android.support.test.testapp.CursorAdapterListFragment.java Source code

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Here is the source code for android.support.test.testapp.CursorAdapterListFragment.java

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/*
 * Copyright (C) 2014 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package android.support.test.testapp;

import com.google.common.annotations.VisibleForTesting;

import android.database.MatrixCursor;
import android.os.Bundle;
import android.support.v4.app.ListFragment;
import android.support.v4.widget.CursorAdapter;
import android.support.v4.widget.SimpleCursorAdapter;
import android.view.View;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.TextView;

/**
 * A {@link ListFragment} which uses a {@link CursorAdapter} as a data source.
 */
public class CursorAdapterListFragment extends ListFragment {

    private static final String COLUMN_ID = "_id";
    @VisibleForTesting
    public static final String COLUMN_STR = "column_str";
    @VisibleForTesting
    public static final String COLUMN_LEN = "column_length";
    private static final String[] COLUMN_NAMES = new String[] { COLUMN_ID, COLUMN_STR, COLUMN_LEN };

    private MatrixCursor listItemCursor;

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        listItemCursor = new MatrixCursor(COLUMN_NAMES);
        populateData();
        final ListAdapter cursorAdapter = new SimpleCursorAdapter(getActivity(),
                android.R.layout.simple_list_item_2, listItemCursor, new String[] { COLUMN_STR, COLUMN_LEN },
                new int[] { android.R.id.text1, android.R.id.text2 }, 0);
        setListAdapter(cursorAdapter);
    }

    @Override
    public void onListItemClick(ListView listView, View view, int position, long id) {
        TextView selectedItemValue = (TextView) getActivity().findViewById(R.id.selected_item_value);
        selectedItemValue.setText("item: " + position);
    }

    private static Object[] makeItem(int forRow) {
        return new Object[] { forRow, "item: " + forRow, ("item: " + forRow).length() };
    }

    private void populateData() {
        for (int i = 0; i < 20; i++) {
            listItemCursor.addRow(makeItem(i));
        }
    }
}