我试图改变设置按钮的颜色为白色,但不能让它改变。
这两种方法我都试过:
navigationItem.leftBarButtonItem?.tintColor = UIColor.whiteColor()
navigationItem.backBarButtonItem?.tintColor = UIColor.whiteColor()
但没有变化,它看起来仍然是这样的:
我怎么把那个按钮变成白色?
我试图改变设置按钮的颜色为白色,但不能让它改变。
这两种方法我都试过:
navigationItem.leftBarButtonItem?.tintColor = UIColor.whiteColor()
navigationItem.backBarButtonItem?.tintColor = UIColor.whiteColor()
但没有变化,它看起来仍然是这样的:
我怎么把那个按钮变成白色?
当前回答
self.navigationController?.navigationBar.tintColor = UIColor.black // to change the all text color in navigation bar or navigation
self.navigationController?.navigationBar.barTintColor = UIColor.white // change the navigation background color
self.navigationController?.navigationBar.titleTextAttributes = [NSForegroundColorAttributeName:UIColor.black] // To change only navigation bar title text color
其他回答
你可以通过点击storyboard上的空白区域并在右边的工具栏中选择“Show the file inspector”来改变全局色调,你会在工具栏的底部看到“global tint”选项。
斯威夫特5.5
更改完整的应用程序主题
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
// Set for app
UINavigationBar.appearance().tintColor = .white
return true
}
更改特定控制器
let navController = UINavigationController.init(rootViewController: yourViewController)
navController.navigationBar.tintColor = .red
present(navController, animated: true, completion: nil)
它将通过-(void)viewDidLoad中的这一行来解决:
self.navigationItem.backBarButtonItem.tintColor = UIColor.whiteColor;
我更喜欢自定义NavigationController而不是设置全局ui,或者放在ViewController中。
这是我的解决方案
class AppNavigationController : UINavigationController {
override func viewDidLoad() {
super.viewDidLoad()
self.delegate = self
}
override func viewWillAppear(_ animated: Bool) {
}
}
extension AppNavigationController : UINavigationControllerDelegate {
func navigationController(_ navigationController: UINavigationController, willShow viewController: UIViewController, animated: Bool) {
let backButtonItem = UIBarButtonItem(
title: " ",
style: UIBarButtonItem.Style.plain,
target: nil,
action: nil)
backButtonItem.tintColor = UIColor.gray
viewController.navigationItem.backBarButtonItem = backButtonItem
}
func navigationController(_ navigationController: UINavigationController, didShow viewController: UIViewController, animated: Bool) {
}
}
此外,如果你使用全局设置ui,如UIBarButtonItem.appearance(),你不需要像EKEventEditViewController,PickerViewController等苹果Api。tintColor = .white
你只有一个选择把你的后退按钮藏起来,用你自己来做。 然后设置它的颜色。
我这样做了:
self.navigationItem.setHidesBackButton(true, animated: true)
let backbtn = UIBarButtonItem(title: "Back", style:UIBarButtonItemStyle.Plain, target: self, action: "backTapped:")
self.navigationItem.leftBarButtonItem = backbtn
self.navigationItem.leftBarButtonItem?.tintColor = UIColor.grayColor()