Gets hidden method createRfcommSocket() from BluetoothDevice then calls it to return the BluetoothSocket needed to connect to. - Android Bluetooth

Android examples for Bluetooth:Bluetooth Device

  1. HOME
  2. Android
  3. Bluetooth
  4. Bluetooth Device

Description

Gets hidden method createRfcommSocket() from BluetoothDevice then calls it to return the BluetoothSocket needed to connect to.

Demo Code



//package com.java2s;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.HashSet;
import java.util.Set;

import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothSocket;

public class Main {
  public static final int SETUP_SUCCESSFULL = 1;
  public static final int PAIR_DEVICE_REQUEST = 10;
  public static final int CONNECTION_FAILURE = 11;
  private static final String DEVICE_NAME = "Open Sesame v1.0";
  public static BluetoothAdapter mBlueToothAdapter;
  public static BluetoothSocket mBluetoothSocket = null;
  public static BluetoothDevice mBluetoothDevice;
  public static OutputStream mOutputStream = null;

  public static boolean createSocketOK() {
    try {/*from ww  w.j a  va 2s. c o  m*/
      if (mBluetoothDevice != null) {
        Method createRfcommSocket = mBluetoothDevice.getClass().getMethod("createRfcommSocket", int.class);
        mBluetoothSocket = (BluetoothSocket) createRfcommSocket.invoke(mBluetoothDevice, 1);
        return true;
      } else {
        teardown();
        setup();
      }
    } catch (NoSuchMethodException | IllegalAccessException | IllegalArgumentException | InvocationTargetException e) {
      e.printStackTrace();
    }
    return false;
  }

  public static void teardown() {
    try {
      if (mBluetoothSocket != null) {
        mBluetoothSocket.close();
      }
      if (mOutputStream != null) {
        mOutputStream.flush();
        mOutputStream.close();
      }
    } catch (IOException e) {
      e.printStackTrace();
    }
  }

  public static int setup() {
    mBlueToothAdapter = BluetoothAdapter.getDefaultAdapter();
    if (mBluetoothDevice == null && mBlueToothAdapter.isEnabled()) {
      try {
        mBluetoothDevice = getDeviceByName(mBlueToothAdapter, DEVICE_NAME);
        if (mBluetoothDevice != null) {
          if (createSocketOK())
            ;
          return SETUP_SUCCESSFULL;
        } else {
          return PAIR_DEVICE_REQUEST;
        }
      } catch (IllegalArgumentException e) {
        e.printStackTrace();
        return CONNECTION_FAILURE;
      }
    }
    return 0;
  }

  private static BluetoothDevice getDeviceByName(BluetoothAdapter adapter, String name) {
    for (BluetoothDevice device : getBondedDevices(adapter)) {
      String thisDevice = device.getName();
      if (name.matches(thisDevice)) {
        return device;
      }
    }
    return null;
  }

  private static Set<BluetoothDevice> getBondedDevices(BluetoothAdapter adapter) {
    Set<BluetoothDevice> results = adapter.getBondedDevices();
    if (results == null) {
      results = new HashSet<BluetoothDevice>();
    }
    return results;
  }
}

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