uinavigationbar

问题 Is there any way to make navigation bar elements (back button) in iOS 6 look like navigation bar elements in iOS 7 ? And also buttons and other iOS 7 elements of UI. 回答1: Instead of putting code into every view controller that you need to customize, I would recommend doing this for the entire application by putting something like this in your application:didFinishLaunchingWithOptions: method in the App Delegate // Nav bar [[UINavigationBar appearance] setBackgroundImage:[[UIImage imageNamed:@

问题 I am setting a custom appearance for a specific navigation controller: //Set Cutom Nav Bar Appearance [[UINavigationBar appearanceWhenContainedIn:[MyNavigationControllerClass class], nil] setBackgroundImage: nil forBarMetrics: UIBarMetricsDefault]; [[UINavigationBar appearanceWhenContainedIn:[MyNavigationControllerClass class], nil] setBarTintColor: self.tableView.backgroundColor]; When the navigation controller is displayed, the expected color is RGB(247, 247, 247) - which I have double

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 navigation controller, and I've set to true its navigation bar's prefersLargeTitle property. Everything works fine, but when the text of my title becomes too big, it doesn't fit in space. Here how it looks: Is it possible to somehow make the title (while the navigation bar's prefersLargeTitle property is set to true) dynamically adjust its font size, and if it is so, how to achieve that? 回答1: This question is somewhat answered here: How to resize Title in a navigation bar

问题 Is it possible to add buttons to the navigation bar using the IPhone SDK? I already have 2 buttons in the navigation bar as leftBarButton and rightBarButton. I need 2 more buttons. How to implement that? Its not obligatory that i need them to be included in the navigation bar itself. But since the application contains only a table, i don't think it can be given elsewhere. 回答1: You can use the UISegmentedControl. Check the UICatalog code sample to check its usage in the navigation bar. Here is

问题 I have a question to add a right button in navigation bar.. I have two views: View A and View B I add a navigation bar to view A, after I used self.navigationController!.pushViewController to show view B. That show a back button in the left of navigation bar of view B automatic, it is good. but now I want to add a button in the right of navigation bar of view B.. I have tried some answers, but it doesn't work... I have tried answers likes : 1) https://www.hackingwithswift.com/example-code

问题 I have a question to add a right button in navigation bar.. I have two views: View A and View B I add a navigation bar to view A, after I used self.navigationController!.pushViewController to show view B. That show a back button in the left of navigation bar of view B automatic, it is good. but now I want to add a button in the right of navigation bar of view B.. I have tried some answers, but it doesn't work... I have tried answers likes : 1) https://www.hackingwithswift.com/example-code

问题 I'm adding a segmented control to a navigation bar in my iPhone app. By default the color of the segmented control matches the color of the navigation bar. I want to match the color of the segmented control to other buttons in the navigation bar (like the back navigation button). Can anyone tell me an RGB value (or a system color) that matches the default color of UIButtonBarItems that have been added to a UINavigationBar with a style of UIBarStyleDefault? 回答1: After a while, I realized that

问题 I'm adding a segmented control to a navigation bar in my iPhone app. By default the color of the segmented control matches the color of the navigation bar. I want to match the color of the segmented control to other buttons in the navigation bar (like the back navigation button). Can anyone tell me an RGB value (or a system color) that matches the default color of UIButtonBarItems that have been added to a UINavigationBar with a style of UIBarStyleDefault? 回答1: After a while, I realized that

问题 I'm adding a segmented control to a navigation bar in my iPhone app. By default the color of the segmented control matches the color of the navigation bar. I want to match the color of the segmented control to other buttons in the navigation bar (like the back navigation button). Can anyone tell me an RGB value (or a system color) that matches the default color of UIButtonBarItems that have been added to a UINavigationBar with a style of UIBarStyleDefault? 回答1: After a while, I realized that