QSPackKit/sdk/jm/res/drawable/umcsdk_login_btn_bg.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@drawable/umcsdk_login_btn_normal" android:state_pressed="false" android:state_enabled="true"/>
    <item android:drawable="@drawable/umcsdk_login_btn_press" android:state_pressed="true" android:state_enabled="true"/>
    <item android:drawable="@drawable/umcsdk_login_btn_unable" android:state_enabled="false"/>
</selector>