cordova-android/framework/src/com/phonegap/DroidGap.java

/*
 * PhoneGap is available under *either* the terms of the modified BSD license *or* the
 * MIT License (2008). See http://opensource.org/licenses/alphabetical for full text.
 * 
 * Copyright (c) 2005-2010, Nitobi Software Inc.
 * Copyright (c) 2010, IBM Corporation
 */
package com.phonegap;

import org.json.JSONArray;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.res.Configuration;
import android.graphics.Bitmap;
import android.graphics.Color;
import android.net.Uri;
import android.os.Bundle;
import android.util.Log;
import android.view.KeyEvent;
import android.view.ViewGroup;
import android.view.Window;
import android.view.WindowManager;
import android.webkit.JsResult;
import android.webkit.WebBackForwardList;
import android.webkit.WebChromeClient;
import android.webkit.WebHistoryItem;
import android.webkit.WebSettings;
import android.webkit.WebStorage;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.webkit.GeolocationPermissions.Callback;
import android.webkit.WebSettings.LayoutAlgorithm;
import android.widget.LinearLayout;
import com.phonegap.api.Plugin;
import com.phonegap.api.PluginManager;
import com.phonegap.api.PhonegapActivity;

/**
 * This class is the main Android activity that represents the PhoneGap
 * application.  It should be extended by the user to load the specific
 * html file that contains the application.
 * 
 * As an example:
 * 
 *     package com.phonegap.examples;
 *     import android.app.Activity;
 *     import android.os.Bundle;
 *     import com.phonegap.*;
 *     
 *     public class Examples extends DroidGap {
 *       @Override
 *       public void onCreate(Bundle savedInstanceState) {
 *         super.onCreate(savedInstanceState);
 *                  
 *         // Set properties for activity
 *         super.setProperty("loadingDialog", "Title,Message"); // show loading dialog
 *         super.setProperty("errorUrl", "file:///android_asset/www/error.html"); // if error loading file in super.loadUrl().
 *
 *         // Initialize activity
 *         super.init();
 *         
 *         // Add your plugins here or in JavaScript
 *         super.addService("MyService", "com.phonegap.examples.MyService");
 *         
 *         // Clear cache if you want
 *         super.appView.clearCache(true);
 *         
 *         // Load your application
 *         super.loadSplashscreen("file:///android_asset/www/splash.html");
 *         super.loadUrl("file:///android_asset/www/index.html", 3000); // show splash screen 3 sec before loading app
 *       }
 *     }
 *
 * Properties: The application can be configured using the following properties:
 * 		super.setProperty("hideLoadingDialogOnPage", true);
 * 		super.setProperty("loadInWebView", true);
 * 		super.setProperty("splashscreen", R.drawable.splash);
 * 		super.setProperty("loadUrlTimeoutValue", 60000);
 * 		super.setProperty("loadingDialog", "Wait,Loading Demo...");
 * 		super.setProperty("errorUrl", "file:///android_asset/www/error.html");
 * 		super.setProperty("keepRunning", false);
 * 
 * Splash screens:
 * 		There are 2 ways to display a splash screen.
 *			1. Specify an image file from the resource drawable directory.  If there
 *			   is an image called splash.jpg, then you would call:
 *					super.setProperty("splashscreen", R.drawable.splash
 *			2. Specify an HTML file that contains the splash screen:
 *					super.loadSplashScreen("file:///android_asset/www/splash.html");
 */
public class DroidGap extends PhonegapActivity {

	// The webview for our app
	protected WebView appView;					

	private LinearLayout root;
	private BrowserKey mKey;
	public CallbackServer callbackServer;
	protected PluginManager pluginManager;

	// The initial URL for our app
	private String url;
	
	// The base of the initial URL for our app
	private String baseUrl;

	// Plugin to call when activity result is received
	private Plugin activityResultCallback = null;

	// URL of the splash screen that is currently showing
	private String splashScreenShowing = null;
	
	// Flag indicates that a loadUrl timeout occurred
	private boolean loadUrlTimeout = false;
	
	/*
	 * The variables below are used to cache some of the activity properties.
	 */
	
	// Flag indicates that "app loading" dialog should be hidden once page is loaded.
	// The default is to hide it once PhoneGap JavaScript code has initialized.
	protected boolean hideLoadingDialogOnPageLoad = false;	

