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POAccessing SQLite values from SimpleCursorAdapter
 

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  1. POAccessing SQLite values from SimpleCursorAdapter
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    <p>I have a SQLite table called "Nodes" with a set of all nodes (each node has multiple properties).</p> <p>In an activity, I use an extension of SimpleCursorAdapter to display a <em>subset</em> of the Nodes table, based on a SQL query, passing it the Cursor over the table of results (from the query).</p> <pre><code>{id_long, name_string, description_string, nodetype_enum_toString...} 1, "home", "home_desc", "cool" 2, "item1", "item1_desc", "warm" 3, "item2", "item2_desc", "hot" 4, "item3", "item3_desc", "warm" 5, "item4", "item4_desc", "hot" </code></pre> <p>I want to modify each of the list items in my ListActivity such that it displays a different color based on whether an item is cool, warm or hot. I have a small (empty) view, but it's always defaulting to white (the 'else' portion).</p> <pre><code>public View getView(int position, View convertView, ViewGroup parent) { convertView = super.getView(position, convertView, parent); if (convertView == null) convertView = View.inflate(mContext, R.layout.viewstack_item, null); View nodetype_view = (View) convertView.findViewById(R.id.nodetype_view); mGenCursor_cur = mDataHelper_db.getAll(); mGenCursor_cur.moveToPosition(position); Log.i("test", "node type key " + mGenCursor_cur.getColumnIndex(DataHelper.NODES_TYPE_KEY)); String type_nt = mGenCursor_cur.getString(mGenCursor_cur.getColumnIndex(DataHelper.NODES_TYPE_KEY)); String name_str = mGenCursor_cur.getString(mGenCursor_cur.getColumnIndex(DataHelper.NODES_NAME_KEY)); Log.i("getView", title_str + "typeis " + type_nt + " at position " + position); if (prio_np.equals(NodePrio.HIGH.toString())) { Log.i("prio_np", "high red"); prioView_view.setBackgroundColor(Color.RED); } else if (prio_np.equals(NodePrio.NORMAL.toString())) { Log.i("prio_np", "norm magenta"); prioView_view.setBackgroundColor(Color.MAGENTA); } else { Log.i("prio_np", "else (low) white"); prioView_view.setBackgroundColor(Color.WHITE); } mGenCursor_cur.close(); bindView(convertView, mContext, getCursor()); return(convertView); } </code></pre> <p>My issue is that while the cursor passed to the SimpleListAdapter will contain the _IDs (I assume) of the corresponding nodes in the subset I want, the <em>position</em> parameter in <em>getView</em> is local to the subset, so I can't cross-reference it with the Nodes table. Am I missing some easy technique?</p> <h2>As always, any help appreciated.</h2> <p>comment 4 of the marked answer helped me solve this: storing the cursor that was passed to the SimpleCursorAdapter as a member variable, then using move to position, and getLong:</p> <pre><code>mCursor_cur.moveToPosition(position); long id = mCursor_cur.getLong(0); </code></pre> <p>where <em>position</em> is the local parameter in the getView() method, and 0 is used for getLong because the db_id is the first column in the cursor passed to the SimpleCursorAdapter</p>
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    1. COdon't know how I made that "as always bit" bold, but I'll leave it as it exemplifies my gratitude :D
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