Toolbar how to arrange items?

Question

Android

There is this menu:

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">
    <item
        android:id="@+id/navigation_bar"
        android:title="@string/navigation"
        android:orderInCategory="100"

        app:showAsAction="ifRoom"
        android:icon="@drawable/is_back">
    </item>
</menu>

How to place this item in a certain place (for example, in the left corner of the toolbar)?

Answer 1

1. This is the standard way, it will only position the elements in the standard way, i.e. just how Google intended
2. To arrange custom elements, you need to re-layout the Toolbar itself like this
3. Since this is extremely against Google's guidelines, consider whether this is really what you need

Answer 2

Alternatively, you can write the following lines in the Activity:

setSupportActionBar((Toolbar) findViewById(R.id.toolbar));        
getSupportActionBar().setDisplayHomeAsUpEnabled(true);       
getSupportActionBar().setHomeAsUpIndicator(R.drawable. is_back);