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new version of the Searchable Dictionary that saves all the words

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in an SQLite Database and FTS3 table, then performs all look ups
using the content provider, plus various style modifications.

Change-Id: If73c96f48aeae7372333a558b2d494bcb256edfe
This commit is contained in:
Scott Main
2010-03-25 17:37:25 -07:00
parent 3bf043f9cd
commit 3c26ae869e
16 changed files with 622 additions and 379 deletions
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166
samples/SearchableDictionary/src/com/example/android/searchabledict/SearchableDictionary.java
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@@ -1,5 +1,5 @@
/*
* Copyright (C) 2009 The Android Open Source Project
* Copyright (C) 2010 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.
@@ -18,138 +18,114 @@ package com.example.android.searchabledict;
import android.app.Activity;
import android.app.SearchManager;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
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.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;
import android.widget.TextView;
import android.widget.TwoLineListItem;
import java.util.List;
import android.widget.AdapterView.OnItemClickListener;
/**
* The main activity for the dictionary. Also displays search results triggered by the search
* dialog.
* The main activity for the dictionary.
* Displays search results triggered by the search dialog and handles
* actions from search suggestions.
*/
public class SearchableDictionary extends Activity {
private static final int MENU_SEARCH = 1;
private TextView mTextView;
private ListView mList;
private ListView mListView;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mTextView = (TextView) findViewById(R.id.text);
mListView = (ListView) findViewById(R.id.list);
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);
// handles a click on a search suggestion; launches activity to show word
Intent wordIntent = new Intent(this, WordActivity.class);
wordIntent.setData(intent.getData());
startActivity(wordIntent);
finish();
} else if (Intent.ACTION_SEARCH.equals(intent.getAction())) {
// handles a search query
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);
showResults(query);
}
}
Log.d("dict", intent.toString());
if (intent.getExtras() != null) {
Log.d("dict", intent.getExtras().keySet().toString());
/**
* Searches the dictionary and displays results for the given query.
* @param query The search query
*/
private void showResults(String query) {
Cursor cursor = managedQuery(DictionaryProvider.CONTENT_URI, null, null,
new String[] {query}, null);
if (cursor == null) {
// There are no results
mTextView.setText(getString(R.string.no_results, new Object[] {query}));
} else {
// Display the number of results
int count = cursor.getCount();
String countString = getResources().getQuantityString(R.plurals.search_results,
count, new Object[] {count, query});
mTextView.setText(countString);
// Specify the columns we want to display in the result
String[] from = new String[] { DictionaryDatabase.KEY_WORD,
DictionaryDatabase.KEY_DEFINITION };
// Specify the corresponding layout elements where we want the columns to go
int[] to = new int[] { R.id.word,
R.id.definition };
// Create a simple cursor adapter for the definitions and apply them to the ListView
SimpleCursorAdapter words = new SimpleCursorAdapter(this,
R.layout.result, cursor, from, to);
mListView.setAdapter(words);
// Define the on-click listener for the list items
mListView.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
// Build the Intent used to open WordActivity with a specific word Uri
Intent wordIntent = new Intent(getApplicationContext(), WordActivity.class);
Uri data = Uri.withAppendedPath(DictionaryProvider.CONTENT_URI,
String.valueOf(id));
wordIntent.setData(data);
startActivity(wordIntent);
}
});
}
}
@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);
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.options_menu, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case MENU_SEARCH:
case R.id.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));
default:
return false;
}
}
}