git.gag.com Git - fw/altos/blob - altosdroid/src/org/altusmetrum/AltosDroid/AltosDroid.java

   1 /*
   2  * Copyright © 2012-2013 Mike Beattie <mike@ethernal.org>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; version 2 of the License.
   7  *
   8  * This program is distributed in the hope that it will be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  16  */
  17
  18 package org.altusmetrum.AltosDroid;
  19
  20 import java.lang.ref.WeakReference;
  21 import java.util.ArrayList;
  22 import java.util.Timer;
  23 import java.util.TimerTask;
  24
  25 import android.app.Activity;
  26 import android.bluetooth.BluetoothAdapter;
  27 import android.bluetooth.BluetoothDevice;
  28 import android.content.Intent;
  29 import android.content.Context;
  30 import android.content.ComponentName;
  31 import android.content.ServiceConnection;
  32 import android.content.DialogInterface;
  33 import android.os.IBinder;
  34 import android.os.Bundle;
  35 import android.os.Handler;
  36 import android.os.Message;
  37 import android.os.Messenger;
  38 import android.os.RemoteException;
  39 import android.support.v4.app.FragmentActivity;
  40 import android.support.v4.app.FragmentManager;
  41 import android.util.DisplayMetrics;
  42 import android.util.Log;
  43 import android.view.Menu;
  44 import android.view.MenuInflater;
  45 import android.view.MenuItem;
  46 import android.view.Window;
  47 import android.view.View;
  48 import android.widget.TabHost;
  49 import android.widget.TextView;
  50 import android.widget.RelativeLayout;
  51 import android.widget.Toast;
  52 import android.app.AlertDialog;
  53 import android.location.Location;
  54
  55 import org.altusmetrum.altoslib_5.*;
  56
  57 public class AltosDroid extends FragmentActivity implements AltosUnitsListener {
  58         // Debugging
  59         static final String TAG = "AltosDroid";
  60         static final boolean D = true;
  61
  62         // Message types received by our Handler
  63
  64         public static final int MSG_STATE           = 1;
  65         public static final int MSG_UPDATE_AGE      = 2;
  66
  67         // Intent request codes
  68         public static final int REQUEST_CONNECT_DEVICE = 1;
  69         public static final int REQUEST_ENABLE_BT      = 2;
  70
  71         public static FragmentManager   fm;
  72
  73         private BluetoothAdapter mBluetoothAdapter = null;
  74
  75         // Layout Views
  76         private TextView mTitle;
  77
  78         // Flight state values
  79         private TextView mCallsignView;
  80         private TextView mRSSIView;
  81         private TextView mSerialView;
  82         private TextView mFlightView;
  83         private RelativeLayout mStateLayout;
  84         private TextView mStateView;
  85         private TextView mAgeView;
  86
  87         // field to display the version at the bottom of the screen
  88         private TextView mVersion;
  89
  90         private double frequency;
  91         private int telemetry_rate;
  92
  93         // Tabs
  94         TabHost         mTabHost;
  95         AltosViewPager  mViewPager;
  96         TabsAdapter     mTabsAdapter;
  97         ArrayList<AltosDroidTab> mTabs = new ArrayList<AltosDroidTab>();
  98         int             tabHeight;
  99
 100         // Timer and Saved flight state for Age calculation
 101         private Timer timer;
 102         AltosState saved_state;
 103
 104         // Service
 105         private boolean mIsBound   = false;
 106         private Messenger mService = null;
 107         final Messenger mMessenger = new Messenger(new IncomingHandler(this));
 108
 109         // Text to Speech
 110         private AltosVoice mAltosVoice = null;
 111
 112         // The Handler that gets information back from the Telemetry Service
 113         static class IncomingHandler extends Handler {
 114                 private final WeakReference<AltosDroid> mAltosDroid;
 115                 IncomingHandler(AltosDroid ad) { mAltosDroid = new WeakReference<AltosDroid>(ad); }
 116
 117                 @Override
 118                 public void handleMessage(Message msg) {
 119                         AltosDroid ad = mAltosDroid.get();
 120
 121                         switch (msg.what) {
 122                         case MSG_STATE:
 123                                 if(D) Log.d(TAG, "MSG_STATE");
 124                                 TelemetryState telemetry_state = (TelemetryState) msg.obj;
 125                                 if (telemetry_state == null) {
 126                                         Log.d(TAG, "telemetry_state null!");
 127                                         return;
 128                                 }
 129
 130                                 ad.update_state(telemetry_state);
 131                                 break;
 132                         case MSG_UPDATE_AGE:
 133                                 if(D) Log.d(TAG, "MSG_UPDATE_AGE");
 134                                 ad.update_age();
 135                                 break;
 136                         }
 137                 }
 138         };
 139
 140
 141         private ServiceConnection mConnection = new ServiceConnection() {
 142                 public void onServiceConnected(ComponentName className, IBinder service) {
 143                         mService = new Messenger(service);
 144                         try {
 145                                 Message msg = Message.obtain(null, TelemetryService.MSG_REGISTER_CLIENT);
 146                                 msg.replyTo = mMessenger;
 147                                 mService.send(msg);
 148                         } catch (RemoteException e) {
 149                                 // In this case the service has crashed before we could even do anything with it
 150                         }
 151                 }
 152
 153                 public void onServiceDisconnected(ComponentName className) {
 154                         // This is called when the connection with the service has been unexpectedly disconnected - process crashed.
