Android - Adding and showing items to ListView one at a time using an ArrayAdapter -


I am using an array adapter to add items to a custom list view and show results in my Android app. The problem I am facing is that ArrayAdapter waits for this wait until all the items are there before it appears in the scene. To say this, when I'm adding an item to the array adapter and I inform that DataAetChanged, then it does not update the ListView to show the added item. It waits till all items are added and GetView is called before showing the items.

I would like to do this showing the list immediately after adding the list to Vieu. Is this possible?

I believe the relevant code is the following:

  r_adapter = New Reminder Adapter (Activity Link Search, this, R.Let Search, ListTime, MyList); ListView.setAdapter (r_adapter); ... r_adapter.notifyDataSetChanged (); R_adapter.clear (); For (int i = 0; i  

As you can see, even though I am notifying DataSetChanged after the add method, it does not actually update the view. After the loop is over, the scene has finally been updated (depending on what I know, because this part of the code is not called GetView).

I did not try to override the method of my custom aradapté with any luck, because I do not have a view in this method.

Any help would be welcome :)

Bara

< P> The Android UI is single-threaded. Whenever you add an entry to the adapter, you are not re-controlling the Android app from the main app threads. Therefore, Android does not get the chance to display your entries until you return control, and you are not doing it until you have completely adapted your adapter.

A AsyncTask

  / *** Copyright (c) 2008-2012 Commonsver, LLC is licensed under the Apache License. , Version 2.0 (the "License"); You can not use this file except for compliance with the license. You can obtain a copy of the license at http://www.apache.org/licenses/LICENSE-2.0. Unless required by applicable law or agreed in writing, the software distributed under the license is distributed on "as is" basis, either express or implied, without warranty or conditions of any kind. View licenses for specific language administration permissions and limitations under license; Guide to Android Development - http://commonsware.com/Android * / package com.commonsware.android.async with a comprehensive codec guide; Import android.app.ListActivity; Import Android.os.AsyncTask; Importroid.os.Bundle; Import android.os.SystemClock; Import android.widget.ArrayAdapter; Import android.widget.Toast; Import java.util.ArrayList; Public class asyncdimo list activation {Private Stable Last String} Item = {"Larem", "Aspirum", "Dollar", "Seat", "AMT", "Publishing", "Adipissing", "Elite", "Morbi" , "Velvet", "Alveti", "Mouli", "Atyam", "Vel", "Erat" Sodales "," Platte "," Ex "," Portrait "," Wall "," Laguella "," Vite " , "Paildesk", "Agu", "Male"}; Override Public Zero on @Create (Bundled Saved Instance) {Super. ; SetContentView (R.layout.main); SetListAdapter (New ArrayEptter & lt; String & gt; (this, Android .RetLink.Simple_listI_item, New Arrayist & lt; string & gt; ()); New AddStringTask () Execute ();} Class AddStringTask asyncTask and lt; zero, string, zero, and gt; {@Override Safe Voice Doine Background (Zero ... unused) {for {string item: items} {published progress (item); SystemClock.sleep (200);} Return (empty);} @SuppressWarnings ("uncheck") @ Override Protected Zero Promotion Improve E (String ... items) {((Array adapter & lt; string & gt;) getListAdapter ()). Add (item [0]); } @ Override Protected Zero at PostXextack (zero unused) {Toast. Make text (asyncdimo.es, "don!", Toast. LNNHTHRART). Show (); }}}  

Comments

Popular posts from this blog

oracle - The fastest way to check if some records in a database table? -

php - multilevel menu with multilevel array -

jQuery UI: Datepicker month format -