XML : Disable a Android Title

1.Hello , i am trying to build a webView Full Screen App But i can't understand how to disable the title bar I change the theme in my manifest to this : Android:theme="@style/Theme.AppCompat.NoActionBar" >`

But that still keep showing me that Title .

2.From sdk 6 there is a like a email icon on the right bottom of the app,there is way to disable that too ?

Thanks for all the help !!

code :

Manifest :

      <?xml version="1.0" encoding="utf-8"?>  <manifest xmlns:android="http://schemas.android.com/apk/res/android"      package="com.example.omermalka.webview" >        <uses-permission android:name="android.permission.INTERNET" />        <application          android:allowBackup="true"          android:icon="@mipmap/ic_launcher"          android:label="@string/app_name"          android:supportsRtl="true"          android:theme="@style/Theme.AppCompat.NoActionBar" >          <activity              android:name=".MainActivity"              android:label="@string/app_name"              android:theme="@style/Theme.AppCompat.NoActionBar" >              <intent-filter>                  <action android:name="android.intent.action.MAIN" />                    <category android:name="android.intent.category.LAUNCHER" />              </intent-filter>          </activity>      </application>    </manifest>    

main Activity :

  package com.example.omermalka.webview;    import android.os.Bundle;  import android.support.design.widget.FloatingActionButton;  import android.support.design.widget.Snackbar;  import android.support.v7.app.AppCompatActivity;  import android.support.v7.widget.Toolbar;  import android.view.View;  import android.view.Menu;  import android.view.MenuItem;  import android.view.Window;  import android.view.WindowManager;  import android.webkit.WebView;  import android.webkit.WebViewClient;    public class MainActivity extends AppCompatActivity {        @Override      protected void onCreate(Bundle savedInstanceState) {          super.onCreate(savedInstanceState);            setContentView(R.layout.activity_main);          //Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);          //setSupportActionBar(toolbar);            /*FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);          fab.setOnClickListener(new View.OnClickListener() {              @Override              public void onClick(View view) {                  Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)                          .setAction("Action", null).show();              }          });*/          WebView webView = (WebView)findViewById(R.id.webView);          webView.getSettings().setJavaScriptEnabled(true);          webView.setWebViewClient(new MyBrowser());          webView.loadUrl("https://pizzahut.co.il");      }      private class MyBrowser extends WebViewClient{          @Override          public boolean shouldOverrideUrlLoading(WebView view, String url) {              view.loadUrl(url);          return true;          }      }    }    

Activity.XML :

  <?xml version="1.0" encoding="utf-8"?>  <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"      xmlns:tools="http://schemas.android.com/tools"      xmlns:app="http://schemas.android.com/apk/res-auto"      android:layout_width="match_parent"      android:layout_height="match_parent"      app:layout_behavior="@string/appbar_scrolling_view_behavior"      tools:showIn="@layout/activity_main" tools:context=".MainActivity">        <WebView          android:layout_width="match_parent"          android:layout_height="match_parent"          android:id="@+id/webView"          android:layout_alignParentStart="true" />  </RelativeLayout>    

Thanks again to all the helpers