I'm trying to implement android.support.v7.widget.SearchView with a collapseIcon on the Toolbar. Everything works fine i.e, the SearchView is working as expected but I'm unable to remove/ reduce the padding between the SearchView and collapseIcon, as visible in the attached screenshot.
Any ideas on how can I do that?

I've tried :
app:contentInsetStartWithNavigation="0dp"
app:contentInsetLeft="0dp"
app:contentInsetStart="0dp"
android:contentInsetLeft="0dp"
android:contentInsetStart="0dp"
but this doesn't work.