I have an Activity that uses tabs, and the tabs switch Fragments. The problem is that the Fragment take a few seconds to load when being created, thus switching tabs has a delay of about 1 or 2 seconds. To fix this I have been trying to find a way to display a simple Loading graphic or even a progress dialog, so that the tab changes instantly and displays something indicating things are loading until everything completes.
My onCreateView
method of the Fragment looks like this:
FrameLayout fl;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
fl = (FrameLayout) inflater.inflate(R.layout.text_layout, container, false);
doHeavyStuff();
return fl;
}
I tried putting doHeavyStuff()
in onStart()
but that did not help anything. And a Thread won't help because doHeavyStuff()
involves manipulating views/GUI.
Any ideas on how I can display the Fragment and display "Loading" information while everything else loads?
Thanks!
Matt.
In the onActivityCreated()
:
progress bar
(or any progress showing UI element/s).HeavyStuffDoingAsyncTask
which is explained below.HeavyStuffDoingAsyncTask should have:
doHeayStuff()
's logic which doesn't update ui in the doInBackground
method.publishProgress()
from doInBackground()
everytime you want to update the ui.onProgressUpdate
method.onPostExecute
method.Good Luck.