我在android studio中编写了以下代码，以便在输入其MAC地址后使用Connect按钮连接到HC-06蓝牙模块，如代码所示。我希望能够连接到我的蓝牙模块并在我的屏幕上返回蓝牙连接以及在按下断开连接时断开连接。不幸的是，这些按钮都没有执行所需的操作。请帮助我解决我的以下代码以及控制器按钮代码。谢谢！
这是清单：
<uses-permission android:name="android.permission.BLUETOOTH" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
我在连接上按了无数次，没有任何反馈。
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothSocket;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.content.Intent;
import android.text.TextUtils;
import android.view.MotionEvent;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import java.io.IOException;
import android.widget.Toast;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Set;
import java.util.UUID;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;
public class RemoteControl extends AppCompatActivity implements View.OnClickListener {
private FirebaseAuth firebaseAuth;
private TextView emailDisplay;
private Button logout;
private final String Bluetooth_Address = "98:D3:51:F9:33:AC";
private final UUID PORT_UUID = UUID.fromString("00001101-0000-1000-8000-00805f9b34fb");
private BluetoothDevice device;
private BluetoothSocket socket;
private OutputStream outputStream;
private InputStream inputStream;
private Button Forward_btn, Right_btn, Left_btn, Reverse_btn, Stop_btn, Bluetooth_connect,Bluetooth_disconnect;
String command;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_remote_control);
firebaseAuth = FirebaseAuth.getInstance();
if (firebaseAuth.getCurrentUser() == null) {
finish();
startActivity(new Intent(this, MainActivity.class));
}
FirebaseUser user = firebaseAuth.getCurrentUser();
emailDisplay = (TextView) (findViewById(R.id.textView));
emailDisplay.setText("Welcome " + user.getEmail());
logout = (Button) findViewById(R.id.logout);
logout.setOnClickListener(this);
//declaring button variables
Forward_btn = (Button) findViewById(R.id.Forward);
Right_btn = (Button) findViewById(R.id.Right);
Left_btn = (Button) findViewById(R.id.Left);
Reverse_btn = (Button) findViewById(R.id.backward);
Stop_btn = (Button) findViewById(R.id.stop);
Bluetooth_connect = (Button) findViewById(R.id.connect);
Bluetooth_disconnect=(Button)findViewById(R.id.disconnect);
}
@Override
public void onClick(View view) {
if (view == logout) {
firebaseAuth.signOut();
finish();
startActivity(new Intent(this, MainActivity.class));
}
//OnTouchListener code for the forward button (button long press
Forward_btn.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN)//MotionEvent.ACTION_DOWN is when you hold a button down
{
command = "1";
try {
outputStream.write(command.getBytes());
} catch (IOException e) {
e.printStackTrace();
}
} else if (event.getAction() == MotionEvent.ACTION_UP)//When you release the button
{
command = "10";
try {
outputStream.write(command.getBytes());
} catch (IOException e) {
e.printStackTrace();
}
}
return false;
}
});
//OnTouchListener code for the reverse button (button long press)
Reverse_btn.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
command = "2";
try {
outputStream.write(command.getBytes());
} catch (IOException e) {
e.printStackTrace();
}
} else if (event.getAction() == MotionEvent.ACTION_UP) {
command = "10";
try {
outputStream.write(command.getBytes());
} catch (IOException e) {
e.printStackTrace();
}
}
return false;
}
});
//OnTouchListener code for the left button (button long press)
Left_btn.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
command = "3";
try {
outputStream.write(command.getBytes());
} catch (IOException e) {
e.printStackTrace();
}
} else if (event.getAction() == MotionEvent.ACTION_UP) {
command = "10";
try {
outputStream.write(command.getBytes());
} catch (IOException e) {
e.printStackTrace();
}
}
return false;
}
});
//OnTouchListener code for the right button (button long press)
Right_btn.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
command = "4";
try {
outputStream.write(command.getBytes());
} catch (IOException e) {
e.printStackTrace();
}
} else if (event.getAction() == MotionEvent.ACTION_UP) {
command = "10";
try {
outputStream.write(command.getBytes());
} catch (IOException e) {
e.printStackTrace();
}
}
return false;
}
});
Stop_btn.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_DOWN) {
command = "5";
try {
outputStream.write(command.getBytes());
} catch (IOException e) {
e.printStackTrace();
}
} else if (event.getAction() == MotionEvent.ACTION_UP) {
command = "10";
try {
outputStream.write(command.getBytes());
} catch (IOException e) {
e.printStackTrace();
}
}
return false;
}
});
//Button that connects the device to the bluetooth module when pressed
Bluetooth_connect.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (BTinit()) {
BTconnect();
}
}
});
//add function to disconnect bluetooth here
Bluetooth_disconnect.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
resetConnection();
if(true){
Toast.makeText(getApplicationContext(),"Bluetooth connection disconnected",Toast.LENGTH_SHORT).show();
}
}
});
}
//initialise bluetooth module
public boolean BTinit() {
boolean found = false;
BluetoothAdapter bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
if (bluetoothAdapter == null)//checks if the intended device supports bluetooth
{
Toast.makeText(getApplicationContext(), "Device does not support Bluetooth", Toast.LENGTH_SHORT).show();
}
if (!bluetoothAdapter.isEnabled()) {
Intent enableAdapter = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableAdapter, 0);
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
Set<BluetoothDevice> bondedDevices = bluetoothAdapter.getBondedDevices();
if (bondedDevices.isEmpty())//check for paired bluetooth device
{
Toast.makeText(getApplicationContext(), "Please pair device first", Toast.LENGTH_SHORT).show();
} else {
for (BluetoothDevice iterator : bondedDevices) {
if (iterator.getAddress().equals(Bluetooth_Address)) {
device = iterator;
found = true;
break;
}
}
}
return found;
}
public boolean BTconnect() {
boolean connected = true;
try {
socket = device.createRfcommSocketToServiceRecord(PORT_UUID);
socket.connect();
Toast.makeText(getApplicationContext(), "Bluetooth device connected", Toast.LENGTH_SHORT).show();
;
} catch (IOException e) {
e.printStackTrace();
connected = false;
}
if (connected) {
try {
outputStream = socket.getOutputStream();//gets output stream of socket
} catch (IOException e) {
e.printStackTrace();
}
}
return connected;
}
private void resetConnection(){
if(inputStream!=null){
try{
inputStream.close();
}
catch (IOException e){
e.printStackTrace();
}
inputStream=null;
}
if(outputStream!=null){
try{
outputStream.close();
}
catch(IOException e){
e.printStackTrace();
}
outputStream=null;
}
if(socket!=null){
try{
socket.close();
}
catch (IOException e){
e.printStackTrace();
}
socket=null;
}
}
@Override
protected void onStart() {
super.onStart();
}
}
我需要连接按钮来连接到 HC 06 并在按下断开连接时断开套接字连接