	// Flag indicates that a URL navigated to from PhoneGap app should be loaded into same webview
	// instead of being loaded into the web browser.  
	protected boolean loadInWebView = false;

	// Draw a splash screen using an image located in the drawable resource directory.
	// This is not the same as calling super.loadSplashscreen(url)
	protected int splashscreen = 0;

	// LoadUrl timeout value in msec (default of 20 sec)
	protected int loadUrlTimeoutValue = 20000;
	
	// Keep app running when pause is received. (default = true)
	// If true, then the JavaScript and native code continue to run in the background
	// when another application (activity) is started.
	protected boolean keepRunning = true;

    /** 
     * Called when the activity is first created. 
     * 
     * @param savedInstanceState
     */
    @Override
    public void onCreate(Bundle savedInstanceState) {
    	super.onCreate(savedInstanceState);
    	getWindow().requestFeature(Window.FEATURE_NO_TITLE);
    	getWindow().setFlags(WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN,
    			WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
    	// This builds the view.  We could probably get away with NOT having a LinearLayout, but I like having a bucket!

    	root = new LinearLayout(this);
    	root.setOrientation(LinearLayout.VERTICAL);
    	root.setBackgroundColor(Color.BLACK);
    	root.setLayoutParams(new LinearLayout.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT, 
    			ViewGroup.LayoutParams.FILL_PARENT, 0.0F));

    	// If url was passed in to intent, then init webview, which will load the url
    	Bundle bundle = this.getIntent().getExtras();
    	if (bundle != null) {
    		String url = bundle.getString("url");
    		if (url != null) {
    			this.init();
    		}
    	}
    }
    
    /**
     * Create and initialize web container.
     */
	public void init() {
		
		// Create web container
		this.appView = new WebView(DroidGap.this);
		
		this.appView.setLayoutParams(new LinearLayout.LayoutParams(
        		ViewGroup.LayoutParams.FILL_PARENT,
        		ViewGroup.LayoutParams.FILL_PARENT, 
        		1.0F));

        WebViewReflect.checkCompatibility();

        if (android.os.Build.VERSION.RELEASE.startsWith("2.")) {
        	this.appView.setWebChromeClient(new EclairClient(DroidGap.this));        	
        }
        else {
        	this.appView.setWebChromeClient(new GapClient(DroidGap.this));
        }
           
        this.appView.setWebViewClient(new GapViewClient(this));

        this.appView.setInitialScale(100);
        this.appView.setVerticalScrollBarEnabled(false);
        this.appView.requestFocusFromTouch();

        // Enable JavaScript
        WebSettings settings = this.appView.getSettings();
        settings.setJavaScriptEnabled(true);
        settings.setJavaScriptCanOpenWindowsAutomatically(true);
        settings.setLayoutAlgorithm(LayoutAlgorithm.NORMAL);

        // Enable database
        Package pack = this.getClass().getPackage();
        String appPackage = pack.getName();
        WebViewReflect.setStorage(settings, true, "/data/data/" + appPackage + "/app_database/");

        // Enable DOM storage
        WebViewReflect.setDomStorage(settings);
        
        // Enable built-in geolocation
        WebViewReflect.setGeolocationEnabled(settings, true);

        // Bind PhoneGap objects to JavaScript
        this.bindBrowser(this.appView);

        // Add web view
        root.addView(this.appView);
        setContentView(root);
        
        // Handle activity parameters
        this.handleActivityParameters();
	}
	
    /**
     * Bind PhoneGap objects to JavaScript.
     * 
     * @param appView
     */
	private void bindBrowser(WebView appView) {
		this.callbackServer = new CallbackServer();
		this.pluginManager = new PluginManager(appView, this);
		this.mKey = new BrowserKey(appView, this);

