I am building an app for that I have used MMDrawerController as my slide navigation controller.
I have gone through their documentation but did not find any code specific to gestures as such. Can you help me out over here.
Your can add UITapGestureRecognizer to navigationBar with UIGestureRecognizerDelegate of gesture in controller.
Overrive func gestureRecognizerShouldBegin, then calculator size than can executive tap gesture (ignore left, right bar item) -> Reture true
Custom title of navigationBar with:
navigationItem.titleView = otherView
and add action to this view
Related
Having a very weird behavior on iOS 10. Assume you have an empty app, created with a Master-Detail Application template. Place any UIView as a titleView in navigationBar for detail viewcontroller. Place any UIView to the right bar button items.
Then, write that code to configureView method:
if let item = self.splitViewController?.displayModeButtonItem {
self.navigationItem.leftBarButtonItem = item
self.navigationItem.leftItemsSupplementBackButton = true
}
Then configure splitviewcontroller preferredDisplayMode = .allVisible, so the displayModeButtonItem could appear.
On iOS 9 and lower this results in a standard behavior: the detail viewcontroller displays displayModeButtonItem expand button on a left side.
When user taps it, the icon transforms to an arrow. Tapping an arrow reverses button state.
On iOS 10 displayModeButtonItem displays as expand button, but if user taps it, it disappears.
Meanwhile, the button is still there and a user can tap it one more time. After that, displayModeButtonItem appears again with expand icon and backButtonItem icon as well. Just like it appears when we push another viewcontroller onto detail's navigationcontroller:
But in that case both of icons acts as displayModeButtonItem.
Is this an iOS bug, or a misconfig? What can I do to get normal button behavior?
Edit: I found out, that everything works as expected, if a titleView (of rightBarButtonItem's view) does not contain any constraints on it's child views. Filed a radar on this.
Edit 2: Some controls (like UIImageView) may implicitly add NSContentSizeLayoutConstraint, so, to prevent this behavior (and prevent the bug above), subclass it and override intrinsicContentSize method like this:
private class NoConstraintsUIImageView: UIImageView {
private override func intrinsicContentSize() -> CGSize {
// prevent implicit NSContentSizeLayoutConstraint adding in updateConstraints
return CGSize(width: UIViewNoIntrinsicMetric, height: UIViewNoIntrinsicMetric)
}
}
How can I hide my left bar button item?
In my storyboard I dragged a Navigation Bar onto my View Controller, then a Bar Button Item. Under certain conditions I want to hide the Bar Button Item.
None of this works:
override func viewDidLoad() {
self.navigationItem.leftBarButtonItem = nil
self.navigationItem.leftBarButtonItems = []
self.navigationItem.setLeftBarButtonItems([], animated: true)
}
I dragged a Navigation Bar onto my View Controller
Well, don't! There is a big difference between a navigation controller interface, where you set the navigationItem, and a loosey-goosey navigation bar just sitting there in the interface, which is what you have.
Embed your view controller in a UINavigationController and do things the right way. Then setting your navigationItem and its properties will work as expected.
You can't access to self.navigationItem.leftBarButtonItem because you manually drag navigationBar from storyboard. I would suggest to do the following instead:
add an IBOutlet of BarButtonItem (eg: barButton) that you created in storyboard
barButton.title = ""
barButton.isEnable = false
This will hide your BarButtonItem, and you can simply show it back later.
I have a navigation controller where I have enabled hide on tap.It hides at first when I tap on the screen but when I tap again,the nav bar hides but the toolbar does not hide at all and it is obstructing my view. I have already tried settoolbarhidden and toolbar.hidden properties but it does not work.How do I solve this?
EDIT : I need to hide it only on this screen,I need the toolbar for other screens so thats why I have enabled shows toolbar.
EDIT 2 : Let me frame my question better.
When I enter the view controller :
Both navbar and toolbar hides because I have set it to hidden which is good
When I tap the screen :
Both navbar and toolbar shows because I have set it this way in the previous view controller.(If possible,Can I only show/hide the navigationbar on tap not the toolbar?
And lastly when I tap it again to hide both bars :
The navigation bar hides but the toolbar does not go away? This is my problem.
As Per your question you want to show tool bar on a particular viewController. View Controller viewWillAppear Function Hide ToolBar and viewDidDisappear show your tool bar it will show on other view controllers.
" Please check the navigation controller checkbox its disable or not.After that set this on your view controller before your profile view controller "
override func viewWillAppear(animated: Bool) {
self.navigationController?.toolbarHidden = true;
}
override func viewDidDisappear(animated: Bool) {
self.navigationController?.toolbarHidden = false;
}
I think it will resolve your issue.
I had the same problem.
The hideBarsOnTap only work if you placed smth in it. So if it is empty it will stay.
You could just put a blank imageView or Label there for example.
Or if you want it completely blank, your only option is to put a tabGestureRecognizer on your View!
I want to hide/show navigationBar of a UINavigationController when the WKWebView zooms out/in.
To hide or show a UINavigationBar is quite easy as follows:
self.navigationController?.navigationBarHidden = true
But the problem is that I don't know where to put the code.
I am thinking to intercept the zoom event of WKWebView. May be there are other ways, any comments are welcome.
Every WKWebView has a scrollView property which allows you to access the UIScrollView part of the the web view. You can use the UIScrollViewDelegate method, scrollViewDidScroll to get callbacks on when the web view scrolls.
First, set the scroll view delegate:
let webView = WKWebView(...)
webView.scrollView.delegate = self
Then, implement the delegate method scrollViewDidScroll and add the logic to hide and show the navigation bar:
extension YourClass: UIScrollViewDelegate {
func scrollViewDidScroll(scrollView: UIScrollView) {
// you can use the position of the scrollView to show and hide your nav bar here
}
}
I found another way to achieve it:
self.navigationController?.hidesBarsOnSwipe = true
iOS 8.0 gives UINavigationController a simple property that masks some complex behavior. If you set hidesBarsOnSwipe to be true for any UINavigationController, then iOS automatically adds a tap gesture recognizer to your view to handle hiding (and showing) the navigation bar as needed. This means you can mimic Safari's navigation bar behavior in just one line of code.
I have a UINavigationBar based app. I've created a custom UIView with some titles and added it as a subview to the navigation bar:
[self.navigationController.navigationBar addSubview:_navbarView];
Everything works ok until I hit the back button in the navigation bar and the UIViewController transition occurs.
The problem is that my custom view doesn't fade away like the others elements in the UINavigationBar, it just stays the same and disappears when the transition is complete.
I want it to fade away during the transition like the native elements of the UINavigationBar, is there any way to achieve this?
If you add a subview to the navigation bar, then it will just stay there; the navigation controller doesn't know to do anything special with it. You say your custom view has "some titles" - have you tried doing this instead?
self.navigationItem.titleView = _navbarView;
Then the navigation controller knows that the view should be used in place of your controller's title, and it should animate in and out.
If that doesn't work, you'll need to look at becoming the navigation controller's delegate. Since iOS7, this can get quite complex.
If you need custom navigation bar it could be a good idea to create UINavigationController with custom UINavigationBar
- (instancetype)initWithNavigationBarClass:(Class)navigationBarClass toolbarClass:(Class)toolbarClass
in your navigation bar class you can implement
- (UINavigationItem *)popNavigationItemAnimated:(BOOL)animated
{
if (animated) {
//your_problem_view animation here
}
[super popNavigationItemAnimated];
}