即时发送数据＆＃34; 52 40 00 00 CF E6 2A 1 2A 0 0 0 0 5 2A 0 0 0 0 2A 0 0 0 0 0 3B 00＆＃34; 来自HC-05。但问题是，当我收到数据时，我会得到不同的数据。 设备连接正常，但是当我向移动设备发送数据时，我得到了错误的数据。帮助我。
这是我的代码我做错了什么？
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
Button btnSubmit, nextPage;
TextView txtArduino, txtString, txtStringLength, txtOutput, lblmeterId;
EditText txtMeterId, txtCommandNo;
Spinner txtCommandType;
Handler bluetoothIn;
StringBuilder packetFormat;
String packetRequest;
long packetFormatArray[] = new long[28];
long receivedDataArray[] = new long[28];
final int handlerState = 0; //used to identify handler message
private BluetoothAdapter btAdapter = null;
private BluetoothSocket btSocket = null;
private StringBuilder recDataString = new StringBuilder();
private ConnectedThread mConnectedThread;
private static final UUID BTMODULEUUID = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB");
// String for MAC address
private static String address;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btnSubmit = (Button) findViewById(R.id.btnSubmit);
nextPage = (Button) findViewById(R.id.nextPage);
txtString = (TextView) findViewById(R.id.txtString);
txtStringLength = (TextView) findViewById(R.id.testView1);
lblmeterId = (TextView) findViewById(R.id.lblmeterId);
txtOutput = (TextView) findViewById(R.id.txtOutput);
txtMeterId = (EditText) findViewById(R.id.txtMeterId);
txtCommandNo = (EditText) findViewById(R.id.txtCommandNo);
txtCommandType = (Spinner) findViewById(R.id.txtCommandType);
bluetoothIn = new Handler() {
public void handleMessage(android.os.Message msg) {
if (msg.what == handlerState) {
byte[] readBuf = (byte[]) msg.obj;
receivedDataArray = BytesTrans.bytes2HexString(readBuf, msg.arg1);
StringBuilder RpacketFormat = new StringBuilder();
for (long value : receivedDataArray) {
RpacketFormat.append(value + " ");
}
String dataReceived = RpacketFormat.toString();
int dataLength = dataReceived.length();
txtString.setText("Received from Bluetooth: " + dataReceived);
if (receivedDataArray[0] == 82 && receivedDataArray[1] == 64) {
//find meterId from string
StringBuilder rMid = new StringBuilder();
String rMeterId = "";
for (int i = 2; i <= 5; i++) {
String hex = Integer.toHexString((int) (receivedDataArray[i] & 0xFF));
rMid.append(hex);
rMeterId = String.valueOf(rMid);
}
rMeterId = String.valueOf(Integer.parseInt(rMeterId, 16));
lblmeterId.setText("Received from Bluetooth: " + rMeterId);
//find command no from string
StringBuilder cId = new StringBuilder();
String cmdId = "";
cId.append(receivedDataArray[7]);
cmdId = String.valueOf(cId);
//cmdId= String.valueOf(Integer.parseInt(cmdId,16));
//find kilo liters from String
StringBuilder kId = new StringBuilder();
String kiloLiters = "";
for (int i = 9; i <= 12; i++) {
kId.append(receivedDataArray[i]);
kiloLiters = String.valueOf(kId);
//kiloLiters = kiloLiters.replace("0","");
}
kiloLiters = String.valueOf(Integer.parseInt(kiloLiters, 16));
//find kilo liters from String
StringBuilder lId = new StringBuilder();
String liters = "";
for (int i = 13; i <= 14; i++) {
lId.append(receivedDataArray[i]);
liters = String.valueOf(lId);
//liters = liters.replace("0","");
}
liters = String.valueOf(Integer.parseInt(liters, 16));
//find I data liters from String
StringBuilder iId = new StringBuilder();
String idata = "";
for (int i = 16; i <= 17; i++) {
iId.append(receivedDataArray[i]);
idata = String.valueOf(iId);
//idata = idata.replace("0","");
}
idata = String.valueOf(Integer.parseInt(idata, 16));
//find F data liters from String
StringBuilder fId = new StringBuilder();
String fdata = "";
for (int i = 18; i <= 19; i++) {
fId.append(receivedDataArray[i]);
fdata = String.valueOf(fId);
//fdata = fdata.replace("0","");
}
fdata = String.valueOf(Integer.parseInt(fdata, 16));
//find flag1 from string
StringBuilder f1Id = new StringBuilder();
String flag1 = "";
f1Id.append(receivedDataArray[21]);
flag1 = String.valueOf(f1Id);
cmdId = String.valueOf(Integer.parseInt(flag1, 16));
//find flag2 from string
StringBuilder f2Id = new StringBuilder();
String flag2 = "";
f2Id.append(receivedDataArray[22]);
flag2 = String.valueOf(f2Id);
flag2 = String.valueOf(Integer.parseInt(flag2, 16));
//find flag3 from string
StringBuilder f3Id = new StringBuilder();
String flag3 = "";
f3Id.append(receivedDataArray[23]);
flag3 = String.valueOf(f3Id);
flag3 = String.valueOf(Integer.parseInt(flag3, 16));
//find flag4 from string
StringBuilder f4Id = new StringBuilder();
String flag4 = "";
f4Id.append(receivedDataArray[24]);
flag4 = String.valueOf(f4Id);
flag4 = String.valueOf(Integer.parseInt(flag4, 16));
//find flag5 from string
StringBuilder f5Id = new StringBuilder();
String flag5 = "";
f5Id.append(receivedDataArray[25]);
flag5 = String.valueOf(f5Id);
flag5 = String.valueOf(Integer.parseInt(flag5, 16));
recDataString.delete(0, recDataString.length()); //clear all string data
Intent receivedData = new Intent(MainActivity.this, DisplayDate.class);
