Java tutorial
/* Copyright 2014 Diogo Gomes <diogogomes@gmail.com> This file is part of OpenVidonn. OpenVidonn 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 3 of the License, or (at your option) any later version. OpenVidonn 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 Foobar. If not, see http://www.gnu.org/licenses/. */ package com.diogogomes.openvidonn.app; import android.content.BroadcastReceiver; import android.content.ComponentName; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.content.ServiceConnection; import android.content.SharedPreferences; import android.media.Ringtone; import android.media.RingtoneManager; import android.net.Uri; import android.os.Bundle; import android.os.IBinder; import android.preference.EditTextPreference; import android.preference.ListPreference; import android.preference.Preference; import android.preference.PreferenceActivity; import android.preference.PreferenceFragment; import android.preference.PreferenceManager; import android.preference.RingtonePreference; import android.text.TextUtils; import android.util.Log; import android.view.MenuItem; import android.support.v4.app.NavUtils; import android.widget.Toast; import org.bostonandroid.datepreference.DatePreference; import com.diogogomes.openvidonn.app.model.PersonalInfo; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; import java.util.GregorianCalendar; /** * A {@link PreferenceActivity} that presents a set of application settings. On * handset devices, settings are presented as a single list. On tablets, * settings are split by category, with category headers shown to the left of * the list of settings. * <p> * See <a href="http://developer.android.com/design/patterns/settings.html"> * Android Design: Settings</a> for design guidelines and the <a * href="http://developer.android.com/guide/topics/ui/settings.html">Settings * API Guide</a> for more information on developing a Settings UI. */ public class SettingsActivity extends PreferenceActivity { public static final String TAG = SettingsActivity.class.getSimpleName(); public static final String GENDER = "gender"; public static final String HEIGHT = "height"; public static final String WEIGHT = "weight"; public static final String BIRTHDAY = "birthday"; public static final String STEPS_GOAL = "steps_goal"; private BluetoothLeService mBluetoothLeService = null; private GeneralPreferenceFragment general; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); getActionBar().setDisplayHomeAsUpEnabled(true); general = new GeneralPreferenceFragment(); // Display the fragment as the main content. getFragmentManager().beginTransaction().replace(android.R.id.content, general).commit(); Intent gattServiceIntent = new Intent(this, BluetoothLeService.class); getApplicationContext().bindService(gattServiceIntent, mServiceConnection, BIND_AUTO_CREATE); } @Override public boolean onOptionsItemSelected(MenuItem item) { int id = item.getItemId(); if (id == 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 // // TODO: If Settings has multiple levels, Up should navigate up // that hierarchy. NavUtils.navigateUpFromSameTask(this); return true; } return super.onOptionsItemSelected(item); } @Override protected void onPostCreate(Bundle savedInstanceState) { super.onPostCreate(savedInstanceState); } private static IntentFilter makeGattUpdateIntentFilter() { final IntentFilter intentFilter = new IntentFilter(); intentFilter.addAction(BluetoothLeService.ACTION_DATA_AVAILABLE); return intentFilter; } @Override public void onResume() { super.onResume(); Log.d(TAG, "onResume"); getApplicationContext().registerReceiver(mGattUpdateReceiver, makeGattUpdateIntentFilter()); } @Override public void onPause() { super.onPause(); Log.d(TAG, "onPause"); getApplicationContext().unregisterReceiver(mGattUpdateReceiver); } @Override public void onDestroy() { super.onDestroy(); Log.d(TAG, "onDestroy"); SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(getApplicationContext()); PersonalInfo pinfo = new