Question

我正在尝试在我的项目中使用彩票文件，但我尝试了许多方法，但没有人可以使用。什么都没出现在下面的代码中，我尝试了两种方式1- lottieAnimation()，2-`setupAnimation（）以及通过UIView进行尝试，希望您能帮助您了解问题所在并采取正确的步骤来成功使用它。

import UIKit
import Lottie

class BonusVC: UIViewController {

    @IBOutlet weak var containerAnim: UIView!
    var animation : AnimationView?
    let animationView = AnimationView()
    override func viewDidLoad() {
        super.viewDidLoad()
        lottieAnimation()
    }
    override func viewDidAppear(_ animated: Bool) {
        super.viewDidAppear(animated)
        lottieAnimation()
        //setupAnimation()
    }


    func setupAnimation() {
        animation = AnimationView(name: "wallet")
        animation?.frame = self.containerAnim.frame
        self.containerAnim.addSubview(animation!)
        animation?.loopMode = .autoReverse
        animation?.contentMode = .scaleAspectFit
        animation?.play()
    }

    func lottieAnimation() {
        let animation = Animation.named("wifi", subdirectory: "LottieAnimation")
        animationView.animation = animation
        animationView.contentMode = .scaleAspectFit
        view.addSubview(animationView)

        animationView.backgroundBehavior = .pauseAndRestore
        animationView.translatesAutoresizingMaskIntoConstraints = false
        animationView.topAnchor.constraint(equalTo: view.layoutMarginsGuide.topAnchor).isActive = true
        animationView.leadingAnchor.constraint(equalTo: view.leadingAnchor).isActive = true

        animationView.bottomAnchor.constraint(equalTo: view.bottomAnchor, constant: -12).isActive = true
        animationView.trailingAnchor.constraint(equalTo: view.trailingAnchor).isActive = true
        animationView.setContentCompressionResistancePriority(.fittingSizeLevel, for: .horizontal)
        animationView.play()
    }
}

Answer 1

我发现从简单的概念验证入手是很有帮助的，以确保一切正常，然后从那里进行自定义。使用示例Lottie文件之一尝试以下代码：

import UIKit
import Lottie

class ViewController: UIViewController {

    let testAnimation = "bb8"

    override func viewDidLoad() {
        super.viewDidLoad()

    }

    @IBAction func showAnimation(_ sender: UIButton) {
        let animationView = AnimationView()
        let animation = Animation.named(testAnimation)
        animationView.frame = CGRect(x: 0, y: 100, width: self.view.frame.size.width, height: 350)
        animationView.contentMode = .scaleAspectFit
        animationView.animation = animation
        animationView.loopMode = .loop

        self.view.addSubview(animationView)

        animationView.play()
    }
}

bb8是JSON文件的名称。我正在使用Swift Package Manager引入Lottie-ios，但这也适用于CocoaPods。

彩票文件未出现

1 个答案: