如何在android中从左到右应用淡出动画

我正在尝试将淡出动画制作成

视图

，但我不想要标准的。我希望淡出从左到右（或从右到左）开始。你知道怎么做吗？我真的没有找到任何关于android的东西。这是我目前的代码：

val fadeOut = AlphaAnimation(1f, 0f)
            fadeOut.interpolator = AccelerateInterpolator()
            fadeOut.duration = 3000L

            fadeOut.setAnimationListener(object : Animation.AnimationListener {
                override fun onAnimationStart(animation: Animation) {

                }

                override fun onAnimationEnd(animation: Animation) {
                   mTextView.visibility = View.VISIBLE
                }

                override fun onAnimationRepeat(animation: Animation) {}
            })

            mTextView.startAnimation(fadeOut)

试试这个：

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:fillAfter="true">
    <alpha
        android:duration="1000"
        android:fromAlpha="0.0"
        android:interpolator="@android:anim/accelerate_interpolator"
        android:toAlpha="1.0" />
    <translate
        android:fromXDelta="100%p" android:toXDelta="0"
        android:duration="500" />
</set>

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据我所知，听起来你想要的是显示动画，而不是淡入/淡出动画。您最好编写自己的展示

动画

，但如果您准备接受更简单的破解，那么您可以使用

ViewAnimationUtils

中提供的圆形展示动画。只需从远离左/右的地方开始循环，使循环分隔缝感觉像线性分隔缝

final View myView = findViewById(R.id.animatedImageView);

int cx = myView.getMeasuredWidth() * 2;
int cy = myView.getMeasuredHeight() / 2;
int finalRadius = (int) Math.hypot(myView.getWidth()*2, myView.getHeight());

Animator anim;
// for reveal
anim = ViewAnimationUtils.createCircularReveal(myView, cx, cy, 0, finalRadius);
// for hiding
// anim = ViewAnimationUtils.createCircularReveal(myView, cx, cy, finalRadius, 0);

// Do note that you'll need to factor in the 'reveal' time taken in by the extra empty space.
// You could probably get around this by creating your own interpolator, 
// but in which case, you might as well just create your own reveal animation.
anim.setDuration(3000);

// make the view visible and start the animation
myView.setVisibility(View.VISIBLE);
anim.start();

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检查这个链接是的，问题是我想让它从左到右淡出，而不是滑动它