		// This creates the new javascript interfaces for PhoneGap
		appView.addJavascriptInterface(this.pluginManager, "PluginManager");
		appView.addJavascriptInterface(this.mKey, "BackButton");
		appView.addJavascriptInterface(this.callbackServer, "CallbackServer");

		this.addService("Geolocation", "com.phonegap.GeoBroker");
		this.addService("Device", "com.phonegap.Device");
		this.addService("Accelerometer", "com.phonegap.AccelListener");
		this.addService("Compass", "com.phonegap.CompassListener");
		this.addService("Media", "com.phonegap.AudioHandler");
		this.addService("Camera", "com.phonegap.CameraLauncher");
		this.addService("Contacts", "com.phonegap.ContactManager");
		this.addService("Crypto", "com.phonegap.CryptoHandler");
		this.addService("File", "com.phonegap.FileUtils");
		this.addService("Location", "com.phonegap.GeoBroker");	// Always add Location, even though it is built-in on 2.x devices. Let JavaScript decide which one to use.
		this.addService("Network Status", "com.phonegap.NetworkManager");
		this.addService("Notification", "com.phonegap.Notification");
		this.addService("Storage", "com.phonegap.Storage");
		this.addService("Temperature", "com.phonegap.TempListener");
	}
        
	/**
	 * Look at activity parameters and process them.
	 */
	private void handleActivityParameters() {

		// If spashscreen
		this.splashscreen = this.getProperty("splashscreen", 0);
		if (this.splashscreen != 0) {
			appView.setBackgroundColor(0);
			appView.setBackgroundResource(splashscreen);
		}

		// If hideLoadingDialogOnPageLoad
		this.hideLoadingDialogOnPageLoad = this.getProperty("hideLoadingDialogOnPageLoad", false);

		// If loadInWebView
		this.loadInWebView = this.getProperty("loadInWebView", false);

		// If loadUrlTimeoutValue
		int timeout = this.getProperty("loadUrlTimeoutValue", 0);
		if (timeout > 0) {
			this.loadUrlTimeoutValue = timeout;
		}
		
		// If keepRunning
		this.keepRunning = this.getProperty("keepRunning", true);

		// If url specified, then load it
		String url = this.getProperty("url", null);
		if (url != null) {
			System.out.println("Loading initial URL="+url);
			this.loadUrl(url);        	
		}
	}
	
    /**
     * Load the url into the webview.
     * 
     * @param url
     */
	public void loadUrl(final String url) {
		System.out.println("loadUrl("+url+")");
		this.url = url;
		int i = url.lastIndexOf('/');
		if (i > 0) {
			this.baseUrl = url.substring(0, i);
		}
		else {
			this.baseUrl = this.url;
		}
		System.out.println("url="+url+" baseUrl="+baseUrl);

		// Init web view if not already done
		if (this.appView == null) {
			this.init();
		}

		// Initialize callback server
		this.callbackServer.init(url);
		
		// If loadingDialog, then show the App loading dialog
		String loading = this.getProperty("loadingDialog", null);
		if (loading != null) {

			String title = "";
			String message = "Loading Application...";

			if (loading.length() > 0) {
				int comma = loading.indexOf(',');
				if (comma > 0) {
					title = loading.substring(0, comma);
					message = loading.substring(comma+1);
				}
				else {
					title = "";
					message = loading;
				}
			}
			JSONArray parm = new JSONArray();
			parm.put(title);
			parm.put(message);
			this.pluginManager.exec("Notification", "activityStart", null, parm.toString(), false);
		}

		final DroidGap me = this;

		// Create a timeout timer for loadUrl
		Runnable runnable = new Runnable() {
			public void run() {
				me.loadUrlTimeout = true;
				try {
					synchronized(this) {
						wait(me.loadUrlTimeoutValue);
					}
				} catch (InterruptedException e) {
					e.printStackTrace();
				}
				
				// If timeout, then stop loading and handle error
				if (me.loadUrlTimeout) {
					me.appView.stopLoading();
					me.onReceivedError(-6, "The connection to the server was unsuccessful.", url);
				}
			}
		};
		Thread thread = new Thread(runnable);
		thread.start();

		// Load URL on UI thread
		this.runOnUiThread(new Runnable() {
			public void run() {
				me.appView.loadUrl(url);
			}
		});
	}
	
	/**
	 * Load the url into the webview after waiting for period of time.
	 * This is used to display the splashscreen for certain amount of time.
	 * 
	 * @param url
	 * @param time				The number of ms to wait before loading webview
	 */
	public void loadUrl(final String url, final int time) {
		System.out.println("loadUrl("+url+","+time+")");
		final DroidGap me = this; 
		Runnable runnable = new Runnable() {
			public void run() {
				try {
					synchronized(this) {
						this.wait(time);
					}
				} catch (InterruptedException e) {
					e.printStackTrace();
				}
				me.loadUrl(url);
			}
		};
		Thread thread = new Thread(runnable);
		thread.start();
	}
	
