Swift 导航栏内容不显示
我真的很难让我所有的导航栏元素都显示在我正在创建的应用程序中。正如你所看到的，右边的按钮看起来很好，但是我的标题和后退按钮没有显示出来。如果我将下面我的Swift 导航栏内容不显示,swift,uinavigationcontroller,xcode6,uinavigationbar,Swift,Uinavigationcontroller,Xcode6,Uinavigationbar,我真的很难让我所有的导航栏元素都显示在我正在创建的应用程序中。正如你所看到的，右边的按钮看起来很好，但是我的标题和后退按钮没有显示出来。如果我将下面我的backButtonItem的代码更改为leftBarButton它将正常工作 相信我，当我说我已经试着浏览了好几篇SO文章，即使是在我创作这篇文章的时候，我也在查找相关的文章，但我找不到任何有效的东西 这是我的UINavigationController课程： import UIKit class NavViewController: UINa
backButtonItemleftBarButtonUINavigationControllerimport UIKit
class NavViewController: UINavigationController, UINavigationBarDelegate {
override func viewDidLoad() {
super.viewDidLoad()
}
override func viewDidAppear(animated: Bool) {
super.viewDidAppear(true)
let navigationBar = UINavigationBar(frame: CGRectMake(0, 20, self.view.frame.size.width, 44)) // Offset by 20 pixels vertically to take the status bar into account
navigationBar.barTintColor = UIColor(red: 0.0627, green: 0.4862, blue: 0.0627, alpha: 1)
navigationBar.delegate = self;
// Create a navigation item with a title
let navigationItem = UINavigationItem()
//Create the Back Button
let backButton = UIBarButtonItem(title: "Back", style: UIBarButtonItemStyle.Plain, target: self, action: nil)
backButton.tintColor = UIColor(red: 255, green: 255, blue: 255, alpha: 1)
navigationItem.backBarButtonItem = backButton
//Create the Right Button (Go Home) Button
let rightButton = UIBarButtonItem(title: "Home", style: UIBarButtonItemStyle.Plain, target: self, action: "goHome")
rightButton.tintColor = UIColor(red: 255, green: 255, blue: 255, alpha: 1)
navigationItem.rightBarButtonItem = rightButton
//Change the Navigation Bar Title Color
navigationBar.titleTextAttributes = [NSForegroundColorAttributeName:UIColor.whiteColor()]
// Assign the navigation item to the navigation bar
navigationBar.items = [navigationItem]
// Make the navigation bar a subview of the current view controller
self.view.addSubview(navigationBar)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
import UIKit
@UIApplicationMain class AppDelegate : UIResponder, UIApplicationDelegate {
var window : UIWindow?
var navigationItem = UINavigationItem()
func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
window!.backgroundColor = UIColor(red: 0.2078, green: 0.2078, blue: 0.2078, alpha: 1)
//Create the Back Button
let backButton = UIBarButtonItem(title: "", style: UIBarButtonItemStyle.Plain, target: self, action: nil)
navigationItem.backBarButtonItem = backButton
//Create the Right Button (Go Home) Button
let rightButton = UIBarButtonItem(title: "Home", style: UIBarButtonItemStyle.Plain, target: self, action: "goHome")
navigationItem.rightBarButtonItem = rightButton
// Assign the navigation item to the navigation bar
UINavigationBar.appearance()?.items = [navigationItem]
//Change the Navigation Bar Color
UINavigationBar.appearance()?.titleTextAttributes = [NSForegroundColorAttributeName:UIColor.whiteColor()]
UINavigationBar.appearance()?.tintColor = UIColor.whiteColor()
UINavigationBar.appearance()?.barTintColor = UIColor(red: 0.0627, green: 0.4862, blue: 0.0627, alpha: 1)
return true
}
func goHome() {
var rootViewController = self.window!.rootViewController as UINavigationController
let mainStoryboard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
var homeViewController = mainStoryboard.instantiateViewControllerWithIdentifier("Home") as HomeViewController
rootViewController.popToViewController(homeViewController, animated: true)
}
}
@KyleMassacre，UINavigationController用于从一个控制器导航到另一个控制器 它自动显示后退按钮 在AppDelegation中，您只需要：
//Change the Navigation Bar Color
UINavigationBar.appearance()?.titleTextAttributes = [NSForegroundColorAttributeName:UIColor.whiteColor()]
UINavigationBar.appearance()?.tintColor = UIColor.whiteColor()
UINavigationBar.appearance()?.barTintColor = UIColor(red: 0.0627, green: 0.4862, blue: 0.0627, alpha: 1)
import UIKit
import UIKit
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
let rightButton = UIBarButtonItem(title: "Home", style: UIBarButtonItemStyle.Plain, target: self, action: "goHome")
rightButton.tintColor = UIColor(red: 255, green: 255, blue: 255, alpha: 1)
navigationItem.rightBarButtonItem = rightButton
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
/*
// MARK: - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
// Get the new view controller using segue.destinationViewController.
