navigationbar

问题 i'd like to change the colour of the active menu links to green. I tried various ways (looking at the developper mode what rules applied from the framework), but it did not work. Can you please advise how to proceed? I'm using Bootstrap 4 and also mdbootstrap. The HTML code: <nav class="navbar navbar-expand-md navbar-light sticky-top"> <div id="navcontainer" class="d-flex container py-2 justify-content-center align-items-center"> <!-- Logo+Nev --> <div id="nevtitulus" class="d-flex align

问题 AppStore app has an icon with an image on the right side of the NabBar with Large Title: Would really appreciate if anyone knows how to implement it or ideas on how to do it. BTW: Setting an image for UIButton inside of UIBarButtonItem won't work. Tried already. The button sticks to the top of the screen: 回答1: After several hours of coding, I finally managed to make it work . I also decided to write a detailed tutorial : link. Follow it in case you prefer very detailed instructions. Demo:

来源： https://stackoverflow.com/questions/57108069/swiftui-navigationbartitle-displaymode-inline-crash

问题 My HomeView (where I store list of Movies ) has NavigationView and NavigationLink with destination to DetailView . When I want to add NavigationBarItems in my DetailView , it makes my GoBack Slide (from DetailView to HomeView ) useless. The app freezes when I stop sliding in ~1/3 of screen. I don't have additional NavigationView in DetailView , because when I had it I had it doubled in DetailView . I found lines of code which ruins everything. It's part with NavigationBarItems :

问题 I followed this article on how to display a SearchBar in the NavigationBar. I integrated it like this into my view: struct ExploreView: View { @ObservedObject var searchBar = SearchBar() var body: some View { NavigationView { ZStack { Color(red: 250/255, green: 250/255, blue: 250/255) .edgesIgnoringSafeArea(.all) VStack(spacing: 0) { Image(R.image.navigationBarBackground) .resizable() .scaledToFit() .frame(width: UIScreen.main.bounds.width) .edgesIgnoringSafeArea(.all) Spacer() } }

问题 I have an application with a navigation bar. When I click on a photo preview in my application, it displays the photo in full screen. But when I close the full screen, the view of my controller is under the navigation bar. I saw on StackOverflow that it was necessary to add this line: self.edgesForExtendedLayout = [] It works but it creates another bug. So I would like to know if there was another alternative? UPDATE : 回答1: 1- Make your navigation bar opaque. self.navigationController

问题 I have two structs ContentView.swift struct ContentView: View { var body: some View { NavigationView{ ZStack { Color(red: 0.09, green: 0.63, blue: 0.52) .edgesIgnoringSafeArea(.all) VStack { Image("flower_logo") .resizable() .aspectRatio(contentMode: .fit) .frame(width: 150.0, height: 150.0) .clipShape(Circle()) Text("ScanFlower") .font(Font.custom("Pacifico-Regular", size: 40)) .bold() .foregroundColor(.white) Text("DETECT FLOWER SPECIES") .foregroundColor(.white) .font(.system(size: 15))

问题 Xcode 11.4 - iOS 13.4 Navigation bar UIBarButton items are not working as expected. (I used storyboard for buttons - no code written) It was working just fine after I updated Xcode. Now it is not working. Only Green area can be touched. Images can not. I also checked Screen Debugger and everything is seems correct. There is a question like this but for search bar and push. However, answers not solving my problem. If you can not figure out how the hell is not working? You can also check this

问题 I am using a full-screen ‍ Dialog to show ExoPlayer video in full screen mode. I am already using the following code in the onCreate method of the Activity hosting the Dialog to hide the Navigation Bar . public class BaseActivity extends AppCompatActivity { @Override protected void onCreate(@Nullable Bundle savedInstanceState) { super.onCreate(savedInstanceState); //Hide the navigation bar in the beginning final View decorView = getWindow().getDecorView(); int uiOptions = View.SYSTEM_UI_FLAG

问题 I have bottom navigation bar on click of item in navigation bar i am replacing fragments. I have 3 fragments A,B,C so on click of b item B fragment is loaded and in B i am calling 3-4 APIs. So now if i go to C and then again come to B a new instance of B Fragment is created and again those APIs are called how can i save the fragment instance state and not call APIs again while changing fragments. This is my code. mBottomNavigationView.setOnNavigationItemSelectedListener(new