    /**
     * Load the url into the webview.
     *  
     * @param url
     */
	public void loadSplashScreen(final String url) {
		System.out.println("loadSplashScreen("+url+")");
		this.splashScreenShowing = url;

		// Load URL on UI thread
		final DroidGap me = this;
		Runnable runnable = new Runnable() {
			public void run() {
				me.runOnUiThread(new Runnable() {
					public void run() {
						me.appView.loadUrl(url);
					}
				});
			}
		};
		Thread thread = new Thread(runnable);
		thread.start();
	}

    @Override
    /**
     * Called by the system when the device configuration changes while your activity is running. 
     * 
     * @param Configuration newConfig
     */
    public void onConfigurationChanged(Configuration newConfig) {
    	//don't reload the current page when the orientation is changed
    	super.onConfigurationChanged(newConfig);
    }
    
    /**
     * Get boolean property for activity.
     * 
     * @param name
     * @param defaultValue
     * @return
     */
    protected boolean getProperty(String name, boolean defaultValue) {
    	Bundle bundle = this.getIntent().getExtras();
    	if (bundle == null) {
    		return defaultValue;
    	}
    	Boolean p = (Boolean)bundle.get(name);
    	if (p == null) {
    		return defaultValue;
    	}
    	return p.booleanValue();
    }

    /**
     * Get int property for activity.
     * 
     * @param name
     * @param defaultValue
     * @return
     */
    protected int getProperty(String name, int defaultValue) {
    	Bundle bundle = this.getIntent().getExtras();
    	if (bundle == null) {
    		return defaultValue;
    	}
    	Integer p = (Integer)bundle.get(name);
    	if (p == null) {
    		return defaultValue;
    	}
    	return p.intValue();
    }

    /**
     * Get string property for activity.
     * 
     * @param name
     * @param defaultValue
     * @return
     */
    protected String getProperty(String name, String defaultValue) {
    	Bundle bundle = this.getIntent().getExtras();
    	if (bundle == null) {
    		return defaultValue;
    	}
    	String p = bundle.getString(name);
    	if (p == null) {
    		return defaultValue;
    	}
    	return p;
    }

    /**
     * Get double property for activity.
     * 
     * @param name
     * @param defaultValue
     * @return
     */
    protected double getProperty(String name, double defaultValue) {
    	Bundle bundle = this.getIntent().getExtras();
    	if (bundle == null) {
    		return defaultValue;
    	}
    	Double p = (Double)bundle.get(name);
    	if (p == null) {
    		return defaultValue;
    	}
    	return p.doubleValue();
    }

    /**
     * Set boolean property on activity.
     * 
     * @param name
     * @param value
     */
    protected void setProperty(String name, boolean value) {
    	if (this.appView != null) {
    		System.out.println("Setting property after webview is already initialized - no effect.");
    	}
    	this.getIntent().putExtra(name, value);
    }
    
    /**
     * Set int property on activity.
     * 
     * @param name
     * @param value
     */
    protected void setProperty(String name, int value) {
    	if (this.appView != null) {
    		System.out.println("Setting property after webview is already initialized - no effect.");
    	}
    	this.getIntent().putExtra(name, value);
    }
    
    /**
     * Set string property on activity.
     * 
     * @param name
     * @param value
     */
    protected void setProperty(String name, String value) {
    	if (this.appView != null) {
    		System.out.println("Setting property after webview is already initialized - no effect.");
    	}
    	this.getIntent().putExtra(name, value);
    }
    
    /**
     * Set double property on activity.
     * 
     * @param name
     * @param value
     */
    protected void setProperty(String name, double value) {
    	if (this.appView != null) {
    		System.out.println("Setting property after webview is already initialized - no effect.");
    	}
    	this.getIntent().putExtra(name, value);
    }

    @Override
    /**
     * Called when the system is about to start resuming a previous activity. 
     */
    protected void onPause() {
        super.onPause();
        
        // If app doesn't want to run in background
        if (!this.keepRunning) {
        	
        	// Forward to plugins
        	this.pluginManager.onPause();

