1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of 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, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.example.android.searchabledict; 18 19 import android.app.Activity; 20 import android.app.ActionBar; 21 import android.app.SearchManager; 22 import android.content.Context; 23 import android.content.Intent; 24 import android.database.Cursor; 25 import android.net.Uri; 26 import android.os.Build; 27 import android.os.Bundle; 28 import android.view.Menu; 29 import android.view.MenuInflater; 30 import android.view.MenuItem; 31 import android.view.View; 32 import android.widget.AdapterView; 33 import android.widget.ListView; 34 import android.widget.SearchView; 35 import android.widget.SimpleCursorAdapter; 36 import android.widget.TextView; 37 import android.widget.AdapterView.OnItemClickListener; 38 39 /** 40 * The main activity for the dictionary. 41 * Displays search results triggered by the search dialog and handles 42 * actions from search suggestions. 43 */ 44 public class SearchableDictionary extends Activity { 45 46 private TextView mTextView; 47 private ListView mListView; 48 49 @Override onCreate(Bundle savedInstanceState)50 public void onCreate(Bundle savedInstanceState) { 51 super.onCreate(savedInstanceState); 52 setContentView(R.layout.main); 53 54 mTextView = (TextView) findViewById(R.id.text); 55 mListView = (ListView) findViewById(R.id.list); 56 57 handleIntent(getIntent()); 58 } 59 60 @Override onNewIntent(Intent intent)61 protected void onNewIntent(Intent intent) { 62 // Because this activity has set launchMode="singleTop", the system calls this method 63 // to deliver the intent if this activity is currently the foreground activity when 64 // invoked again (when the user executes a search from this activity, we don't create 65 // a new instance of this activity, so the system delivers the search intent here) 66 handleIntent(intent); 67 } 68 handleIntent(Intent intent)69 private void handleIntent(Intent intent) { 70 if (Intent.ACTION_VIEW.equals(intent.getAction())) { 71 // handles a click on a search suggestion; launches activity to show word 72 Intent wordIntent = new Intent(this, WordActivity.class); 73 wordIntent.setData(intent.getData()); 74 startActivity(wordIntent); 75 } else if (Intent.ACTION_SEARCH.equals(intent.getAction())) { 76 // handles a search query 77 String query = intent.getStringExtra(SearchManager.QUERY); 78 showResults(query); 79 } 80 } 81 82 /** 83 * Searches the dictionary and displays results for the given query. 84 * @param query The search query 85 */ showResults(String query)86 private void showResults(String query) { 87 88 Cursor cursor = managedQuery(DictionaryProvider.CONTENT_URI, null, null, 89 new String[] {query}, null); 90 91 if (cursor == null) { 92 // There are no results 93 mTextView.setText(getString(R.string.no_results, new Object[] {query})); 94 } else { 95 // Display the number of results 96 int count = cursor.getCount(); 97 String countString = getResources().getQuantityString(R.plurals.search_results, 98 count, new Object[] {count, query}); 99 mTextView.setText(countString); 100 101 // Specify the columns we want to display in the result 102 String[] from = new String[] { DictionaryDatabase.KEY_WORD, 103 DictionaryDatabase.KEY_DEFINITION }; 104 105 // Specify the corresponding layout elements where we want the columns to go 106 int[] to = new int[] { R.id.word, 107 R.id.definition }; 108 109 // Create a simple cursor adapter for the definitions and apply them to the ListView 110 SimpleCursorAdapter words = new SimpleCursorAdapter(this, 111 R.layout.result, cursor, from, to); 112 mListView.setAdapter(words); 113 114 // Define the on-click listener for the list items 115 mListView.setOnItemClickListener(new OnItemClickListener() { 116 117 @Override 118 public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 119 // Build the Intent used to open WordActivity with a specific word Uri 120 Intent wordIntent = new Intent(getApplicationContext(), WordActivity.class); 121 Uri data = Uri.withAppendedPath(DictionaryProvider.CONTENT_URI, 122 String.valueOf(id)); 123 wordIntent.setData(data); 124 startActivity(wordIntent); 125 } 126 }); 127 } 128 } 129 130 @Override onCreateOptionsMenu(Menu menu)131 public boolean onCreateOptionsMenu(Menu menu) { 132 MenuInflater inflater = getMenuInflater(); 133 inflater.inflate(R.menu.options_menu, menu); 134 135 if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB){ 136 SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE); 137 SearchView searchView = (SearchView) menu.findItem(R.id.search).getActionView(); 138 searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName())); 139 searchView.setIconifiedByDefault(false); 140 } 141 142 return true; 143 } 144 145 @Override onOptionsItemSelected(MenuItem item)146 public boolean onOptionsItemSelected(MenuItem item) { 147 switch (item.getItemId()) { 148 case R.id.search: 149 onSearchRequested(); 150 return true; 151 default: 152 return false; 153 } 154 } 155 } 156