Hi, the reason i block the thread is that i need wait the end of the thread before execute other methods (delete synchronized data), if i don't use block thread's method (join or synchronized), the delete methods will be executed before the thread. That's why i block the thread.
I just used your class, i got the same result as not using block method, the delete method execute before my synchronize method. PS, your UserTask class has a good documentation. On 12 sep, 18:15, "Romain Guy" <[EMAIL PROTECTED]> wrote: > Yes, but if you wait, you block. Don't block the UI thread :) It is > much better to have the background thread post a message to a Handler > when it's done. I suggest you to use this class to perform your > threading > work:http://code.google.com/p/apps-for-android/source/browse/trunk/Photost... > > > > On Fri, Sep 12, 2008 at 12:40 AM, roland <[EMAIL PROTECTED]> wrote: > > > Thanks for response, is there some other ways to wait the end of a > > thread? > > > On 11 sep, 17:50, "Romain Guy" <[EMAIL PROTECTED]> wrote: > >> By calling join() on the UI thread, you are blocking the UI thread. > >> It's as if you were not using a background thread. That's why the > >> ProgressDialog cannot be displayed. > > >> On Thu, Sep 11, 2008 at 3:06 AM, roland <[EMAIL PROTECTED]> wrote: > > >> > Hello, i have a question of displaying a ProgressDialog by joining the > >> > threads. In my application, i will synchronize data with the server, > >> > and remove the synchronized data from database. The synchronization > >> > takes long time, so i decide to display a progressdialog during this > >> > process. Of course i use a new thread to deal the synchronization, > >> > here is what i use for the first time: > > >> > syncProgressDialog = ProgressDialog.show(Function.getContext(), > >> > "Please wait...", "Synchronizing application's data...", true, false); > > >> > new Thread(new Runnable() { > >> > public void run() { > >> > synchronize(); > >> > syncProgressDialog.dismiss(); > >> > } > >> > }).start(); > > >> > removeData(); > > >> > The problem i met with this solution is the main thread didn't launch > >> > this thread immediately, it called the removeData before the new > >> > Thread. Apparently the main thread don't wait the new Thread finishes > >> > before execute the following method. So i changed this solution to : > > >> > syncProgressDialog = ProgressDialog.show(Function.getContext(), > >> > "Please wait...", "Synchronizing application's data...", true, false); > > >> > Thread thread = new Thread(new Runnable() { > >> > public void run() { > >> > synchronize(); > >> > syncProgressDialog.dismiss(); > >> > } > >> > }); > >> > thread.start(); > >> > try { > >> > thread.join(); > >> > } > >> > catch (InterruptedException e) { > >> > e.printStackTrace(); > >> > } > > >> > removeData(); > > >> > I used the join method to wait the end of synchronize thread before > >> > removeData, there is another problem comes, the ProgressDialog didn't > >> > display on the screen. I tried use handler: > > >> > Thread thread = new Thread(new Runnable() { > >> > public void run() { > >> > synchronize(); > >> > handler.post(new Runnable() { > >> > public void run() { > >> > removeDialog(); > >> > } > >> > }); > >> > } > >> > }); > > >> > private void removeDialog() { > >> > syncProgressDialog.dismiss(); > >> > } > > >> > Nothing changed, could anyone show me a sample code to display the > >> > ProgressDialog in a joined thread or tell me which part i didn't > >> > implemented correctly. > > >> -- > >> Romain Guywww.curious-creature.org > > -- > 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 -~----------~----~----~----~------~----~------~--~---
