Page 76 - MDP2022-2

import android.Manifest;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothSocket;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentFilter;

import android.content.pm.PackageManager;
import android.os.Bundle;
import android.os.Handler;
import android.os.SystemClock;
import android.util.Log;
import android.view.View;

import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;

import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

import java.io.IOException;
import java.io.InputStream;

import java.io.OutputStream;
import java.io.PipedInputStream;
import java.io.UnsupportedEncodingException;
import java.lang.reflect.Method;

import java.util.ArrayList;
import java.util.List;
import java.util.Set;
import java.util.UUID;

public class MainActivity extends AppCompatActivity {

TextView mTvBluetoothStatus;
TextView mTvReceiveData;
Button mBtnBluetoothOn;

Button mBtnBluetoothOff;
Button mBtnConnect;