Android + Phonegap: Scale the WebView to fit the device

I was porting an iPad app to Android for the new Samsung tablet, and I had some trouble getting my web view to scale to the size of the device screen so that I wouldn't have to resize any of my assets. Obviously this is a questionable tactic, but I was experimenting and wanted to see how it would look :)

Here's the meat of my main App.java class:

public class App extends DroidGap {
 
 // declare the original size of the iPad app
 protected float ORIG_APP_W = 768;
 protected float ORIG_APP_H = 1004;
 
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        super.loadUrl("file:///android_asset/www/index.html");
        
     // set some defaults
     this.appView.setBackgroundColor(0x000000);
     this.appView.setHorizontalScrollBarEnabled(false);
     this.appView.setHorizontalScrollbarOverlay(false);
     this.appView.setVerticalScrollBarEnabled(false);
     this.appView.setVerticalScrollbarOverlay(false);
     
     // get actual screen size
     Display display = ((WindowManager) getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
     int width = display.getWidth(); 
     int height = display.getHeight(); 
     
     // calculate target scale (only dealing with portrait orientation)
     double globalScale = Math.ceil( ( width / ORIG_APP_W ) * 100 );
     
     // make sure we're all good
     Log.v( "ORIG_APP_W", " = " + ORIG_APP_W );
     Log.v( "ORIG_APP_H", " = " + ORIG_APP_H );
     Log.v( "width", " = " + width );
     Log.v( "this.appView.getMeasuredHeight()", " = " + height );
     Log.v( "globalScale", " = " + globalScale );
     Log.v( "this.appView.getScale()", "index=" + this.appView.getScale() );
    
     // set some defaults on the web view
     this.appView.getSettings().setBuiltInZoomControls( false );
     this.appView.getSettings().setSupportZoom( false );
     this.appView.getSettings().setGeolocationEnabled( true );
     this.appView.getSettings().setLightTouchEnabled( true );
     this.appView.getSettings().setRenderPriority( RenderPriority.HIGH );
     
     // set the scale
     this.appView.setInitialScale( (int)globalScale );
   }
}

I also updated the AndroidManifest.xml file to lock the app into portrait orientation, work on tablet-sized devices, have a nice app name, and give the device access to the Internet and geolocation:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.phonegap.testapp"
      android:versionCode="1"
      android:versionName="1.0">     
     
    <application android:icon="@drawable/icon" 
        android:label="@string/app_name"
        android:debuggable="true">
        <activity android:name=".App" 
                  android:label="Test App" 
                  android:configChanges="orientation|keyboardHidden"
                  android:noHistory="true" 
                  android:stateNotNeeded="true" 
                  android:screenOrientation="portrait">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

    <!-- allows access to phonegap hardware features -->
 <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" />-->
 <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /> 
 <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
 <uses-permission android:name="android.permission.ACCESS_LOCATION_EXTRA_COMMANDS" />
    <uses-permission android:name="android.permission.READ_PHONE_STATE" />


   <supports-screens
     android:largeScreens="true"
     android:normalScreens="false"
     android:smallScreens="false"
     android:resizeable="true"
     android:anyDensity="true"
     />

</manifest> 

And finally my res/layout/main.xml file, though I'm not sure if this is different from the Phonegap default:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >    
            <WebView android:id="@+id/appView"
            android:layout_height="fill_parent"
            android:layout_width="fill_parent"
            /> 
</LinearLayout>

I hope this helps someone port their hybrid html5 iPad app to Android tablets.