qt/jdc/mobile/trunk/res/drawable/chat_send_btn.xml

<?xml version="1.0" encoding="UTF-8"?>
<selector
  xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_focused="true" android:state_pressed="true" android:drawable="@color/white" />
    <item android:state_focused="false" android:state_pressed="true" android:drawable="@color/white" />
    <item android:state_focused="false" android:drawable="@color/green" />
</selector>