Android Open Source - AndroidPad Trackpad Fragment

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Back to project page AndroidPad.

License

The source code is released under:

Apache License

Java Source Code

package com.fb.droidpad;
//from  w ww.j  a  v  a2 s . com
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.util.UUID;

import android.app.Fragment;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothSocket;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public class TrackpadFragment extends Fragment implements ServerSocketListener {

  private InputStream mInputStream = null;
  private OutputStream mOutputStream = null;
  private PrintWriter mPrintWriter = null;
  private BluetoothSocket mSocket = null;
  private BluetoothAdapter mBluetoothAdapter = null;
  
  private static final String TAG = "Trackpad Fragment";
  
  
  private static final String NAME = "Droidpad";
  private static final String MSG_HEADER = "DROIDPAD 1.0";
  
  private UUID mUUID = UUID.fromString("370a07a0-8557-11e3-9d72-0002a5d5c51b");
  
  private static final int REQUEST_ENABLE_BT = 2;
  
  public TrackpadFragment() {
    // Empty constructor
  }
  
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    
  }

  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container,
      Bundle savedInstanceState) {
    // Load the layout
    View v = inflater.inflate(R.layout.fragment_trackpad, container,
                false);
    
    return v;
  }
  
  @Override
  public void onPause() {
    super.onPause();
    Log.d(TAG, "On pause");
    try {
      mSocket.close();
    } catch (IOException e) {
      e.printStackTrace();
    }
  }
  
  /**
   * Insert any code if required
   */
  @Override
  public void onStart() {
    super.onStart();
    Log.d(TAG, "On Start");
    // Obtain bluetooth adapter
    mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
    // If BT is not on, request that it be enabled.
          // setupCommand() will then be called during onActivityResult
    if (!mBluetoothAdapter.isEnabled()) {
      Intent enableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
      startActivityForResult(enableIntent, REQUEST_ENABLE_BT);
      
      ensureDiscoverable();
    }
    // otherwise set up the command service
    else {
      Log.d(TAG, "Starting Asynctask");
      new ServerTask(mUUID, NAME, this).execute(mBluetoothAdapter);
      // new ClientTask(mUUID, MAC, this).execute(mBluetoothAdapter);
    }
  }

  /**
   * After Async task is done, run this to instantiate
   * the serversocket and input/output streams
   */
  @Override
  public void onServerSocketComplete(BluetoothSocket socket) {
    Log.d(TAG, "Completed AsyncTask");
    mSocket = socket;
    try {
      mInputStream = socket.getInputStream();
      mOutputStream = socket.getOutputStream();
    } catch (IOException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    }
    
    mPrintWriter = new PrintWriter(mOutputStream);
  }
  
  /**
   * Ensure that the user is discoverable if 
   * the user is connected and needs to be
   * paired
   */
    private void ensureDiscoverable() {
        Log.d(TAG, "ensure discoverable");
        
        if (mBluetoothAdapter.getScanMode() !=
            BluetoothAdapter.SCAN_MODE_CONNECTABLE_DISCOVERABLE) {
            Intent discoverableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_DISCOVERABLE);
            discoverableIntent.putExtra(BluetoothAdapter.EXTRA_DISCOVERABLE_DURATION, 300);
            startActivity(discoverableIntent);
        }
    }
  
  /**
   * Sends JSON to the client PC
   * @param json
   */
  public void sendAction(String json) {
    if (mSocket == null) {
      return;
    }
    // Log.d(TAG, "Sending JSON");
    mPrintWriter.println(json.toString());
    mPrintWriter.flush();
  }
}

Java Source Code List

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