
It is a code that I wrote in my drawable folder, but it won't work either.
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true">
<shape>
<solid android:color="#EF9191" />
<corners android:radius="8dp" />
</shape>
</item>
<item android:state_pressed="false">
<shape>
<solid android:color="#ED3939" />
<corners android:radius="8dp" />
</shape>
</item>
</selector>