Tạo file xml có tên res/drawable/statelistexample.xml

<selector

xmlns:android="http://schemas.android.com/apk/res/android"

android:dither="true">

<item android:state_pressed="true">

<shape android:shape="oval">

<gradient android:angle="270"

android:endColor="#D1362B"

android:startColor="#94231B" />

<stroke

android:width="1dp"

android:color="#96231D" />

<corners android:radius="4dp" />

<padding

android:bottom="10dp"

android:left="10dp"

android:right="10dp"

android:top="10dp" />

</shape>

</item>

<item>

<shape>

<gradient

android:angle="270"

android:endColor="#94231B"

android:startColor="#D1362B" />

<stroke

android:width="1dp" a

ndroid:color="#96231D" />

<corners android:radius="4dp" />

<padding

android:bottom="10dp"

android:left="10dp"

android:right="10dp"

android:top="10dp" />

</shape>

</item>

</selector>