How Can we hide title bar while using action bar?

Question

I'm using ActionBarSherlock and I'm trying to hide the title bar of my application but whenever I do that, I get a NullPointerException when accessing the ActionBar How do I remove/hide the title bar? Please note that I'm not referring to the title of the action bar. I'm referring to the title bar above the action bar. I'm running my application on an Android 2.3 device.

Below is my code: (My class extends SherlockFragmentActivity.)

super.onCreate(savedInstanceState);
setTheme(R.style.Theme_Sherlock);
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
ActionBar actionbar = getSupportActionBar();
actionbar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS); //I get the NullPointerException here.

//...

setContentView(R.layout.tab_navigation);

Solution 1

Found the solution on this one. If you declare your theme on AndroidManifest.xml, the title bar will go away on its own. Although, I don't why it only works when declared on AndroidManifest.xml and not on code.

The reason for the NullPointerException is that ActionBar is synonymous to the TitleBar on higher versions (ICS and newer). By using the compatibility library and ActionBarSherlock, hiding the TitleBar will also mean hiding the ActionBar.

Below is how you can set your application to use Sherlock's theme: (You should add it on the application's tag)

android:theme="@style/Theme.Sherlock"

If you know how to hide the title bar on code, please feel free to modify my answer to include your answer. And if anyone can explain why it only works on the manifest file and not on code if would be nice. :)

Solution 2

I hide the title bar by adding the following lines of code:

getSupportActionBar().setDisplayShowTitleEnabled(false);
getSupportActionBar().setDisplayShowHomeEnabled(false);

hope this helps :)

Solution 3

to hide all the title bar and keep only the action bar use this code:

final ActionBar actionBar = getActionBar();
actionBar.setDisplayShowHomeEnabled(false);
actionBar.setDisplayShowTitleEnabled(false);
actionBar.setDisplayUseLogoEnabled(false);

it worked for me

Solution 4

I was searching for an answer for this. Found one solution.

actionBar = getActionBar();
actionBar.hide();

The above snippet will remove the tab title and slider. Hope it helps.

Solution 5

see this answer to grammatically show/hide titleBar from the ActionBarSherlock ..

android: title bar hide

View more solutions

Comments

[Bartek]

The explanation of the code vs. manifest issue is in my answer.

[Azahar]

The method getSupportActionBar() is undefined for the type

[Khaledvic]

@Azahar you should use getActionBar() if you aren't using support libraries

[panchicore]

and if you are using menu layouts, set them as android:showAsAction="never" in menu.xml