receivedData.putExtra("meterId", rMeterId);
receivedData.putExtra("cmdId", cmdId);
receivedData.putExtra("kiloLiters", kiloLiters);
receivedData.putExtra("liters", liters);
receivedData.putExtra("idata", idata);
receivedData.putExtra("fdata", fdata);
receivedData.putExtra("flag1", flag1);
receivedData.putExtra("flag2", flag2);
receivedData.putExtra("flag3", flag3);
receivedData.putExtra("flag4", flag4);
receivedData.putExtra("flag5", flag5);
receivedData.putExtra("dataReceived", dataReceived);
startActivity(receivedData);
} else {
Toast.makeText(getBaseContext(), "Please Try Again. not getting proper data. ", Toast.LENGTH_LONG).show();
packetFormat = new StringBuilder();
for (long value : receivedDataArray) {
packetFormat.append(value + " ");
}
packetRequest = packetFormat.toString();
lblmeterId.setText("Received Data: " + packetRequest);
}
}
}
};
btAdapter = BluetoothAdapter.getDefaultAdapter(); // get Bluetooth adapter
checkBTState();
}
@Override
public void onClick(View view) {
}
private BluetoothSocket createBluetoothSocket(BluetoothDevice device) throws IOException {
return device.createRfcommSocketToServiceRecord(BTMODULEUUID);
//creates secure outgoing connecetion with BT device using UUID
}
@Override
public void onResume() {
super.onResume();
//Get MAC address from DeviceListActivity via intent
Intent intent = getIntent();
//Get the MAC address from the DeviceListActivty via EXTRA
address = intent.getStringExtra(DeviceListActivity.EXTRA_DEVICE_ADDRESS);
//create device and set the MAC address
if (address != null) {
BluetoothDevice device = btAdapter.getRemoteDevice(address);
try {
btSocket = createBluetoothSocket(device);
} catch (IOException e) {
Toast.makeText(getBaseContext(), "Socket creation failed", Toast.LENGTH_LONG).show();
}
// Establish the Bluetooth socket connection.
try {
btSocket.connect();
} catch (IOException e) {
try {
btSocket.close();
} catch (IOException e2) {
//insert code to deal with this
}
}
}
mConnectedThread = new ConnectedThread(btSocket);
mConnectedThread.start();
//I send a character when resuming.beginning transmission to check device is connected
//If it is not an exception will be thrown in the write method and finish() will be called
// mConnectedThread.write("Hi Im Connected.");
}
@Override
public void onPause() {
super.onPause();
try {
//Don't leave Bluetooth sockets open when leaving activity
btSocket.close();
} catch (IOException e2) {
//insert code to deal with this
}
}
//Checks that the Android device Bluetooth is available and prompts to be turned on if off
private void checkBTState() {
if (btAdapter == null) {
Toast.makeText(getBaseContext(), "Device does not support bluetooth", Toast.LENGTH_LONG).show();
} else {
if (btAdapter.isEnabled()) {
} else {
Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableBtIntent, 1);
}
}
}
//create new class for connect thread
private class ConnectedThread extends Thread {
private final InputStream mmInStream;
private final OutputStream mmOutStream;
//creation of the connect thread
public ConnectedThread(BluetoothSocket socket) {
InputStream tmpIn = null;
OutputStream tmpOut = null;
try {
//Create I/O streams for connection
tmpIn = socket.getInputStream();
tmpOut = socket.getOutputStream();
} catch (IOException e) {
}
mmInStream = tmpIn;
mmOutStream = tmpOut;
}
public void run() {
byte[] buffer = new byte[29];
int bytes;
// Keep listening to the InputStream while connected
while (true) {
try {
// Read from the InputStream
bytes = mmInStream.read(buffer, 0, buffer.length);
// Send the obtained bytes to the UI Activity
bluetoothIn.obtainMessage(handlerState, bytes, -1, buffer).sendToTarget();
} catch (IOException e) {
break;
}
}
}
public void write(long[] packetFormatArray) {
//converts entered String into bytes
try {
for (int i = 0; i < packetFormatArray.length; i++) {
int msgBuffer = (int) packetFormatArray[i];
mmOutStream.write(msgBuffer);
}
} catch (IOException e) {
Toast.makeText(getBaseContext(), "Connection Failure", Toast.LENGTH_LONG).show();
finish();
}
}
}
}
这里是
public class BytesTrans {
public static long[] bytes2HexString(byte[] b, int count) {
long receivedData[] = new long[29];
String ret = "";
for (int i = 0; i < count; i++) {
String hex = Integer.toHexString(b[i] & 0xFF);
if (hex.length() ==1) {
hex = '0' + hex;
}
String capsHex= hex.toUpperCase();
receivedData[i] = Long.parseLong(capsHex,16);
ret += hex.toUpperCase() + " ";
}
return receivedData;
}
}
答案 0 :(得分：0)
这是代码
public void run() {
byte[] buffer = new byte[28]; // buffer store for the stream
int bytes=0
while (true) {
try {
// Read from the InputStream
// Get number of bytes and message in "buffer"
for (int i = 0; i < buffer.length; i++) {
bytes = mmInStream.read();
receivedDataArray[i] = bytes;
}
long abc[] = receivedDataArray;
bluetoothIn.obtainMessage(handlerState, bytes, -1, receivedDataArray).sendToTarget();
}
catch (IOException e) {
e.printStackTrace();
break;
}
}