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      1 /*
      2  * Copyright (C) 2008 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License"); you may not
      5  * use this file except in compliance with the License. You may obtain a copy of
      6  * the License at
      7  *
      8  * http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
     12  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
     13  * License for the specific language governing permissions and limitations under
     14  * the License.
     15  */
     16 package com.android.locationtracker.data;
     17 
     18 import android.app.ListActivity;
     19 import android.content.Context;
     20 import android.database.Cursor;
     21 import android.view.View;
     22 import android.widget.ResourceCursorAdapter;
     23 import android.widget.TextView;
     24 
     25 import com.android.locationtracker.R;
     26 
     27 /**
     28  * Used to bind Tracker data to a list view UI
     29  */
     30 public class TrackerListHelper extends TrackerDataHelper {
     31 
     32     private ListActivity mActivity;
     33 
     34     // sort entries by most recent first
     35     private static final String SORT_ORDER = TrackerEntry.ID_COL + " DESC";
     36 
     37     public TrackerListHelper(ListActivity activity) {
     38         super(activity, TrackerDataHelper.CSV_FORMATTER);
     39         mActivity = activity;
     40     }
     41 
     42     /**
     43      * Helper method for binding the list activities UI to the tracker data
     44      * Tracker data will be sorted in most-recent first order
     45      * Will enable automatic UI changes as tracker data changes
     46      *
     47      * @param layout - layout to populate data
     48      */
     49     public void bindListUI(int layout) {
     50         Cursor cursor = mActivity.managedQuery(TrackerProvider.CONTENT_URI,
     51                 TrackerEntry.ATTRIBUTES, null, null, SORT_ORDER);
     52         // Used to map tracker entries from the database to views
     53         TrackerAdapter adapter = new TrackerAdapter(mActivity, layout, cursor);
     54         mActivity.setListAdapter(adapter);
     55         cursor.setNotificationUri(mActivity.getContentResolver(),
     56                 TrackerProvider.CONTENT_URI);
     57 
     58     }
     59 
     60     private class TrackerAdapter extends ResourceCursorAdapter {
     61 
     62         public TrackerAdapter(Context context, int layout, Cursor c) {
     63             super(context, layout, c);
     64         }
     65 
     66         @Override
     67         public void bindView(View view, Context context, Cursor cursor) {
     68             final TextView v = (TextView) view
     69                     .findViewById(R.id.entrylist_item);
     70             String rowText = mFormatter.getOutput(TrackerEntry
     71                     .createEntry(cursor));
     72             v.setText(rowText);
     73         }
     74     }
     75 }
     76