Fullscreen fuer WebView eingebaut, so das die NaviBar auch mit verschwindet.

app/src/main/AndroidManifest.xml

@@ -3,23 +3,36 @@
     package="com.example.app"
     xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools">
+
+    <supports-screens
+        android:xlargeScreens="true"
+        android:largeScreens="true" />
+
     <uses-permission android:name="android.permission.INTERNET" />
     <application
         android:allowBackup="true"
         android:fullBackupContent="true"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
-        android:theme="@style/AppTheme"
+	    android:theme="@style/AppTheme"
+        android:fitsSystemWindows="true"
         tools:ignore="GoogleAppIndexingWarning">
         <activity
-            android:configChanges="orientation|screenSize"
+            android:configChanges="orientation|screenSize|keyboardHidden"
             android:name="com.example.app.MainActivity"
             android:label="@string/app_name"
-            android:exported="true">
+            android:exported="true"
+            android:launchMode = "singleInstance"
+            android:keepScreenOn="true"
+            android:hardwareAccelerated="true"
+            android:theme="@android:style/Theme.NoTitleBar.Fullscreen">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
+                <action android:name="android.intent.action.VIEW" />
                 <category android:name="android.intent.category.LAUNCHER" />
+                <category android:name="android.intent.category.LEANBACK_LAUNCHER" />
+                <category android:name="android.intent.category.DEFAULT" />
             </intent-filter>
         </activity>
     </application>
-</manifest>
+</manifest>

app/src/main/java/com/example/app/MainActivity.java

@@ -3,6 +3,8 @@ package com.example.app;
 import android.annotation.SuppressLint;
 import android.app.Activity;
 import android.os.Bundle;
+import android.view.View;
+import android.view.WindowManager;
 import android.webkit.WebSettings;
 import android.webkit.WebView;
 
@@ -14,6 +16,16 @@ public class MainActivity extends Activity {
     @SuppressLint("SetJavaScriptEnabled")
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
+        //Code fuer Fullscreen in APP
+        //http://www.java2s.com/example/java-api/android/view/view/system_ui_flag_fullscreen-4.html
+        getWindow().getDecorView()// w  w  w .  j  a v a2 s. c  o  m
+                .setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
+                        | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
+                        | View.SYSTEM_UI_FLAG_FULLSCREEN | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
+        getWindow().addFlags(
+                WindowManager.LayoutParams.FLAG_FULLSCREEN | WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS);
+        //Code Ende fuer Fullscreen
+
         setContentView(R.layout.activity_main);
         mWebView = findViewById(R.id.activity_main_webview);
         WebSettings webSettings = mWebView.getSettings();
@@ -21,7 +33,7 @@ public class MainActivity extends Activity {
         mWebView.setWebViewClient(new MyWebViewClient());
 
         // REMOTE RESOURCE
-        // mWebView.loadUrl("https://example.com");
+        mWebView.loadUrl("https://foto.steffen.probst.click/index.php?/category/8#&ui-state=dialog");
 
         // LOCAL RESOURCE
         // mWebView.loadUrl("file:///android_asset/index.html");

app/src/main/java/com/example/app/MyWebViewClient.java

@@ -1,5 +1,8 @@
 package com.example.app;
 
+
+import static android.view.View.SYSTEM_UI_FLAG_LAYOUT_STABLE;
+
 import android.content.Intent;
 import android.net.Uri;
 import android.webkit.WebView;
@@ -12,13 +15,14 @@ class MyWebViewClient extends WebViewClient {
         String hostname;
 
         // YOUR HOSTNAME
-        hostname = "example.com";
+        hostname = "foto.steffen.probst.click";
 
         Uri uri = Uri.parse(url);
         if (url.startsWith("file:") || uri.getHost() != null && uri.getHost().endsWith(hostname)) {
             return false;
         }
         Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
+
         view.getContext().startActivity(intent);
         return true;
     }

app/src/main/res/layout/activity_main.xml

@@ -5,7 +5,7 @@
 
     <WebView
         android:id="@+id/activity_main_webview"
-        android:layout_width="match_parent"
+        android:layout_width="fill_parent"
-        android:layout_height="match_parent" />
+        android:layout_height="fill_parent" />
 
-</RelativeLayout>
+</RelativeLayout>

app/src/main/res/values/styles.xml

@@ -1,9 +1,23 @@
 <resources>
-
+<!--
-    <style name="AppTheme" parent="android:Theme.DeviceDefault.Light">
+    <style name="AppTheme" parent="android:Theme.Holo.Light.NoActionBar">
+	 <item name="android:layout_width">fill_parent</item>
+        <item name="android:layout_height">fill_parent</item>
         <item name="android:statusBarColor">@android:color/black</item>
         <item name="android:windowActionBar">false</item>
         <item name="android:windowNoTitle">true</item>
+        <item name="android:windowFullscreen">true</item>
+	<item name="android:windowContentOverlay">@null</item>
+    </style> -->
+
+	    <!-- <style name="AppTheme" parent="android:Theme.Material.Wallpaper.NoTitleBar"> -->
+    <style name="AppTheme" parent="android:Theme.Material.Wallpaper.NoTitleBar">
+        <item name="android:statusBarColor">@android:color/transparent</item>
+        <item name="android:navigationBarColor">@android:color/transparent</item>
+        <item name="android:windowTranslucentStatus">true</item>
+        <item name="android:windowTranslucentNavigation">true</item>
+	<item name="android:navigationBarColor">@android:color/transparent</item>
+    	<item name="android:enforceNavigationBarContrast">false</item>
     </style>
 
 </resources>