        	// Send pause event to JavaScript
        	this.appView.loadUrl("javascript:try{PhoneGap.onPause.fire();}catch(e){};");

        	// Pause JavaScript timers (including setInterval)
        	this.appView.pauseTimers();
        }
    }

    @Override
    /**
     * Called when the activity will start interacting with the user. 
     */
    protected void onResume() {
        super.onResume();

        // If app doesn't want to run in background
        if (!this.keepRunning) {

        	// Forward to plugins
        	this.pluginManager.onResume();

        	// Send resume event to JavaScript
        	this.appView.loadUrl("javascript:try{PhoneGap.onResume.fire();}catch(e){};");

        	// Resume JavaScript timers (including setInterval)
        	this.appView.resumeTimers();
        }
    }
    
    @Override
    /**
     * The final call you receive before your activity is destroyed. 
     */
    public void onDestroy() {
    	super.onDestroy();
    	
    	// Make sure pause event is sent if onPause hasn't been called before onDestroy
       	this.appView.loadUrl("javascript:try{PhoneGap.onPause.fire();}catch(e){};");
    	
    	// Load blank page so that JavaScript onunload is called
       	this.appView.loadUrl("about:blank");
    	    	
    	// Clean up objects
    	if (this.mKey != null) {
    	}
    	
        // Forward to plugins
        this.pluginManager.onDestroy();

    	if (this.callbackServer != null) {
    		this.callbackServer.destroy();
    	}
    }

    /**
     * Add a class that implements a service.
     * 
     * @param serviceType
     * @param className
     */
    public void addService(String serviceType, String className) {
    	this.pluginManager.addService(serviceType, className);
    }
    
    /**
     * Send JavaScript statement back to JavaScript.
     * (This is a convenience method)
     * 
     * @param message
     */
    public void sendJavascript(String statement) {
    	this.callbackServer.sendJavascript(statement);
    }
    
    /**
     * Provides a hook for calling "alert" from javascript. Useful for
     * debugging your javascript.
     */
    public class GapClient extends WebChromeClient {

        private Context ctx;
        
        /**
         * Constructor.
         * 
         * @param ctx
         */
        public GapClient(Context ctx) {
            this.ctx = ctx;
        }

        /**
         * Tell the client to display a javascript alert dialog.
         * 
         * @param view
         * @param url
         * @param message
         * @param result
         */
        @Override
        public boolean onJsAlert(WebView view, String url, String message, final JsResult result) {
            AlertDialog.Builder dlg = new AlertDialog.Builder(this.ctx);
            dlg.setMessage(message);
            dlg.setTitle("Alert");
            dlg.setCancelable(false);
            dlg.setPositiveButton(android.R.string.ok,
            	new AlertDialog.OnClickListener() {
                	public void onClick(DialogInterface dialog, int which) {
                		result.confirm();
                	}
            	});
            dlg.create();
            dlg.show();
            return true;
        }       

        /**
         * Tell the client to display a confirm dialog to the user.
         * 
         * @param view
         * @param url
         * @param message
         * @param result
         */
        @Override
        public boolean onJsConfirm(WebView view, String url, String message, final JsResult result) {
            AlertDialog.Builder dlg = new AlertDialog.Builder(this.ctx);
            dlg.setMessage(message);
            dlg.setTitle("Confirm");
            dlg.setCancelable(false);
            dlg.setPositiveButton(android.R.string.ok, 
            	new DialogInterface.OnClickListener() {
                	public void onClick(DialogInterface dialog, int which) {
                		result.confirm();
                    }
                });
            dlg.setNegativeButton(android.R.string.cancel, 
            	new DialogInterface.OnClickListener() {
                	public void onClick(DialogInterface dialog, int which) {
                		result.cancel();
                    }
                });
            dlg.create();
            dlg.show();
            return true;
        }

    }

    /**
     * WebChromeClient that extends GapClient with additional support for Android 2.X
     */
    public final class EclairClient extends GapClient {

    	private String TAG = "PhoneGapLog";
    	private long MAX_QUOTA = 100 * 1024 * 1024;

    	/**
    	 * Constructor.
    	 * 
    	 * @param ctx
    	 */
    	public EclairClient(Context ctx) {
    		super(ctx);
    	}

