uinavigationbar

问题 I have a UINavigationController with default value of it's navigationBar.prefersLargeTitles = true . I am switching that to false when I push into a new scene lets call it ( DetailsViewController ), by changing it into the viewWillDisappear . override func viewWillDisappear(_ animated: Bool) { super.viewWillDisappear(animated) navigationController?.navigationBar.prefersLargeTitles = false } Now in DetailsViewController I am using willMove(to parent:) . override func willMove(toParent parent:

问题 A storyboard based application is having issue rendering the navigation bar's content when the navigation bar is displayed in a modal screen, but only when on a physical device. The code behaves properly in iOS 12 and in all simulators both iOS 12 and iOS 13.2.2. On the left of the screenshot is a iPhone 11 simulator running iOS 13.2.2; on the right is a Reflector projection of my iPhone Xs running iOS 13.2.2 of the same code. We can see there's a space between the tableview and the

问题 A storyboard based application is having issue rendering the navigation bar's content when the navigation bar is displayed in a modal screen, but only when on a physical device. The code behaves properly in iOS 12 and in all simulators both iOS 12 and iOS 13.2.2. On the left of the screenshot is a iPhone 11 simulator running iOS 13.2.2; on the right is a Reflector projection of my iPhone Xs running iOS 13.2.2 of the same code. We can see there's a space between the tableview and the

问题 A storyboard based application is having issue rendering the navigation bar's content when the navigation bar is displayed in a modal screen, but only when on a physical device. The code behaves properly in iOS 12 and in all simulators both iOS 12 and iOS 13.2.2. On the left of the screenshot is a iPhone 11 simulator running iOS 13.2.2; on the right is a Reflector projection of my iPhone Xs running iOS 13.2.2 of the same code. We can see there's a space between the tableview and the

问题 I want to set color of "Done" button on navigation bar like this image: Although, I've set code as self.doneButton.enabled = NO; but Done button still has a white color. It does not change color like image. How to set the code to change text color done button like Done button in the image above? Please help me to solve this problem. I appreciate your help. 回答1: for change the color of barbutton use objective C self.navigationItem.rightBarButtonItem = yourRightbarbuttonName; self

问题 I tried to change the font color of the right bar button item to purple, but it still shows up as white. I've consulted this question and this question. How do I fix this? Code let sortButton = UIButton(frame: CGRect(x: 0, y: 0, width: 34, height: 15)) sortButton.setTitle("SORT", for: .normal) sortButton.titleLabel?.tintColor = UIColor.myMusicPurple sortButton.tintColor = UIColor.myMusicPurple navigationItem.rightBarButtonItem = UIBarButtonItem(customView: sortButton) navigationItem

问题 Bellow code is adding a customView to navigationItem successfully, but when trying to access the customView it always return nil override func viewDidLoad() { super.viewDidLoad() let customView = getCustomView() // supposed that the function return a custom view let actionButton = UIBarButtonItem(customView: customView) self.navigationItem.rightBarButtonItem = actionButton // successfully added customView print(navigationItem.rightBarButtonItem?.customView) // print always nil } Result : nil

问题 I have hidden my navigation bar in my table view controller, but after selecting the search bar and then dismissing it with Cancel it shows the navigation bar again. I tried -(void)searchBarTextDidEndEditing:(UISearchBar *)searchBar { self.navigationController.navigationBar.hidden = YES; } But it did not work, it did hide the navigation bar from the detail view though, but that was not desired. In storyboard I have a tabBarController --> navigationController --> tableView --> detailview.

问题 I have hidden my navigation bar in my table view controller, but after selecting the search bar and then dismissing it with Cancel it shows the navigation bar again. I tried -(void)searchBarTextDidEndEditing:(UISearchBar *)searchBar { self.navigationController.navigationBar.hidden = YES; } But it did not work, it did hide the navigation bar from the detail view though, but that was not desired. In storyboard I have a tabBarController --> navigationController --> tableView --> detailview.

问题 I am calling the -(void)setEditing:(BOOL)editing animated:(BOOL)animated method in my code to swap between two buttons on the RHS of my navigation bar. -(void)setEditing:(BOOL)editing animated:(BOOL)animated { [super setEditing:editing animated:animated]; // Toggle ‘+’ and ‘Add To Order’ button. if( editing ) { self.navigationItem.rightBarButtonItem = self.addItemButton; } else { self.navigationItem.rightBarButtonItem = self.addToOrderButton; } } Where self.addItemButton and self