Question

我想创建一个类似于附加图像中的导航栏。

导航栏的标题将是图像和文字的组合。

是否应该按照最佳做法进行？
怎么做？

Screen shot of mockup of nav bar with image and text

Answer 1

作为this answer shows，最简单的解决方案是将文字添加到图片中，然后将该图片添加到导航栏中，如下所示：

var image = UIImage(named: "logo.png")
self.navigationItem.titleView = UIImageView(image: image)

但是，如果您必须单独添加文本和图像（例如，在本地化的情况下），您可以将导航栏的标题视图设置为包含图像和文本，方法是将它们添加到{{ 1}}并将UIView的标题视图设置为navigationItem，例如（假设导航栏是导航控件的一部分）：

UIView

Answer 2

使用水平exports.handler = (event, context, callback) => { const request = event.Records[0].cf.request; const headers = request.headers; headers['custom_header'] = [{ key: 'custom_header', value: 'custom_header' }]; return callback(null, request); }应该更干净，更容易

请将下一个扩展名添加到UIStackView

UIViewController

然后在您的viewController中使用它：

extension UIViewController {
    func setTitle(_ title: String, andImage image: UIImage) {
        let titleLbl = UILabel()
        titleLbl.text = title
        titleLbl.textColor = UIColor.white
        titleLbl.font = UIFont.systemFont(ofSize: 20.0, weight: .bold)
        let imageView = UIImageView(image: image)
        let titleView = UIStackView(arrangedSubviews: [imageView, titleLbl])
        titleView.axis = .horizontal
        titleView.spacing = 10.0
        navigationItem.titleView = titleView
    }
}

（这会将文本和图标对齐到中心，如果要使文本居中并且图标在左侧，只需添加一个空白setTitle("yourTitle", andImage: UIImage(named: "yourImage"))，宽度约束等于图标宽度）

Answer 3

这是Swift 4的2美分，因为接受的答案对我不起作用（主要是在屏幕外）：

// .. in ViewController
var navBar = CustomTitleView()

override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)


    // =================== navBar =====================
    navBar.loadWith(title: "Budget Overview", leftImage: Images.pie_chart)
    self.navigationItem.titleView = navBar

}

class CustomTitleView: UIView
{

var title_label = CustomLabel()
var left_imageView = UIImageView()

override init(frame: CGRect){
    super.init(frame: frame)
    setup()
}

required init?(coder aDecoder: NSCoder){
    super.init(coder: aDecoder)
    setup()
}

func setup(){
    self.addSubview(title_label)
    self.addSubview(left_imageView)

}

func loadWith(title: String, leftImage: UIImage?)
{

    //self.backgroundColor = .yellow

    // =================== title_label ==================
    //title_label.backgroundColor = .blue
    title_label.text = title
    title_label.font = UIFont.systemFont(ofSize: FontManager.fontSize + 5)


    // =================== imageView ===================
    left_imageView.image = leftImage

    setupFrames()
}

func setupFrames()
{

    let height: CGFloat = Navigation.topViewController()?.navigationController?.navigationBar.frame.height ?? 44
    let image_size: CGFloat = height * 0.8

    left_imageView.frame = CGRect(x: 0,
                                  y: (height - image_size) / 2,
                                  width: (left_imageView.image == nil) ? 0 : image_size,
                                  height: image_size)

    let titleWidth: CGFloat = title_label.intrinsicContentSize.width + 10
    title_label.frame = CGRect(x: left_imageView.frame.maxX + 5,
                               y: 0,
                               width: titleWidth,
                               height: height)



    contentWidth = Int(left_imageView.frame.width)
    self.frame = CGRect(x: 0, y: 0, width: CGFloat(contentWidth), height: height)
}


var contentWidth: Int = 0 //if its CGFloat, it infinitely calls layoutSubviews(), changing franction of a width 
override func layoutSubviews() {
    super.layoutSubviews()

    self.frame.size.width = CGFloat(contentWidth)

}

}

Answer 4

Swift 4.2 + Interface Builder解决方案

作为Lyndsey Scott的answer的后续，您还可以在Interface Builder中创建一个UIView .xib，用它来布置标题和图像，然后通过@IBOutlet实时更新。这对于动态内容，国际化，可维护性等很有用。

使用UIView出口创建一个UILabel子类，并将新的.xib分配给该类：

import UIKit

class FolderTitleView: UIView {

    @IBOutlet weak var title : UILabel!

    /// Create an instance of the class from its .xib
    class func instanceFromNib() -> FolderTitleView {
        return UINib(nibName: "FolderTitleView", bundle: nil).instantiate(withOwner: nil, options: nil)[0] as! FolderTitleView
    }
}

将标签连接到.xib中的插座（在我的示例中为title），然后在UIViewController中：

/// Reference to the title view
var folderTitleView : FolderTitleView?

override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
    // Set the screen title to match the active folder
    updateTitle()    
}

/// Updates the title of the navigation controller.
func updateTitle() {
    self.title = ""
    if folderTitleView == nil {
        folderTitleView = FolderTitleView.instanceFromNib()
        self.navigationItem.titleView = folderTitleView
    }
    folderTitleView!.title.text = "Listening"
    folderTitleView!.layoutIfNeeded()
}

这会产生一个很好的自我居中标题栏，其中带有嵌入式图像，您可以轻松地从代码中进行更新。

Answer 5

//为我工作

创建视图并设置框架
现在在视图中添加图像并设置框架
添加图像后，在同一视图中添加标签并设置框架

在将图像和标签添加到视图后，将相同的视图添加到navigationItem

let navigationView = UIView（frame：CGRect（x：0，y：0，width：50，height：55））

let labell : UILabel = UILabel(frame: CGRect(x: -38, y: 25, width: 150, height: 25))
labell.text = "Your text"
labell.textColor = UIColor.black
labell.font = UIFont.boldSystemFont(ofSize: 10)
navigationView.addSubview(labell)

let image : UIImage = UIImage(named: ValidationMessage.headerLogoName)!
let imageView = UIImageView(frame: CGRect(x: -20, y: 0, width: 100, height: 30))
imageView.contentMode = .scaleAspectFit
imageView.image = image
//navigationItem.titleView = imageView

navigationView.addSubview(imageView)

navigationItem.titleView = navigationView

iOS - 在导航栏的标题中添加图像和文本

5 个答案: