When building an Android application, sometimes we need to put  application logo at the center of Actionbar. Android doesn’t provide a straight method to place a logo image at the center of Actionbar so we have to make a custom layout contains the logo image and place it on Actionbar using custom view.

This sample code below demonstrates how to place a logo at the center of actionbar

<br />public class MainActivity extends Activity {<br /><br /><%%KEEPWHITESPACE%%>	@Override<br /><%%KEEPWHITESPACE%%>	protected void onCreate(Bundle savedInstanceState) {<br /><%%KEEPWHITESPACE%%>		super.onCreate(savedInstanceState);<br /><br /><%%KEEPWHITESPACE%%>		getActionBar().setDisplayHomeAsUpEnabled(false);<br /><%%KEEPWHITESPACE%%>		getActionBar().setDisplayShowTitleEnabled(false);<br /><br /><%%KEEPWHITESPACE%%>		if (findViewById(android.R.id.home) != null) {<br /><%%KEEPWHITESPACE%%>			findViewById(android.R.id.home).setVisibility(View.GONE);<br /><%%KEEPWHITESPACE%%>		}<br /><br /><%%KEEPWHITESPACE%%>		LayoutInflater inflator = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);<br /><br /><%%KEEPWHITESPACE%%>		View view = inflator.inflate(R.layout.view_ab, null);<br /><br /><%%KEEPWHITESPACE%%>		ActionBar.LayoutParams params = new ActionBar.LayoutParams(<br /><%%KEEPWHITESPACE%%>			     ActionBar.LayoutParams.WRAP_CONTENT,<br /><%%KEEPWHITESPACE%%>			     ActionBar.LayoutParams.WRAP_CONTENT, Gravity.CENTER );<br /><br /><%%KEEPWHITESPACE%%>		getActionBar().setDisplayShowCustomEnabled(true);<br /><%%KEEPWHITESPACE%%>		getActionBar().setCustomView(view, params);<br /><br /><%%KEEPWHITESPACE%%>		setContentView(R.layout.activity_main);<br /><%%KEEPWHITESPACE%%>	}<br />}<br />
How it works:
Disable the title text and up menu
<br />getActionBar().setDisplayHomeAsUpEnabled(false);<br />getActionBar().setDisplayShowTitleEnabled(false);<br />
Hide the default application logo on the left of actionbar
<br />if (findViewById(android.R.id.home) != null) {<br /><%%KEEPWHITESPACE%%>    findViewById(android.R.id.home).setVisibility(View.GONE);<br />}<br />
Inflate the custom view contains the logo image
<br />View view = inflator.inflate(R.layout.view_ab, null);<br />
Set the custom view at the center of actionbar
<br />ActionBar.LayoutParams params = new ActionBar.LayoutParams(<br /><%%KEEPWHITESPACE%%>			     ActionBar.LayoutParams.WRAP_CONTENT,<br /><%%KEEPWHITESPACE%%>			     ActionBar.LayoutParams.WRAP_CONTENT, Gravity.CENTER );<br />
Finally, set the custom view into actionbar
<br />getActionBar().setDisplayShowCustomEnabled(true);<br />getActionBar().setCustomView(view, params);<br />
Remember we have to call getActionBar().setDisplayShowCustomEnabled(true) to enable custom view



Custom view (view_ab.xml)
 
<br />&lt;?xml version="1.0" encoding="utf-8"?&gt;<br />&lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"<br /><%%KEEPWHITESPACE%%>    android:layout_width="wrap_content"<br /><%%KEEPWHITESPACE%%>    android:layout_height="wrap_content"&gt;<br /><br /><%%KEEPWHITESPACE%%>    &lt;ImageView<br /><%%KEEPWHITESPACE%%>        android:id="@+id/iv_logo"<br /><%%KEEPWHITESPACE%%>        android:layout_width="wrap_content"<br /><%%KEEPWHITESPACE%%>        android:layout_height="wrap_content"<br /><%%KEEPWHITESPACE%%>        android:contentDescription="@string/app_name"<br /><%%KEEPWHITESPACE%%>        android:clickable="true"<br /><%%KEEPWHITESPACE%%>        android:src="@drawable/ab_logo" /&gt;<br /><br />&lt;/LinearLayout&gt;<br />