Android app fullscreen with no Title bar and no Action bar -

i trying create first android app webview. last issue trying resolve have webview in fullscreen no title bar , no action bar.

my manifest:

<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.domain.butlerv2">  <uses-permission android:name="android.permission.internet" />  <uses-permission android:name="android.permission.internet"/> <uses-permission android:name="android.permission.access_network_state"/> <uses-permission android:name="android.permission.access_wifi_state"/>  <application     android:allowbackup="true"     android:icon="@mipmap/ic_launcher"     android:label="@string/app_name"     android:supportsrtl="true"     android:theme="@style/apptheme.noactionbar">      <activity         android:name=".mainactivity"         android:label="@string/app_name">          <intent-filter>             <action android:name="android.intent.action.main" />              <category android:name="android.intent.category.launcher" />         </intent-filter>     </activity>      <meta-data         android:name="com.google.android.gms.version"         android:value="@integer/google_play_services_version" /> </application>  </manifest> 

my mainactivity:

import android.content.context; import android.net.connectivitymanager; import android.net.networkinfo; import android.net.uri; import android.os.bundle; import android.support.v7.app.appcompatactivity;  import android.view.view; import android.view.windowmanager; import android.webkit.websettings; import android.webkit.webview; import android.webkit.webviewclient; import android.widget.toast;   import com.google.android.gms.appindexing.action; import com.google.android.gms.appindexing.appindex; import com.google.android.gms.common.api.googleapiclient;   public class mainactivity extends appcompatactivity {  string answer;  private googleapiclient client;  @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     getwindow().setflags(windowmanager.layoutparams.flag_fullscreen,             windowmanager.layoutparams.flag_fullscreen);     setcontentview(r.layout.activity_main);       connectivitymanager cm = (connectivitymanager) getapplicationcontext().getsystemservice(context.connectivity_service);      networkinfo activenetwork = cm.getactivenetworkinfo();     if (null != activenetwork) {         if (activenetwork.gettype() == connectivitymanager.type_wifi)             answer = "you connected wifi network";         if (activenetwork.gettype() == connectivitymanager.type_mobile)             answer = "you connected mobile network";     } else         answer = "no wifi connectivity";      toast.maketext(getapplicationcontext(), answer, toast.length_long).show();       webview webview = (webview)             findviewbyid(r.id._webview);      websettings websettings = webview.getsettings();     webview.getsettings().setjavascriptenabled(true);     webview.loadurl("http://www.domain.com/app/index.php");      webview.setwebviewclient(new mybrowser());     webview.requestfocus(view.focusables_all);        client = new googleapiclient.builder(this).addapi(appindex.api).build(); }  @override public void onstart() {     super.onstart();       client.connect();     action viewaction = action.newaction(             action.type_view,              "main page",               uri.parse("android-app://com.domain.butlerv2/http/host/path")     );     appindex.appindexapi.start(client, viewaction); }  @override public void onstop() {     super.onstop();       action viewaction = action.newaction(             action.type_view,              "main page", shown.              uri.parse("http://host/path"),              uri.parse("android-app://com.domain.butlerv2/http/host/path")     );     appindex.appindexapi.end(client, viewaction);     client.disconnect(); }  private class mybrowser extends webviewclient {     @override     public boolean shouldoverrideurlloading(webview view, string url) {         view.loadurl(url);         return true;     } } } 

my style

<resources>  <!-- base application theme. --> <style name="apptheme" parent="theme.appcompat.light.darkactionbar">     <!-- customize theme here. -->     <item name="colorprimary">@color/colorprimary</item>     <item name="colorprimarydark">@color/colorprimarydark</item>     <item name="coloraccent">@color/coloraccent</item> </style>  <style name="apptheme.noactionbar">     <item name="windowactionbar">false</item>     <item name="windownotitle">true</item> </style>    <style name="apptheme.popupoverlay" parent="themeoverlay.appcompat.light" />  <style name="generalnotitle" parent="themeoverlay.appcompat.light">     <item name="android:windownotitle">true</item> </style>  <style name="theme.appcompat.light.noactionbar.fullscreen" parent="@style/theme.appcompat.light">     <item name="windownotitle">true</item>     <item name="windowactionbar">false</item>     <item name="android:windowfullscreen">true</item>     <item name="android:windowcontentoverlay">@null</item> </style>    </resources> 

when run app on android phone title , action bar displayed. can see doing wrong.

i have read many posts , tech papers of different has totally confused me.

can help.

regards

hope solve issue,

change androidmanifest.xml theme from,

 android:theme="@style/apptheme.noactionbar" 

to

android:theme="@android:style/theme.holo.light.noactionbar.fullscreen"