// Pass the selected object to the new view controller.
}
*/
func goHome() {
// navigation where you want. You can use:
//navigationController?.pushViewController(<#viewController: UIViewController#>, animated: <#Bool#>)
//navigationController?.popToRootViewControllerAnimated(animated: Bool)
//presentViewController(<#viewControllerToPresent: UIViewController#>, animated: <#Bool#>, completion: <#(() -> Void)?##() -> Void#>)
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func setLeftBarButton() {
// Below line will Create Custom leftBarButton.
var backBtn = UIBarButtonItem(title: "First", style: UIBarButtonItemStyle.Bordered, target: self, action: "popBack") as UIBarButtonItem
self.navigationItem.leftBarButtonItem = backBtn
// Below line will Remove default backBarButton.
self.navigationItem.backBarButtonItem = nil;
}
func setRightBarButton() {
let rightBtn: UIBarButtonItem = UIBarButtonItem(title: "Home", style: UIBarButtonItemStyle.Bordered, target: self, action: "goToNext")
self.navigationItem.rightBarButtonItem = rightBtn
}
func popBack() {
self.navigationController?.popViewControllerAnimated(true)
}
func goToNext() {
print("Go to Next View.")
}
override func viewDidLoad（）{
super.viewDidLoad（）
//加载视图后执行任何其他设置。
let rightButton=UIBarButtonim（标题：“家”，风格：UIBarButtonimStyle.Plain，目标：自我，行动：“goHome”）
rightButton.tintColor=UIColor（红色：255，绿色：255，蓝色：255，alpha:1）
navigationItem.rightBarButtonItem=rightButton
}
重写函数didReceiveMemoryWarning（）{
超级。我收到了记忆警告（）
//处置所有可以重新创建的资源。
}
/*
//标记：-导航
//在基于故事板的应用程序中，您通常需要在导航之前做一些准备
覆盖函数prepareforsgue（segue:UIStoryboardSegue，sender:AnyObject？）{
//使用segue.destinationViewController获取新的视图控制器。
//将选定对象传递给新的视图控制器。
}
*/
func goHome（）{
//导航到您想要的位置。您可以使用：
//navigationController？.pushViewController（，动画：）
//导航控制器？.popToRootViewControllerAnimated（动画：Bool）
//presentViewController（，动画：，完成：Void）？##（）->Void#>）
}
@KyleMassacre，UINavigationController用于从一个控制器导航到另一个控制器 它自动显示后退按钮 在AppDelegation中，您只需要：
//Change the Navigation Bar Color
UINavigationBar.appearance()?.titleTextAttributes = [NSForegroundColorAttributeName:UIColor.whiteColor()]
UINavigationBar.appearance()?.tintColor = UIColor.whiteColor()
UINavigationBar.appearance()?.barTintColor = UIColor(red: 0.0627, green: 0.4862, blue: 0.0627, alpha: 1)
import UIKit
import UIKit
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
let rightButton = UIBarButtonItem(title: "Home", style: UIBarButtonItemStyle.Plain, target: self, action: "goHome")
rightButton.tintColor = UIColor(red: 255, green: 255, blue: 255, alpha: 1)
navigationItem.rightBarButtonItem = rightButton
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
/*
// MARK: - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
// Get the new view controller using segue.destinationViewController.
// Pass the selected object to the new view controller.
}
*/
func goHome() {
// navigation where you want. You can use:
//navigationController?.pushViewController(<#viewController: UIViewController#>, animated: <#Bool#>)
//navigationController?.popToRootViewControllerAnimated(animated: Bool)
//presentViewController(<#viewControllerToPresent: UIViewController#>, animated: <#Bool#>, completion: <#(() -> Void)?##() -> Void#>)
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func setLeftBarButton() {
// Below line will Create Custom leftBarButton.
var backBtn = UIBarButtonItem(title: "First", style: UIBarButtonItemStyle.Bordered, target: self, action: "popBack") as UIBarButtonItem
self.navigationItem.leftBarButtonItem = backBtn
// Below line will Remove default backBarButton.
self.navigationItem.backBarButtonItem = nil;
}
func setRightBarButton() {
let rightBtn: UIBarButtonItem = UIBarButtonItem(title: "Home", style: UIBarButtonItemStyle.Bordered, target: self, action: "goToNext")
self.navigationItem.rightBarButtonItem = rightBtn
}
func popBack() {
self.navigationController?.popViewControllerAnimated(true)
}
func goToNext() {
print("Go to Next View.")
