MOBILE-3133 android: Fix back button on fullscreen video

MainActivity.java

@@ -0,0 +1,56 @@
+// (C) Copyright 2015 Martin Dougiamas
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Based on the template node_modules/cordova-android/bin/templates/project/Activity.java
+
+package com.moodle.moodlemobile;
+
+import android.os.Bundle;
+import android.view.KeyEvent;
+import android.view.View;
+import org.apache.cordova.*;
+
+public class MainActivity extends CordovaActivity
+{
+    @Override
+    public void onCreate(Bundle savedInstanceState)
+    {
+        super.onCreate(savedInstanceState);
+
+        // enable Cordova apps to be started in the background
+        Bundle extras = getIntent().getExtras();
+        if (extras != null && extras.getBoolean("cdvStartInBackground", false)) {
+            moveTaskToBack(true);
+        }
+
+        // Set by <content src="index.html" /> in config.xml
+        loadUrl(launchUrl);
+    }
+
+    @Override
+    public boolean dispatchKeyEvent(KeyEvent event) {
+        // Forward back key events to the web view.
+        if (this.appView != null && event.getKeyCode() == KeyEvent.KEYCODE_BACK) {
+            View webview = this.appView.getView();
+
+            if (webview != null) {
+                webview.dispatchKeyEvent(event);
+            }
+
+            return true;
+        }
+
+        return super.dispatchKeyEvent(event);
+    }
+}

config.xml

@@ -42,6 +42,7 @@
         <param name="ios-package" onload="true" value="CDVStatusBar" />
     </feature>
     <platform name="android">
+        <resource-file src="MainActivity.java" target="app/src/main/java/com/moodle/moodlemobile/MainActivity.java" />
         <resource-file src="google-services.json" target="app/google-services.json" />
         <splash qualifier="land-ldpi" src="resources/android/splash/drawable-land-ldpi-screen.png" />
         <splash qualifier="land-mdpi" src="resources/android/splash/drawable-land-mdpi-screen.png" />