uinavigationbar

问题 I'm trying to hide android nav bars like that : @TargetApi(Build.VERSION_CODES.JELLY_BEAN) public void hideNavBarsParent(){ mDecorView = getWindow().getDecorView(); mDecorView.setOnSystemUiVisibilityChangeListener( new View.OnSystemUiVisibilityChangeListener() { @Override public void onSystemUiVisibilityChange(int flags) { hideNavBars(); } }); } I'm calling hideNavBars() there, realisation is - @TargetApi(Build.VERSION_CODES.JELLY_BEAN) public void hideNavBars(){ if(UrlWorker.isJelleyBean())

问题 I am a beginner with iOS development. Currently I have migrating a ios5 code to the ios7. Getting the following overlap issue in my code : http://s17.postimg.org/90m7mx5lb/collide.png I have updated the app delegate with the following code : self.window.frame = CGRectMake(0,20,self.window.frame.size.width,self.window.frame.size.height-20); The interface etc, is generated directly via ViewController code and not using Interface Builder or StoryBuilder. Please advice.. UPDATE: Using the

问题 I need to put a UIView between Status bar and Navigation bar in Swift. I have seen many answers but none of the seems to work. Here is my code let newView = UIView() let label = UILabel() label.text = "header" newView.addSubview(label) UIApplication.shared.keyWindow?.addSubview(newView) let rootVC: HomeVC = UIStoryboard(.Home).instantiateViewController() navController = UINavigationController(rootViewController: rootVC) self.window?.rootViewController = self.navController self.window?

问题 I,m building an article read app for iPad and using split view controller. Master view contains menu list and detail view controller contains list of article. Clicking on list of articles it opens in a new view and i’m using a segue and navigation controller to connect detail view controller and Next view in which article opens. Segue with Modal style.I’m facing a problem there is no back button when article opens in a next view. 回答1: The article view is being presented modally, so there is

问题 Context: UINavigationController with a UITableViewController UISearchController in the navigation bar Navigation bar translucent with black style, it uses large title, tintColor , barTintColor (so no background image). Issue: I have a strange animation glitch that shows a hairline above the search bar. The hairline appears only during the scroll. I have already tried many solutions concerning similar problems, but they have not helped. Tested with an iPhone 7 with iOS 12.1.3 回答1: You can fix

问题 I am facing an issue in implementing expandable banner on top like whatsapp do in profile screen. When user scroll image squeezes and convert into navigation bar. For that i have to set minimum height in my code but due to notch screen in iphone X and other new iphones it causing issue. Because old iphone doesnot have notch screen so there navigation bar height is less than new iphones? So there is any way to find out the iphone is notch screen or normal type screen? 回答1: This way you can

问题 I currently have a navigation bar with large titles enabled that also supports two rows with the following code in the viewdidLoad: navigationController?.navigationBar.prefersLargeTitles = true self.navigationController?.navigationItem.largeTitleDisplayMode = .automatic let date = Date() let formatter = DateFormatter() formatter.dateFormat = "MMMM dd" let result = formatter.string(from: date) self.title = “This is a Test\n\(result)" var count = 0 for item in(self.navigationController?

问题 The navigation bar has a .isTranslucent property that gives it that gray background color navigationController?.navigationBar.isTranslucent = true I want my entire view controller to match that same exact color and .lightGray isn't it. I tried playing with the view controller's view's .alpha and .isOpaque properties but I cannot get it to match. Does anyone know the rgb colors or another way I can get my view controller's view's background color to match that same translucent gray color?

问题 I have a view controller that needs to hide the status bar before presenting a modal and after that modal is dismissed. This is not as simple as overriding prefersStatusBarHidden and then setting modalPresentationCapturesStatusBarAppearance because that will also cause a jump given I am presenting over the current context (the modal is a pull down to dismiss). Consider the instagram story UX, as an example. When tapping on a story, you actually see the status bar disappear before the story

问题 In IB I created a xib with a navigation bar and a grouped tableview. In landscape mode, the nav bar doesn't resize properly. I tried to change the autosizing mask. I changed it from IB. For the nav bar, I have set flexible width (red arrow) and the edge distances from superview ones are all set except the bottom margin (no red line, that is flexible bottom margin). For the tableview all lines are red except the top margin (so flexible top margin)... the nav bar resizes, but the two buttons on