 155                         mService = null;
 156                 }
 157         };
 158
 159         void doBindService() {
 160                 bindService(new Intent(this, TelemetryService.class), mConnection, Context.BIND_AUTO_CREATE);
 161                 mIsBound = true;
 162         }
 163
 164         void doUnbindService() {
 165                 if (mIsBound) {
 166                         // If we have received the service, and hence registered with it, then now is the time to unregister.
 167                         if (mService != null) {
 168                                 try {
 169                                         Message msg = Message.obtain(null, TelemetryService.MSG_UNREGISTER_CLIENT);
 170                                         msg.replyTo = mMessenger;
 171                                         mService.send(msg);
 172                                 } catch (RemoteException e) {
 173                                         // There is nothing special we need to do if the service has crashed.
 174                                 }
 175                         }
 176                         // Detach our existing connection.
 177                         unbindService(mConnection);
 178                         mIsBound = false;
 179                 }
 180         }
 181
 182         public void registerTab(AltosDroidTab mTab) {
 183                 mTabs.add(mTab);
 184         }
 185
 186         public void unregisterTab(AltosDroidTab mTab) {
 187                 mTabs.remove(mTab);
 188         }
 189
 190         public void units_changed(boolean imperial_units) {
 191                 for (AltosDroidTab mTab : mTabs)
 192                         mTab.units_changed(imperial_units);
 193         }
 194
 195         void update_title(TelemetryState telemetry_state) {
 196                 switch (telemetry_state.connect) {
 197                 case TelemetryState.CONNECT_CONNECTED:
 198                         if (telemetry_state.config != null) {
 199                                 String str = String.format("S/N %d %6.3f MHz", telemetry_state.config.serial,
 200                                                            telemetry_state.frequency);
 201                                 if (telemetry_state.telemetry_rate != AltosLib.ao_telemetry_rate_38400)
 202                                         str = str.concat(String.format(" %d bps",
 203                                                                        AltosLib.ao_telemetry_rate_values[telemetry_state.telemetry_rate]));
 204                                 mTitle.setText(str);
 205                         } else {
 206                                 mTitle.setText(R.string.title_connected_to);
 207                         }
 208                         break;
 209                 case TelemetryState.CONNECT_CONNECTING:
 210                         mTitle.setText(R.string.title_connecting);
 211                         break;
 212                 case TelemetryState.CONNECT_READY:
 213                 case TelemetryState.CONNECT_NONE:
 214                         mTitle.setText(R.string.title_not_connected);
 215                         break;
 216                 }
 217         }
 218
 219         void start_timer() {
 220                 if (timer == null) {
 221                         timer = new Timer();
 222                         timer.scheduleAtFixedRate(new TimerTask(){ public void run() {onTimerTick();}}, 1000L, 1000L);
 223                 }
 224         }
 225
 226         void stop_timer() {
 227                 if (timer != null) {
 228                         timer.cancel();
 229                         timer.purge();
 230                         timer = null;
 231                 }
 232         }
 233
 234         boolean registered_units_listener;
 235
 236         void update_state(TelemetryState telemetry_state) {
 237
 238                 if (!registered_units_listener) {
 239                         registered_units_listener = true;
 240                         AltosPreferences.register_units_listener(this);
 241                 }
 242
 243                 update_title(telemetry_state);
 244                 update_ui(telemetry_state.state, telemetry_state.location);
 245                 if (telemetry_state.connect == TelemetryState.CONNECT_CONNECTED)
 246                         start_timer();
 247                 else
 248                         stop_timer();
 249         }
 250
 251         boolean same_string(String a, String b) {
 252                 if (a == null) {
 253                         if (b == null)
 254                                 return true;
 255                         return false;
 256                 } else {
 257                         if (b == null)
 258                                 return false;
 259                         return a.equals(b);
 260                 }
 261         }
 262
 263         void update_age() {
