How can I remove the left space between back button and SearchView

Question

I keep having a big white space in the left of my Toolbar between the back button and SearchView. My xml file looks like this

<android.support.v7.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize"
        app:layout_scrollFlags="scroll|enterAlways"
        android:contentInsetStart="0dp"
        app:contentInsetStart="0dp">

        <android.support.v7.widget.SearchView
            android:id="@+id/search_view"
            android:layout_width="match_parent"
            android:layout_height="match_parent"/>


    </android.support.v7.widget.Toolbar>

In my Activity I add a back button like below

getSupportActionBar().setDisplayHomeAsUpEnabled(true);

if I set it to false it works okay. But I need to have a back button. Is there a way to solve it? Thank you.

I didn't use a menu layout.

Answer 1

By default, Toolbar have 16dp inset after backbutton. So, include app:contentInsetStartWithNavigation="0dp" in Toolbar, it will remove that whitespace.

<android.support.v7.widget.Toolbar
    android:id="@+id/toolbar"
    android:layout_width="match_parent"
    android:layout_height="?attr/actionBarSize"
    app:layout_scrollFlags="scroll|enterAlways"
    android:contentInsetStart="0dp"
    app:contentInsetStartWithNavigation="0dp"
    app:contentInsetStart="0dp">