【问题标题】:Cannot use Gifu Pod in my app "GIF doesn't appear"无法在我的应用程序中使用 Gifu Pod “GIF 不出现”
【发布时间】:2021-05-16 22:29:40
【问题描述】:

我一直在我的代码中使用Gifu pod,但它不能正常工作,gif 根本没有出现。

启动屏幕图片:

启动屏幕代码:

import UIKit
import Gifu

class LaunchScreenViewController: UIViewController {


@IBOutlet weak var imageViewGIF: GIFImageView!

override func viewDidLoad() {
    super.viewDidLoad()
    self.navigationController?.navigationBar.isHidden = true
    animate()
    
}


func animate() {
    imageViewGIF.prepareForAnimation(withGIFNamed: "animatedTick.gif", loopCount: 1)
    self.imageViewGIF.animate(withGIFNamed: "mugen")
    DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) {
        self.imageViewGIF.startAnimatingGIF()
        DispatchQueue.global().asyncAfter(deadline: .now() + 0.5 + self.imageViewGIF.gifLoopDuration, execute: {
            
        })
        let loginViewController = self.storyboard!.instantiateViewController(identifier: "LoginViewController")
        self.navigationController?.pushViewController(loginViewController, animated: true)
    }
    
}
}

UIImageViewExtension.swift 代码

import UIKit
import Gifu

extension UIImageView: GIFAnimatable {
  private struct AssociatedKeys {
    static var AnimatorKey = "gifu.animator.key"
  }

  override open func display(_ layer: CALayer) {
    updateImageIfNeeded()
  }

  public var animator: Animator? {
    get {
      guard let animator = objc_getAssociatedObject(self, &AssociatedKeys.AnimatorKey) as? Animator else {
        let animator = Animator(withDelegate: self)
        self.animator = animator
        return animator
      }

      return animator
    }

    set {
      objc_setAssociatedObject(self, &AssociatedKeys.AnimatorKey, newValue as Animator?, .OBJC_ASSOCIATION_RETAIN_NONATOMIC)
    }
  }
}

请注意,主 LaunchScreen 文件仍然相同,我没有更改其中的任何内容,我只是尝试创建自定义文件。

【问题讨论】:

  • 澄清一下,这个视图控制器是你的主故事板的入口点场景?你设置断点了吗? viewDidLoad 甚至被调用了吗?
  • 是的,它被调用了,它显示了 imageView 但没有显示其中的 GIF

标签: ios xcode swift5 animated-gif ios-animations


【解决方案1】:

尝试仅使用 self.imageViewGIF.animate(withGIFNamed: "mugen")

【讨论】:

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