Android Open Source - Bluetooth Main Activity

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License

The source code is released under:
GNU General Public License
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Java Source Code

package com.colecago.santa;
/*from  www.j ava 2 s  . co  m*/
import android.app.Activity;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;
import android.widget.TextView;

public class MainActivity extends Activity {

  public static final String TAG = "MAIN";

  public static final boolean DEBUG = true;

  private static String DEVICE_ADDRESS;

  private BtSPPHelper btConn;

  private BtHelperHandler btHandler;

  private UpdateThread updateThread;

  private static boolean CONNECTED = false;
  public static boolean OVERRIDE = false;

  private Button btnConnect;

  private TextView tvDevID;
  private TextView tvMvStatus;
  private TextView tvErrStatus;

  public SeekBar sbMeter;
  private ImageView ivNeedle;
  private ImageButton ibConnect;

  public int position = 0;

  private EditText etAccess;

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    ibConnect = (ImageButton) findViewById(R.id.ibConnect);
    ibConnect.setOnClickListener(new ButtonListener());

    sbMeter = (SeekBar) findViewById(R.id.sbMeter);
    sbMeter.setOnSeekBarChangeListener(new SlideListener());

    ivNeedle = (ImageView) findViewById(R.id.ivNeedle);

    ivNeedle.setPivotY(444);
    ivNeedle.setPivotX(86);

  }

  @Override
  protected void onResume() {
    super.onResume();
    if (CONNECTED == false) {
      ibConnect.setImageResource(R.drawable.button_pressed_small);
      // btnConnect.setText(R.string.btnConnectConnect);
      // tvDevID.setText("None");

    }
  }

  @Override
  protected void onPause() {
    super.onPause();

    if (updateThread != null) {
      updateThread.cancel();
      updateThread = null;
    }

    if (CONNECTED == true) {
      if (btConn != null)
        btConn.stop();
      CONNECTED = false;
      ibConnect.setImageResource(R.drawable.button_pressed_small);
      // btnConnect.setText(R.string.btnConnectConnect);
      // tvDevID.setText("None");
    }

  }

  @Override
  protected void onActivityResult(int requestCode, int resultCode, Intent data) {

    try {
      DEVICE_ADDRESS = data
          .getStringExtra(DeviceListActivity.EXTRA_DEVICE_ADDRESS);
      Log.d(TAG, "Device Chosen: " + DEVICE_ADDRESS);
      btHandler = new BtHelperHandler();
      btConn = new BtSPPHelper(this, btHandler);
      BluetoothDevice btDevice = BluetoothAdapter.getDefaultAdapter()
          .getRemoteDevice(DEVICE_ADDRESS);
      btConn.start();
      btConn.connect(btDevice);
      CONNECTED = true;
      MainActivity.this.runOnUiThread(new Runnable() {
        public void run() {
          // TextView tvDevID = (TextView) findViewById(R.id.tvDevID);
          // tvDevID.setText(DEVICE_ADDRESS);
          // Button btnConnect = (Button)
          // findViewById(R.id.btnConnect);
          // btnConnect.setText(R.string.btnConnectDisconnect);
          ibConnect.setImageResource(R.drawable.button_normal_small);
        }
      });
      // makePacket();

      if (updateThread == null) {
        updateThread = new UpdateThread(btConn, btHandler);
        updateThread.start();
      } else {
        updateThread.interrupt();
        updateThread = new UpdateThread(btConn, btHandler);
        updateThread.start();
      }

    } catch (Exception e) {
      Log.e(TAG, "Error in Result", e);
    }
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    Log.d(TAG, "Displaying options menu");
    super.getMenuInflater().inflate(R.menu.menu, menu);
    return true;
  }

  @Override
  public boolean onPrepareOptionsMenu(Menu menu) {
    Log.d(TAG, "onPrepareOptionsMenu");
    menu.findItem(R.id.menu_settings).setVisible(false);
    return super.onPrepareOptionsMenu(menu);
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
    case R.id.menu_about_info:
      Log.d(TAG, "menu about");
      super.startActivity(new Intent(this, AboutInfoActivity.class));
      return true;

    case R.id.menu_settings:
      Log.d(TAG, "menu settings");
      return true;
    }
    return super.onOptionsItemSelected(item);
  }

  private String getPacket() {
    String message;

    try {
      ;
      // devIDInt = Integer.parseInt(etAccess.getText().toString());
    } catch (Exception e) {
      ;
      // devIDInt = 0;
    }

    message = "!";
    // message += makeTwoDig(devIDInt);
    // message += command;
    message += makeTwoDig(sbMeter.getProgress() + 1);
    // if ((sbMeter.getProgress() + 1) >= 10)
    // message += 0;
    // else
    // message += sbMeter.getProgress() + 1;
    message += (char) (0x0D);