    	/**
    	 * Handle database quota exceeded notification.
    	 *
    	 * @param url
    	 * @param databaseIdentifier
    	 * @param currentQuota
    	 * @param estimatedSize
    	 * @param totalUsedQuota
    	 * @param quotaUpdater
    	 */
    	@Override
    	public void onExceededDatabaseQuota(String url, String databaseIdentifier, long currentQuota, long estimatedSize,
    			long totalUsedQuota, WebStorage.QuotaUpdater quotaUpdater)
    	{
    		Log.d(TAG, "event raised onExceededDatabaseQuota estimatedSize: " + Long.toString(estimatedSize) + " currentQuota: " + Long.toString(currentQuota) + " totalUsedQuota: " + Long.toString(totalUsedQuota));

    		if( estimatedSize < MAX_QUOTA)
    		{	                                        
    			//increase for 1Mb
    			long newQuota = estimatedSize;		    		
    			Log.d(TAG, "calling quotaUpdater.updateQuota newQuota: " + Long.toString(newQuota) );
    			quotaUpdater.updateQuota(newQuota);
    		}
    		else
    		{
    			// Set the quota to whatever it is and force an error
    			// TODO: get docs on how to handle this properly
    			quotaUpdater.updateQuota(currentQuota);
    		}		    	
    	}		

    	// console.log in api level 7: http://developer.android.com/guide/developing/debug-tasks.html
    	@Override
    	public void onConsoleMessage(String message, int lineNumber, String sourceID)
    	{       
    		// This is a kludgy hack!!!!
    		Log.d(TAG, sourceID + ": Line " + Integer.toString(lineNumber) + " : " + message);              
    	}

    	@Override
    	public void onGeolocationPermissionsShowPrompt(String origin, Callback callback) {
    		// TODO Auto-generated method stub
    		super.onGeolocationPermissionsShowPrompt(origin, callback);
    		callback.invoke(origin, true, false);
    	}

    }

    /**
     * The webview client receives notifications about appView
     */
    public class GapViewClient extends WebViewClient {

        DroidGap ctx;

        /**
         * Constructor.
         * 
         * @param ctx
         */
        public GapViewClient(DroidGap ctx) {
            this.ctx = ctx;
        }
        
        /**
         * Give the host application a chance to take over the control when a new url 
         * is about to be loaded in the current WebView.
         * 
         * @param view			The WebView that is initiating the callback.
         * @param url			The url to be loaded.
         * @return				true to override, false for default behavior
         */
        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
        	// If dialing phone (tel:5551212)
        	if (url.startsWith(WebView.SCHEME_TEL)) {
        		try {
        			Intent intent = new Intent(Intent.ACTION_DIAL);
        			intent.setData(Uri.parse(url));
        			startActivity(intent);
        		} catch (android.content.ActivityNotFoundException e) {
        			System.out.println("Error dialing "+url+": "+ e.toString());
        		}
        		return true;
        	}
        	
        	// If displaying map (geo:0,0?q=address)
        	else if (url.startsWith("geo:")) {
           		try {
        			Intent intent = new Intent(Intent.ACTION_VIEW);
        			intent.setData(Uri.parse(url));
        			startActivity(intent);
        		} catch (android.content.ActivityNotFoundException e) {
        			System.out.println("Error showing map "+url+": "+ e.toString());
        		}
        		return true;        		
        	}
			
        	// If sending email (mailto:abc@corp.com)
        	else if (url.startsWith(WebView.SCHEME_MAILTO)) {
           		try {
        			Intent intent = new Intent(Intent.ACTION_VIEW);
        			intent.setData(Uri.parse(url));
        			startActivity(intent);
        		} catch (android.content.ActivityNotFoundException e) {
        			System.out.println("Error sending email "+url+": "+ e.toString());
        		}
        		return true;        		
        	}
        	
        	// If sms:5551212
            else if (url.startsWith("sms:")) {
            	try {
            		Intent intent = new Intent(Intent.ACTION_VIEW);
            		intent.setData(Uri.parse(url));
            		intent.putExtra("address", url.substring(4));
            		intent.setType("vnd.android-dir/mms-sms");
            		startActivity(intent);
            	} catch (android.content.ActivityNotFoundException e) {
            		System.out.println("Error sending sms "+url+":"+ e.toString());
            	}
            	return true;
            }  	

