Android :: Fetching Data From Internet In Background And Showing ProgressDialog Or ProgressBar
Jan 21, 2010
I am developing an application which require accessing a website for data, and will show that data on device. I wants to fetch data from Internet in background and show ProgressDialog or ProgressBar on
device and when application receive response from server app will dismiss the dialog or bar and will show data .
For this i am using AsyncTask -
code for AsyncTask is as follows--
CODE:..........
And calling this code as follows--
CODE:...........
But ProgressDialog is not shown.(I guess the reason for it is the thread is not complete and android invalidate only when thread has completed).
My Questions-
1- If my guess is right ? If yes then how I should implement it?
2- If there is any other better way to do this?
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Mar 16, 2010
How I'm able to do what I've written in the topic. I've looked through many tutorials on AsyncTask but I can't get it to work. I have a little form (EditText) that will take what the user inputs there and make it to a url query for the application to lookup and then display the results.
What I think would seem to work is something like this: In my main activity i have a string called responseBody. Then the user clicks on the search button it will go to my search function and from there call the GrabUrl method with the url which will start the asyncdata and when that process is finished the onPostExecute method will use the function activity.this.setResponseBody(content).
This is what my code looks like simpliefied with the most important parts (I think).
CODE:.......................
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Oct 19, 2010
my application is not a service, it's a normal application, with some windows and some stuff. i dont wanna make it a service cos is too munch complicated and i prefeer to avoid it then, if my application is not a service, when it goes to background (home key pressed for example), it continues working (sending/getting data from internet)? i ask this because i read this on a developer guide tutorial: "Because an Activity can perform actions only while it is active and in focus, you should create your status bar notifications from a Service"
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Oct 8, 2010
I am developing my first Android App and I need a ProgressDialog to be showed while a background task, in this case just a http call on the server, happens.
I did a bit of studying on this and also have already checked other threads related to this subject.
http://developer.android.com/reference/android/os/AsyncTask.html
[url]
[url]
[url]
Among others.
Than I got to write a bit of code:
1) In My Activity I declare a variable to be of type ProgressDialog
code:............
2) I have also written an inner class to extend AsyncTask as required, here in the doInBackGround is where I call a static method which actually do the POST http request to the server, in the server side I have blocked the server response 20s to validate the progress dialog.
code:............
3) When the button is pressed I than build the ProgressDialog anc call the AsyncTask I have created:
code:...................
Well, this is it, I believe this was suppose to show a progress dialog while the AsyncTask would query the server in background, but what I get is NO progress bar until server response arrives and than for a fraction of time(less than 1 second) the progress shows and the next Activity is called.
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Aug 31, 2010
I working on the app where I get the data from the server using rest call and add it to the view. I get all the initial data correctly. I use AsyncTask for doing it. Now I want to periodically (say 2 mins) fetch the new data from the server and add it to view.Periodically fetching data (polling) from the server in Android.
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I have to develop one android native application.Here i have to fetch the value from mysql database and display on android edittext and spinner box.
I have to run the app means the value is fetching from database and displayed on android edittext.but not display on spinner box.How can i display the value on android spinner box fetching from mysql database.I have used the below webservice code:
Quote:
public class DisplayProfile {
public String customerData(String Username,String Bcountry){
String customerInfo = "";[code].....
Why am getting the above error?how can i resolve the above error ???? how can i display the fetching data on spinner box list on first item...
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Anyone else having this issue or any advice?
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am developed one app..here am using json webservices for fetching data from database...Here am used dis coding part:
<?php
$r=mysql_connect("localhost","root","");
mysql_select_db("xcart",$r);
[Code]....
dis is successfully worked in localhost..then am connecting my coding means its displayederror in logcat..the error is json array exception not converted to json array ..how it is diplayed..i konw my coding part having error..so ly it is displayed...
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I am using the code:
CODE:.................
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I have the layout built:
CODE:............
Image downloaded from the internet goes here. Needs to be updated every evening at midnight or unless the button below is pressed. Now if I could only figure out exactly how to do this, life would be good."
CODE:................
Got the provider xml bulit:
CODE:.................
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CODE:............
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