小编chr*_*iss的帖子

我创建了一个Activity实现LoaderManager.LoaderCallbacks<Cursor>接口的简单方法 .该OnCreateLoader()很简单:

@Override
public Loader<Cursor> onCreateLoader(int id, Bundle args)
{
    Log.d(TAG, "On create loader");

    Uri queryUri = ContentUris.withAppendedId(SmartPresentationMessage.Person.CONTENT_URI, 1);
    CursorLoader cursorLoader = new CursorLoader(this, queryUri, null, null, null, null);
    return cursorLoader;
}

当我getLoaderManager().initLoader(0, null, this)在Activity创建时调用时调用此方法.

我的问题是在我的ContentProvider,有以下query()方法:

@Override
public Cursor query(Uri uri, String[] projection, String where,
        String[] whereArgs, String sortOrder)
{
    int match = sUriMatcher.match(uri);

    Cursor queryCursor;
    SQLiteDatabase mdb = mOpenHelper.getReadableDatabase();

    switch (match)
    {
        case PERSON:
            long …