 264                 if (saved_state != null)
 265                         mAgeView.setText(String.format("%d", (System.currentTimeMillis() - saved_state.received_time + 500) / 1000));
 266         }
 267
 268         void update_ui(AltosState state, Location location) {
 269
 270                 Log.d(TAG, "update_ui");
 271
 272                 int prev_state = AltosLib.ao_flight_invalid;
 273
 274                 AltosGreatCircle from_receiver = null;
 275
 276                 if (saved_state != null)
 277                         prev_state = saved_state.state;
 278
 279                 if (state != null) {
 280                         Log.d(TAG, String.format("prev state %d new state  %d\n", prev_state, state.state));
 281                         if (state.state == AltosLib.ao_flight_stateless) {
 282                                 boolean prev_locked = false;
 283                                 boolean locked = false;
 284
 285                                 if(state.gps != null)
 286                                         locked = state.gps.locked;
 287                                 if (saved_state != null && saved_state.gps != null)
 288                                         prev_locked = saved_state.gps.locked;
 289                                 if (prev_locked != locked) {
 290                                         String currentTab = mTabHost.getCurrentTabTag();
 291                                         if (locked) {
 292                                                 if (currentTab.equals("pad")) mTabHost.setCurrentTabByTag("descent");
 293                                         } else {
 294                                                 if (currentTab.equals("descent")) mTabHost.setCurrentTabByTag("pad");
 295                                         }
 296                                 }
 297                         } else {
 298                                 if (prev_state != state.state) {
 299                                         String currentTab = mTabHost.getCurrentTabTag();
 300                                         Log.d(TAG, "switch state");
 301                                         switch (state.state) {
 302                                         case AltosLib.ao_flight_boost:
 303                                                 if (currentTab.equals("pad")) mTabHost.setCurrentTabByTag("ascent");
 304                                                 break;
 305                                         case AltosLib.ao_flight_drogue:
 306                                                 if (currentTab.equals("ascent")) mTabHost.setCurrentTabByTag("descent");
 307                                                 break;
 308                                         case AltosLib.ao_flight_landed:
 309                                                 if (currentTab.equals("descent")) mTabHost.setCurrentTabByTag("landed");
 310                                                 break;
 311                                         case AltosLib.ao_flight_stateless:
 312                                                 if (currentTab.equals("pad")) mTabHost.setCurrentTabByTag("descent");
 313                                                 break;
 314                                         }
 315                                 }
 316                         }
 317
 318                         if (location != null && state.gps != null && state.gps.locked) {
 319                                 double altitude = 0;
 320                                 if (location.hasAltitude())
 321                                         altitude = location.getAltitude();
 322                                 from_receiver = new AltosGreatCircle(location.getLatitude(),
 323                                                                      location.getLongitude(),
 324                                                                      altitude,
 325                                                                      state.gps.lat,
 326                                                                      state.gps.lon,
 327                                                                      state.gps.alt);
 328                         }
 329
 330                         if (saved_state == null || !same_string(saved_state.callsign, state.callsign)) {
 331                                 Log.d(TAG, "update callsign");
 332                                 mCallsignView.setText(state.callsign);
 333                         }
 334                         if (saved_state == null || state.serial != saved_state.serial) {
 335                                 Log.d(TAG, "update serial");
 336                                 mSerialView.setText(String.format("%d", state.serial));
 337                         }
 338                         if (saved_state == null || state.flight != saved_state.flight) {
 339                                 Log.d(TAG, "update flight");
