第二种：不会有系统的提示界面
1 //搜索蓝牙设备 2 public class MainActivity extends ActionBarActivity { 3 private BluetoothAdapter adapter; 4 TextView textDevice; 5 6 @Override 7 protected void onCreate(Bundle savedInstanceState) { 8 super.onCreate(savedInstanceState); 9 requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS); 10 setContentView(R.layout.fragment_main); 11 textDevice = (TextView) findViewById(R.id.tv); 12 adapter = BluetoothAdapter.getDefaultAdapter(); 13 Set<BluetoothDevice> pairedDevices = adapter.getBondedDevices(); 14 if (pairedDevices.size() > 0) { 15 for (BluetoothDevice device : pairedDevices) { 16 17 textDevice.append(device.getName() + ":" + device.getAddress()); 18 19 } 20 } 21 // 设备被找到--发送广播 22 IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND); 23 this.registerReceiver(receiver, filter); 24 // 全部搜索完发送--广播 25 filter = new IntentFilter(BluetoothAdapter.ACTION_DISCOVERY_FINISHED); 26 this.registerReceiver(receiver, filter); 27 } 28 29 public void click(View view) { 30 setProgressBarIndeterminateVisibility(true); 31 setTitle("正在扫描。。。"); 32 if (adapter.isDiscovering()) { 33 adapter.cancelDiscovery(); 34 } 35 adapter.startDiscovery(); 36 37 } 38 39 private final BroadcastReceiver receiver = new BroadcastReceiver() { 40 41 @Override 42 public void onReceive(Context context, Intent intent) { 43 // TODO Auto-generated method stub 44 String action = intent.getAction(); 45 if (BluetoothDevice.ACTION_FOUND.equals(action)) { 46 BluetoothDevice device = intent 47 .getParcelableExtra(BluetoothDevice.EXTRA_DEVICE); 48 if (device.getBondState() != BluetoothDevice.BOND_BONDED) { 49 textDevice.append(device.getName() + ":" 50 + device.getAddress() + " "); 51 52 } 53 54 } else if (BluetoothAdapter.ACTION_DISCOVERY_FINISHED 55 .equals(action)) { 56 setProgressBarVisibility(false); 57 setTitle("完成"); 58 } 59 } 60 61 }; 62 }