Yea, went through the document and got good understanding of activities & tasks.
I observed one issue though (Not sure if its an issue, maybe I need to call some other functions). In my first list A, I selected one item using Keys. This leads to create another list Activity B. I just browsed the list using Key, so that one element will be highlighted (focussed). These activities are created with Launch mode "singleTop" Then I went to the Home Screen. Now on selecting my Activity Icon again, I got the list Activity B screen but its not highlighted. Using onPause, I got the "position" and in onResume I called setSelection(position). But still that element in the list is not highlighted Any Suggestions? Thanks On Thu, Jan 28, 2010 at 11:52 AM, theSmith <[email protected]> wrote: > > > On Jan 27, 7:03 pm, android beginner <[email protected]> > wrote: > > Hi, > > The basic list that I want to view is working. > > > > In my first list activity(ListDemoActivity), I choosed some element, > which > > triggers another list A activity. If I go back (on pressing "BACK" key), > the > > state of ListDemoActivity screen is preserved. Now If I select the same > > element again, I expect the state of A activity to be preserved aswell, > but > > its not happening. > > You're assuming things that are not true. Its an activity stack, so > once you pop it off (hit the back key) that state is lost, and you > will be creating a new activity when launching that activity A again. > > I'd recommend learning a little bit about the nature of android before > getting too deep into developing code. > The Androidology videos will get you started and the Google I/O videos > are some of my favorites for getting into Android as a pro. > http://developer.android.com/intl/de/videos/index.html#v=opZ69P-0Jbc > > > > Below is the code snippet, Can you please suggest me what I need to do? > > > > public class ListDemoActivity extends ListActivity { > > String[] firstPage = {"a", "b", "c", "d", "e"}; > > /** Called when the activity is first created. */ > > @Override > > public void onCreate(Bundle savedInstanceState) { > > super.onCreate(savedInstanceState); > > setContentView(R.layout.main); > > > > setListAdapter(new ArrayAdapter<String>(this, > > android.R.layout.simple_list_item_1, > > firstPage)); > > > > } > > > > public void onListItemClick(ListView parent, View v, > > int position, long id) > > { > > String txt = firstPage[position]; > > if ((txt == "a") || > > (txt == "b")) > > { > > Intent startActivity = new Intent(this, Activity_A.class); > > startActivity.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); > > > > startActivity(startActivity); > > } > > else > > { > > Intent startActivity = new Intent(this, Activity_B.class); > > startActivity.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); > > > > startActivity(startActivity); > > } > > > > } > > > > } > > On Tue, Jan 26, 2010 at 5:28 PM, theSmith <[email protected]> > wrote: > > > > > On Jan 25, 11:48 pm, android beginner <[email protected]> > > > wrote: > > > > so, each sub-lists should be created as list activity. On selecting > any > > > > item, should call that particular list activity. Is my understanding > > > > correct? > > > > > Yes > > > > > > Also, how to store parent list in the stack? so that on pressing > "escape" > > > > key, I can navigate backwards. > > > > > Android does this automatically, and I assume you mean the 'back' > > > key. Each new activity is launched ontop of the older ones allowing > > > you to navigate backwards down the stack. > > > > > -theSmith > > > > > > Thanks > > > > > > On Tue, Jan 26, 2010 at 9:11 AM, saad bouchehboun < > [email protected] > > > >wrote: > > > > > > > your item must be a listactivity , when you add it to your parent > > > > > list , the UI is adapted automaticly . > > > > > > > On 25 jan, 06:24, android beginner <[email protected]> > > > > > wrote: > > > > > > Hi, > > > > > > > > My Activity has list of items and on clicking any item, new > window > > > with > > > > > > different set of list has to appear and this can continue upto 4 > or 5 > > > > > level > > > > > > depths. I need your expert advice on how to achieve this. > > > > > > > > Can I have each sub-list to be of separate activity? If there are > any > > > > > online > > > > > > examples matching this requirement, please let me know. > > > > > > > > Thank > > > > > > > -- > > > > > You received this message because you are subscribed to the Google > > > > > Groups "Android Developers" group. > > > > > To post to this group, send email to > > > [email protected] > > > > > To unsubscribe from this group, send email to > > > > > [email protected]<android-developers%[email protected]> > <android-developers%[email protected]<android-developers%[email protected]> > > > > > <android-developers%[email protected]<android-developers%[email protected]> > <android-developers%[email protected]<android-developers%[email protected]> > > > > > > > > > For more options, visit this group at > > > > >http://groups.google.com/group/android-developers?hl=en > > > > > -- > > > You received this message because you are subscribed to the Google > > > Groups "Android Developers" group. > > > To post to this group, send email to > [email protected] > > > To unsubscribe from this group, send email to > > > [email protected]<android-developers%[email protected]> > <android-developers%[email protected]<android-developers%[email protected]> > > > > > For more options, visit this group at > > >http://groups.google.com/group/android-developers?hl=en > > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected]<android-developers%[email protected]> > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en > -- You received this message because you are subscribed to the Google Groups "Android Developers" group. 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