Romain,
Fantastic, thanks for the help! I've had customers contact me over the
months about
force closes that I can never get to the bottom of. This likely has
fixed the lingering
issues. Great news! Thanks,
pawpaw17
On Oct 11, 2:08 pm, Romain Guy <romain...@google.com> wrote:
> > In my background thread if I add < 100 elements to the array,
> > everything works great. If
> > I add more than 300 though I get the crash. Is this capacity related.
>
> No, this is related to the use of threads. Even adding 1 element could
> cause the crash. You just cannot really predict the behavior. That's
> why this exception was added, to help you write your apps correctly.
> Otherwise your app would look like it's working except in some cases
> bad things would happen (crash in the UI toolkit, surprising behavior
> in the UI, etc.)
>
> > How are we supposed to populate an array list associated with an array
> > adapter when we are
> > grabbing stuff out of the database in a background thread? Do we just
> > do the database read in
> > the background and then process the results from the cursors in the UI
> > thread?
>
> That's a possibility. You could also just use a CursorAdapter. You
> could also use an AsyncTask and add new elements to the array using
> publishProgress() every X elements processed.
>
>
>
>
>
>
>
> > Very best regards
>
> > pawpaw17
>
> > in OnCreate...
> > if (aa == null){
> > aa = new myArrayAdapter(this);
> > }
> > lList.setAdapter(aa);
>
> > Thread thread = new Thread(null, doSearchDatabase,
> > "Background");
> > thread.start();
> > }
>
> > myArrayAdapter aa = null;
> > final ArrayList<MyStats> myArrayList = new ArrayList<MyStats>();
>
> > class myArrayAdapter extends ArrayAdapter {
> > Activity context;
> > myArrayAdapter(Activity context) {
> > super(context, R.layout.caloriesrow, myArrayList);
> > this.context=context;
> > }
>
> > On Oct 11, 1:36 pm, Romain Guy <romain...@google.com> wrote:
> >> --> myArrayList.add(i, new CalStats(name, extra, calories));
>
> >> if that's the array list used by your adapter then you are modifying
> >> it outside of the UI thread.
>
> >> On Sun, Oct 11, 2009 at 11:07 AM, ccfrazier2 <georgefraz...@yahoo.com>
> >> wrote:
>
> >> > Yeah, it's the main thread of my app, here's the stack:
>
> >> > myApp [Android Application]
> >> > myApp [Android Application]
> >> > DalvikVM[localhost:8613]
> >> > Thread [<3> main] (Suspended (exception
> >> > IllegalStateException))
> >> > Thread [<15> Binder Thread #3] (Running)
> >> > Thread [<13> Binder Thread #2] (Running)
> >> > Thread [<11> Binder Thread #1] (Running)
>
> >> > Thread [<3> main] (Suspended (exception IllegalStateException))
> >> > ListView.layoutChildren() line: 1596
> >> > ListView(AbsListView).onLayout(boolean, int, int, int, int) line:
> >> > 1112
> >> > ListView(View).layout(int, int, int, int) line: 6569
> >> > LinearLayout.setChildFrame(View, int, int, int, int) line: 1119
> >> > LinearLayout.layoutVertical() line: 998
> >> > LinearLayout.onLayout(boolean, int, int, int, int) line: 918
> >> > LinearLayout(View).layout(int, int, int, int) line: 6569
> >> > FrameLayout.onLayout(boolean, int, int, int, int) line: 333
> >> > FrameLayout(View).layout(int, int, int, int) line: 6569
> >> > LinearLayout.setChildFrame(View, int, int, int, int) line: 1119
> >> > LinearLayout.layoutVertical() line: 998
> >> > LinearLayout.onLayout(boolean, int, int, int, int) line: 918
> >> > LinearLayout(View).layout(int, int, int, int) line: 6569
> >> > PhoneWindow$DecorView(FrameLayout).onLayout(boolean, int, int,
> >> > int,
> >> > int) line: 333
> >> > PhoneWindow$DecorView(View).layout(int, int, int, int) line: 6569
> >> > ViewRoot.performTraversals() line: 979
> >> > ViewRoot.handleMessage(Message) line: 1613
> >> > ViewRoot(Handler).dispatchMessage(Message) line: 99
> >> > Looper.loop() line: 123
> >> > ActivityThread.main(String[]) line: 4203
> >> > Method.invokeNative(Object, Object[], Class, Class[], Class, int,
> >> > boolean) line: not available [native method]
> >> > Method.invoke(Object, Object...) line: 521
> >> > ZygoteInit$MethodAndArgsCaller.run() line: 791
> >> > ZygoteInit.main(String[]) line: 549
> >> > NativeStart.main(String[]) line: not available [native method]
>
> >> > None of my code in this stack.
