zcash-android-wallet-zcon1/zcash-android-wallet-app/app/src/main/res/anim/nav_default_pop_enter_anim.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <alpha
        android:fromAlpha="0.0"
        android:toAlpha="1.0"
        android:duration="@integer/nav_default_quick_transition_duration" />
</set>