 340                                 if (state.flight == AltosLib.MISSING)
 341                                         mFlightView.setText("");
 342                                 else
 343                                         mFlightView.setText(String.format("%d", state.flight));
 344                         }
 345                         if (saved_state == null || state.state != saved_state.state) {
 346                                 Log.d(TAG, "update state");
 347                                 if (state.state == AltosLib.ao_flight_stateless) {
 348                                         mStateLayout.setVisibility(View.GONE);
 349                                 } else {
 350                                         mStateView.setText(state.state_name());
 351                                         mStateLayout.setVisibility(View.VISIBLE);
 352                                 }
 353                         }
 354                         if (saved_state == null || state.rssi != saved_state.rssi) {
 355                                 Log.d(TAG, "update rssi");
 356                                 mRSSIView.setText(String.format("%d", state.rssi));
 357                         }
 358                 }
 359
 360                 for (AltosDroidTab mTab : mTabs)
 361                         mTab.update_ui(state, from_receiver, location, mTab == mTabsAdapter.currentItem());
 362
 363                 if (state != null)
 364                         mAltosVoice.tell(state, from_receiver);
 365
 366                 saved_state = state;
 367         }
 368
 369         private void onTimerTick() {
 370                 try {
 371                         mMessenger.send(Message.obtain(null, MSG_UPDATE_AGE));
 372                 } catch (RemoteException e) {
 373                 }
 374         }
 375
 376         static String pos(double p, String pos, String neg) {
 377                 String  h = pos;
 378                 if (p == AltosLib.MISSING)
 379                         return "";
 380                 if (p < 0) {
 381                         h = neg;
 382                         p = -p;
 383                 }
 384                 int deg = (int) Math.floor(p);
 385                 double min = (p - Math.floor(p)) * 60.0;
 386                 return String.format("%d°%9.4f\" %s", deg, min, h);
 387         }
 388
 389         static String number(String format, double value) {
 390                 if (value == AltosLib.MISSING)
 391                         return "";
 392                 return String.format(format, value);
 393         }
 394
 395         static String integer(String format, int value) {
 396                 if (value == AltosLib.MISSING)
 397                         return "";
 398                 return String.format(format, value);
 399         }
 400
 401         @Override
 402         public void onCreate(Bundle savedInstanceState) {
 403                 super.onCreate(savedInstanceState);
 404                 if(D) Log.e(TAG, "+++ ON CREATE +++");
 405
 406                 // Get local Bluetooth adapter
 407                 mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
 408
 409                 // If the adapter is null, then Bluetooth is not supported
 410                 if (mBluetoothAdapter == null) {
 411                         Toast.makeText(this, "Bluetooth is not available", Toast.LENGTH_LONG).show();
 412                         finish();
 413                 }
 414
 415                 fm = getSupportFragmentManager();
 416
 417                 // Set up the window layout
 418                 requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);
 419                 setContentView(R.layout.altosdroid);
 420                 getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.custom_title);
 421
 422                 // Create the Tabs and ViewPager
 423                 mTabHost = (TabHost)findViewById(android.R.id.tabhost);
 424                 mTabHost.setup();
 425
 426                 mViewPager = (AltosViewPager)findViewById(R.id.pager);
 427                 mViewPager.setOffscreenPageLimit(4);
 428
 429                 mTabsAdapter = new TabsAdapter(this, mTabHost, mViewPager);
 430
 431                 mTabsAdapter.addTab(mTabHost.newTabSpec("pad").setIndicator("Pad"), TabPad.class, null);
 432                 mTabsAdapter.addTab(mTabHost.newTabSpec("ascent").setIndicator("Ascent"), TabAscent.class, null);
 433                 mTabsAdapter.addTab(mTabHost.newTabSpec("descent").setIndicator("Descent"), TabDescent.class, null);
 434                 mTabsAdapter.addTab(mTabHost.newTabSpec("landed").setIndicator("Landed"), TabLanded.class, null);
 435                 mTabsAdapter.addTab(mTabHost.newTabSpec("map").setIndicator("Map"), TabMap.class, null);
 436
 437
 438                 // Scale the size of the Tab bar for different screen densities
 439                 // This probably won't be needed when we start supporting ICS+ tabs.
