java fadein_用Java淡入淡出Android动画

作者：知新_RL | 2024-06-02 01:25:00

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android animation fadein

弄清楚我自己的问题。该解决方案最终基于插值器。

Animation fadeIn = new AlphaAnimation(0, 1);

fadeIn.setInterpolator(new DecelerateInterpolator()); //add this

fadeIn.setDuration(1000);

Animation fadeOut = new AlphaAnimation(1, 0);

fadeOut.setInterpolator(new AccelerateInterpolator()); //and this

fadeOut.setStartOffset(1000);

fadeOut.setDuration(1000);

AnimationSet animation = new AnimationSet(false); //change to false

animation.addAnimation(fadeIn);

animation.addAnimation(fadeOut);

this.setAnimation(animation);

如果您使用的是Kotlin

val fadeIn = AlphaAnimation(0f, 1f)

fadeIn.interpolator = DecelerateInterpolator() //add this

fadeIn.duration = 1000

val fadeOut = AlphaAnimation(1f, 0f)

fadeOut.interpolator = AccelerateInterpolator() //and this

fadeOut.startOffset = 1000

fadeOut.duration = 1000

val animation = AnimationSet(false) //change to false

animation.addAnimation(fadeIn)

animation.addAnimation(fadeOut)

this.setAnimation(animation)

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