CODEWITHSUNDEEP
androidandroid-asynctask
RajaReddy PolamReddy
RajaReddy PolamReddy

Reputation: 22493

Android AsyncTask Can't create handler inside thread that has not called Looper.prepare()?

Why i am getting this error when i use this code in the asynctask even i am using runOnUiThread() this is the code i am using ( i am using fragments ).

private class GmailXMPP_AfterLogin extends AsyncTask<AfterLogging, Void, Void> {

    private ProgressDialog _dialog;

    @Override
    protected void onPreExecute() {          
        super.onPreExecute();
        _dialog = new ProgressDialog(getActivity());     
        _dialog.setCancelable(false);
        _dialog.setTitle("colors");
        //((ProgressDialog)dialog).setIcon(R.drawable.icon);
        _dialog.setMessage("Your content is loading.. \nPlease wait..");
        _dialog.setIndeterminate(false);         
        _dialog.show();
        //ProgressBar_show();
        Log.i(TAG, " GmailXMPP_AfterLogin onPreExecute" );
    }

    @Override
    protected void onPostExecute(Void feed) {
        //ProgressBar_hide();       
        _dialog.dismiss();
        Log.i(TAG, " GmailXMPP_AfterLogin onPostExecute" );
    }

    @Override
    protected Void doInBackground(AfterLogging... arg0) {

        Log.i(TAG, " GmailXMPP_AfterLogin doInBackground" );
        AfterLogging after = arg0[0];
        final XMPPConnection _connection = after.getConn();
        final String Uname = after.getAcc_Name();

                //synchronized (contactJids) {
        Roster roster = Gtalk_xmpp_client.getRoster();
        String file_name;
        for (RosterEntry entry : roster.getEntries()) {
            if (entry.getType() == ItemType.to || entry.getType() == ItemType.both) {

                boolean yes = Contact_data_source.checkUsername(entry.getUser());
                Log.i(TAG, "Con=" + yes);
                if (!yes) {

                    Bitmap buddy_img = buddyImage(entry, _connection);
                    if (buddy_img != null)
                        file_name = Store(buddy_img);
                    else
                        file_name = "";
                    if (entry.getName() == null)
                        Contact_data_source.createContact( entry.getUser(), entry.getUser(), Uname, file_name, UsedStrings.GoogleAccount );
                    else
                        Contact_data_source.createContact( entry.getName(), entry.getUser(), Uname, file_name, UsedStrings.GoogleAccount );
                } else {
                    Log.i(TAG, "Con=exist");
                }
            }
        }               
        return null;
    }
 }

logcat shows 

12-01 11:59:21.549: E/AndroidRuntime(16595): FATAL EXCEPTION: AsyncTask #1
12-01 11:59:21.549: E/AndroidRuntime(16595): java.lang.RuntimeException: An error occured while executing doInBackground()
12-01 11:59:21.549: E/AndroidRuntime(16595):    at android.os.AsyncTask$3.done(AsyncTask.java:200)
12-01 11:59:21.549: E/AndroidRuntime(16595):    at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:274)
12-01 11:59:21.549: E/AndroidRuntime(16595):    at java.util.concurrent.FutureTask.setException(FutureTask.java:125)
12-01 11:59:21.549: E/AndroidRuntime(16595):    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:308)
12-01 11:59:21.549: E/AndroidRuntime(16595):    at java.util.concurrent.FutureTask.run(FutureTask.java:138)
12-01 11:59:21.549: E/AndroidRuntime(16595):    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1088)
12-01 11:59:21.549: E/AndroidRuntime(16595):    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:581)
12-01 11:59:21.549: E/AndroidRuntime(16595):    at java.lang.Thread.run(Thread.java:1019)
12-01 11:59:21.549: E/AndroidRuntime(16595): Caused by: java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()
12-01 11:59:21.549: E/AndroidRuntime(16595):    at android.os.Handler.<init>(Handler.java:121)
12-01 11:59:21.549: E/AndroidRuntime(16595):    at android.app.Dialog.<init>(Dialog.java:101)
12-01 11:59:21.549: E/AndroidRuntime(16595):    at android.app.AlertDialog.<init>(AlertDialog.java:63)
12-01 11:59:21.549: E/AndroidRuntime(16595):    at android.app.ProgressDialog.<init>(ProgressDialog.java:80)
12-01 11:59:21.549: E/AndroidRuntime(16595):    at android.app.ProgressDialog.<init>(ProgressDialog.java:76)
12-01 11:59:21.549: E/AndroidRuntime(16595):    at com.pipemedia.fragments.ChatAccountsFragment$GmailXMPP_AfterLogin.onPreExecute(ChatAccountsFragment.java:372)
12-01 11:59:21.549: E/AndroidRuntime(16595):    at android.os.AsyncTask.execute(AsyncTask.java:391)
12-01 11:59:21.549: E/AndroidRuntime(16595):    at com.pipemedia.fragments.ChatAccountsFragment.Gtalk_logInComplete(ChatAccountsFragment.java:435)
12-01 11:59:21.549: E/AndroidRuntime(16595):    at com.pipemedia.xmpp.GmailXmppClient.Login(GmailXmppClient.java:60)
12-01 11:59:21.549: E/AndroidRuntime(16595):    at com.pipemedia.fragments.ChatAccountsFragment$GmailXMPP.doInBackground(ChatAccountsFragment.java:337)
12-01 11:59:21.549: E/AndroidRuntime(16595):    at  com.pipemedia.fragments.ChatAccountsFragment$GmailXMPP.doInBackground(ChatAccountsFragment.java:1)
12-01 11:59:21.549: E/AndroidRuntime(16595):    at android.os.AsyncTask$2.call(AsyncTask.java:185)
12-01 11:59:21.549: E/AndroidRuntime(16595):    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:306)
12-01 11:59:21.549: E/AndroidRuntime(16595):    ... 4 more

this is the line creating error 

line 372 : progress_dialog = new ProgressDialog(getActivity());

Upvotes: 2

Views: 8122

Answers (4)

kumar
kumar

Reputation: 691

Create 

progressDialog = ProgressDialog.show(SplashScreen.this, "Please wait...", "Porcessing ...", true);

in Activity class where you are launching AsyncTask.

Upvotes: 0

coocood
coocood

Reputation: 1396

Probablly you called AsyncTask.execute() in a background thread.

You can only execute AsyncTask in UI thread.

Upvotes: 4

AndroidLearner
AndroidLearner

Reputation: 4636

If you want to show a progress dialog in ongoing task which is already run in the thread then try this way.May it helps to you ::

Handler mHandler=new Handler();

mHandler.post(new Runnable() 
{
     public void run()
     {
          //SHOW PROGRESS DIALOG HERE                           
     }
});

Upvotes: 0

appukrb
appukrb

Reputation: 1507

asynctask is a thread which run in background and update the ui thread only one time at last when it finish but runnable thread is not like asynctask, runnable thread calls the handler to updated the ui thread in a loop so you cannot put handler inside the asynctask.

Upvotes: 0

Related Questions