Android_anim_Transparency.xml

<!-- Transparency 0% to 100% -->

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

    <alpha
        android:duration="@android:integer/config_longAnimTime"
        android:fromAlpha="0.0"
        android:toAlpha="1.0"
        android:interpolator="@android:anim/accelerate_interpolator" />
</set>

your_Activity.java

Animation animation = AnimationUtils.loadAnimation(your_Activity.getApplicationContext(),R.anim.animation_xml_file);
AnyView target_view = (AnyView)findViewById(R.id.target_view_id);

target_view.startAnimation(animation);

// animation, your_Activity, animation_xml_file, AnyView, target_view, target_view_id