Question

I have a little problem… I have made an Android application which extends the webview. The webview Html page with a map on like this: Map example, it was also here I got my inspiration. My onCreate method looks like this:

super.onCreate(savedInstanceState);

         //Removes the title bar in the application
         requestWindowFeature(Window.FEATURE_NO_TITLE);
         setContentView(R.layout.main);
         
         //Creation of the Webview found in the XML Layout file
         browserView = (WebView)findViewById(R.id.webkit);

         //Removes both vertical and horizontal scroll bars 
         browserView.setVerticalScrollBarEnabled(false);
         browserView.setHorizontalScrollBarEnabled(false);
         
        
         myLocationManager=(LocationManager)getSystemService(Context.LOCATION_SERVICE);
         //Enable Javascripts
      
         url = "http://www.my-homepage.dk/map_example.html";
         
         browserView.getSettings().setJavaScriptEnabled(true);

         
         //The website which is wrapped to the webview
        
         browserView.loadUrl(url);

So when My application gets a GPS location, it invokes this method:

LocationListener onLocationChange=new LocationListener() {
 
 
  public void onLocationChanged(Location location) {
 
 
 StringBuilder buf=new StringBuilder(url);
 
 buf.append("?");
 buf.append("lon=");
 buf.append(String.valueOf(location.getLongitude()));
 buf.append("&");
 buf.append("lat=");
 buf.append(String.valueOf(location.getLatitude()));
     
    browserView.loadUrl(buf.toString());
 
 }

So it basically just loads another URL…. But, my problem is, 1. it keeps the orignal website "map image", i imagined it would "unload" the page, and 2. When the second url is loaded, it takes quite a long time before it is finished, and when i am testing on my HTC Desire, it sometimes doesnt show the second loaded page (the map with location) before it turns the screen off and lock, or if i go out and in the application, that sometimes helps too…

Hope you can help 🙂

Answer 1

A suggestion – in onLocationChanged, make locationFound(); the first statement instead of the last.

It would be good to stop the listener immediately, as the loadUrl statement could take some time to complete, while the provider could be sending more updates.