ControllerActivity.java

package in.justrobotics.jrbluetoothcontrol;

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.drm.DrmStore;
import android.os.Handler;
import android.os.SystemClock;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.ActionBar;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.Toast;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.lang.reflect.Method;
import java.util.Set;
import java.util.UUID;

import me.aflak.bluetooth.Bluetooth;
import me.aflak.bluetooth.BluetoothCallback;
import me.aflak.bluetooth.DeviceCallback;
import me.aflak.bluetooth.DiscoveryCallback;

public class ControllerActivity extends AppCompatActivity {

    private ListView mDevicesListView;
    private ImageView Up, Down, Left, Right;
    private int commandFromForward, commandFromReverse, commandFromLeft, commandFromRight;
    private final String TAG = ControllerActivity.class.getSimpleName();
    private Handler mHandler;
    private BluetoothSocket mBTSocket = null;

    private static final UUID BTMODULEUUID = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"); // "random" unique identifier
    private final static int REQUEST_ENABLE_BT = 1; // used to identify adding bluetooth names
    private final static int MESSAGE_READ = 2; // used in bluetooth handler to identify message update
    private final static int CONNECTING_STATUS = 3; // used in bluetooth handler to identify message status
    Bluetooth bluetoothObject;
    String address;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_controller);
        ActionBar actionBar = getSupportActionBar();
        actionBar.setDisplayHomeAsUpEnabled(true);
        bluetoothObject = new Bluetooth(getApplicationContext());
        bluetoothObject.onStart();
        bluetoothObject.enable();
        bluetoothObject.setBluetoothCallback(new BluetoothCallback() {
            @Override
            public void onBluetoothTurningOn() {

            }

            @Override
            public void onBluetoothOn() {

            }

            @Override
            public void onBluetoothTurningOff() {

            }

            @Override
            public void onBluetoothOff() {

            }

            @Override
            public void onUserDeniedActivation() {

            }
        });
        bluetoothObject.setDiscoveryCallback(new DiscoveryCallback() {
            @Override
            public void onDiscoveryStarted() {

            }

            @Override
            public void onDiscoveryFinished() {

            }

            @Override
            public void onDeviceFound(BluetoothDevice device) {

            }

            @Override
            public void onDevicePaired(BluetoothDevice device) {

            }

            @Override
            public void onDeviceUnpaired(BluetoothDevice device) {

            }

            @Override
            public void onError(String message) {

            }
        });
        bluetoothObject.setDeviceCallback(new DeviceCallback() {
            @Override
            public void onDeviceConnected(BluetoothDevice device) {
                bluetoothObject.send("onDeviceConnected\n");
                Log.d(TAG, "onDeviceConnected: Sent data maybe");
//                Toast.makeText(getApplicationContext(), "Sent data maybe", Toast.LENGTH_SHORT).show();
            }

            @Override
            public void onDeviceDisconnected(BluetoothDevice device, String message) {

            }

            @Override
            public void onMessage(String message) {

            }

            @Override
            public void onError(String message) {

            }

            @Override
            public void onConnectError(BluetoothDevice device, String message) {

            }
        });
        Up = (ImageView) findViewById(R.id.upfwd);
        Down = (ImageView) findViewById(R.id.downbk);
        Left = (ImageView) findViewById(R.id.leftlt);
        Right = (ImageView) findViewById(R.id.rightrt);
        commandFromForward = 0;
        commandFromReverse = 0;
        commandFromLeft = 0;
        commandFromRight = 0;
        address=getIntent().getExtras().getString("ADDRESS");
        Toast.makeText(getApplicationContext(), address, Toast.LENGTH_SHORT).show();
        if (bluetoothObject!=null && address!=null){
            Toast.makeText(getApplicationContext(), "Both addr and bt not null, proceeding to connect", Toast.LENGTH_SHORT).show();
            bluetoothObject.connectToAddress(address);
//            bluetoothObject.send("Hello\n");
        }
        if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED)
            ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_COARSE_LOCATION}, 1);

        Up.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                if (event.getAction() == MotionEvent.ACTION_DOWN) {
                    if (bluetoothObject.isConnected()){
                        Toast.makeText(getApplicationContext(), "Attempting to send data", Toast.LENGTH_SHORT).show();
                        bluetoothObject.send("upClicked");
                        Toast.makeText(getApplicationContext(), "Probably sent data!!", Toast.LENGTH_SHORT).show();
                    }
                }
                if (event.getAction() == MotionEvent.ACTION_UP) {
                    commandFromForward = 0;
                }
                return false;
            }
        });
        Down.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                if (event.getAction() == MotionEvent.ACTION_DOWN) {
                    commandFromReverse = 2;
                }
                if (event.getAction() == MotionEvent.ACTION_UP) {
                    commandFromReverse = 0;
                }
                return false;
            }
        });
        Left.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                if (event.getAction() == MotionEvent.ACTION_DOWN) {
                    commandFromLeft = 4;
                }
                if (event.getAction() == MotionEvent.ACTION_UP) {
                    commandFromLeft = 0;
                }
                return false;
            }
        });
        Right.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                if (event.getAction() == MotionEvent.ACTION_DOWN) {
                    commandFromRight = 8;
                }
                if (event.getAction() == MotionEvent.ACTION_UP) {
                    commandFromRight = 0;
                }
                return false;
            }
        });
    }


/*        final Handler ha=new Handler();
        ha.postDelayed(new Runnable() {
            @Override
            public void run() {
                if (mConnectedThread != null) {
                    sendCumulativeCommand(commandFromForward,commandFromReverse,commandFromLeft,commandFromRight);
                }
                ha.postDelayed(this, 100);
            }
        }, 100);
    }*/


    public void sendCumulativeCommand ( int fd, int bk, int rt, int lt){
        int cumulativeCommand = fd + bk + rt + lt;
    }
    @Override
    public boolean onCreateOptionsMenu (Menu menu){

        getMenuInflater().inflate(R.menu.stdc_menu, menu);
        return true;
    }


    @Override
    public boolean onOptionsItemSelected (MenuItem item){
        int id = item.getItemId();
        switch (id) {
            case R.id.howtouse_controller:
                displayAboutStandardController();
                break;
            case android.R.id.home:
                this.finish();
                break;
        }
        return true;
    }

    public void displayAboutStandardController () {
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setTitle("About the standard controller");
        builder.setMessage(R.string.about_stdc);
        builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                dialog.dismiss();
            }
        });
        builder.show();
    }
}