Problème de communication Bluetooth Android Studio
Bonjour ,
J'ai essayé d'envoyer une lettre (par exemple 'A') en cliquant sur un bouton mais toujours l'application se ferme brusquement.
je cherche à établir cette communication à la classe (entrainement.java) pour mon projet de fin d'études.
Merci
entrainement.java
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|
package com.example.pfe;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.os.Handler;
import android.os.Message;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
public class entrainement extends AppCompatActivity {
Button btn6,btn7,btn8,btn16,btn9,btn5;
EditText txt;
TextView logview;
private BtInterface bt ;
private long lastTime = 0;
final Handler handler = new Handler() {
public void handleMessage(Message msg) {
String data = msg.getData().getString("receivedData");
long t = System.currentTimeMillis();
if(t-lastTime > 100) {// Pour éviter que les messages soit coupés
logview.append("\n");
lastTime = System.currentTimeMillis();
}
logview.append(data);
}
};
final Handler handlerStatus = new Handler() {
public void handleMessage(Message msg) {
int co = msg.arg1;
if(co == 1) {
logview.append("Connected\n");
} else if(co == 2) {
logview.append("Disconnected\n");
}
}
};
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.entrainement);
btn6 = findViewById(R.id.button6);
btn7 = findViewById(R.id.button7);
btn8 = findViewById(R.id.button8);
btn16 = findViewById(R.id.button16);
btn9 = findViewById(R.id.button9);
btn5 = findViewById(R.id.button5);
txt = findViewById(R.id.editText2);
logview = findViewById(R.id.textView14);
// bt = new BtInterface(handlerStatus, handler);
btn6.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
bt.sendData("R");
}
});
btn16.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
bt.sendData("L");
}
});
btn7.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
bt.sendData("X");
}
});
btn8.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
bt.sendData("Y");
}
});
btn5.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
bt.connect();
}
});
btn9.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
bt.sendData(txt.getText().toString());
}
});
}
} |
BtInterface.java
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| package com.example.pfe;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Set;
import java.util.UUID;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothSocket;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
public class BtInterface {
private BluetoothDevice device = null;
private BluetoothSocket socket = null;
private InputStream receiveStream = null;
private OutputStream sendStream = null;
private ReceiverThread receiverThread;
Handler handler;
public BtInterface(Handler hstatus, Handler h) {
Set<BluetoothDevice> setpairedDevices = BluetoothAdapter.getDefaultAdapter().getBondedDevices();
BluetoothDevice[] pairedDevices = (BluetoothDevice[]) setpairedDevices.toArray(new BluetoothDevice[setpairedDevices.size()]);
for(int i=0;i<pairedDevices.length;i++) {
if(pairedDevices[i].getName().contains("ModuleBluetooth")) {
device = pairedDevices[i];
try {
socket = device.createRfcommSocketToServiceRecord(UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"));
receiveStream = socket.getInputStream();
sendStream = socket.getOutputStream();
} catch (IOException e) {
e.printStackTrace();
}
break;
}
}
handler = hstatus;
receiverThread = new ReceiverThread(h);
}
public void sendData(String data) {
sendData(data, false);
}
public void sendData(String data, boolean deleteScheduledData) {
try {
sendStream.write(data.getBytes());
sendStream.flush();
} catch (IOException e) {
e.printStackTrace();
}
}
public void connect() {
new Thread() {
@Override public void run() {
try {
socket.connect();
Message msg = handler.obtainMessage();
msg.arg1 = 1;
handler.sendMessage(msg);
receiverThread.start();
} catch (IOException e) {
Log.v("N", "Connection Failed : "+e.getMessage());
e.printStackTrace();
}
}
}.start();
}
public void close() {
try {
socket.close();
} catch (IOException e) {
e.printStackTrace();
}
}
public BluetoothDevice getDevice() {
return device;
}
private class ReceiverThread extends Thread {
Handler handler;
ReceiverThread(Handler h) {
handler = h;
}
@Override public void run() {
while(true) {
try {
if(receiveStream.available() > 0) {
byte buffer[] = new byte[100];
int k = receiveStream.read(buffer, 0, 100);
if(k > 0) {
byte rawdata[] = new byte[k];
for(int i=0;i<k;i++)
rawdata[i] = buffer[i];
String data = new String(rawdata);
Message msg = handler.obtainMessage();
Bundle b = new Bundle();
b.putString("receivedData", data);
msg.setData(b);
handler.sendMessage(msg);
}
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
} |