}
override func viewDidLoad（）{
super.viewDidLoad（）
//加载视图后执行任何其他设置。
let rightButton=UIBarButtonim（标题：“家”，风格：UIBarButtonimStyle.Plain，目标：自我，行动：“goHome”）
rightButton.tintColor=UIColor（红色：255，绿色：255，蓝色：255，alpha:1）
navigationItem.rightBarButtonItem=rightButton
}
重写函数didReceiveMemoryWarning（）{
超级。我收到了记忆警告（）
//处置所有可以重新创建的资源。
}
/*
//标记：-导航
//在基于故事板的应用程序中，您通常需要在导航之前做一些准备
覆盖函数prepareforsgue（segue:UIStoryboardSegue，sender:AnyObject？）{
//使用segue.destinationViewController获取新的视图控制器。
//将选定对象传递给新的视图控制器。
}
*/
func goHome（）{
//导航到您想要的位置。您可以使用：
//navigationController？.pushViewController（，动画：）
//导航控制器？.popToRootViewControllerAnimated（动画：Bool）
//presentViewController（，动画：，完成：Void）？##（）->Void#>）
}
@KyleMassacre，UINavigationController用于从一个控制器导航到另一个控制器 它自动显示后退按钮 在AppDelegation中，您只需要：
//Change the Navigation Bar Color
UINavigationBar.appearance()?.titleTextAttributes = [NSForegroundColorAttributeName:UIColor.whiteColor()]
UINavigationBar.appearance()?.tintColor = UIColor.whiteColor()
UINavigationBar.appearance()?.barTintColor = UIColor(red: 0.0627, green: 0.4862, blue: 0.0627, alpha: 1)
import UIKit
import UIKit
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
let rightButton = UIBarButtonItem(title: "Home", style: UIBarButtonItemStyle.Plain, target: self, action: "goHome")
rightButton.tintColor = UIColor(red: 255, green: 255, blue: 255, alpha: 1)
navigationItem.rightBarButtonItem = rightButton
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
/*
// MARK: - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
// Get the new view controller using segue.destinationViewController.
// Pass the selected object to the new view controller.
}
*/
func goHome() {
// navigation where you want. You can use:
//navigationController?.pushViewController(<#viewController: UIViewController#>, animated: <#Bool#>)
//navigationController?.popToRootViewControllerAnimated(animated: Bool)
//presentViewController(<#viewControllerToPresent: UIViewController#>, animated: <#Bool#>, completion: <#(() -> Void)?##() -> Void#>)
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func setLeftBarButton() {
// Below line will Create Custom leftBarButton.
var backBtn = UIBarButtonItem(title: "First", style: UIBarButtonItemStyle.Bordered, target: self, action: "popBack") as UIBarButtonItem
self.navigationItem.leftBarButtonItem = backBtn
// Below line will Remove default backBarButton.
self.navigationItem.backBarButtonItem = nil;
}
func setRightBarButton() {
let rightBtn: UIBarButtonItem = UIBarButtonItem(title: "Home", style: UIBarButtonItemStyle.Bordered, target: self, action: "goToNext")
self.navigationItem.rightBarButtonItem = rightBtn
}
func popBack() {
self.navigationController?.popViewControllerAnimated(true)
}
func goToNext() {
print("Go to Next View.")
}
override func viewDidLoad（）{
super.viewDidLoad（）
//加载视图后执行任何其他设置。
let rightButton=UIBarButtonim（标题：“家”，风格：UIBarButtonimStyle.Plain，目标：自我，行动：“goHome”）
rightButton.tintColor=UIColor（红色：255，绿色：255，蓝色：255，alpha:1）
navigationItem.rightBarButtonItem=rightButton
}
重写函数didReceiveMemoryWarning（）{
超级。我收到了记忆警告（）
//处置所有可以重新创建的资源。
}
/*
//标记：-导航
//在基于故事板的应用程序中，您通常需要在导航之前做一些准备
覆盖函数prepareforsgue（segue:UIStoryboardSegue，sender:AnyObject？）{
//使用segue.destinationViewController获取新的视图控制器。
//将选定对象传递给新的视图控制器。
}
*/
func goHome（）{
//导航到您想要的位置。您可以使用：
//navigationController？.pushViewController（，动画：）
//导航控制器？.popToRootViewControllerAnimated（动画：Bool）
//presentViewController（，动画：，完成：Void）？##（）->Void#>）
}
@KyleMassacre，UINavigationController用于从一个控制器导航到另一个控制器 它自动显示后退按钮 在AppDelegation中，您只需要：
//Change the Navigation Bar Color
UINavigationBar.appearance()?.titleTextAttributes = [NSForegroundColorAttributeName:UIColor.whiteColor()]
UINavigationBar.appearance()?.tintColor = UIColor.whiteColor()
UINavigationBar.appearance()?.barTintColor = UIColor(red: 0.0627, green: 0.4862, blue: 0.0627, alpha: 1)