How about Update , it is need followed by setNotificationUrl? Best Regards Eric Chen
On Tue, Apr 28, 2009 at 9:35 AM, 黃冠宇 <[email protected]> wrote: > Hi,I don't got what you mean. > > @Override > public Cursor query(Uri uri, String[] projection, String selection, > String[] selectionArgs, > String sort) { > SQLiteQueryBuilder qb = new SQLiteQueryBuilder(); > qb.setTables(TASKS_TABLE); > String orderBy; > > if (TextUtils.isEmpty(sort)) { > orderBy = TASK_COMPLETED + " DESC" + ", " + TASK_PRIORITY + ", " > + TASK_ID; > } else { > orderBy = sort; > } > > switch (mURIMatcher.match(uri)) { > case TASKS_SINGLE: > qb.appendWhere(TASK_ID + "=" + uri.getPathSegments().get(1)); > break; > default: > break; > } > > Cursor c = qb.query(mTasksDb, > projection, > selection, selectionArgs, > null, null, > orderBy); > > c.setNotificationUri(getContext().getContentResolver(), uri); > > > return c; > } > > In above query implementation for content provider, > can I delete the line c.setNotificationUri(getContext().getContentResolver(), > uri) ?? > thanks > > 2009/4/22 Marco Nelissen <[email protected]> > > On Wed, Apr 22, 2009 at 2:48 AM, aby <[email protected]> wrote: >> >>> >>> >>> In the sample code of android developer >>> >>> http://developer.android.com/reference/android/content/ContentProvider.html >>> >>> When query the content provider, the cursor in query () call >>> setNotificationUri(getContext().getContentResolver(), uri). >>> >>> But the query is a read-data action, it doesn't need to notify uri >>> because the database can't update when being read. is there any >>> propose to avoid some problem adding setNotificationUri in the query >>> function of content provider? >> >> >> The notification is for when the data changes after the cursor has been >> created, so that whoever has the cursor is notified that the data in the >> cursor is now stale, and the cursor should be requeried. >> >> >> >> > > > > --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
