Bluetooth SPP 接続を含む Android アプリケーションを開発しています。Android から送信された、PC 上の RFCOMM からの文字列の受信に関する投稿は、本当に役に立ちました。
Eclipse のログでさえ、「6 バイトのうち 6 バイトを書き込みました」と何度も言ってから、ソケットが閉じられます。しかし、ハイパーターミナルを使用して PC で (送信したものは何でも) 受信したいと考えています。それ、どうやったら出来るの？コードで仮想 COM ポートを指定するには?
USBデバッグモードでのテストにSamsung SGH-T759を使用しています。
これが私のコードです：
public class BluetoothActivity extends Activity {
private int bluetooth = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_bluetooth);
TextView text = (TextView) findViewById(R.id.text);
text.setText("Click on the button to access devices through Bluetooth");
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_bluetooth, menu);
return true;
}
public void bluetoothActivate(View view) {
int REQUEST_ENABLE_BT = 1;
int RESULT_ENABLE_BT = 0;
//TextView text = (TextView) findViewById(R.id.text);
BluetoothAdapter mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
System.out.println("Button clicked...");
if (mBluetoothAdapter == null) {
//txtView.setText("This device does not support Bluetooth");
CharSequence txt = "This device does not support Bluetooth";
Toast toast = Toast.makeText(getApplicationContext(), txt, Toast.LENGTH_SHORT);
toast.setGravity(Gravity.CENTER, 0, 0);
toast.show();
}
else {
//CharSequence text = "Bluetooth is supported!!!";
System.out.println("Bluetooth is supported!!!");
if (!mBluetoothAdapter.isEnabled()) {
Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT);
onActivityResult(REQUEST_ENABLE_BT, RESULT_ENABLE_BT, enableBtIntent);
}
else
bluetooth = 1;
device_access(view);
}
}
public void device_access(View view) {
BluetoothAdapter mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
TextView text = (TextView) findViewById(R.id.text);
Set<BluetoothDevice> pairedDevices = mBluetoothAdapter.getBondedDevices();
Spinner btDevices = (Spinner) findViewById(R.id.btDevices);
System.out.println("Bluetooth devices...");
if (bluetooth == 1)
// If there are paired devices
if (pairedDevices.size() > 0) {
// Loop through paired devices
System.out.println("Bluetooth paired devices...");
final ArrayAdapter<CharSequence> mArrayAdapter = new ArrayAdapter<CharSequence>(this, android.R.layout.simple_list_item_1);
ArrayAdapter<CharSequence> deviceName = new ArrayAdapter<CharSequence>(this, android.R.layout.simple_list_item_1);
mArrayAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
deviceName.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
for (BluetoothDevice device : pairedDevices) {
// Add the name and address to an array adapter to show in a ListView
mArrayAdapter.add(device.getName() + "\n" + device.getAddress());
deviceName.add(device.getName());
}
btDevices.setVisibility(1);
btDevices.setAdapter(mArrayAdapter);
//txtView.append("\nPaired Bluetooth Devices Found...");
/*// Create a BroadcastReceiver for ACTION_FOUND
final BroadcastReceiver mReceiver = 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 address to an array adapter to show in a ListView
mArrayAdapter.add(device.getName() + "\n" + device.getAddress());
}
}
};
// Register the BroadcastReceiver
IntentFilter filter = new IntentFilter(BluetoothDevice.ACTION_FOUND);
registerReceiver(mReceiver, filter); // Don't forget to unregister during onDestroy
*/
String[] dvc = btDevices.getSelectedItem().toString().split("\n");
final UUID SERIAL_UUID = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"); //UUID for serial connection
String mac = "90:00:4E:DC:41:9D"; //my laptop's mac adress
//mac = dvc[1];
text.append("\n Data sent to " + btDevices.getSelectedItem().toString());
BluetoothDevice device = mBluetoothAdapter.getRemoteDevice(mac); //get remote device by mac, we assume these two devices are already paired
// Get a BluetoothSocket to connect with the given BluetoothDevice
BluetoothSocket socket = null;
OutputStream out = null;
InputStream inp = null;
//try {
//socket = device.createRfcommSocketToServiceRecord(SERIAL_UUID);
Method m;
try {
m = device.getClass().getMethod("createRfcommSocket", new Class[] {int.class});
socket = (BluetoothSocket) m.invoke(device, 1);
} catch (NoSuchMethodException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalAccessException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (InvocationTargetException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
//}catch (IOException e) {}
try {
mBluetoothAdapter.cancelDiscovery();
socket.connect();
out = socket.getOutputStream();
inp = socket.getInputStream();
//now you can use out to send output via out.write
String outputValue = "Hi...\n",inputValue;
byte[] op = outputValue.getBytes(),buffer = null;
int inpBytes;
for (int i=0; i<1000000; i++) {
out.write(op);
out.flush();
}
System.out.println("Data written!!");
/*while (true) {
try {
// Read from the InputStream
inpBytes = inp.read(buffer);
inputValue = buffer.toString();
text.append(inpBytes+ " " + inputValue);
} catch (IOException e) {
}
}*/ }catch (IOException e) {} finally {
try {
socket.close();
System.out.println("Socket closed...");
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
}