Android: how to hide ActionBar on certain activiti

Question

I've developed a simple demo application with a splash screen a map and some regular screens.

I have an action bar at the top that contains a logo. It all looks fine on my phone (Galaxy s1 I9000 V2.3) but when i test it on Galaxy s2 v4 the action bar appears also in the splash screen and in the map screen.

The spalsh and map activity are not even inheriting from ActionBarActivity so how is that possible and how can i make it go away?

Manifest:

<application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:theme="@style/Theme.AppCompat.Light" >
        <activity
            android:name=".HomeActivity"
            android:icon="@drawable/android_logo"
            android:label=""
            android:logo="@drawable/android_logo" >

            <!--
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
            -->
        </activity>
        <activity
            android:name=".MapActivity"
            android:label="" >
        </activity>
        <activity
            android:name=".PackageActivity"
            android:icon="@drawable/android_logo"
            android:label=""
            android:logo="@drawable/android_logo" >
        </activity>
        <activity
            android:name=".SplashActivity"
            android:label="" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

    </application>

MapActivity definition (it's a long one so i included just the definition):

public class MapActivity extends FragmentActivity implements LocationListener

Splash Activity:

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.support.v7.app.ActionBar;
import android.support.v7.app.ActionBarActivity;

public class SplashActivity extends Activity{

    private static final long SPLASH_DISPLAY_LENGTH = 2000;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_splash);

        new Handler().postDelayed(new Runnable(){
            @Override
            public void run() {
                Intent mainIntent = new Intent(SplashActivity.this,HomeActivity.class);
                SplashActivity.this.startActivity(mainIntent);
                SplashActivity.this.finish();
            }
        }, SPLASH_DISPLAY_LENGTH);

    }

}

Answer 1

If you want to get full screen without actionBar and Title.

Add it in style.xml

<style name="AppTheme.NoActionBar" parent="Theme.AppCompat.Light.DarkActionBar">
      <item name="windowActionBar">false</item>
      <item name="windowNoTitle">true</item>
      <item name="android:windowFullscreen">true</item>
</style>

and use the style at activity of manifest.xml.

<activity ....
      android:theme="@style/AppTheme.NoActionBar" > ......
</activity> 

Answer 2

If you were using Theme.AppCompat.Light, a better equivalent would be Theme.AppCompat.Light.NoActionBar.

I found that using Theme.AppCompat.NoTitleBar caused my button text to be invisible so I am using Theme.AppCompat.Light.NoActionBar.

<activity android:name=".Activity"
    android:label="@string/app_name"
    android:theme="@android:style/Theme.AppCompat.Light.NoActionBar">
    <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>
</activity>

Answer 3

From here:

Beginning with Android 3.0 (API level 11), all activities that use the default theme have an ActionBar as an app bar. However, app bar features have gradually been added to the native ActionBar over various Android releases. As a result, the native ActionBar behaves differently depending on what version of the Android system a device may be using. By contrast, the most recent features are added to the support library's version of Toolbar, and they are available on any device that can use the support library.

So one option is to disable ActionBar completely (in the app manifest.xml file) and then add Toolbar in every page that needs an ActionBar.

(follow the above link for step-by-step explanation)

Answer 4

Apply the following in your Theme for the Activity in AndroidManifest.xml:

<activity android:name=".Activity"
    android:label="@string/app_name"
    android:theme="@android:style/Theme.NoTitleBar">
    <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>
</activity>

That should do the trick.

Answer 5

You can use Low Profile mode See here

Just search for SYSTEM_UI_FLAG_LOW_PROFILE that also dims the navigation buttons if they are present of screen.

Answer 6

Apply the following in your Theme for the Activity in AndroidManifest.xml:

<activity android:name=".DashboardActivity"
        android:theme="@style/AppFullScreenTheme">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>

Then Apply the following in your Style in style.xml

<style name="AppFullScreenTheme" parent="Theme.AppCompat.Light.NoActionBar">
    <item name="android:windowNoTitle">true</item>
    <item name="android:windowActionBar">false</item>
    <item name="android:windowFullscreen">true</item>
    <item name="android:windowContentOverlay">@null</item>
</style>