android - 暂停和恢复 Lottie 动画

Question

我正在实现一个 Lottie 动画，整个动画效果很好！但是，我想添加一些代码，在 30 帧后暂停动画，然后我可以在一定时间后恢复。这是到目前为止的代码：

animationView.playAnimation(0, 30)
animationView.addAnimatorListener(object : Animator.AnimatorListener {
   override fun onAnimationEnd(animation: Animator) {
      if (isLoading == false) {
         //Everything has loaded. Continue Animation 
         
         //This line has no effect. The animation does not continue
         animationView.playAnimation(30, 60)
         //Resuming the animation just makes the animation disappear
         //animation.resume()
      }
 }

Answer 1

您可以做的是使用LottieAnimationView 中的进度、线程和标志，这将允许您在某个进度处暂停，并在您需要再次播放动画时准确恢复。

我创建了以下示例：

animationView.playAnimation()
animationView.loop(false)

isAnimating = true // Setup your flag

thread {
    while (isAnimating){ // Loop that checks the progress of your animation
        if (animationView.progress >= 0.5f){// If animation reaches 50%
            runOnUiThread {
                animationView.pauseAnimation()// Pause Animation
            }
            Thread.sleep(5000) // Pause for 5 seconds
            runOnUiThread {
                animationView.playAnimation(0.5f,1f) // Resume your animation from 50% to 100%
            }
            isAnimating = false
        }
        if(animationView.progress >= 1f){ // If animation reaches 100% stop animation
            runOnUiThread {
                animationView.cancelAnimation()
                isAnimating = false
            }
        }
    }
}

Answer 2

animationView.setMinAndMaxProgress(0.0f, 0.5f);//set 50% animation //lottie version 2.7.0

Answer 3

final Handler handler = new Handler();
handler.postDelayed(new Runnable() {
    @Override
    public void run() {
        animationView.pauseAnimation();
    }
}, 8000); // after 8s animation will pause/stop/cancel/resume.