UIBarButtonItem在导航栏编程？

我一直在寻找这个解决scheme一段时间，但没有得到任何。 例如一个解决scheme是

self.navigationItem.setRightBarButtonItem(UIBarButtonItem(barButtonSystemItem: .Stop, target: self, action: nil), animated: true) 

这段代码将添加一个“停止”图像的button。 就像这样，还有其他的解决scheme，“search”，“刷新”等等。但是，如果我想用我想要的图像以编程方式添加button怎么办？

Answer 1

不设置button框的自定义button图像：

你可以使用init(image: UIImage?, style: UIBarButtonItemStyle, target: Any?, action: Selector?)来使用指定的图像和其他属性初始化一个新项目。

 let button1 = UIBarButtonItem(image: UIImage(named: "imagename"), style: .plain, target: self, action: Selector("action")) // action:#selector(Class.MethodName) for swift 3 self.navigationItem.rightBarButtonItem = button1 

检查这个苹果文件。 参考

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UIBarButtonItem自定义button图像使用button框架

对于Swift 3.0

  let btn1 = UIButton(type: .custom) btn1.setImage(UIImage(named: "imagename"), for: .normal) btn1.frame = CGRect(x: 0, y: 0, width: 30, height: 30) btn1.addTarget(self, action: #selector(Class.Methodname), for: .touchUpInside) let item1 = UIBarButtonItem(customView: btn1) let btn2 = UIButton(type: .custom) btn2.setImage(UIImage(named: "imagename"), for: .normal) btn2.frame = CGRect(x: 0, y: 0, width: 30, height: 30) btn2.addTarget(self, action: #selector(Class.MethodName), for: .touchUpInside) let item2 = UIBarButtonItem(customView: btn2) self.navigationItem.setRightBarButtonItems([item1,item2], animated: true) 

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对于Swift 2.0及更高版本

 let btnName = UIButton() btnName.setImage(UIImage(named: "imagename"), forState: .Normal) btnName.frame = CGRectMake(0, 0, 30, 30) btnName.addTarget(self, action: Selector("action"), forControlEvents: .TouchUpInside) //.... Set Right/Left Bar Button item let rightBarButton = UIBarButtonItem() rightBarButton.customView = btnName self.navigationItem.rightBarButtonItem = rightBarButton 

或者简单地使用init（customView :)就好

  let rightBarButton = UIBarButtonItem(customView: btnName) self.navigationItem.rightBarButtonItem = rightBarButton 

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对于系统UIBarButtonItem

 let camera = UIBarButtonItem(barButtonSystemItem: .Camera, target: self, action: Selector("btnOpenCamera")) self.navigationItem.rightBarButtonItem = camera 

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对于设置多于一个的项目，使用rightBarButtonItems或左侧的leftBarButtonItems

 let btn1 = UIButton() btn1.setImage(UIImage(named: "img1"), forState: .Normal) btn1.frame = CGRectMake(0, 0, 30, 30) btn1.addTarget(self, action: Selector("action1:"), forControlEvents: .TouchUpInside) let item1 = UIBarButtonItem() item1.customView = btn1 let btn2 = UIButton() btn2.setImage(UIImage(named: "img2"), forState: .Normal) btn2.frame = CGRectMake(0, 0, 30, 30) btn2.addTarget(self, action: Selector("action2:"), forControlEvents: .TouchUpInside) let item2 = UIBarButtonItem() item2.customView = btn2 self.navigationItem.rightBarButtonItems = [item1,item2] 

使用setLeftBarButtonItem或setRightBarButtonItem

 let btn1 = UIButton() btn1.setImage(UIImage(named: "img1"), forState: .Normal) btn1.frame = CGRectMake(0, 0, 30, 30) btn1.addTarget(self, action: Selector("action1:"), forControlEvents: .TouchUpInside) self.navigationItem.setLeftBarButtonItem(UIBarButtonItem(customView: btn1), animated: true); 

对于swift> = 2.2操作应该是#selector(Class.MethodName) …例如btnName.addTarget(self, action: #selector(Class.MethodName), forControlEvents: .TouchUpInside)

Answer 2

只需使用customView设置UIBarButtonItem即可

例如：

  var leftNavBarButton = UIBarButtonItem(customView:yourButton) self.navigationItem.leftBarButtonItem = leftNavBarButton 

或者使用setFunction ：

  self.navigationItem.setLeftBarButtonItem(UIBarButtonItem(customView: yourButton), animated: true); 

Answer 3

我只是偶然发现了这个问题，下面是Swift 3和iOS 10的更新：

 let testUIBarButtonItem = UIBarButtonItem(image: UIImage(named: "test.png"), style: .plain, target: self, action: nil) self.navigationItem.rightBarButtonItem = testUIBarButtonItem 

这肯定比使用所有属性创buildUIButton快得多，然后将customView添加到UIBarButtonItem。

如果要将图像的颜色从默认蓝色更改为白色，则可以随时更改色调颜色：

 test.tintColor = UIColor.white() 

PS你应该明显地改变你的应用程序的select器等:)

Answer 4

在快捷键3中进行操作：

 let testUIBarButtonItem = UIBarButtonItem(image: UIImage(named: "test.png"), style: .plain, target: self, action: #selector(ViewController.clickButton)) self.navigationItem.rightBarButtonItem = testUIBarButtonItem func clickButton(){ print("button click") } 

Answer 5

我有同样的问题，我已经阅读另一个话题的答案，然后我解决另一个类似的方式。 我不知道哪个更有效。 类似的问题

 //play button @IBAction func startIt(sender: AnyObject) { startThrough(); }; //play button func startThrough() { timer = NSTimer.scheduledTimerWithTimeInterval(1, target: self, selector: Selector("updateTime"), userInfo: nil, repeats: true); let pauseButton = UIBarButtonItem(barButtonSystemItem: .Pause, target: self, action: "pauseIt"); self.toolBarIt.items?.removeLast(); self.toolBarIt.items?.append( pauseButton ); } func pauseIt() { timer.invalidate(); let play = UIBarButtonItem(barButtonSystemItem: .Play, target: self, action: "startThrough"); self.toolBarIt.items?.removeLast(); self.toolBarIt.items?.append( play ); } 

Answer 6

用原始图像设置LeftBarButton。

 let menuButton = UIBarButtonItem(image: UIImage(named: "imagename").withRenderingMode(.alwaysOriginal), style: .plain, target: self, action: #selector(classname.functionname)) self.navigationItem.leftBarButtonItem = menuButton 

Answer 7

 func viewDidLoad(){ let homeBtn: UIButton = UIButton(type: UIButtonType.custom) homeBtn.setImage(UIImage(named: "Home.png"), for: []) homeBtn.addTarget(self, action: #selector(homeAction), for: UIControlEvents.touchUpInside) homeBtn.frame = CGRect(x: 0, y: 0, width: 30, height: 30) let homeButton = UIBarButtonItem(customView: homeBtn) let backBtn: UIButton = UIButton(type: UIButtonType.custom) backBtn.setImage(UIImage(named: "back.png"), for: []) backBtn.addTarget(self, action: #selector(backAction), for: UIControlEvents.touchUpInside) backBtn.frame = CGRect(x: -10, y: 0, width: 30, height: 30) let backButton = UIBarButtonItem(customView: backBtn) self.navigationItem.setLeftBarButtonItems([backButton,homeButton], animated: true) } }