SeekBar и Arduino

package com.example.jdroidcoder.seekbar;
 
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothSocket;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.SeekBar;
import android.widget.TextView;
import android.widget.Toast;
 
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.UUID;
 
public class MainActivity extends AppCompatActivity implements SeekBar.OnSeekBarChangeListener {
 
    private int stepOver9500A = 500, stepOver9500B = 500, stepOver15 = 1;
    private int maxStepOver9500A = 9500, maxStepOver9500B = 9500, maxStepOver15 = 15;
    private int minStepOver9500A = 2000, minStepOver9500B = 2000, minStepOver15 = 0;
    private TextView indicator9500A, indicator9500B, indicator15;
    private SeekBar seekBarOver9500A, seekBarOver9500B, seekBarOver15;
    private BluetoothSocket clientSocket;
    private static String address = "20:16:03:22:97:81";
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
 
        initWidgets();
    }
 
    private void initWidgets() {
        indicator9500A = (TextView) findViewById(R.id.indicator9500A);
        indicator9500A.setText(String.valueOf(2000));
 
        indicator9500B = (TextView) findViewById(R.id.indicator9500B);
        indicator9500B.setText(String.valueOf(2000));
 
        indicator15 = (TextView) findViewById(R.id.indicator15);
        indicator15.setText(String.valueOf(0));
 
        seekBarOver9500B = (SeekBar) findViewById(R.id.seekBarOver9500B);
        seekBarOver9500B.setMax((maxStepOver9500B - minStepOver9500B) / stepOver9500B);
        seekBarOver9500B.setOnSeekBarChangeListener(this);
 
        seekBarOver9500A = (SeekBar) findViewById(R.id.seekBarOver9500A);
        seekBarOver9500A.setMax((maxStepOver9500A - minStepOver9500A) / stepOver9500A);
        seekBarOver9500A.setOnSeekBarChangeListener(this);
 
        seekBarOver15 = (SeekBar) findViewById(R.id.seekBarOver15);
        seekBarOver15.setMax((maxStepOver15 - minStepOver15) / stepOver15);
        seekBarOver15.setOnSeekBarChangeListener(this);
    }
 
    @Override
    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
        switch (seekBar.getId()) {
            case R.id.seekBarOver9500A:
                indicator9500A.setText(String.valueOf(minStepOver9500A + (progress * stepOver9500A)));
                break;
            case R.id.seekBarOver9500B:
                indicator9500B.setText(String.valueOf(minStepOver9500B + (progress * stepOver9500B)));
                break;
            case R.id.seekBarOver15:
                indicator15.setText(String.valueOf(minStepOver15 + (progress * stepOver15)));
                break;
 
        }
    }
 
    @Override
    public void onStartTrackingTouch(SeekBar seekBar) {
        switch (seekBar.getId()) {
            case R.id.seekBarOver9500A:
                Toast.makeText(MainActivity.this,"!!!",Toast.LENGTH_SHORT).show();
                break;
            case R.id.seekBarOver9500B:
                Toast.makeText(MainActivity.this,"!!!!",Toast.LENGTH_SHORT).show();
                break;
            case R.id.seekBarOver15:
                Toast.makeText(MainActivity.this,"!!!!!",Toast.LENGTH_SHORT).show();
                break;
 
        }
    }
 
    @Override
    public void onStopTrackingTouch(SeekBar seekBar) {
 
    }
 
    public void read(View view) {
 
        try {
            bluetooth();
 
            int bufferSize = 1024;
            byte[] buffer = new byte[bufferSize];
            int[] abc = new int[3];
            int i =0;
            try {
                InputStream instream = clientSocket.getInputStream();
                int bytesRead = -1;
                while (i<3) {
                    bytesRead = instream.read(buffer);
                    if (bytesRead != -1) {
                        while ((bytesRead == bufferSize) && (buffer[bufferSize-1] != 0)){
                            abc[i] = bytesRead;
 
                        }
                        i++;
                        return ;
                    }
                }
            } catch (IOException e) {}
 
            int a = abc[0];
            int b = abc[1];
            int c = abc[2];
 
            indicator9500A.setText(String.valueOf(a));
            indicator9500B.setText(String.valueOf(b));
            indicator15.setText(String.valueOf(c));
 
            seekBarOver9500A.setProgress(a);
            seekBarOver9500B.setProgress(b);
            seekBarOver15.setProgress(c);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
 
    public void write(View view) {
        try {
            bluetooth();
            OutputStream outStream = clientSocket.getOutputStream();
 
            Integer a = Integer.parseInt(indicator9500A.getText().toString());
            Integer b = Integer.parseInt(indicator9500B.getText().toString());
            Integer c = Integer.parseInt(indicator15.getText().toString());
 
            byte[] byteArray = String.valueOf(a).getBytes();
            byteArray[byteArray.length - 1] = 0;
            outStream.write(byteArray);
 
            byte[] byteArray1 = String.valueOf(b).getBytes();
            byteArray1[byteArray1.length - 1] = 0;
            outStream.write(byteArray1);
 
            byte[] byteArray2 = String.valueOf(c).getBytes();
            byteArray2[byteArray2.length - 1] = 0;
            outStream.write(byteArray2);
 
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
 
    private void bluetooth(){
        Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
        startActivity(enableBtIntent);
 
        BluetoothAdapter bluetooth = BluetoothAdapter.getDefaultAdapter();
 
        try{
            BluetoothDevice device = bluetooth.getRemoteDevice(address);
            UUID uuid = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB");
 
             clientSocket = device.createRfcommSocketToServiceRecord(uuid);
 
            clientSocket.connect();
 
        } catch (IOException e) {
            e.printStackTrace();
        } catch (SecurityException e) {
            e.printStackTrace();
        }
 
        Toast.makeText(getApplicationContext(), "Подключено", Toast.LENGTH_LONG).show();
    }
}