我用的是什么:

activity_stay.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">

    <translate
        android:duration="@android:integer/config_longAnimTime"
        android:fromYDelta="0%p"
        android:toYDelta="0%p" />

</set>

activity_slide_to_bottom.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" android:interpolator="@android:anim/accelerate_decelerate_interpolator">

    <translate
        android:duration="@android:integer/config_longAnimTime"
        android:fromYDelta="0"
        android:toYDelta="100%p" />

</set>

activity_slide_from_bottom.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" android:interpolator="@android:anim/accelerate_decelerate_interpolator">

    <translate
        android:duration="@android:integer/config_longAnimTime"
        android:fromYDelta="100%p"
        android:toYDelta="0" />

</set>

启动新 Activity :

startActivity(NewActivity.getIntent(this))
overridePendingTransition(R.anim.activity_slide_from_bottom, R.anim.activity_stay)

新 Activity 完成():

finish()
overridePendingTransition(R.anim.activity_stay, R.anim.activity_slide_to_bottom)

当 NewActivity 启动时，OldActivity 消失 - 我看到空白屏幕，NewActivity 滑到顶部。但是，我需要的是我的 NewActivity 在启动时滑动到 OldActivity 内容之上。我怎样才能做到这一点？

UPD:当我出于某些原因完成我的 NewActivity 时，所有动画都完美执行:NewActivity 滑动到底部，OldActivity 内容出现在 NewActivity 内容下方。

最佳答案

您可以使用以下代码实现动画:

bottom_up.xml :

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <translate
        android:duration="1000"
        android:fromYDelta="90%"
        android:toYDelta="0" />
</set>

bottom_down.xml :

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <translate
        android:duration="1500"
        android:fromYDelta="5"
        android:toYDelta="90%" />
</set>

nothing.xml :

<?xml version="1.0" encoding="utf-8"?>
<translate xmlns:android="http://schemas.android.com/apk/res/android"
    android:duration="1000"
    android:fromYDelta="0%p"
    android:toYDelta="0%p" />

开始第二个 Activity :

Intent intent = new Intent(MainActivity.this, SecondActivity.class);
startActivity(intent);
overridePendingTransition(R.anim.bottom_up, R.anim.nothing);

第二个 Activity 结束时:

@Override
public void onBackPressed() {
    super.onBackPressed();
    overridePendingTransition(R.anim.nothing, R.anim.bottom_down);
}

文档:

Start an activity using an animation Activity transitions in material design apps provide visual connections between different states through motion and transformations between common elements. You can specify custom animations for enter and exit transitions and for transitions of shared elements between activities.

An enter transition determines how views in an activity enter the scene. For example, in the explode enter transition, the views enter the scene from the outside and fly in towards the center of the screen. An exit transition determines how views in an activity exit the scene. For example, in the explode exit transition, the views exit the scene away from the center.

Specify custom transitions First, enable window content transitions with the android:windowActivityTransitions attribute when you define a style that inherits from the material theme. You can also specify enter, exit, and shared element transitions in your style definition:

<style name="BaseAppTheme" parent="android:Theme.Material">   <!-- enable window content transitions -->   
<item name="android:windowActivityTransitions">true</item>
  <!-- specify enter and exit transitions -->   
<item name="android:windowEnterTransition">@transition/explode</item>   
<item name="android:windowExitTransition">@transition/explode</item> </style>

请检查文档。 here

尽情享受吧!

关于android - Activity 动画从底部滑动，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/49571186/