package mashiro.fan; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.lang.reflect.Method; import java.util.UUID; import android.app.Activity; import android.bluetooth.BluetoothAdapter; import android.bluetooth.BluetoothDevice; import android.bluetooth.BluetoothSocket; import android.content.Intent; import android.os.Build; import android.os.Bundle; import android.os.Handler; import android.util.Log; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.TextView; import android.widget.Toast; public class MainActivity extends Activity { private static final String TAG = "fan"; Button connect, button, button2, button3, button4, button5, button6, button7, button8, button9; TextView textView; TextView textView2; TextView textView3; Handler h; final int RECIEVE_MESSAGE = 1; // Status for Handler private BluetoothAdapter btAdapter = null; private BluetoothSocket btSocket = null; private StringBuilder sb = new StringBuilder(); private ConnectedThread mConnectedThread; // SPP UUID service private static final UUID MY_UUID = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"); // MAC-address of Bluetooth module (you must edit this line) private static String address = "98:D3:32:30:47:11"; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); connect = (Button) findViewById(R.id.connect); button = (Button) findViewById(R.id.button); button2 = (Button) findViewById(R.id.button2); button3 = (Button) findViewById(R.id.button3); button4 = (Button) findViewById(R.id.button4); button5 = (Button) findViewById(R.id.button5); button6 = (Button) findViewById(R.id.button6); button7 = (Button) findViewById(R.id.button7); button8 = (Button) findViewById(R.id.button8); button9 = (Button) findViewById(R.id.button9); // for display the received data from the Arduino h = new Handler() { public void handleMessage(android.os.Message msg) { switch (msg.what) { case RECIEVE_MESSAGE: // if receive massage byte[] readBuf = (byte[]) msg.obj; String strIncom = new String(readBuf, 0, msg.arg1); // create string from bytes array sb.append(strIncom); // append string int endOfLineIndex = sb.indexOf("\r\n"); // determine the end-of-line if (endOfLineIndex > 0) { // if end-of-line, // extract string sb.delete(0, sb.length()); // and clear TextView text = (TextView) findViewById(R.id.textView); text.setText("現在溫度: " + sb.toString()); // update TextView button.setEnabled(true); button2.setEnabled(true); button3.setEnabled(true); button4.setEnabled(true); button5.setEnabled(true); button6.setEnabled(true); button7.setEnabled(true); button8.setEnabled(true); } Log.d(TAG, "...String:"+ sb.toString() + "Byte:" + msg.arg1 + "..."); break; } }; }; btAdapter = BluetoothAdapter.getDefaultAdapter(); // get Bluetooth adapter checkBTState(); } private BluetoothSocket createBluetoothSocket(BluetoothDevice device) throws IOException { if(Build.VERSION.SDK_INT >= 10){ try { final Method m = device.getClass().getMethod("createInsecureRfcommSocketToServiceRecord", new Class[] { UUID.class }); return (BluetoothSocket) m.invoke(device, MY_UUID); } catch (Exception e) { Log.e(TAG, "Could not create Insecure RFComm Connection",e); } } return device.createRfcommSocketToServiceRecord(MY_UUID); } @Override public void onResume() { super.onResume(); Log.d(TAG, "...onResume - try connect..."); // Set up a pointer to the remote node using it's address. BluetoothDevice device = btAdapter.getRemoteDevice(address); // Two things are needed to make a connection: // A MAC address, which we got above. // A Service ID or UUID. In this case we are using the // UUID for SPP. try { btSocket = createBluetoothSocket(device); } catch (IOException e) { errorExit("Fatal Error", "In onResume() and socket create failed: " + e.getMessage() + "."); } // Discovery is resource intensive. Make sure it isn't going on // when you attempt to connect and pass your message. btAdapter.cancelDiscovery(); // Establish the connection. This will block until it connects. Log.d(TAG, "...Connecting..."); try { btSocket.connect(); Log.d(TAG, "....Connection ok..."); } catch (IOException e) { try { btSocket.close(); } catch (IOException e2) { errorExit("Fatal Error", "In onResume() and unable to close socket during connection failure" + e2.getMessage() + "."); } } // Create a data stream so we can talk to server. Log.d(TAG, "...Create Socket..."); mConnectedThread = new ConnectedThread(btSocket); mConnectedThread.start(); } @Override public void onPause() { super.onPause(); Log.d(TAG, "...In onPause()..."); try { btSocket.close(); } catch (IOException e2) { errorExit("Fatal Error", "In onPause() and failed to close socket." + e2.getMessage() + "."); } } private void checkBTState() { // Check for Bluetooth support and then check to make sure it is turned on // Emulator doesn't support Bluetooth and will return null if(btAdapter==null) { errorExit("Fatal Error", "Bluetooth not support"); } else { if (btAdapter.isEnabled()) { Log.d(TAG, "...Bluetooth ON..."); } else { //Prompt user to turn on Bluetooth Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE); startActivityForResult(enableBtIntent, 1); } } } private void errorExit(String title, String message){ Toast.makeText(getBaseContext(), title + " - " + message, Toast.LENGTH_LONG).show(); finish(); } private class ConnectedThread extends Thread { private final InputStream mmInStream; private final OutputStream mmOutStream; public ConnectedThread(BluetoothSocket socket) { InputStream tmpIn = null; OutputStream tmpOut = null; // Get the input and output streams, using temp objects because // member streams are final try { tmpIn = socket.getInputStream(); tmpOut = socket.getOutputStream(); } catch (IOException e) { } mmInStream = tmpIn; mmOutStream = tmpOut; } public void run() { byte[] buffer = new byte[256]; // buffer store for the stream int bytes; // bytes returned from read() // Keep listening to the InputStream until an exception occurs while (true) { try { // Read from the InputStream bytes = mmInStream.read(buffer); // Get number of bytes and message in "buffer" h.obtainMessage(RECIEVE_MESSAGE, bytes, -1, buffer).sendToTarget(); // Send to message queue Handler } catch (IOException e) { break; } } } /* Call this from the main activity to send data to the remote device */ public void write(String message) { Log.d(TAG, "...Data to send: " + message + "..."); byte[] msgBuffer = message.getBytes(); try { mmOutStream.write(msgBuffer); } catch (IOException e) { Log.d(TAG, "...Error data send: " + e.getMessage() + "..."); } } } } } }