Android example source code file (SearchableDictionary.java)

This example Android source code file (SearchableDictionary.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" ^TM.

Java - Android tags/keywords

activity, android, app, application, content, intent, layoutinflater, listview, menu_search, object, override, searchabledictionary, string, textview, twolinelistitem, ui, view, viewgroup, widget, wordadapter

The SearchableDictionary.java Android example source code

/*
 * Copyright (C) 2009 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 com.example.android.searchabledict;

import android.app.Activity;
import android.app.SearchManager;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.text.TextUtils;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.TwoLineListItem;

import java.util.List;

/**
 * The main activity for the dictionary.  Also displays search results triggered by the search
 * dialog.
 */
public class SearchableDictionary extends Activity {

    private static final int MENU_SEARCH = 1;

    private TextView mTextView;
    private ListView mList;

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

        Intent intent = getIntent();

        setContentView(R.layout.main);
        mTextView = (TextView) findViewById(R.id.textField);
        mList = (ListView) findViewById(R.id.list);

        if (Intent.ACTION_VIEW.equals(intent.getAction())) {
            // from click on search results
            Dictionary.getInstance().ensureLoaded(getResources());
            String word = intent.getDataString();
            Dictionary.Word theWord = Dictionary.getInstance().getMatches(word).get(0);
            launchWord(theWord);
            finish();
        } else if (Intent.ACTION_SEARCH.equals(intent.getAction())) {
            String query = intent.getStringExtra(SearchManager.QUERY);
            mTextView.setText(getString(R.string.search_results, query));
            WordAdapter wordAdapter = new WordAdapter(Dictionary.getInstance().getMatches(query));
            mList.setAdapter(wordAdapter);
            mList.setOnItemClickListener(wordAdapter);
        }

        Log.d("dict", intent.toString());
        if (intent.getExtras() != null) {
            Log.d("dict", intent.getExtras().keySet().toString());
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        menu.add(0, MENU_SEARCH, 0, R.string.menu_search)
                .setIcon(android.R.drawable.ic_search_category_default)
                .setAlphabeticShortcut(SearchManager.MENU_KEY);

        return super.onCreateOptionsMenu(menu);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case MENU_SEARCH:
                onSearchRequested();
                return true;
        }
        return super.onOptionsItemSelected(item);
    }

    private void launchWord(Dictionary.Word theWord) {
        Intent next = new Intent();
        next.setClass(this, WordActivity.class);
        next.putExtra("word", theWord.word);
        next.putExtra("definition", theWord.definition);
        startActivity(next);
    }

    class WordAdapter extends BaseAdapter implements AdapterView.OnItemClickListener {

        private final List<Dictionary.Word> mWords;
        private final LayoutInflater mInflater;

        public WordAdapter(List<Dictionary.Word> words) {
            mWords = words;
            mInflater = (LayoutInflater) SearchableDictionary.this.getSystemService(
                    Context.LAYOUT_INFLATER_SERVICE);
        }

        public int getCount() {
            return mWords.size();
        }

        public Object getItem(int position) {
            return position;
        }

        public long getItemId(int position) {
            return position;
        }

        public View getView(int position, View convertView, ViewGroup parent) {
            TwoLineListItem view = (convertView != null) ? (TwoLineListItem) convertView :
                    createView(parent);
            bindView(view, mWords.get(position));
            return view;
        }

        private TwoLineListItem createView(ViewGroup parent) {
            TwoLineListItem item = (TwoLineListItem) mInflater.inflate(
                    android.R.layout.simple_list_item_2, parent, false);
            item.getText2().setSingleLine();
            item.getText2().setEllipsize(TextUtils.TruncateAt.END);
            return item;
        }

        private void bindView(TwoLineListItem view, Dictionary.Word word) {
            view.getText1().setText(word.word);
            view.getText2().setText(word.definition);
        }

        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            launchWord(mWords.get(position));
        }
    }
}