>
> >> > Any thoughts on how to track this down? I'm sure I'm doing something
> >> > wrong - but it was never a problem
> >> > as far as I knew running with 1.5.
>
> >> > I spawn a thread at the end of "OnCreate" in my Activity that reads
> >> > values from a database and populates
> >> > the listView. The database reading is done in the worker thread, and I
> >> > sort the list and tell the arrayadapter
> >> > to notify tht the list has changed in a routine that gets called from
> >> > my handler, ie I post at the end of the run
> >> > method of the worker thread so I can notify the array adapter from the
> >> > UI thread.
>
> >> > private void fillList(){
> >> > Collections.sort(myArrayList);
> >> > // aa is an arrayAdapter
> >> > aa.notifyDataSetChanged();
> >> > }
>
> >> > Thanks for any thoughts you guys have on this.
>
> >> > Very best,
>
> >> > pawpaw17
>
> >> > On Oct 11, 10:20 am, RichardC <richard.crit...@googlemail.com> wrote:
> >> >> When you get the error, can you see from the traceback which thread
> >> >> you are in?
>
> >> >> --
> >> >> RichardC
>
> >> >> On Oct 11, 4:06 pm, ccfrazier2 <georgefraz...@yahoo.com> wrote:
>
> >> >> > Romain,
>
> >> >> > thanks for confirming that this message is new in 1.6.
>
> >> >> > Actually, I mean to write "I'm sure my adapter mods are IN the UI
> >> >> > thread, not the background thread". Anything else that can cause this?
>
> >> >> > If I step through the code in the debugger I don't get the exception,
> >> >> > but I I run without stepping I do. Also, when I run the phone on
> >> >> > the app, I can get it to "work" 3 or 4 times, and then eventually I'll
> >> >> > get the force close.
>
> >> >> > Can anything else cause this?
>
> >> >> > Here's my code in the background thread:
>
> >> >> > public void run(){
> >> >> > int i = 0;
> >> >> > lsDb.openDataBase();
> >> >> > rescursor = lsDb.Search();
> >> >> > if (rescursor.getCount() > 0){
> >> >> > id_index = rescursor.getColumnIndex("_id");
> >> >> > name_index = rescursor.getColumnIndex("Name");
> >> >> > calories_index =
> >> >> > rescursor.getColumnIndex("Calories");
> >> >> > extra_index = rescursor.getColumnIndex("sodium");
> >> >> > }
> >> >> > if (rescursor.moveToFirst()){
> >> >> > do {
> >> >> > int id = rescursor.getInt(id_index);
> >> >> > String name =
> >> >> > rescursor.getString(name_index);
> >> >> > int calories =
> >> >> > rescursor.getInt(calories_index);
> >> >> > double extra=
> >> >> > rescursor.getDouble(extra_index);
> >> >> > // add
> >> >> > to array list
> >> >> > myArrayList.add(i, new CalStats(name,
> >> >> > extra, calories));
> >> >> > i++;
> >> >> > }
> >> >> > while (rescursor.moveToNext());
> >> >> > }
> >> >> > rescursor.close();
> >> >> > lsDb.close();
> >> >> > hh.post(postdoSearchDatabase);
> >> >> > }
>
> >> >> > The "post" at the end is to a handler. I **do** modify the adapter in
> >> >> > the run method there.
>
> >> >> > On Oct 11, 1:36 am, Romain Guy <romain...@google.com> wrote:
>
> >> >> > > It's not a bug, it's a message that was added to notify app
> >> >> > > developers
> >> >> > > of applications that are doing the wrong thing.
>
> >> >> > > > I'm sure my adapter mods are not in the UI thread.
>
> >> >> > > Which is exactly the problem.
>
> >> >> > > --
> >> >> > > Romain Guy
> >> >> > > Android framework engineer
> >> >> > > romain...@android.com
>
> >> >> > > Note: please don't send private questions to me, as I don't have
> >> >> > > time
> >> >> > > to provide private support. All such questions should be posted on
> >> >> > > public forums, where I and others can see and answer them- Hide
> >> >> > > quoted text -
>
> >> >> - Show quoted text -
>
> >> --
> >> Romain Guy
> >> Android framework engineer
> >> romain...@android.com
>
> >> Note: please don't send private questions to me, as I don't have time
> >> to provide private support. All such questions should be posted on
> >> public forums, where I and others can see and answer them- Hide quoted
> >> text -
>
> >> - Show quoted text -
>
> --
> Romain Guy
> Android framework engineer
> romain...@android.com
>
> Note: please don't send private questions to me, as I don't have time
> to provide private support. All such questions should be posted on
> public forums, where I and others can see and answer them- Hide quoted text -
>
> - Show quoted text -
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