Question

我有一个UITabBarController，有5个标签。

我想在每个标签下放置一个GIF文件。

我使用3rd party API (UIImage extension) called SwiftGif来使用gif，所以问题也可以这样问：

＆＃34;如何将UIImage作为UITabBar＆＃34;

的背景？

但我想更具体地帮助你更好地理解。

Answer 1

尝试使用此更改tabBar的背景self.tabBarController?.tabBar.backgroundImage = UIImageView(image: UIImage.gifWithName("yourGifName"))请记住，此语法来自Swift 3 - 如果您使用的是Swift 2，则可能需要稍微更改一下

Answer 2

快捷键4： 标签栏的类，然后设置如下图像：

import UIKit
import SwiftGifOrigin  ///to install that pod:  https://github.com/bahlo/SwiftGifCreate 

class TabbarVC: UITabBarController {

    override func viewDidLoad() {
        super.viewDidLoad()


        let myTabBarItem1 = (self.tabBar.items?[0])! as UITabBarItem
        myTabBarItem1.image = UIImage(named: "your unselected image")?.withRenderingMode(UIImage.RenderingMode.alwaysOriginal)
        myTabBarItem1.selectedImage = UIImage.gif(asset: "your gif")?.withRenderingMode(UIImage.RenderingMode.alwaysOriginal)
        myTabBarItem1.title = ""
        myTabBarItem1.imageInsets = UIEdgeInsets(top: 6, left: 0, bottom: -6, right: 0)

    }

}

Answer 3

这是我的解决方案，只需在Tabbar类中为所选图像设置gif。

 import UIKit

class TabbarVC: UITabBarController {

  override func viewDidLoad() {
    super.viewDidLoad()

    //Set Selected image for all items, I'm doing only for item 1
    let myTabBarItem1 = (self.tabBar.items?[0])! as UITabBarItem
    myTabBarItem1.selectedImage = UIImage.gifImageWithName("image name")

  }

}

这是从Gif加载URL/Bundle/Name的扩展名。

extension UIImage {

  public class func gifImageWithData(_ data: Data) -> UIImage? {
      guard let source = CGImageSourceCreateWithData(data as CFData, nil) else {
          print("image doesn't exist")
          return nil
      }
      return UIImage.animatedImageWithSource(source)
  }

  public class func gifImageWithURL(_ gifUrl:String) -> UIImage? {
      guard let bundleURL:URL = URL(string: gifUrl)
          else {
              print("image named \"\(gifUrl)\" doesn't exist")
              return nil
      }
      guard let imageData = try? Data(contentsOf: bundleURL) else {
          print("image named \"\(gifUrl)\" into NSData")
          return nil
      }
      return gifImageWithData(imageData)
  }

  public class func gifImageWithName(_ name: String) -> UIImage? {
      guard let bundleURL = Bundle.main
        .url(forResource: name, withExtension: "gif") else {
              print("SwiftGif: This image named \"\(name)\" does not exist")
              return nil
      }
      guard let imageData = try? Data(contentsOf: bundleURL) else {
          print("SwiftGif: Cannot turn image named \"\(name)\" into NSData")
          return nil
      }

      return gifImageWithData(imageData)
  }

在UITabBar项下添加gif动画

3 个答案: