You need to use a Theme.AppCompat theme (or descendant) with this a xxxActivity

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问题：java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this xxxActivity. 

解决方案：

将xxxActivity 添加theme :

android:theme="@style/Theme.AppCompat.Light.NoActionBar"

推荐在自定义Dialog时，设置样式

MultiStateDialog refundDialog = new MultiStateDialog(this, R.style.MyMiddleDialogStyle);

<style name="AppBaseTheme" parent="Theme.AppCompat.Light.NoActionBar">
    <!--android:Theme.Holo.Light.NoActionBar
        Theme customizations available in newer API levels can go in
        res/values-vXX/styles.xml, while customizations related to
        backward-compatibility can go here.
    -->
</style>