Back to project page Bluetooth.
The source code is released under:
GNU General Public License
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import android.os.Bundle; import android.app.Activity; import android.bluetooth.BluetoothAdapter; import android.bluetooth.BluetoothDevice; import android.content.BroadcastReceiver; import android.content.Context; import java.util.Set; import android.content.Intent; import android.content.IntentFilter; import android.view.View; import android.view.View.OnClickListener; import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.ListView; import android.widget.TextView; import android.widget.Toast; /* w ww . ja v a2 s.c o m*/ public class MainActivity extends Activity { private static final int REQUEST_ENABLE_BT = 1; private Button onBtn; private Button offBtn; private Button listBtn; private Button findBtn; private TextView text; private BluetoothAdapter myBluetoothAdapter; private Set<BluetoothDevice> pairedDevices; private ListView myListView; private ArrayAdapter<String> BTArrayAdapter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // take an instance of BluetoothAdapter - Bluetooth radio myBluetoothAdapter = BluetoothAdapter.getDefaultAdapter(); if(myBluetoothAdapter == null) { onBtn.setEnabled(false); offBtn.setEnabled(false); listBtn.setEnabled(false); findBtn.setEnabled(false); text.setText("Status: not supported"); Toast.makeText(getApplicationContext(),"Your device does not support Bluetooth", Toast.LENGTH_LONG).show(); } else { text = (TextView) findViewById(R.id.text); onBtn = (Button)findViewById(R.id.turnOn); onBtn.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub on(v); } }); offBtn = (Button)findViewById(R.id.turnOff); offBtn.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub off(v); } }); listBtn = (Button)findViewById(R.id.paired); listBtn.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub list(v); } }); findBtn = (Button)findViewById(R.id.search); findBtn.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub find(v); } }); myListView = (ListView)findViewById(R.id.listView1); // create the arrayAdapter that contains the BTDevices, and set it to the ListView BTArrayAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1); myListView.setAdapter(BTArrayAdapter); } } public void on(View view){ if (!myBluetoothAdapter.isEnabled()) { Intent turnOnIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE); startActivityForResult(turnOnIntent, REQUEST_ENABLE_BT); Toast.makeText(getApplicationContext(),"Bluetooth turned on" , Toast.LENGTH_LONG).show(); } else{ Toast.makeText(getApplicationContext(),"Bluetooth is already on", Toast.LENGTH_LONG).show(); } } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { // TODO Auto-generated method stub if(requestCode == REQUEST_ENABLE_BT){ if(myBluetoothAdapter.isEnabled()) { text.setText("Status: Enabled"); } else { text.setText("Status: Disabled"); } } } public void list(View view){ // get paired devices pairedDevices = myBluetoothAdapter.getBondedDevices(); // put it's one to the adapter for(BluetoothDevice device : pairedDevices) BTArrayAdapter.add(device.getName()+ "\n" + device.getAddress()); Toast.makeText(getApplicationContext(),"Show Paired Devices", Toast.LENGTH_SHORT).show(); } final BroadcastReceiver bReceiver = new BroadcastReceiver() { public void onReceive(Context context, Intent intent) { String action = intent.getAction(); // When discovery finds a device if (BluetoothDevice.ACTION_FOUND.equals(action)) { // Get the BluetoothDevice object from the Intent BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE); // add the name and the MAC address of the object to the arrayAdapter BTArrayAdapter.add(device.getName() + "\n" + device.getAddress()); BTArrayAdapter.notifyDataSetChanged(); } } }; public void find(View view) { if (myBluetoothAdapter.isDiscovering()) { // the button is pressed when it discovers, so cancel the discovery myBluetoothAdapter.cancelDiscovery(); } else { BTArrayAdapter.clear(); myBluetoothAdapter.startDiscovery(); registerReceiver(bReceiver, new IntentFilter(BluetoothDevice.ACTION_FOUND)); } } public void off(View view){ myBluetoothAdapter.disable(); text.setText("Status: Disconnected"); Toast.makeText(getApplicationContext(),"Bluetooth turned off", Toast.LENGTH_LONG).show(); } @Override protected void onDestroy() { // TODO Auto-generated method stub super.onDestroy(); unregisterReceiver(bReceiver); } }