No dice. Tried catching a Throwable both when I start the thread and
on the inner loop of the work. Nothing. No Errors.
What kinds of operations might make a thread stop? The only thing
that prevents it from iterating all the loops is whether the local
Boolean 'found' is set and it comes back false when it hasn't
finished.
I think I must be stepping on some memory somewhere so I'll go down
that path.
Thanks for the tips, Dianne.
On Mar 27, 11:15 am, Dianne Hackborn <hack...@android.com> wrote:
> Try catching a Throwable to see if an error is happening that you are
> missing.
>
>
>
>
>
>
>
>
>
> On Tue, Mar 27, 2012 at 1:54 AM, martypantsROK <martyg...@gmail.com> wrote:
> > I would have thought the same, too - AsyncTask or Thread - there's
> > something else going.
>
> > Here's what is called by doInBackground() - it's a loop through
> > possible moves until the first fit is found.
> > My Log.d("WTF"...) in the middle simply stops after a couple of
> > columns.
>
> > private Boolean doSearchforSpot(){
> > Boolean found = false;
> > tileClass tile;
> > int tileNum;
> > BoardClass spot;
> > int rot;
> > int maxrot;
> > int score = -1;
> > int i = 0;
>
> > // totally brain-less, brute-force, 1st fit. Loop through
> > // all open spots on the board, and check each tile in each
> > rotation
> > // and return the first time a valid placement and score occurs.
>
> > while ((i < deviceHandNumber) && (!found)) {
> > tileNum = deviceHand[i];
> > tile = tiles.get(tileNum);
> > int row = TileExtents[TOP];
> > int col = TileExtents[LEFT];
> > while ((row <= TileExtents[BOTTOM]) && (!found)) {
> > while ((col <= TileExtents[RIGHT]) && (!found)) {
>
> > spot = board.get(ColRowGrid[col][row]);
> > if (!spot.occupied) {
> > if (spot.facedown) {
> > rot = 3;
> > maxrot = 6;
> > }
> > else {
> > rot = 0;
> > maxrot = 3;
> > }
> > while ((rot < maxrot) && (!found)) {
> > // set the rotation and
> > check for a score
> > tile.setRotate(rot);
> > Log.d("WTF","CRT "+col+"
> > "+row+" "+rot+"
> > "+tile.getScore(0)+" "+tile.getScore(1)+" "+tile.getScore(2));
> > score =
> > placeTileOnBoard(spot.index, tileNum);
>
> > if (score >= 0) {
> > // hey! we found a
> > spot. Play it.
> > turnScore = score;
> > currentTile =
> > tileNum;
> > found = true;
> > }
> > rot++;
> > }
>
> > }
> > col++;
>
> > }
> > row++;
> > col=TileExtents[LEFT];
> > }
> > i++;
>
> > }
> > return found;
>
> > }
>
> > On Mar 27, 10:37 am, Dianne Hackborn <hack...@android.com> wrote:
> > > If your thread is stopping, it is an issue in your implementation of
> > > doInBackground(), which you haven't shown. And whatever your problem is,
> > > you will have it with a Thread as well. AsyncTask is just doing work
> > from
> > > threads, after all.
>
> > > On Tue, Mar 27, 2012 at 1:18 AM, martypantsROK <martyg...@gmail.com>
> > wrote:
> > > > I have an operation that consumes too much time for the UI thread and
> > > > need to do it in another thread. I created a thread using AsyncTask
> > > > and the thread loops until it finds and answer. When its done, I use
> > > > postExecute to deal with the data and update views. The problem is
> > > > that the thread intermittently stops in the middle of a long loop with
> > > > no errors. Sometimes it goes through all data looking, sometimes, the
> > > > thread returns having only looped through a portion.
>
> > > > I posted a question on Stackoverflow, but the only answer I got was
> > > > not to use AsyncTask but just use threads without providing any
> > > > reasoning or details why one is better than another.
>
> > > > What do folks here think? Is there something wrong with the way I've
> > > > implemented my AsyncTask? Or is the stackoverflow poster correct in
> > > > that I should just blindly use Thread without understanding why this
> > > > is incorrect, good, bad, ugly or whatever.
>
> > > > private void playDeviceTile() {
>
> > > > if (mDbHelper.isPlayingDevice(game_id)) {
>
> > > > // make sure I'm seeing all played tiles
> > > > refreshPlayedTiles();
>
> > > > final Boolean found;
>
> > > > final ProgressDialog dialog = new ProgressDialog(mcontext);
> > > > dialog.setMessage("Android is thinking...");
> > > > dialog.show();
>
> > > > new AsyncTask<Void,Void, Boolean>(){
> > > > @Override
> > > > protected void onPostExecute(Boolean isFound) {
> > > > if (!isFound) {
>
> > > > passPlay(1); // never found a tile to
> > > > play. We have to pass
> > > > }
> > > > else {
> > > > playTile(currentTile,1);
>
> > > > }
> > > > dialog.dismiss();
> > > > postInvalidate();
> > > > invalidate();
> > > > }
>
> > > > @Override
> > > > protected Boolean doInBackground(Void... params) {
> > > > try {
> > > > return doSearchforSpot();
> > > > } catch (Exception e) {
> > > > Log.e("DRAW", "Exception find spot for device
> > > > tile", e);
> > > > }
> > > > return null;
> > > > }
>
> > > > }.execute();
>
> > > > }
> > > > }
>
> > > > --
> > > > You received this message because you are subscribed to the Google
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>
> > > --
> > > Dianne Hackborn
> > > Android framework engineer
> > > hack...@android.com
>
> > > Note: please don't send private questions to me, as I don't have time to
> > > provide private support, and so won't reply to such e-mails. All such
> > > questions should be posted on public forums, where I and others can see
> > and
> > > answer them.
>
> > --
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>
> --
> Dianne Hackborn
> Android framework engineer
> hack...@android.com
>
> Note: please don't send private questions to me, as I don't have time to
> provide private support, and so won't reply to such e-mails. All such
> questions should be posted on public forums, where I and others can see and
> answer them.
--
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