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 <orz0...@gmail.com> 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 <marc...@android.com>
>
> On Wed, Apr 22, 2009 at 2:48 AM, aby <orz0...@gmail.com> 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.
>>
>>
>>
>>
>
> >
>
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