uibarbuttonitem

问题 This is an extension of an earlier question:- ios Swift Items do not get added to cart The original issue is resolved. Now I have a supplementary hitch:- The issue is in CartViewController - When I click on "Checkout(2)" rightBarButtonItem in the ProductViewController, it shows error in CartviewController's "numberOfRowsInSection" function - Kindly see image & codes below:- class ProductViewController - import UIKit class ProductViewController: UIViewController, UITableViewDataSource,

问题 As you can see in the attached image, the bar button has its tint color set to red, however it is displayed in black. I think this is due to the text color still being black? Is there a way to change this? I changed the tint color of this bar button item, the navigation bar it is in, and the UIBarButtonItem.appearance() , as well as UINavigationBar.appearance() . Closing the popover and reopening it changes the color. EDIT In the hierarchy below the bar button has the correct tint color (no

问题 I began to learn Swift recently. When I tried to make my first App I got confused with UIBarButtonItem . If I put let UIBarButtonItem initialization outside the viewDidLoad() function, nothing happens when I press the Next Button. class ViewController: UIViewController, UITextFieldDelegate { let rightBarButton: UIBarButtonItem = UIBarButtonItem(title: "Next", style: .plain, target: self, action: #selector(onClickNext(button:))) override func viewDidLoad() { super.viewDidLoad() self.view

问题 I began to learn Swift recently. When I tried to make my first App I got confused with UIBarButtonItem . If I put let UIBarButtonItem initialization outside the viewDidLoad() function, nothing happens when I press the Next Button. class ViewController: UIViewController, UITextFieldDelegate { let rightBarButton: UIBarButtonItem = UIBarButtonItem(title: "Next", style: .plain, target: self, action: #selector(onClickNext(button:))) override func viewDidLoad() { super.viewDidLoad() self.view

来源： https://stackoverflow.com/questions/54515386/hide-or-remove-specific-item-from-navigation-bar-button-items-swift-4

来源： https://stackoverflow.com/questions/26348952/how-can-i-change-the-background-color-of-a-uibarbuttonitem-on-ios-7

来源： https://stackoverflow.com/questions/26348952/how-can-i-change-the-background-color-of-a-uibarbuttonitem-on-ios-7

问题 What's the easiest way to determine the x,y location of a UIBarButtonItem in a UIToolbar? The only answer I found is in any way to know where uibarbuttonitem has been drawn. All proposed answers seem too complicated. There ought to be a simpler way to get the position of the damn UIBarButtonItem isn't there? 回答1: I used this which seems to be the most elegant way - (CGRect)frameForBarButtonItem:(UIBarButtonItem *)buttonItem { UIView *view = [buttonItem valueForKey:@"view"]; return view ? view

问题 What's the easiest way to determine the x,y location of a UIBarButtonItem in a UIToolbar? The only answer I found is in any way to know where uibarbuttonitem has been drawn. All proposed answers seem too complicated. There ought to be a simpler way to get the position of the damn UIBarButtonItem isn't there? 回答1: I used this which seems to be the most elegant way - (CGRect)frameForBarButtonItem:(UIBarButtonItem *)buttonItem { UIView *view = [buttonItem valueForKey:@"view"]; return view ? view

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