More thoughts... In terms of the ArrayAdapter in the parent activity, and being able to edit/add/remove items from it in child activities, would adding add, remove public methods to the parent activity that then call the corresponding add/remove for the array adapter seem like a valid way to tackle this?
Thanks, Paul On Jan 24, 10:20 pm, Paul <[email protected]> wrote: > Hi all. I need some advice on how to best proceed. > > First, a little background. I have an application that uses a > ListView as it's main activity to display all of the XML files from > the /data/data/package.name/files directory. There may be hundreds of > these files as the app gets used, so I pass the job of scanning the > directory and loading the files into the ArrayAdapter using an > AsyncTask that fires up a 'Loading...' ProgressDialog onPreExecute(), > and closes it down onPostExecute(). In doInBackground(), I iterate > through the files returned from a listFiles() call, storing the file > names into the ArrayAdapter. > > In terms of the AsyncTask, I've taken some direction here from Romain > Guy's Shelves application in terms of the AsyncTask properly pausing/ > storing, etc when it gets interrupted, and killed on Application > termination. Everything here works OK, except that the ArrayAdapter > can only tie in a single value (the filename in this case) to the > View, and I's like to tie in multiple values/views pairs (in my case, > filename, modified date). > > I've seen this done in the Notepad sample application, but that uses > the SimpleCursorAdapter, but my understanding is that is exclusively > tied to Cursors, and thus the SQLite database, which I don't need. > > So, here are my issues as I try to extend the very basic app: > > 1) How do I bind multiple values to multiple Views in the adapter. > ArrayAdapter can't do it, is there another more appropriate option, or > am I looking at creating my own custom adapter? If so, any example > and/or suggestions on how to best proceed? > > 2) Am I going down the completely wrong path here with how I am tying > files into the List... is there some 'hybrid' way to tie files to a > Cursor such that I could use the SimpleCursorAdapter to handle all of > this? > > 3) As a follow-up to that, in terms of adding items, I have an > OptionsMenu that launches a Note Editing function (very similar to the > Notepad example). I can create XML files via this method, but on > going back to the ListView, the new items are not in the List, > unsurprisingly. Notepad does this via the ContentResolver.insert() > method, but with physical files scanned from the directory, I'm just > not sure how I should be proceeding to update the List... I'd rather > not have to re-scan every time a new note is added, but that may be my > only option, as far as I know. Again, any help here is much > appreciated. I see ArrayAdapter has insert/remove methods, but when > in the child Editing activity, I'm not sure how I can access these > (ContentResolver?). Thanks for any clarification here. > > 3) In terms of the Uri I define for each item, I am generating it from > the absolute filepath, due to the fact that it may be possible in > future versions to move/store files on the SD card, and I'm trying to > maintain the Uniqueness of the Uri. Anyone see any issues with this > solution? > > A very broad question, I hope the basic gist is clear... just trying > to determine the best way to star so that I can move forward in the > most efficient and correct way. > > Thanks in advance, > > Paul -- 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] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
