Android Open Source - MultiWork Device Scanner

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License

The source code is released under:

Copyright (c) 2013, Torti Andr?s Fernando All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions a...

Java Source Code

package com.bluetoothutils.andres;
//www  .  j  av a  2s .  c o  m
import android.app.Activity;
import android.app.AlertDialog;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentFilter;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;

import java.util.ArrayList;
import java.util.Set;

public class DeviceScanner{

    private static final boolean DEBUG = true;
    private final OnDeviceSelected onDeviceSelected;

    private final ArrayList<String> devicesList = new ArrayList<String>();

    private BluetoothAdapter bluetoothAdapter;
    private AlertDialog.Builder dialogBuilder;
    private AlertDialog alertDialog;

    private final String ScanString;
    private final String ScanningString;
    private final String SelectDeviceString;
    private final String NoDeviceString;

    ArrayAdapter<String> adapter;
    ListView listView;

    public DeviceScanner(final OnDeviceSelected onDeviceSelected, final Activity activity, String scanString, String scanningString,
                         String selectDeviceString, String noDeviceString){

        this.onDeviceSelected = onDeviceSelected;
        ScanString = scanString;
        ScanningString = scanningString;
        SelectDeviceString = selectDeviceString;
        NoDeviceString = noDeviceString;

        bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();

        // Dispositivos emparejados
        Set<BluetoothDevice> pairedDevices = bluetoothAdapter.getBondedDevices();

        // Agrego los dispositivos emparejados a la lista
        if (pairedDevices.size() > 0) {
            for (BluetoothDevice device : pairedDevices) {
                devicesList.add("[Paired] - " + device.getName() + "\n" + device.getAddress());
            }
        }

        // Registro Broadcast para cuando un dispositivo es encontrado
        IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
        activity.registerReceiver(mReceiver, filter);

        // Registro Broadcast para cuando termin de escanear
        filter = new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_FINISHED);
        activity.registerReceiver(mReceiver, filter);

        // Creo el dilogo
        dialogBuilder = new AlertDialog.Builder(activity);
        dialogBuilder.setTitle("Bluetooth");
        dialogBuilder.setPositiveButton(ScanString, null);
        dialogBuilder.setOnCancelListener(new DialogInterface.OnCancelListener() {
            @Override
            public void onCancel(DialogInterface dialogInterface) {
                bluetoothAdapter.cancelDiscovery();
                onDeviceSelected.onDeviceSelected(null, null);
                dialogInterface.cancel();
            }
        });

        // ListView
        listView = new ListView(activity);
        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
                if(DEBUG) Log.i("DeviceScanner", "Item " + i + " clicked: " + devicesList.get(i));
                String info = devicesList.get(i);

                // La direccin MAC son los ltimos 17 caracteres
                String address = info.substring(info.length() - 17);

                // Nombre
                String name;
                if(info.contains("[Paired]")){
                    name = info.substring(11, info.length() - 18);
                }
                else{
                    name = info.substring(0, info.length() - 18);
                }

                alertDialog.dismiss();
                activity.unregisterReceiver(mReceiver);
                bluetoothAdapter.cancelDiscovery();

                onDeviceSelected.onDeviceSelected(address, name);
            }
        });

        adapter = new ArrayAdapter<String>(activity, android.R.layout.simple_list_item_1, devicesList);
        listView.setAdapter(adapter);
        dialogBuilder.setView(listView);

        alertDialog = dialogBuilder.create();
        alertDialog.setOnShowListener(new DialogInterface.OnShowListener() {
            @Override
            public void onShow(DialogInterface dialogInterface) {
                alertDialog.getButton(AlertDialog.BUTTON_POSITIVE).setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View view) {
                        if (DEBUG) Log.i("DeviceScanner", "Scanning!");

                        devicesList.clear();
                        if (bluetoothAdapter.isDiscovering()) bluetoothAdapter.cancelDiscovery();

                        bluetoothAdapter.startDiscovery();
                        alertDialog.setTitle(ScanningString);
                    }
                });
            }
        });
        alertDialog.show();
    }

    // BroadcastReceiver que es llamado en los eventos de Bluetooth
    private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            String action = intent.getAction();

            // Nuevo dispositivo encontrado
            if (BluetoothDevice.ACTION_FOUND.equals(action)) {

                // Obtengo el dispositivo Bluetooth que fue encontrado
                BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);

                // Si no est emparejado lo agrego, de otro modo ya lo agreg al comienzo
                if (device.getBondState() != BluetoothDevice.BOND_BONDED) {
                    devicesList.add(device.getName() + "\n" + device.getAddress());

                    if(DEBUG) Log.i("DeviceScanner", "Found: " + device.getName());
                    adapter.notifyDataSetChanged();
                }

            // Se termino de escanear
            } else if (BluetoothAdapter.ACTION_DISCOVERY_FINISHED.equals(action)) {
                alertDialog.setTitle(SelectDeviceString);
                if (devicesList.size() == 0) {
                    alertDialog.setTitle(NoDeviceString);
                }
            }
        }
    };
}

Java Source Code List

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