xml DialogFragment进入/退出动画

Posted 2021-05-16

// example courtesy of http://adilatwork.blogspot.com/2012/11/android-dialogfragment-enter-and-exit.html
// file location: src/main/java/com/example/

@Override
public void onStart() {
    super.onStart();

    // safety check
    if (getDialog() == null) {
        return;
    }

    // set the animations to use on showing and hiding the dialog
    getDialog().getWindow().setWindowAnimations(
        R.style.dialog_animation_fade);
    // alternative way of doing it
    //getDialog().getWindow().getAttributes().
    //    windowAnimations = R.style.dialog_animation_fade;

    // ... other stuff you want to do in your onStart() method
}

<?xml version="1.0" encoding="utf-8"?>
<!--
  courtesy of http://adilatwork.blogspot.com/2012/11/android-dialogfragment-enter-and-exit.html
  file location: src/main/res/anim
-->
<alpha
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:interpolator="@android:anim/accelerate_interpolator"
  android:fromAlpha="0.0"
  android:toAlpha="1.0"
  android:duration="400" />

<?xml version="1.0" encoding="utf-8"?>
<!--
  courtesy of http://adilatwork.blogspot.com/2012/11/android-dialogfragment-enter-and-exit.html
  file location: src/main/res/anim
-->
<alpha
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:interpolator="@android:anim/decelerate_interpolator"
  android:fromAlpha="1.0"
  android:toAlpha="0.0"
  android:duration="400" />

<?xml version="1.0" encoding="utf-8"?>
<!--
  courtesy of http://adilatwork.blogspot.com/2012/11/android-dialogfragment-enter-and-exit.html
  file location: src/main/res/values
-->
<style
  name="dialog_animation_fade" >
  <item name="android:windowEnterAnimation">@anim/fade_in_dialog</item>
  <item name="android:windowExitAnimation">@anim/fade_out_dialog</item>
</style>