        	// If http, https or file
        	else if (url.startsWith("http://") || url.startsWith("https://") || url.startsWith("file://")) {

        		int i = url.lastIndexOf('/');
        		String newBaseUrl = url;
        		if (i > 0) {
        			newBaseUrl = url.substring(0, i);
        		}

        		// If our app or file:, then load into our webview
        		if (this.ctx.loadInWebView || url.startsWith("file://") || this.ctx.baseUrl.equals(newBaseUrl)) {
        			this.ctx.appView.loadUrl(url);
        		}
  		
        		// If not our application, let default viewer handle
        		else {
        			try {
        				Intent intent = new Intent(Intent.ACTION_VIEW);
        				intent.setData(Uri.parse(url));
        				startActivity(intent);
                	} catch (android.content.ActivityNotFoundException e) {
                		System.out.println("Error loading url "+url+":"+ e.toString());
                	}
        		}
        		return true;
        	}
        	
        	return false;
        }
    	
        /**
         * Notify the host application that a page has finished loading.
         * 
         * @param view			The webview initiating the callback.
         * @param url			The url of the page.
         */
        @Override
        public void onPageFinished(WebView view, String url) {
        	super.onPageFinished(view, url);

        	// Clear timeout flag
        	this.ctx.loadUrlTimeout = false;

        	// Try firing the onNativeReady event in JS. If it fails because the JS is
        	// not loaded yet then just set a flag so that the onNativeReady can be fired
        	// from the JS side when the JS gets to that code.
        	appView.loadUrl("javascript:try{ PhoneGap.onNativeReady.fire();}catch(e){_nativeReady = true;}");

    		// If splash screen is showing, clear it
    		if (this.ctx.splashscreen != 0) {
    			this.ctx.splashscreen = 0;
    	    	appView.setBackgroundResource(0);
    		}

        	// Stop "app loading" spinner if showing
        	if (this.ctx.hideLoadingDialogOnPageLoad) {
        		this.ctx.hideLoadingDialogOnPageLoad = false;
        		this.ctx.pluginManager.exec("Notification", "activityStop", null, "[]", false);
        	}

    		// Clear history, so that splash screen isn't there when Back button is pressed
    		WebBackForwardList history = this.ctx.appView.copyBackForwardList();
    		int i = history.getCurrentIndex();
    		if (i > 0) {
    			WebHistoryItem item = history.getItemAtIndex(i-1);
    			if (item.getUrl().equals(this.ctx.splashScreenShowing)) {
    				this.ctx.appView.clearHistory();
    			}
    		}	 
        }
        
        /**
         * Report an error to the host application. These errors are unrecoverable (i.e. the main resource is unavailable). 
         * The errorCode parameter corresponds to one of the ERROR_* constants.
         *
         * @param view 			The WebView that is initiating the callback.
         * @param errorCode 	The error code corresponding to an ERROR_* value.
         * @param description 	A String describing the error.
         * @param failingUrl 	The url that failed to load. 
         */
        @Override
        public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
        	System.out.println("onReceivedError: Error code="+errorCode+" Description="+description+" URL="+failingUrl);

        	// Clear timeout flag
        	this.ctx.loadUrlTimeout = false;

        	// Handle error
        	this.ctx.onReceivedError(errorCode, description, failingUrl);
        }
    }
    
    /**
     * Called when a key is pressed.
     * 
     * @param keyCode
     * @param event
     */
    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {

    	// If back key
    	if (keyCode == KeyEvent.KEYCODE_BACK) {

    		// If back key is bound, then send event to JavaScript
    		if (mKey.isBound()) {
    			this.appView.loadUrl("javascript:document.keyEvent.backTrigger()");
    		}

    		// If not bound
    		else {

    			// Go to previous page in webview if it is possible to go back
    			if (this.appView.canGoBack()) {
    				this.appView.goBack();
    			}

    			// If not, then invoke behavior of super class
    			else {
    				return super.onKeyDown(keyCode, event);
    			}
    		}
    	}

    	// If menu key
    	else if (keyCode == KeyEvent.KEYCODE_MENU) {
    		appView.loadUrl("javascript:keyEvent.menuTrigger()");
    	}

