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aquariumDroid.java - android companion app to aquaPi.py
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| package me.davidvassallo.aquarium; | |
| import java.io.IOException; | |
| import java.io.InputStream; | |
| import java.io.OutputStream; | |
| import java.util.Set; | |
| import java.util.UUID; | |
| import android.app.Activity; | |
| import android.bluetooth.BluetoothAdapter; | |
| import android.bluetooth.BluetoothDevice; | |
| import android.bluetooth.BluetoothSocket; | |
| import android.content.Intent; | |
| import android.os.Bundle; | |
| import android.os.Handler; | |
| import android.util.Log; | |
| import android.view.Menu; | |
| import android.view.View; | |
| import android.widget.Button; | |
| import android.widget.TextView; | |
| public class MainActivity extends Activity { | |
| BluetoothSocket mmSocket; | |
| BluetoothDevice mmDevice = null; | |
| final byte delimiter = 33; | |
| int readBufferPosition = 0; | |
| public void sendBtMsg(String msg2send){ | |
| //UUID uuid = UUID.fromString("00001101-0000-1000-8000-00805f9b34fb"); //Standard SerialPortService ID | |
| UUID uuid = UUID.fromString("94f39d29-7d6d-437d-973b-fba39e49d4ee"); //Standard SerialPortService ID | |
| try { | |
| mmSocket = mmDevice.createRfcommSocketToServiceRecord(uuid); | |
| if (!mmSocket.isConnected()){ | |
| mmSocket.connect(); | |
| } | |
| String msg = msg2send; | |
| //msg += "\n"; | |
| OutputStream mmOutputStream = mmSocket.getOutputStream(); | |
| mmOutputStream.write(msg.getBytes()); | |
| } catch (IOException e) { | |
| // TODO Auto-generated catch block | |
| e.printStackTrace(); | |
| } | |
| } | |
| @Override | |
| protected void onCreate(Bundle savedInstanceState) { | |
| super.onCreate(savedInstanceState); | |
| setContentView(R.layout.activity_main); | |
| final Handler handler = new Handler(); | |
| final TextView myLabel = (TextView) findViewById(R.id.btResult); | |
| final Button tempButton = (Button) findViewById(R.id.tempButton); | |
| final Button lightOnButton = (Button) findViewById(R.id.lightOn); | |
| final Button lightOffButton = (Button) findViewById(R.id.lightOff); | |
| BluetoothAdapter mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter(); | |
| final class workerThread implements Runnable { | |
| private String btMsg; | |
| public workerThread(String msg) { | |
| btMsg = msg; | |
| } | |
| public void run() | |
| { | |
| sendBtMsg(btMsg); | |
| while(!Thread.currentThread().isInterrupted()) | |
| { | |
| int bytesAvailable; | |
| boolean workDone = false; | |
| try { | |
| final InputStream mmInputStream; | |
| mmInputStream = mmSocket.getInputStream(); | |
| bytesAvailable = mmInputStream.available(); | |
| if(bytesAvailable > 0) | |
| { | |
| byte[] packetBytes = new byte[bytesAvailable]; | |
| Log.e("Aquarium recv bt","bytes available"); | |
| byte[] readBuffer = new byte[1024]; | |
| mmInputStream.read(packetBytes); | |
| for(int i=0;i<bytesAvailable;i++) | |
| { | |
| byte b = packetBytes[i]; | |
| if(b == delimiter) | |
| { | |
| byte[] encodedBytes = new byte[readBufferPosition]; | |
| System.arraycopy(readBuffer, 0, encodedBytes, 0, encodedBytes.length); | |
| final String data = new String(encodedBytes, "US-ASCII"); | |
| readBufferPosition = 0; | |
| //The variable data now contains our full command | |
| handler.post(new Runnable() | |
| { | |
| public void run() | |
| { | |
| myLabel.setText(data); | |
| } | |
| }); | |
| workDone = true; | |
| break; | |
| } | |
| else | |
| { | |
| readBuffer[readBufferPosition++] = b; | |
| } | |
| } | |
| if (workDone == true){ | |
| mmSocket.close(); | |
| break; | |
| } | |
| } | |
| } catch (IOException e) { | |
| // TODO Auto-generated catch block | |
| e.printStackTrace(); | |
| } | |
| } | |
| } | |
| }; | |
| // start temp button handler | |
| tempButton.setOnClickListener(new View.OnClickListener() { | |
| public void onClick(View v) { | |
| // Perform action on temp button click | |
| (new Thread(new workerThread("temp"))).start(); | |
| } | |
| }); | |
| //end temp button handler | |
| //start light on button handler | |
| lightOnButton.setOnClickListener(new View.OnClickListener() { | |
| public void onClick(View v) { | |
| // Perform action on temp button click | |
| (new Thread(new workerThread("lightOn"))).start(); | |
| } | |
| }); | |
| //end light on button handler | |
| //start light off button handler | |
| lightOffButton.setOnClickListener(new View.OnClickListener() { | |
| public void onClick(View v) { | |
| // Perform action on temp button click | |
| (new Thread(new workerThread("lightOff"))).start(); | |
| } | |
| }); | |
| // end light off button handler | |
| if(!mBluetoothAdapter.isEnabled()) | |
| { | |
| Intent enableBluetooth = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE); | |
| startActivityForResult(enableBluetooth, 0); | |
| } | |
| Set<BluetoothDevice> pairedDevices = mBluetoothAdapter.getBondedDevices(); | |
| if(pairedDevices.size() > 0) | |
| { | |
| for(BluetoothDevice device : pairedDevices) | |
| { | |
| if(device.getName().equals("raspberrypi-0")) //Note, you will need to change this to match the name of your device | |
| { | |
| Log.e("Aquarium",device.getName()); | |
| mmDevice = device; | |
| break; | |
| } | |
| } | |
| } | |
| } | |
| @Override | |
| public boolean onCreateOptionsMenu(Menu menu) { | |
| // Inflate the menu; this adds items to the action bar if it is present. | |
| getMenuInflater().inflate(R.menu.main, menu); | |
| return true; | |
| } | |
| } |
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