PersonalInfo(settings.getString(HEIGHT, "0"), settings.getString(WEIGHT, "0"), settings.getString(GENDER, getString(R.string.male)).equalsIgnoreCase(getString(R.string.male)) ? PersonalInfo.GENDER.MALE : PersonalInfo.GENDER.FEMALE, settings.getString(BIRTHDAY, "1970.01.01")); if (mBluetoothLeService.isConnected()) mBluetoothLeService.writePersonalInformation(pinfo); else { Toast.makeText(getApplicationContext(), "Warning! Not connected to a bracelet!", Toast.LENGTH_LONG) .show(); } getApplicationContext().unbindService(mServiceConnection); mBluetoothLeService = null; } /** * A preference value change listener that updates the preference's summary * to reflect its new value. */ private static Preference.OnPreferenceChangeListener sBindPreferenceSummaryToValueListener = new Preference.OnPreferenceChangeListener() { @Override public boolean onPreferenceChange(Preference preference, Object value) { Log.d(TAG, "onPreferenceChange(" + preference.toString() + ", " + value.toString() + ")"); String stringValue = value.toString(); if (preference instanceof ListPreference) { // For list preferences, look up the correct display value in // the preference's 'entries' list. ListPreference listPreference = (ListPreference) preference; int index = listPreference.findIndexOfValue(stringValue); // Set the summary to reflect the new value. preference.setSummary(index >= 0 ? listPreference.getEntries()[index] : null); } else if (preference instanceof DatePreference) { DatePreference date = (DatePreference) preference; String d = DatePreference.summaryFormatter().format(date.getDate().getTime()); date.setSummary(d); } else if (preference instanceof RingtonePreference) { // For ringtone preferences, look up the correct display value // using RingtoneManager. if (TextUtils.isEmpty(stringValue)) { // Empty values correspond to 'silent' (no ringtone). preference.setSummary(R.string.pref_ringtone_silent); } else { Ringtone ringtone = RingtoneManager.getRingtone(preference.getContext(), Uri.parse(stringValue)); if (ringtone == null) { // Clear the summary if there was a lookup error. preference.setSummary(null); } else { // Set the summary to reflect the new ringtone display // name. String name = ringtone.getTitle(preference.getContext()); preference.setSummary(name); } } } else { // For all other preferences, set the summary to the value's // simple string representation. preference.setSummary(stringValue); } return true; } }; /** * Binds a preference's summary to its value. More specifically, when the * preference's value is changed, its summary (line of text below the * preference title) is updated to reflect the value. The summary is also * immediately updated upon calling this method. The exact display format is * dependent on the type of preference. * * @see #sBindPreferenceSummaryToValueListener */ private static void bindPreferenceSummaryToValue(Preference preference) { // Set the listener to watch for value changes. preference.setOnPreferenceChangeListener(sBindPreferenceSummaryToValueListener); // Trigger the listener immediately with the preference's // current value. sBindPreferenceSummaryToValueListener.onPreferenceChange(preference, PreferenceManager .getDefaultSharedPreferences(preference.getContext()).getString(preference.getKey(), "")); } @Override protected boolean isValidFragment(String fragmentName) { if (GeneralPreferenceFragment.class.getName().equals(fragmentName)) return true; if (NotificationPreferenceFragment.class.getName().equals(fragmentName)) return true; if (DataSyncPreferenceFragment.class.getName().equals(fragmentName)) return true; return false; } public static class GeneralPreferenceFragment extends PreferenceFragment { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); addPreferencesFromResource(R.xml.pref_general); // Bind the summaries of EditText/List/Dialog/Ringtone preferences // to their values. When their values change, their summaries are // updated to reflect the new value, per the Android Design // guidelines. bindPreferenceSummaryToValue(findPreference(GENDER)); bindPreferenceSummaryToValue(findPreference(WEIGHT)); bindPreferenceSummaryToValue(findPreference(HEIGHT)); bindPreferenceSummaryToValue(findPreference(BIRTHDAY)); bindPreferenceSummaryToValue(findPreference(STEPS_GOAL)); } public void updateEditTextPreferenceValue(String key, String val) { EditTextPreference k = (EditTextPreference) findPreference(key); //k.setText(val); sBindPreferenceSummaryToValueListener.onPreferenceChange(k, val); } public void updateListPreferenceValue(String key, String val) { ListPreference k = (ListPreference) findPreference(key); //k.setValueIndex(k.findIndexOfValue(val)); sBindPreferenceSummaryToValueListener.onPreferenceChange(k, val); } public void updateDatePreferenceValue(String key, String dateString) { DatePreference k = (DatePreference) findPreference(key); //k.setDate(dateString); sBindPreferenceSummaryToValueListener.onPreferenceChange(k, dateString); } } public static class NotificationPreferenceFragment extends PreferenceFragment { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); addPreferencesFromResource(R.xml.pref_notification); bindPreferenceSummaryToValue(findPreference("notifications_new_message_ringtone")); } } public static class DataSyncPreferenceFragment extends PreferenceFragment { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); addPreferencesFromResource(R.xml.pref_data_sync); bindPreferenceSummaryToValue(findPreference("sync_frequency")); } } // Code to manage Service lifecycle. private final ServiceConnection mServiceConnection = new ServiceConnection() { @Override public void onServiceConnected(ComponentName componentName, IBinder service) { Log.d(TAG, "onServiceConnected"); mBluetoothLeService = ((BluetoothLeService.LocalBinder) service).getService(); if (!mBluetoothLeService.initialize()) { Log.e(TAG, "Unable to initialize Bluetooth"); finish(); } if (mBluetoothLeService.isConnected()) mBluetoothLeService.readVidonnCharacteristic(VidonnGattAttributes.VIDONN_PERSONAL_INFO); else { Toast.makeText(getApplicationContext(), "Warning! Not connected to a bracelet!", Toast.LENGTH_LONG) .show(); } } @Override public void onServiceDisconnected(ComponentName componentName) { mBluetoothLeService = null; } }; private final BroadcastReceiver mGattUpdateReceiver = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { final String action = intent.getAction(); if (BluetoothLeService.ACTION_DATA_AVAILABLE.equals(action)) { Log.d(TAG, "Received ACTION_DATA_AVAILABLE"); if (intent.hasExtra(BluetoothLeService.VIDONN_PERSONAL_INFO)) { PersonalInfo pinfo = intent.getParcelableExtra(BluetoothLeService.VIDONN_PERSONAL_INFO); Log.d(TAG, "Received Personal Info: " + pinfo); SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(context); SharedPreferences.Editor ed = settings.edit(); String height = pinfo.getHeight(); if (!settings.getString(HEIGHT, height).equals(height)) { ed.putString(HEIGHT, height); general.updateEditTextPreferenceValue(HEIGHT, height); } String weight = pinfo.getWeight(); if (!settings.getString(WEIGHT, weight).equals(weight)) { ed.putString(WEIGHT, weight); general.updateEditTextPreferenceValue(WEIGHT, weight); } String gender = (pinfo.getPreferenceGender() == PersonalInfo.GENDER.MALE ? getString(R.string.male) : getString(R.string.female)); if (!settings.getString(GENDER, gender).equals(gender)) { ed.putString(GENDER, gender); general.updateListPreferenceValue(GENDER, gender); } try { Calendar today = Calendar.getInstance(); int birthYear = today.get(Calendar.YEAR) - pinfo.getAge(); SimpleDateFormat formatter = DatePreference.formatter(); String birthday = settings.getString(BIRTHDAY, formatter.format(today.getTime())); // default is today Calendar bday = Calendar.getInstance(); bday.setTime(formatter.parse(birthday)); if (bday.get(Calendar.YEAR) == birthYear) { today.set(Calendar.YEAR, birthYear); ed.putString(BIRTHDAY, formatter.format(today.getTime())); general.updateDatePreferenceValue(BIRTHDAY, formatter.format(today.getTime())); } } catch (ParseException e) { e.printStackTrace(); } ed.commit(); } } } }; }