List17.java

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The file containing the source code shown below is located in the corresponding directory in <sdk>/samples/android-<version>/...

/*
 * Copyright (C) 2010 The Android开源工程
 *
 * 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 com.example.android.apis.view;

import android.app.ListActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;


/**
 * A list view where the last item the user clicked is placed in
 * the "activated" state, causing its background to highlight.
 */
public class List17 extends ListActivity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        // Use the built-in layout for showing a list item with a single
        // line of text whose background is changes when activated.
        setListAdapter(new ArrayAdapter<String>(this,
                android.R.layout.simple_list_item_activated_1, mStrings));
        getListView().setTextFilterEnabled(true);

        // Tell the list view to show one checked/activated item at a time.
        getListView().setChoiceMode(ListView.CHOICE_MODE_SINGLE);

        // Start with first item activated.
        // Make the newly clicked item the currently selected one.
        getListView().setItemChecked(0, true);
    }

    @Override
    protected void onListItemClick(ListView l, View v, int position, long id) {
        // Make the newly clicked item the currently selected one.
        getListView().setItemChecked(position, true);
    }

    private String[] mStrings = Cheeses.sCheeseStrings;
}