ActionBar - custom view with centered ImageView, Action Items on sides

Question

I have a requirement to center a custom logo (using an ImageView) in the Actionbar for the "Home" activity. I'm using ABS for this project. This is very similar to a another question posted on S.O. (ActionBar logo centered and Action items on sides), but I'm not sure if the ImageView or search menu makes a difference, as I'm not getting the results I'm looking for (a centered image), or if I've just got it wrong. Basically, I set an Icon on the left, insert the custom view in the center, and have a search icon on the right (OptionsMenu). The image does appear a bit to the right of the icon, but it's still left of centered. Any pointers on how to center an ImageView in the actionbar would be greatly appreciated.

Home.java:

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_home);

    LayoutInflater inflater = (LayoutInflater) getSupportActionBar().getThemedContext()
            .getSystemService(LAYOUT_INFLATER_SERVICE);

    final View customActionBarView = inflater.inflate(
            R.layout.actionbar_custom_view_home, null);

    /* Show the custom action bar view and hide the normal Home icon and title */
    final ActionBar actionBar = getSupportActionBar();
    actionBar.setHomeButtonEnabled(true);
    actionBar.setDisplayHomeAsUpEnabled(false);
    actionBar.setDisplayShowTitleEnabled(false);
    actionBar.setIcon(R.drawable.ic_ab_som);
    actionBar.setCustomView(customActionBarView);
    actionBar.setDisplayShowCustomEnabled(true);

}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    MenuInflater inflater = new MenuInflater(this);
    inflater.inflate(R.menu.search, menu);
    return true;
}

res/layout/actionbar_custom_view_home.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_gravity="center">

<ImageView
    android:id="@+id/actionBarLogo"
    android:contentDescription="@string/application_name"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:clickable="false"
    android:duplicateParentState="false"
    android:focusable="false"
    android:longClickable="false"
    android:padding="@dimen/padding_small"
    android:src="@drawable/logo_horizontal" />

</LinearLayout>

res/menu/search.xml:

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
    <item 
        android:id="@id/search_item"
        android:icon="?attr/action_search"
        android:title="@string/search_label"
        android:showAsAction="ifRoom|collapseActionView">
    </item>
</menu>

Answer 1

If you want imageview in Center of ActionBar then use:

just replace getActionBar(); to getSupportActionBar(); in below code

public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        final ActionBar actionBar = getActionBar();
        actionBar.setCustomView(R.layout.actionbar_custom_view_home);
        actionBar.setDisplayShowTitleEnabled(false);
        actionBar.setDisplayShowCustomEnabled(true);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }

your actionbar_custom_view_home.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:gravity="center"
    android:orientation="horizontal" >

    <ImageView
        android:id="@+id/actionBarLogo"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:clickable="false"
        android:focusable="false"
        android:longClickable="false"
        android:src="@drawable/ic_launcher" />

</LinearLayout>

---

Hide Actionbar Icon

final ActionBar actionBar = getActionBar();
actionBar.setCustomView(R.layout.actionbar_custom_view_home);
actionBar.setDisplayShowTitleEnabled(false);
actionBar.setDisplayShowCustomEnabled(true);
actionBar.setDisplayUseLogoEnabled(false);
actionBar.setDisplayShowHomeEnabled(false);

Note: for < 11 API use getSupportActionBar() and > 11 API use getActionBar()

---

EDITED: 02/03/16 for Toolbar

<android.support.v7.widget.Toolbar
   style="@style/ToolBarStyle"
   xmlns:android="http://schemas.android.com/apk/res/android"
   android:layout_width="match_parent"
   android:layout_height="wrap_content"
   android:background="?attr/colorPrimary"
   android:minHeight="@dimen/abc_action_bar_default_height_material">

    <ImageView
        android:layout_width="wrap_content"
        android:contentDescription="@string/logo"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:src="@drawable/ic_launcher"/>

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