavigationController.
self.edgesForExtendedLayout = [.top, .bottom]