Android: how to update UI dynamically?

Posted by pandre on Stack Overflow See other posts from Stack Overflow or by pandre
Published on 2011-11-24T09:38:42Z Indexed on 2011/11/24 9:50 UTC
Read the original article Hit count: 205

Filed under:

android

|

asynchronous

|

asynctask

I have an Android app and I need to change UI dynamically:
ex: when user presses a button, I want to change the current activity's views and, as in some cases there are a lot of views involved, I need to display a ProgressDialog.

I have been using an AsyncTask, but I think that it is not the best solution, because AsyncTask's doInBackground runs a different thread, so I can't update UI from there - I have to use runOnUiThread, which runs the code in the UI Thread, but freezes the progress dialog that is shown.

I guess there should be more people with similar issues, as updating UI while displaying a ProgressDialog seems to be something done regularly by applications.

So does anyone have a solution to this?

© Stack Overflow or respective owner

Related posts about android

Please verify my layout: bottom button keeps coming up over keyboard

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi everyone, I have a layout which does almost what I want. There's just one bug regarding the button at the bottom. I should stay at the bottom at all times. But whenever I bring up the soft-keyboard the button will be displayed above the keyboard. This is not what I want but it should become covered… >>> More
Android programming. Application stopped unexpectedly.

as seen on Stack Overflow - Search for 'Stack Overflow'
I've just created a prototype of interface for my android app and tried to run it. Unfortunately I get an error that my app has stopped unexpectedly (my reputation doesn't allow me to post images so follow my links): screenshot of error message This is layout mode of editing. Everything looks as… >>> More
Listview Row Overlap Problem

as seen on Stack Overflow - Search for 'Stack Overflow'
I just updated my app and I am getting some odd complaints from people who update it. I am only getting complaints from people with non-stock android phones (phones that manufacturers have modified...HTC phones, cliq, pulse, etc), other phones like the Droid, Nexus work fine. My app (Photo Frame Deluxe)… >>> More
Why are some of my view not aligned correctly at the bottom of my relative layout?

as seen on Stack Overflow - Search for 'Stack Overflow'
I have problems getting some of my views aligned in a relative layout that I use inside a row of my listview. Here is a screenshot from the layout builder in Eclipse, this is what I think it should look like: The next image is from the emulator. Now the TestTestTest View is at the top and covers… >>> More
Android RatingBar weirdness: Whenever I add a RatingBar to my layout, a bunch of the generated tags,

as seen on Stack Overflow - Search for 'Stack Overflow'
Whenever I use a RatingBar view in my layout, I suddenly get all kinds of compile errors. I'm using Android 2.0, but I've also tried 2.0.1, and 2.1, without joy. I also get a message: Shader 'android.graphics.BitmapShader' is not supported in Layout Editor, and an odd warning which may or maynot be… >>> More

Related posts about asynchronous

What is asynchronous image downloading?

as seen on Stack Overflow - Search for 'Stack Overflow'
I have too many images to be download from net into iPhone? How can I build an application using asynchronous image downloading?. >>> More
Asynchronous PHP request (not AJAX)

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi I am developing an eshop application. I am using webservice to create Order in Oracle database and websvc will give a response (OrderNumber) and I will inform customer that his Order (OrderNumber) is generated My problem The creation of order is taking too much time in backend system and user is… >>> More
Asynchronous operations performance

as seen on Stack Overflow - Search for 'Stack Overflow'
One of the features of asynchronous programming in .NET is saving threads during long running operation execution. The FileStream class can be setup to allow asynchronous operations, that allows running (e.g.) a copy operation without virtually using any threads. To my surprise, I found that running… >>> More
Calling Web Service Functions Asynchronously from a Web Page

as seen on ASP.net Weblogs - Search for 'ASP.net Weblogs'
Over on the Asp.Net forums where I moderate, a user had a problem calling a Web Service from a web page asynchronously. I tried his code on my machine and was able to reproduce the problem. I was able to solve his problem, but only after taking the long scenic route through some of the more perplexing… >>> More
C# 5 Async, Part 1: Simplifying Asynchrony – That for which we await

as seen on Reed Copsey - Search for 'Reed Copsey'
Today’s announcement at PDC of the future directions C# is taking excite me greatly. The new Visual Studio Async CTP is amazing. Asynchronous code – code which frustrates and demoralizes even the most advanced of developers, is taking a huge leap forward in terms of usability. This… >>> More