1<?xml version="1.0" encoding="utf-8"?>
2<selector xmlns:android="http://schemas.android.com/apk/res/android">
3  <item android:state_pressed="true" android:state_enabled="true">
4    <set>
5      <objectAnimator android:propertyName="translationZ"
6        android:duration="100"
7        android:valueTo="4dp"
8        android:valueType="floatType"/>
9      <objectAnimator android:propertyName="elevation"
10        android:duration="0"
11        android:valueTo="@dimen/incall_call_button_elevation"
12        android:valueType="floatType"/>
13    </set>
14  </item>
15  <!-- base state -->
16  <item android:state_enabled="true">
17    <set>
18      <objectAnimator android:propertyName="translationZ"
19        android:duration="100"
20        android:valueTo="0"
21        android:startDelay="100"
22        android:valueType="floatType"/>
23      <objectAnimator android:propertyName="elevation"
24        android:duration="0"
25        android:valueTo="@dimen/incall_call_button_elevation"
26        android:valueType="floatType" />
27    </set>
28  </item>
29  ...
30</selector>