Android Open Source - AndroBluetooth Device List Activity

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License

The source code is released under:

Apache License

Java Source Code

package net.londatiga.android.bluetooth;
//  w  w w. j  a va 2 s .com
import net.londatiga.android.bluetooth.R;

import java.lang.reflect.Method;
import java.util.ArrayList;

import android.app.Activity;
import android.bluetooth.BluetoothDevice;
import android.os.Bundle;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;

import android.widget.ListView;
import android.widget.Toast;

/**
 * Device list.
 * 
 * @author Lorensius W. L. T <lorenz@londatiga.net>
 *
 */
public class DeviceListActivity extends Activity {
  private ListView mListView;
  private DeviceListAdapter mAdapter;
  private ArrayList<BluetoothDevice> mDeviceList;
  
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    
    setContentView(R.layout.activity_paired_devices);
    
    mDeviceList    = getIntent().getExtras().getParcelableArrayList("device.list");
    
    mListView    = (ListView) findViewById(R.id.lv_paired);
    
    mAdapter    = new DeviceListAdapter(this);
    
    mAdapter.setData(mDeviceList);
    mAdapter.setListener(new DeviceListAdapter.OnPairButtonClickListener() {      
      @Override
      public void onPairButtonClick(int position) {
        BluetoothDevice device = mDeviceList.get(position);
        
        if (device.getBondState() == BluetoothDevice.BOND_BONDED) {
          unpairDevice(device);
        } else {
          showToast("Pairing...");
          
          pairDevice(device);
        }
      }
    });
    
    mListView.setAdapter(mAdapter);
    
    registerReceiver(mPairReceiver, new IntentFilter(BluetoothDevice.ACTION_BOND_STATE_CHANGED)); 
  }
  
  @Override
  public void onDestroy() {
    unregisterReceiver(mPairReceiver);
    
    super.onDestroy();
  }
  
  
  private void showToast(String message) {
    Toast.makeText(getApplicationContext(), message, Toast.LENGTH_SHORT).show();
  }
  
    private void pairDevice(BluetoothDevice device) {
        try {
            Method method = device.getClass().getMethod("createBond", (Class[]) null);
            method.invoke(device, (Object[]) null);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private void unpairDevice(BluetoothDevice device) {
        try {
            Method method = device.getClass().getMethod("removeBond", (Class[]) null);
            method.invoke(device, (Object[]) null);
            
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    
    private final BroadcastReceiver mPairReceiver = new BroadcastReceiver() {
      public void onReceive(Context context, Intent intent) {
          String action = intent.getAction();
          
          if (BluetoothDevice.ACTION_BOND_STATE_CHANGED.equals(action)) {            
             final int state     = intent.getIntExtra(BluetoothDevice.EXTRA_BOND_STATE, BluetoothDevice.ERROR);
             final int prevState  = intent.getIntExtra(BluetoothDevice.EXTRA_PREVIOUS_BOND_STATE, BluetoothDevice.ERROR);
             
             if (state == BluetoothDevice.BOND_BONDED && prevState == BluetoothDevice.BOND_BONDING) {
               showToast("Paired");
             } else if (state == BluetoothDevice.BOND_NONE && prevState == BluetoothDevice.BOND_BONDED){
               showToast("Unpaired");
             }
             
             mAdapter.notifyDataSetChanged();
          }
      }
  };
}

Java Source Code List

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