Java tutorial
/* * This is a part of amfontai Notes * Copyright (C) 2013 Andrew Fontaine * * amfontai Notes program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * amfontai Notes program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ package com.amfontai.cmput301asn1; import android.os.Bundle; import android.app.Activity; import android.view.Menu; import android.view.MenuItem; import android.widget.TextView; import android.support.v4.app.NavUtils; /** * This is the WordLog activity, which shows * all statistics relating to the notes in * the database. It contains 3 text views, * defined in activity_word_cloud.xml. The * actual counts, however, are generated * when the activity is created */ public class WordLog extends Activity { /** * mDb is an instance of (@link NotesDb}, which controls * access to the {@link android.database.SQLiteDatabase}. */ private NotesDb mDb = new NotesDb(NotesDb.READ, this); /** * @see android.app.Activity#onCreate(android.os.Bundle) */ @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_word_log); // Show the Up button in the action bar. setupActionBar(); // Here we get the views from the layout file TextView characters = (TextView) findViewById(R.id.characters); TextView words = (TextView) findViewById(R.id.words); TextView logs = (TextView) findViewById(R.id.logs); TextView topHundred = (TextView) findViewById(R.id.top); /* Here we query the DB for the statistics and * add them to the displayed string */ characters.setText(characters.getText() + " " + Long.toString(mDb.totalCharacters())); words.setText(words.getText() + " " + Long.toString(mDb.totalWords())); logs.setText(logs.getText() + " " + Long.toString(mDb.totalEntries())); for (String word : mDb.topHundred()) topHundred.setText(topHundred.getText() + " " + word); } /** * Set up the {@link android.app.ActionBar}. */ private void setupActionBar() { getActionBar().setDisplayHomeAsUpEnabled(true); } /** * @see android.app.Activity#onCreateOptionsMenu(android.view.Menu) */ @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.word_log, menu); return true; } /** * @see android.app.Activity#onOptionsItemSelected(android.view.MenuItem) */ @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case android.R.id.home: // This ID represents the Home or Up button. In the case of this // activity, the Up button is shown. Use NavUtils to allow users // to navigate up one level in the application structure. For // more details, see the Navigation pattern on Android Design: // // http://developer.android.com/design/patterns/navigation.html#up-vs-back // NavUtils.navigateUpFromSameTask(this); return true; } return super.onOptionsItemSelected(item); } }