If you are using Android 1.5/Cupcake, you should definitely use android.os.AsyncTask.
On Mon, Apr 20, 2009 at 7:44 AM, Arnaud Weber <[email protected]> wrote: > You shall get a book or look on internet, there are some examples. > Don't hesitate also to look in source code of open source projects. like in > code.google. http://code.google.com/hosting/search?q=android&projectsearch=Search+projects > > What you're looking for is a handler. > Look in the Handler object documentation. Handlers are the nicest way to > send information back to your calling thread. > > > Besides, here is a helper class i'm often using : > > package com.webyourdailyway.utils; > import java.io.IOException; > import org.apache.http.HttpResponse; > import org.apache.http.client.ClientProtocolException; > import org.apache.http.client.HttpClient; > import org.apache.http.client.HttpResponseException; > import org.apache.http.client.methods.HttpUriRequest; > import org.apache.http.impl.client.BasicResponseHandler; > import android.os.Handler; > import android.os.Message; > import android.util.Log; > public class HttpRunnable implements Runnable { > public static final int MESSAGE_OK = 0x01; > public static final int MESSAGE_ERROR = 0x02; > > public final HttpClient client; > public final HttpUriRequest request; > public final Handler handler; > public HttpRunnable(HttpClient client, HttpUriRequest request, > Handler handler) { > super(); > this.client = client; > this.request = request; > this.handler = handler; > } > public void run() { > try { > BasicResponseHandler responseHandler = new > BasicResponseHandler() { > public String handleResponse(HttpResponse response) > throws HttpResponseException, IOException { > String resp = super.handleResponse(response); > Message msg = new Message(); > msg.what=MESSAGE_OK; > resp = new String(resp.getBytes(),"UTF-8"); > msg.obj = resp; > handler.sendMessage(msg); > return resp; > } > }; > client.execute(request, responseHandler); > > } catch (ClientProtocolException e) { > Log.e("HTTP_TEST", "Couldn't connect to " + request.getURI(), > e); > Message msg = new Message(); > msg.what=MESSAGE_ERROR; > msg.obj = e.getLocalizedMessage(); > handler.sendMessage(msg); > } catch (IOException e) { > Log.e("HTTP_TEST", "Couldn't connect to " + request.getURI(), > e); > Message msg = new Message(); > msg.what=MESSAGE_ERROR; > msg.obj = e.getLocalizedMessage(); > handler.sendMessage(msg); > } > } > } > > You use it like that : > client = new DefaultHttpClient(); > > String url = your url... ; > Log.d("Network","calling url "+url); > HttpUriRequest request = new HttpGet(url); > Handler handler = new Handler(){ > public void handleMessage(Message msg) { > super.handleMessage(msg); > //Here is the piece of code executed in your main thread > when the http has been returned. > } > }; > HttpRunnable runnable = new HttpRunnable(client, request, handler); > Thread thread = new Thread(runnable); > thread.start(); > > 2009/4/20 kungfuslippers <[email protected]> >> >> Hi, >> >> I understand that if you want to display UI stuff from other than the >> main thread i.e. a separate thread - you can use some form of Handler >> classes post() method(s) to put a Dialog display (for example) in the >> event queue? >> >> Can anyone point me to some sample code or to where the usage is >> defined in the API docs? >> >> thanks >> >> >> >> > > > > > -- Romain Guy Android framework engineer [email protected] Note: please don't send private questions to me, as I don't have time to provide private support. All such questions should be posted on public forums, where I and others can see and answer them --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Beginners" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-beginners?hl=en -~----------~----~----~----~------~----~------~--~---
