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

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="true" android:drawable="@mipmap/msg_send_p"></item>
    <item android:state_selected="true" android:drawable="@mipmap/msg_send_p"></item>
    <item android:state_focused="true" android:drawable="@mipmap/msg_send_p"></item>
    <item android:drawable="@mipmap/msg_send_n"></item>
</selector>