JARLes

package com.example.testconection;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Set;
import java.util.UUID;

import android.app.Activity;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothSocket;
import android.content.DialogInterface.OnClickListener;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;


public class MainActivity extends ActionBarActivity {

    private static final UUID mUUID = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB");
    private static final String mMacBluetooth = "XX:XX:XX:XX:XX:XX";
    private final int REQUEST_ENABLE_BT = 1;

    private final String mStrBluetooth = "linvor";

    Button btSend, btRec, btConect, btDesconect;
    private String mStrRec;
    private String mStrSend  = "abababa";

    private BluetoothAdapter mBluetoothAdapter;
    private Set<BluetoothDevice> mPairedDevices;
    private BluetoothSocket mBtSocket = null;
    private OutputStream outStream = null;
    private InputStream inStream = null;

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

        //Checa se o bluetooth está disponivel
        mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
        if(mBluetoothAdapter == null){
            System.out.println("Bluetooth não está disponivel!");
        }

        //Checa se o bluetooth está habilitado
        if (!mBluetoothAdapter.isEnabled()) {
            Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
            startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT);
        }


        btSend = (Button) findViewById(R.id.btSend);
        btRec = (Button) findViewById(R.id.btRec);
        btConect = (Button) findViewById(R.id.btConect);
        btDesconect = (Button) findViewById(R.id.btDesconect);

        //Botão de enviar a string
        btSend.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v){
                //Enviando dados exemplo...
                sendData(mStrSend);
            }
        });
        //Botão de receber a string
        btRec.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v){
                //Enviando dados exemplo...
                recData();
            }
        });
        //Botão de conexão
        btConect.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v){
                //conecta
                conectBtArduinoWithMac();
            }
        });

        //Botão de desconectar
        btDesconect.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v){
                //desconecta
                desconectBtArduino();
            }
        });
    }

    //Método que retorna do startActivityForResult com os códigos de resultado
    protected void onActivityResult(int requestCode, int resultCode, Intent data){
        super.onActivityResult(requestCode, resultCode, data);

        if(requestCode == REQUEST_ENABLE_BT){
            if(resultCode == Activity.RESULT_OK){
                System.out.println("Bluetooth Ativado!");
            }
            else{
                System.out.println("Bluetooth nao foi ativado com sucesso!");
                finish();
            }
        }

        conectBtArduinoWithPareads();
    }

    //Conecta-se com uso do MAC
    public void conectBtArduinoWithMac(){
        //Tenta se conectar a um dispositvo com MAC conhecido(do shild bluetooth)
        BluetoothDevice device = mBluetoothAdapter.getRemoteDevice(mMacBluetooth);
        try{
            //Socket de conexao
            mBtSocket = device.createRfcommSocketToServiceRecord(mUUID);
            //Inicia conexão
            mBtSocket.connect();
        }catch(IOException e){
            System.out.println("Exception gerada: " + e);
        }
    }


    //Conecta-se com dispositivos já pareados
    public void conectBtArduinoWithPareads(){
        mPairedDevices = mBluetoothAdapter.getBondedDevices();
        BluetoothDevice mDeviceBluetooth = null;

        if(mPairedDevices.size() > 0){
            for(BluetoothDevice device : mPairedDevices){
                if(device.getName().equals(mStrBluetooth)){
                    mDeviceBluetooth = device;
                    break;
                }
            }
        }

        System.out.println("Dispositivo de conexao: " + mDeviceBluetooth.getName());

        try{
            System.out.println("Criando socket de conexao...");
            //Socket de conexao
            mBtSocket = mDeviceBluetooth.createRfcommSocketToServiceRecord(mUUID);
            System.out.println("Requisitando conexao...");
            //Inicia conexão
            mBtSocket.connect();
        }catch(IOException e){
            System.out.println("Exception gerada: " + e);
        }
    }

    //deconecta-se
    public void desconectBtArduino(){
        if(mBtSocket != null){
            try{
                mBtSocket.close();
                mBtSocket = null;
            }catch(IOException e){
                System.out.println("Exception gerada: " + e);
            }
        }
    }

    //Envia dados
    public void sendData(String strRota){
        if(mBtSocket != null){
            try {
                outStream = mBtSocket.getOutputStream();
            } catch (Exception e) {
                System.out.println("Exception(Send): " + e);
            }

            byte[] strRotaBuffer = strRota.getBytes();
            try {
                //outStream.write(strRotaBuffer);
                System.out.println("Enviando string...");
                outStream.write('a');
            } catch (Exception e) {
                System.out.println("Exception(Send): " + e);
            }
        }
        else{
            System.out.println("Bluetooth nao conetado!");
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
}