Android Open Source - Remote-100 Remote100 Activity

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Back to project page Remote-100.

License

The source code is released under:

GNU General Public License

Java Source Code

/*
 * Copyright (C) 2011 Joakim Andersson/*w  w w.j a v a  2  s.c  om*/
 * 
 * This file is part of Remote-100, an Android application to 
 * control the Sony Ericsson CAR-100 accessory.
 * 
 * Remote-100 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.
 * 
 * Remote-100 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, see <http://www.gnu.org/licenses/>.
 */

package nu.firetech.android.remote100;

import java.util.Set;

import nu.firetech.android.joystick.OnJoystickMovedListener;
import nu.firetech.android.joystick.SplitJoystickView;
import nu.firetech.android.remote100.R;
import nu.firetech.android.remote100.backend.Car100;
import nu.firetech.android.remote100.backend.CarServer;
import android.app.Activity;
import android.app.AlertDialog;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.DialogInterface.OnClickListener;
import android.content.SharedPreferences;
import android.content.pm.PackageManager.NameNotFoundException;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.ImageView;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;
import android.widget.TextView;

public class Remote100Activity extends Activity {
  private static final int ABOUT_ID = Menu.FIRST;
  private static final int SETTINGS_ID = Menu.FIRST + 1;
  
  private static final String CAR_NAME = "CAR 100";
  
  private int currGear = 1;
  private byte lastStatus = -1;
  private AlertDialog bluetoothAlert = null;
  
  private AlertDialog aboutDialog;
  private static String aboutMessage = null;
  
  private SharedPreferences prefs;
  
  private CarServer server;
  
  // =========================================
  // Activity State Handling
  // =========================================
  
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        prefs = PreferenceManager.getDefaultSharedPreferences(getBaseContext());
        
        SeekBar gearBar = (SeekBar)findViewById(R.id.gearBar);
        GearChangeListener gearChangeListener = new GearChangeListener();
        gearBar.setOnSeekBarChangeListener(gearChangeListener);
        
        SplitJoystickView joy = (SplitJoystickView)findViewById(R.id.joystick);
        JoystickListener joyListener = new JoystickListener();
        joy.setOnJostickMovedListener(joyListener);
    
    if (aboutMessage == null) {
      String spacer = "\n\n";
      
      String versionName;
      try {
        versionName = getPackageManager().getPackageInfo(getPackageName(), 0).versionName;
      } catch (NameNotFoundException e) {
        versionName = "(unknown version)";
      }
      
      aboutMessage = new StringBuilder(getString(R.string.app_name))
      .append(" - ")
      .append(versionName)
      .append(spacer)
      .append("==================\n")
      .append("The Remote-100 App\n")
      .append("==================\n")
      .append("Copyright (c) 2011 Joakim Andersson")
      .append(spacer)
      .append("This program comes with ABSOLUTELY NO WARRANTY.\nThis " +
          "is free software, licensed under the GNU General Public" +
          " License; version 2.")
      .append(spacer)
      .append("====================\n")
      .append("The Joystick Library\n")
      .append("====================\n")
      .append("Copyright (c) 2011, olberg(at)gmail(dot)com, " +
          "http://mobile-anarchy-widgets.googlecode.com\n")
      .append("Copyright (c) 2011, Joakim Andersson\n")
      .append("All rights reserved.\n")
      .append("\n")
      .append("Redistribution and use in source and binary forms, with" +
          " or without modification, are permitted provided that " +
          "the following conditions are met:\n")
      .append("* Redistributions of source code must retain the above " +
          "copyright notice, this list of conditions and the " +
          "following disclaimer.\n")
      .append("* Redistributions in binary form must reproduce the " +
          "above copyright notice, this list of conditions and the" +
          " following disclaimer in the documentation and/or other" +
          " materials provided with the distribution.\n")
      .append("\n")
      .append("THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND " +
          "CONTRIBUTORS \"AS IS\" AND ANY EXPRESS OR IMPLIED " +
          "WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED " +
          "WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A " +
          "PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL " +
          "THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY " +
          "DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR " +
          "CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, " +
          "PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF " +
          "USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) " +
          "HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER " +
          "IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING " +
          "NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE " +
          "USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE " +
          "POSSIBILITY OF SUCH DAMAGE.")
      /* phew... */
      .toString();
    }
    
    aboutDialog = new AlertDialog.Builder(this)
    .setTitle(R.string.menu_about)
    .setMessage(aboutMessage)
    .setIcon(android.R.drawable.ic_dialog_info)
    .setPositiveButton(android.R.string.ok, new OnClickListener() {
      @Override
      public void onClick(DialogInterface dialog, int which) {
        dialog.dismiss();
      }
    })
    .create();
        
        setStatus(Car100.STATUS_NO_LINK);
    }
    
    @Override
    protected void onResume() {
      super.onResume();

        SplitJoystickView joy = (SplitJoystickView)findViewById(R.id.joystick);
        joy.setLeftControls(prefs.getBoolean(getString(R.string.key_left_controls), false));
        
      BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
      if (adapter == null || !adapter.isEnabled()) {
        bluetoothAlert = new AlertDialog.Builder(this)
        .setTitle(R.string.bluetooth_off_title)
        .setMessage(R.string.bluetooth_off_msg)
        .setIcon(android.R.drawable.ic_dialog_alert)
        .setNeutralButton(android.R.string.ok, new DialogInterface.OnClickListener() {
          @Override
          public void onClick(DialogInterface dialog, int which) {
            dialog.dismiss();
            Remote100Activity.this.finish();
          }
        })
        .create();
        bluetoothAlert.show();
      } else {
        Set<BluetoothDevice> devices = adapter.getBondedDevices();
        String carAddress = null;
        for (BluetoothDevice d : devices) {
          if (d.getName().equals(CAR_NAME)) {
            carAddress = d.getAddress();
            break;
          }
        }
        if (carAddress == null) {
            bluetoothAlert = new AlertDialog.Builder(this)
            .setTitle(R.string.no_car_title)
            .setMessage(getString(R.string.no_car_msg, CAR_NAME))
            .setIcon(android.R.drawable.ic_dialog_alert)
            .setNeutralButton(android.R.string.ok, new DialogInterface.OnClickListener() {
              @Override
              public void onClick(DialogInterface dialog, int which) {
                dialog.dismiss();
                Remote100Activity.this.finish();
              }
            })
            .create();
            bluetoothAlert.show();
        } else {
          
          server = new CarServer(this, adapter, carAddress);
        }
      }
    }
    
    @Override
    protected void onPause() {
      super.onPause();
      if (server != null) {
        server.close();
        server = null;
      }
      if (bluetoothAlert != null) {
        bluetoothAlert.dismiss();
        bluetoothAlert = null;
      }
    }
  
  // =========================================
  // Menu Handling
  // =========================================

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    super.onCreateOptionsMenu(menu);
    menu.add(0, ABOUT_ID, 0, R.string.menu_about).setIcon(android.R.drawable.ic_menu_info_details);
    menu.add(0, SETTINGS_ID, 0, R.string.menu_settings).setIcon(android.R.drawable.ic_menu_preferences);
    return true;
  }

  @Override
  public boolean onMenuItemSelected(int featureId, MenuItem item) {
    switch(item.getItemId()) {
    case ABOUT_ID:
      aboutDialog.show();
      return true;
    case SETTINGS_ID:
      startActivity(new Intent(this, SettingsActivity.class));
      return true;
    }

    return super.onMenuItemSelected(featureId, item);
  }
  
  // =========================================
  // UI Modification Methods
  // =========================================
  
    public void setStatus(byte status) {
      if (status != lastStatus) {
        int statusText, statusIcon;
        switch (status) {
        case Car100.STATUS_NO_LINK:
          statusText = R.string.status_no_link;
          statusIcon = R.drawable.status_no_link;
          break;
        case Car100.STATUS_CONNECTED:
          statusText = R.string.status_connected;
          statusIcon = R.drawable.status_connected;
          break;
        case Car100.STATUS_CHARGING:
          statusText = R.string.status_charging;
          statusIcon = R.drawable.status_charging;
          break;
        case Car100.STATUS_CHARGE_FULL:
          statusText = R.string.status_charge_full;
          statusIcon = R.drawable.status_charge_full;
          break;
        case Car100.STATUS_READY:
          statusText = R.string.status_ready;
          statusIcon = 0;
          break;
        default:
          throw new IllegalArgumentException("Unknown status: " + status);
        }      
        ((TextView)findViewById(R.id.status)).setText(statusText);
        ImageView statusIconView = (ImageView)findViewById(R.id.status_icon);
        if (statusIcon != 0) {
          statusIconView.setImageResource(statusIcon);
          statusIconView.setVisibility(View.VISIBLE);
        } else {
          statusIconView.setVisibility(View.GONE);
        }
        
        int visibility = View.GONE;
        if (status == Car100.STATUS_READY) {
          visibility = View.VISIBLE;
          
          /* Work around a bug with the SplitJoystickView not being
           * rendered on visibility change until something else changes.
           * :(
           */
          findViewById(android.R.id.content).postDelayed(new Runnable() {
          @Override
          public void run() {
            resetUI();
          }
        }, 100);
        }
        for (int view : new int[] {R.id.gearLayout, R.id.joystick}) {
          findViewById(view).setVisibility(visibility);
        }
        if (status == Car100.STATUS_READY) {
        }
      }
    lastStatus = status;
    }
    
    public void resetUI() {
      currGear = 1;
      ((SeekBar)findViewById(R.id.gearBar)).setProgress(currGear);
      ((TextView)findViewById(R.id.gearText)).setText(String.valueOf(currGear + 1));
    }
  
  // =========================================
  // Event Listeners
  // =========================================
    
    private class GearChangeListener implements OnSeekBarChangeListener {
    @Override
    public void onProgressChanged(SeekBar seekBar, int gear,
        boolean fromUser) {
      if (!fromUser || Car100.setGear((byte)(gear + 1))) {
        currGear = gear;
      } else {
        seekBar.setProgress(currGear);
      }
      ((TextView)findViewById(R.id.gearText)).setText(String.valueOf(currGear + 1));
    }

    @Override
    public void onStartTrackingTouch(SeekBar seekBar) {}

    @Override
    public void onStopTrackingTouch(SeekBar seekBar) {}
    }
    
    private class JoystickListener implements OnJoystickMovedListener {
    @Override
    public void onMoved(int x, int y) {
      if (x < -5) {
        Car100.setDir(Car100.DIR_LEFT);
      } else if (x > 5) {
        Car100.setDir(Car100.DIR_RIGHT);
      } else {
        Car100.setDir(Car100.DIR_STRAIGHT);
      }
      
      if (y > 5) {
        Car100.setAcc(Car100.ACC_FORWARD);
      } else if (y < -5) {
        Car100.setAcc(Car100.ACC_REVERSE);
      } else {
        Car100.setAcc(Car100.ACC_STOP);
      }
    }
    }
}

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