    // Log.d(TAG, "Packet is : " + packet);

    return message;
  }

  private void sendPacket(String packet) {
    btConn.write(packet);
  }

  private String makeTwoDig(int checkInt) {
    if (Math.abs(checkInt) < 10)
      return ("0" + checkInt);
    else
      return ("" + checkInt);
  }

  private class SlideListener implements OnSeekBarChangeListener {

    public void onProgressChanged(SeekBar arg0, int arg1, boolean arg2) {

      if (CONNECTED) {
        MainActivity.this.runOnUiThread(new Runnable() {

          public void run() {
            // SeekBar sbMeter = (SeekBar)
            // findViewById(R.id.sbMeter);
            // Log.d("MAIN", "position " + sbMeter.getProgress());
            // ivNeedle.setRotation((sbMeter.getProgress() - 11)*6);
          }
        });

        sendPacket(getPacket());
      }
    }

    public void onStartTrackingTouch(SeekBar arg0) {
      OVERRIDE = true;
    }

    public void onStopTrackingTouch(SeekBar arg0) {
      OVERRIDE = false;
      // SeekBar skPosition = (SeekBar) findViewById(R.id.sbSpeed);
    }

  }

  private class ButtonListener implements OnClickListener {
    public void onClick(View arg0) {
      switch (arg0.getId()) {
      case (R.id.ibConnect):
        // default:
        if (DEBUG)
          Log.d(TAG, "Connect Pressed");
        if (!CONNECTED) {
          CONNECTED = true;
          Intent intent = new Intent(MainActivity.this,
              DeviceListActivity.class);
          startActivityForResult(intent, 1);
        } else {
          btConn.stop();
          CONNECTED = false;
          ibConnect.setImageResource(R.drawable.button_pressed_small);
          // tvDevID.setText("None");
        }
        break;

      }
      // sendPacket(getPacket());
    }
  }

  private class UpdateThread extends Thread {
    private boolean running = false;
    private BtSPPHelper btConn;
    private String tempMSG;

    // private int index;
    // private int[] testing = {90, 90, 110, 180, 90, 90, 70, 00};

    public UpdateThread(BtSPPHelper btConn, BtHelperHandler btHandler) {
      this.btConn = btConn;

      running = true;
      MainActivity.this.runOnUiThread(new Runnable() {
        public void run() {
          // Button btnConnect = (Button)
          // findViewById(R.id.btnConnect);
          // btnConnect.setText(R.string.button_disconnect);
        }
      });
    }

    public void run() {
      while (running)
        try {
          Thread.sleep(250);
          tempMSG = btConn.getMessage();
          if (!tempMSG.isEmpty()) {
            Log.d(TAG, "RCVD MESSAGE: " + tempMSG);
            decodeMessage(tempMSG);
          }

        } catch (InterruptedException interrupt) {
          Log.e(TAG, "sleep interrupted", interrupt);
          this.cancel();
        } catch (Exception e) {
          Log.e(TAG, "other thread exception", e);
          this.cancel();
        }

    }

    public void decodeMessage(final String inString) {
      MainActivity.this.runOnUiThread(new Runnable() {
        int tempIndex = -1;
        char tempchar1, tempchar2;

        public void run() {
          try {
            tempIndex = inString.indexOf(0x21);
            if (tempIndex != -1) {
              tempchar1 = inString.charAt(tempIndex + 1);
              tempchar2 = inString.charAt(tempIndex + 2);
              
              position = Integer.parseInt(Character.toString(tempchar1) + Character.toString(tempchar2)) - 1;
              if (!OVERRIDE){
                sbMeter.setProgress(position);
              }
              else{
                if (position != sbMeter.getProgress())
                  sendPacket(getPacket());
              }
              ivNeedle.setRotation((position - 11)*6);
            }
          } catch (Exception e) {

          }

        }
      });
    }

    public void cancel() {
      running = false;
      MainActivity.CONNECTED = false;
      MainActivity.this.runOnUiThread(new Runnable() {
        public void run() {
          // Button btnConnect = (Button)
          // findViewById(R.id.btnConnect);
          // btnConnect.setText(R.string.button_connect);
        }
      });
      // btConn.stop();
    }
  }
}
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