[英]Connect via Bluetooth
我一直在為android開發藍牙應用程序,我可以從vaible-device-list中選擇一個Bt設備。 如何連接所選設備? 請你幫助我好嗎? 非常感謝你
這是我的代碼:
public class ScanActivity extends ListActivity {
private static final int REQUEST_BT_ENABLE = 0x1;
public static String EXTRA_DEVICE_ADDRESS = "device_address";
ListView listGeraete;
BluetoothAdapter bluetoothAdapter;
ArrayAdapter<String> arrayAdapter;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.list);
// adapter
bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
// list of devices
ListView listGeraete = getListView();
arrayAdapter = new ArrayAdapter<String>(ScanActivity.this,android.R.layout.simple_list_item_1);
listGeraete.setAdapter(arrayAdapter);
// if bt disable, enabling
if (!bluetoothAdapter.isEnabled()) {
Intent enableBt = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableBt, REQUEST_BT_ENABLE);
}
// start discovery
bluetoothAdapter.startDiscovery();
registerReceiver( ScanReceiver , new IntentFilter(
BluetoothDevice.ACTION_FOUND));
}
private final BroadcastReceiver ScanReceiver = new BroadcastReceiver() {
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
// find bt devices
if (BluetoothDevice.ACTION_FOUND.equals(action)) {
BluetoothDevice device = intent
.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
arrayAdapter.add(device.getName() + "\n" + device.getAddress());
arrayAdapter.notifyDataSetChanged();
}
}
};
// select a device
public void onListItemClick(ListView l, View view, int position, long id) {
bluetoothAdapter.cancelDiscovery();
String devicesinfo = ((TextView) view).getText().toString();
String address = devicesinfo.substring(devicesinfo.length());
Intent intent = new Intent();
intent.putExtra(EXTRA_DEVICE_ADDRESS, address);
setResult(Activity.RESULT_OK, intent);
Toast.makeText(getApplicationContext(),"Connecting to " + devicesinfo +
address,
Toast.LENGTH_SHORT).show();
}
}
您可以使用以下代碼進行連接(假設您正在使用RFComm進行連接,否則進行相應的更改)
BluetoothAdapter mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
if (!mBluetoothAdapter.isEnabled()) {
Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableBtIntent, 1);
}
BluetoothDevice device = mBluetoothAdapter.getRemoteDevice(address);
Method m = device.getClass().getMethod("createRfcommSocket", new Class[] {int.class});
BluetoothSocket socket = (BluetoothSocket) m.invoke(device, 1);
socket.connect();
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