 440                 DisplayMetrics metrics = new DisplayMetrics();
 441                 getWindowManager().getDefaultDisplay().getMetrics(metrics);
 442                 int density = metrics.densityDpi;
 443
 444                 if (density==DisplayMetrics.DENSITY_XHIGH)
 445                         tabHeight = 65;
 446                 else if (density==DisplayMetrics.DENSITY_HIGH)
 447                         tabHeight = 45;
 448                 else if (density==DisplayMetrics.DENSITY_MEDIUM)
 449                         tabHeight = 35;
 450                 else if (density==DisplayMetrics.DENSITY_LOW)
 451                         tabHeight = 25;
 452                 else
 453                         tabHeight = 65;
 454
 455                 for (int i = 0; i < 5; i++)
 456                         mTabHost.getTabWidget().getChildAt(i).getLayoutParams().height = tabHeight;
 457
 458                 // Set up the custom title
 459                 mTitle = (TextView) findViewById(R.id.title_left_text);
 460                 mTitle.setText(R.string.app_name);
 461                 mTitle = (TextView) findViewById(R.id.title_right_text);
 462
 463                 // Display the Version
 464                 mVersion = (TextView) findViewById(R.id.version);
 465                 mVersion.setText("Version: " + BuildInfo.version +
 466                                  "  Built: " + BuildInfo.builddate + " " + BuildInfo.buildtime + " " + BuildInfo.buildtz +
 467                                  "  (" + BuildInfo.branch + "-" + BuildInfo.commitnum + "-" + BuildInfo.commithash + ")");
 468
 469                 mCallsignView  = (TextView) findViewById(R.id.callsign_value);
 470                 mRSSIView      = (TextView) findViewById(R.id.rssi_value);
 471                 mSerialView    = (TextView) findViewById(R.id.serial_value);
 472                 mFlightView    = (TextView) findViewById(R.id.flight_value);
 473                 mStateLayout   = (RelativeLayout) findViewById(R.id.state_container);
 474                 mStateView     = (TextView) findViewById(R.id.state_value);
 475                 mAgeView       = (TextView) findViewById(R.id.age_value);
 476
 477                 mAltosVoice = new AltosVoice(this);
 478         }
 479
 480         @Override
 481         public void onStart() {
 482                 super.onStart();
 483                 if(D) Log.e(TAG, "++ ON START ++");
 484
 485                 // Start Telemetry Service
 486                 startService(new Intent(AltosDroid.this, TelemetryService.class));
 487
 488                 if (!mBluetoothAdapter.isEnabled()) {
 489                         Intent enableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
 490                         startActivityForResult(enableIntent, AltosDroid.REQUEST_ENABLE_BT);
 491                 }
 492
 493                 doBindService();
 494
 495         }
 496
 497         @Override
 498         public synchronized void onResume() {
 499                 super.onResume();
 500                 if(D) Log.e(TAG, "+ ON RESUME +");
 501         }
 502
 503         @Override
 504         public synchronized void onPause() {
 505                 super.onPause();
 506                 if(D) Log.e(TAG, "- ON PAUSE -");
 507         }
 508
 509         @Override
 510         public void onStop() {
 511                 super.onStop();
 512                 if(D) Log.e(TAG, "-- ON STOP --");
 513
 514                 doUnbindService();
 515         }
 516
 517         @Override
 518         public void onDestroy() {
 519                 super.onDestroy();
 520                 if(D) Log.e(TAG, "--- ON DESTROY ---");
 521
 522                 if (mAltosVoice != null) mAltosVoice.stop();
 523                 stop_timer();
 524         }
 525
 526         public void onActivityResult(int requestCode, int resultCode, Intent data) {
 527                 if(D) Log.d(TAG, "onActivityResult " + resultCode);
 528                 switch (requestCode) {
 529                 case REQUEST_CONNECT_DEVICE:
 530                         // When DeviceListActivity returns with a device to connect to
 531                         if (resultCode == Activity.RESULT_OK) {
 532                                 connectDevice(data);
 533                         }
 534                         break;
 535                 case REQUEST_ENABLE_BT:
 536                         // When the request to enable Bluetooth returns
 537                         if (resultCode == Activity.RESULT_OK) {
 538                                 // Bluetooth is now enabled, so set up a chat session
 539                                 //setupChat();
 540                         } else {
 541                                 // User did not enable Bluetooth or an error occured
 542                                 Log.e(TAG, "BT not enabled");
 543                                 stopService(new Intent(AltosDroid.this, TelemetryService.class));
 544                                 Toast.makeText(this, R.string.bt_not_enabled, Toast.LENGTH_SHORT).show();
 545                                 finish();
 546                         }
 547                         break;
 548                 }
 549         }
 550
 551         private void connectDevice(String address) {
 552                 // Attempt to connect to the device
 553                 try {
 554                         if (D) Log.d(TAG, "Connecting to " + address);
 555                         mService.send(Message.obtain(null, TelemetryService.MSG_CONNECT, address));
 556                 } catch (RemoteException e) {
 557                 }
 558         }
 559
 560         private void connectDevice(Intent data) {
 561                 // Get the device MAC address
 562                 String address = data.getExtras().getString(DeviceListActivity.EXTRA_DEVICE_ADDRESS);
 563                 connectDevice(address);
