uinavigationitem

问题 I have a custom navigation item title that is simply two labels, one on top of the other, loaded from a .xib file. It's loaded by calling this: class Utilities { /// Title and subtitle format custom title in Navigation bar. Top and bottom text are centered on one another. /// /// - Parameters: /// - navigationItem: The receiving controller's navigation item. /// - titleText: Top text to be displayed a little larger and more bold. /// - subtitleText: Bottom text to be displayed a little

问题 This post is a separate topic but related to Custom Nav Title offset ios 11 I created a new thread because it is a separate issue. From project: https://github.com/ekscrypto/Swift-Tutorial-Custom-Title-View To recreate the problem, simply put a button on the existing Root View Controller that pushes another view controller. The "< Back" button scoots the title over, which makes it terribly uncentered. How can I fix this? Thank you. 回答1: Simple change required to support earlier versions of

问题 I'm looking for a way to create programmatically an UIBarButtonItem that looks like a back button of UINavigationBar . Apparently seems like that the back button appears only after a push on the UINavigationController . So I'm able to insert only a button with the "cancel" style. But my goal is to create a button with the "New Item" style. Ideas ? 回答1: the short answer is you cannot do it. you can save an image and you can put the image to that position, but the back button is managed by

问题 I tried this code: navigationController?.navigationItem.backBarButtonItem?.title = "" but it does not work and did not change anything. How can I set backButton text to empty? 回答1: I tried this code for back button title. and it's work correctly let barButton = UIBarButtonItem() barButton.title = "" self.navigationController?.navigationBar.topItem?.backBarButtonItem = barButton 回答2: self.navigationController!.navigationBar.topItem!.title = "" 回答3: You should use: navigationItem

问题 The question is simple, how can I prevent a Large Title Navigation Bar from collapse when a scrollview scrolls down? My navigation must have a large navigation bar at all times... so when a scrollview scroll, the navigation bar shouldn't collapse up, it should stay the same size, how can I do that? This is how I set the largeTitle preferences override func viewWillAppear(_ animated: Bool) { super.viewWillAppear(animated) self.navigationItem.hidesBackButton = true presenter

问题 I am using a MPMoviePlayerViewController to present videos. Everything works as expected, but if I switch the device's language to e.g. German, the "Done" button is not localized. I tried to access the button and set it to my own button implementation like so: MPMoviePlayerViewController *mp = [[MPMoviePlayerViewController alloc] initWithContentURL:url]; NSLog(@"%@", mp.navigationItem.leftBarButtonItem); // always null, but why? // override button with locale mp.navigationItem

问题 It works with import UIKit class ViewController: UIViewController { override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view, typically from a nib. self.navigationController?.navigationBar.setBackgroundImage(UIImage(), forBarMetrics: .Default) self.navigationController?.navigationBar.shadowImage = UIColor.redColor().as1ptImage() } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() // Dispose of any resources that can be

问题 I have a UIButton in a navigation bar that sits over the top of a UIImage and a UILabel . It worked fine in iOS 10, but now in iOS 11 it doesn't recognize any taps from my @IBAction outlet. I tried moving the tap outlet to the bar button item, but that didn't work either. The UIButton has the following constraints: I confirmed that it's there by giving it a green background, so I know it's visible and available. Any idea what's going on? 回答1: I found a solution from another developer. You

问题 I have a UIButton in a navigation bar that sits over the top of a UIImage and a UILabel . It worked fine in iOS 10, but now in iOS 11 it doesn't recognize any taps from my @IBAction outlet. I tried moving the tap outlet to the bar button item, but that didn't work either. The UIButton has the following constraints: I confirmed that it's there by giving it a green background, so I know it's visible and available. Any idea what's going on? 回答1: I found a solution from another developer. You

问题 how could I get the frame of a rightbarbuttonItem in swift? I found this : UIBarButtonItem: How can I find its frame? but it says cannot convert NSString to UIView, or cannot convert NSString to String : let str : NSString = "view" //or type String let theView : UIView = self.navigationItem.rightBarButtonItem!.valueForKey("view")//or 'str' The goal is to remove the rightBarButtonItem, add an imageView instead, and move it with a fadeOut effect. Thanks 回答1: You should try it like: var