Exception on hiding title of the application using ListActivity

Question

I have a class extending ListActivity and I am trying to hide the default TitleBar (I think it's called ActionBar) using the code below. It works on a regular activity, but not on the ListActivity. How do I accomplish the same in this scenario?

public class MyClass extends ListActivity{
    @Override
    public void onCreate(Bundle b) {
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        super.onCreate(b);
        // Tried Window.FEATURE_NO_TITLE here as well
        setContentView(R.layout.activity_myclass);
        getActionBar().setDisplayHomeAsUpEnabled(true);
    }
}

The result is a NullPointerException. The full error stack trace is here if you need it: http://pastebin.com/VLR5dE8m

Can you post the stacktrace here? I'm behind a corporate proxy.. :| — Enrichman, Nov 08 '12 at 11:04
try **Window.FEATURE** after **setContentView()**. Just a thought. — Sahil Mahajan Mj, Nov 08 '12 at 11:05
call requestWindowFeature(Window.FEATURE_NO_TITLE) after super.onCreate() and setContentView()..... set the window first then set No title bar option. — drulabs, Nov 08 '12 at 11:06
OR you can also Write this "android:theme="@android:style/Theme.NoTitleBar" in manifest under activity tag — drulabs, Nov 08 '12 at 11:08
possible duplicate of [When does android's ListActivity class call setContentView()?](http://stackoverflow.com/questions/6903487/when-does-androids-listactivity-class-call-setcontentview) — user, Nov 08 '12 at 11:13

Shivansh Saxena · Answer 1 · 2012-11-08T11:48:08.783

1

to disable Titltbar,, use this code in your manifest file ,it will help you.

< activity android:theme="@android:style/Theme.NoTitleBar.Fullscreen" >

edited Nov 08 '12 at 11:48

answered Nov 08 '12 at 11:42

Shivansh Saxena

204
2
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score 0 · Answer 2 · answered Nov 08 '12 at 11:10

0

I think You should not use requestWindowFeature() if you are using ActionBar. You can hide title of ActionBar with this:

ActionBar actionBar = getActionBar(); 
actionBar.setDisplayShowTitleEnabled(false);

http://developer.android.com/reference/android/app/ActionBar.html#setDisplayShowTitleEnabled(boolean)

answered Nov 08 '12 at 11:10

traninho

1,533
12
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that's useless since it will just show an icon but without the text title next to it. what you *also* want is `actionBar.setDisplayShowHomeEnabled(false);` – Someone Somewhere Nov 07 '13 at 07:05

score 0 · Accepted Answer · edited May 23 '17 at 12:18

0

To remove the actionbar: getActionBar().hide(). Also see this answer: How to disable action bar permanently

edited May 23 '17 at 12:18

Community

1
1

answered Nov 08 '12 at 11:15

RufusInZen

2,119
1
19
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score -1 · Answer 4 · answered Nov 08 '12 at 11:14

It seems like the NullPointerException is generated by getActionBar(). Removing the following line from the code fixed the issue.

getActionBar().setDisplayHomeAsUpEnabled(true);

The final (working) code:

public class MyClass extends ListActivity{
    @Override
    public void onCreate(Bundle b) {
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        super.onCreate(b);
        setContentView(R.layout.activity_myclass);
     }
}

Note that requestWindowFeature must be called before calling the super class and setContentView.

@downvoter: Care to elaborate on your action? The code works fine and is a solution to the answer. — Dzhuneyt, Nov 08 '12 at 11:30

Exception on hiding title of the application using ListActivity

4 Answers4