 564         }
 565
 566         @Override
 567         public boolean onCreateOptionsMenu(Menu menu) {
 568                 MenuInflater inflater = getMenuInflater();
 569                 inflater.inflate(R.menu.option_menu, menu);
 570                 return true;
 571         }
 572
 573         void setFrequency(double freq) {
 574                 try {
 575                         mService.send(Message.obtain(null, TelemetryService.MSG_SETFREQUENCY, freq));
 576                 } catch (RemoteException e) {
 577                 }
 578         }
 579
 580         void setFrequency(String freq) {
 581                 try {
 582                         setFrequency (Double.parseDouble(freq.substring(11, 17)));
 583                 } catch (NumberFormatException e) {
 584                 }
 585         }
 586
 587         void setBaud(int baud) {
 588                 try {
 589                         mService.send(Message.obtain(null, TelemetryService.MSG_SETBAUD, baud));
 590                 } catch (RemoteException e) {
 591                 }
 592         }
 593
 594         void setBaud(String baud) {
 595                 try {
 596                         int     value = Integer.parseInt(baud);
 597                         int     rate = AltosLib.ao_telemetry_rate_38400;
 598                         switch (value) {
 599                         case 2400:
 600                                 rate = AltosLib.ao_telemetry_rate_2400;
 601                                 break;
 602                         case 9600:
 603                                 rate = AltosLib.ao_telemetry_rate_9600;
 604                                 break;
 605                         case 38400:
 606                                 rate = AltosLib.ao_telemetry_rate_38400;
 607                                 break;
 608                         }
 609                         setBaud(rate);
 610                 } catch (NumberFormatException e) {
 611                 }
 612         }
 613
 614         @Override
 615         public boolean onOptionsItemSelected(MenuItem item) {
 616                 Intent serverIntent = null;
 617                 switch (item.getItemId()) {
 618                 case R.id.connect_scan:
 619                         // Launch the DeviceListActivity to see devices and do scan
 620                         serverIntent = new Intent(this, DeviceListActivity.class);
 621                         startActivityForResult(serverIntent, REQUEST_CONNECT_DEVICE);
 622                         return true;
 623                 case R.id.quit:
 624                         Log.d(TAG, "R.id.quit");
 625                         stopService(new Intent(AltosDroid.this, TelemetryService.class));
 626                         finish();
 627                         return true;
 628                 case R.id.select_freq:
 629                         // Set the TBT radio frequency
 630
 631                         final String[] frequencies = {
 632                                 "Channel 0 (434.550MHz)",
 633                                 "Channel 1 (434.650MHz)",
 634                                 "Channel 2 (434.750MHz)",
 635                                 "Channel 3 (434.850MHz)",
 636                                 "Channel 4 (434.950MHz)",
 637                                 "Channel 5 (435.050MHz)",
 638                                 "Channel 6 (435.150MHz)",
 639                                 "Channel 7 (435.250MHz)",
 640                                 "Channel 8 (435.350MHz)",
 641                                 "Channel 9 (435.450MHz)"
 642                         };
 643
 644                         AlertDialog.Builder builder_freq = new AlertDialog.Builder(this);
 645                         builder_freq.setTitle("Pick a frequency");
 646                         builder_freq.setItems(frequencies,
 647                                          new DialogInterface.OnClickListener() {
 648                                                  public void onClick(DialogInterface dialog, int item) {
 649                                                          setFrequency(frequencies[item]);
 650                                                  }
 651                                          });
 652                         AlertDialog alert_freq = builder_freq.create();
 653                         alert_freq.show();
 654                         return true;
 655                 case R.id.select_rate:
 656                         // Set the TBT baud rate
 657
 658                         final String[] rates = {
 659                                 "38400",
 660                                 "9600",
 661                                 "2400",
 662                         };
 663
 664                         AlertDialog.Builder builder_rate = new AlertDialog.Builder(this);
 665                         builder_rate.setTitle("Pick a baud rate");
 666                         builder_rate.setItems(rates,
 667                                          new DialogInterface.OnClickListener() {
 668                                                  public void onClick(DialogInterface dialog, int item) {
 669                                                          setBaud(rates[item]);
 670                                                  }
 671                                          });
 672                         AlertDialog alert_rate = builder_rate.create();
 673                         alert_rate.show();
 674                         return true;
 675                 case R.id.change_units:
 676                         boolean imperial = AltosPreferences.imperial_units();
 677                         AltosPreferences.set_imperial_units(!imperial);
 678                         return true;
 679                 }
 680                 return false;
 681         }
 682
 683 }