Also, if you just want to dismiss the window after a timeout, you don't need to use a thread at all, just create a Handler in the current (main thread) and post a delayed message or runnable to it. See the use of sendMessageDelayed() here for an example:
http://code.google.com/android/samples/ApiDemos/src/com/example/android/apis/app/RemoteService.html On Oct 6, 8:33 am, "Romain Guy" <[EMAIL PROTECTED]> wrote: > Hi, > > You can use threads but all the views, and all the views related APIs, > must be invoked from the main thread (also called UI thread.) To do > this from a background thread, you need to use a Handler. A Handler is > an object that will post messages back to the UI thread for you. You > can also use the various post() method from the View class as they > will use a Handler automatically. In your case, you could do something > like this: > > private Handler mHandler; > > protected void onCreate(Bundle saved) { > mHandler = new Handler(); > > } > > // In your Thread > public void run() { > // ... > mHandler.post(new Runnable() { > public void run() { popup.dismiss(); } > }); > > } > > You can also look at the class called UserTask from the > apps-for-android > project:http://code.google.com/p/apps-for-android/source/browse/trunk/Photost... > > It makes threading/UI interactions even easier. > > > > On Mon, Oct 6, 2008 at 8:25 AM, Falko Richter <[EMAIL PROTECTED]> wrote: > > Hello everyone, > > > I first have a general question if threaded programming is possible with the > > Android Platform? > > > Secondly I have a specific problem. I have an application that gives the > > user feedback with a "PopupWindow". By standart the Popup disappears then > > the user clicks somewhere on the screen. I want to make the popup > > automatically after X millisecond, so I programmed myself a little thread: > > > package com.fon; > > import android.util.Log; > > > public class PopupThread extends Thread { > > fonPopupWindow popup; > > long millis; > > > public PopupThread(fonPopupWindow popup) { > > this.popup = popup; > > } > > > public void run() { > > try { > > sleep(millis); > > popup.dismiss(); > > } > > catch(InterruptedException e) { > > } > > } > > } > > > but everytime the thread tries to dismiss my popup, I get the following > > exception: > > > android.view.ViewRoot$CalledFromWrongThreadException: Only the original > > thread that created a view hierarchy can touch its views. > > > From what I understand, this tells me that I cannot access something outside > > the new created Thread, and therefore my plan is immpossible to solve on > > Android. > > > Thx for suggestions > > > Falko > > -- > Romain Guywww.curious-creature.org --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Developers" 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-developers?hl=en -~----------~----~----~----~------~----~------~--~---
