Hi Johannes,

i think when your list data is in process fetch from server, you can create
your listview or other widgets on activity.only you have make sure after
thread which one fetching data from server will send message to your ui
thread about completion dat fetching. and then on resume you can call your
listview adapter notifydatasetchanged. and while your data fetching thread
is in progress you can show progress dialog.as far as i concerned this
solution will atleast show your list acivity loaded after progess dialog is
dissapear

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Thanks & Regards,
Kapil Lokhande | Dexter Advisory Pvt. Ltd. <http://dexterltd.com/> | Android
Developer
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On Thu, Dec 23, 2010 at 2:44 PM, Johannes De Smedt <
johannes.desm...@gmail.com> wrote:

> I have an application that loads a list of items with thumbnails from
> a server, and shows those items in a ListView.
>
> The laoding of the data is done before the ListViewActivity is started
> and while that is being done, a ProgressDialog is shown. When the
> loading of the data is done, I start an activity with a ListView that
> displays the items. The thumbnails are downloaded in a seperate thread
> when they are needed in the getView method of ListView.
>
> This is my problem: When the loading of the data is done, I call
> startActivity with an Intent to start the ListActivity and in that
> intent I put the data.
> My problem is that this takes a few seconds sometimes. How can I speed
> this up?
>
> Below is the sequence + where it goes wrong:
>
> The items are downloaded with an AsyncTask that shows a
> ProgressDialog.
> The progressDialog is dissmissed, and startactivity is called.
>
> Intent in = new Intent(CategoryListScreen.this,
> VideoListScreen.class);
> in.putParcelableArrayListExtra("items", items);
> startActivity(in);
>
> The listAdapter is created in the onCreate method of my
> VideoListScreen
> getView is called a few times...
> The VideoListScreen is displayed (a few seconds after the
> progressDialog has been dissmissed)
>
> Also the Logcat output from the ActivityManager indicates it takes a
> few seconds for my activity to start:
> E.g:
> 10:13:22.254 - ActivityManager - Starting activity: VideoListScreen
> 10:13:25.424 - ActivityManager - Displayed activity: VideoListScreen:
> 3166 ms
>
> How can I make that the activity is displayed faster?
>
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