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

This works for me! Put this in your Activity in manifests

<activity
   // ...
   android:theme="@style/Theme.AppCompat.Light.NoActionBar"
   // ...
   </activity>

You can also make your custom theme in styles.xml like this:

<style name="Theme.MyCustomTheme" parent="@style/Theme.AppCompat.Light.NoActionBar">
        <item name = "android:windowActionBar">false</item>
        <item name = "android:windowNoTitle">true</item>
        // more custom...
    </style>

Hope this help.

Answer 2

The above answers would help with the ActionBar thing. To add to it, use the following code in case you are using the Splash Screen: Use this before you set the content view:

    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);

Just to clarify, here's how you do it:

    super.onCreate(savedInstanceState);
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);         
    setContentView(R.layout.activity_main);

This would make your screen a full screen, i.e remove the top bar where you see the network bar, etc

Answer 3

Replace AndroidManifest.xml

android:theme="@style/FullscreenTheme"

to

android:theme="@style/Theme.Design.NoActionBar"

Answer 4

The ActionBar usually exists along Fragments so from the Activity you can hide it

getActionbar().hide();
getActionbar().show();

and from the Fragment you can do it

getActivity().getActionbar().hide();
getActivity().getActionbar().show();

Answer 5

As you are asking about how to hide in a certain activity, this is what you need :

getSupportActionBar().hide(); 

Answer 6

Add New Style in your style.xml

<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">

    <!-- Customize your theme here. -->
    <item name="colorPrimary">@color/colorPrimary</item>
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
    <item name="colorAccent">@color/colorAccent</item>
</style>

<style name="LoginTheme" parent="Theme.AppCompat.Light.NoActionBar">
    <item name="colorPrimary">@color/colorPrimary</item>
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
    <item name="colorAccent">@color/colorAccent</item>
</style>

and then add following line in your manifest

<activity android:name=".Login"
        android:label="@string/app_name"
        android:theme="@style/LoginTheme"
        >