    	// If search key
    	else if (keyCode == KeyEvent.KEYCODE_SEARCH) {
    		appView.loadUrl("javascript:keyEvent.searchTrigger()");
    	}

    	return false;
    }

    /**
     * Any calls to Activity.startActivityForResult must use method below, so 
     * the result can be routed to them correctly.  
     * 
     * This is done to eliminate the need to modify DroidGap.java to receive activity results.
     * 
     * @param intent			The intent to start
     * @param requestCode		Identifies who to send the result to
     * 
     * @throws RuntimeException
     */
    @Override
    public void startActivityForResult(Intent intent, int requestCode) throws RuntimeException {
    	System.out.println("startActivityForResult(intent,"+requestCode+")");
    	if (requestCode == -1) {
    		super.startActivityForResult(intent, requestCode);
    	}
    	else {
    		throw new RuntimeException("PhoneGap Exception: Call startActivityForResult(Command, Intent) instead.");
    	}
    }

    /**
     * Launch an activity for which you would like a result when it finished. When this activity exits, 
     * your onActivityResult() method will be called.
     *  
     * @param command			The command object
     * @param intent			The intent to start
     * @param requestCode		The request code that is passed to callback to identify the activity
     */
    public void startActivityForResult(Plugin command, Intent intent, int requestCode) {
    	this.activityResultCallback = command;
    	super.startActivityForResult(intent, requestCode);
    }

     @Override
    /**
     * Called when an activity you launched exits, giving you the requestCode you started it with,
     * the resultCode it returned, and any additional data from it. 
     * 
     * @param requestCode		The request code originally supplied to startActivityForResult(), 
     * 							allowing you to identify who this result came from.
     * @param resultCode		The integer result code returned by the child activity through its setResult().
     * @param data				An Intent, which can return result data to the caller (various data can be attached to Intent "extras").
     */
     protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
    	 super.onActivityResult(requestCode, resultCode, intent);
    	 Plugin callback = this.activityResultCallback;
    	 if (callback != null) {
    		 callback.onActivityResult(requestCode, resultCode, intent); 
    	 }        
     }
   
     /**
      * Report an error to the host application. These errors are unrecoverable (i.e. the main resource is unavailable). 
      * The errorCode parameter corresponds to one of the ERROR_* constants.
      *
      * @param errorCode 	The error code corresponding to an ERROR_* value.
      * @param description 	A String describing the error.
      * @param failingUrl 	The url that failed to load. 
      */
     public void onReceivedError(int errorCode, String description, String failingUrl) {
    	 final DroidGap me = this;

    	 // Stop "app loading" spinner if showing
    	 me.pluginManager.exec("Notification", "activityStop", null, "[]", false);

    	 // If errorUrl specified, then load it
    	 final String errorUrl = me.getProperty("errorUrl", null);
    	 if ((errorUrl != null) && errorUrl.startsWith("file://") && (!failingUrl.equals(errorUrl))) {

    		 // Load URL on UI thread
    		 me.runOnUiThread(new Runnable() {
    			 public void run() {
    				 me.appView.loadUrl(errorUrl);
    			 }
    		 });
    	 }

    	 // If not, then display error dialog
    	 else {
    		 me.appView.loadUrl("about:blank");
    		 me.displayError("Application Error", description + " ("+failingUrl+")", "OK", true);
    	 }
     }

     /**
      * Display an error dialog and optionally exit application.
      * 
      * @param title
      * @param message
      * @param button
      * @param exit
      */
     public void displayError(final String title, final String message, final String button, final boolean exit) {
    	 final DroidGap me = this;
    	 me.runOnUiThread(new Runnable() {
    		 public void run() {
    			 AlertDialog.Builder dlg = new AlertDialog.Builder(me);
    			 dlg.setMessage(message);
    			 dlg.setTitle(title);
    			 dlg.setCancelable(false);
    			 dlg.setPositiveButton(button,
    					 new AlertDialog.OnClickListener() {
    				 public void onClick(DialogInterface dialog, int which) {
    					 dialog.dismiss();
    					 if (exit) {
    						 me.finish();
    					 }
    				 }
    			 });
    			 dlg.create();
    			 dlg.show();
    		 }
    	 });
     }
}