Develop Reference

bluetooth as service and send/receive from it

I'm trying to recieve/send data to arduino board using bluetooth, and I can connect to board from one activity. I know that I can make my other activities connect with bluetooth using service but I don't know how to make bluetooth as service. and i don't know how to send and recieve from it.
my Paired Devices code:
public class BTConnect extends AppCompatActivity {
private static final String TAG = "BTConnect";
ListView IdLista;
public static String EXTRA_DEVICE_ADDRESS = "device_address";
private BluetoothAdapter mBtAdapter;
private ArrayAdapter<String> mPairedDevicesArrayAdapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_btconnect);
}
#Override
public void onResume()
{
super.onResume();
//---------------------------------
VerificarEstadoBT();
//
mPairedDevicesArrayAdapter = new ArrayAdapter<String>(this, R.layout.btconnect_nombre);
IdLista = (ListView)findViewById(R.id.Id2);
IdLista.setAdapter(mPairedDevicesArrayAdapter);
IdLista.setOnItemClickListener(mDeviceClickListener);
mBtAdapter = BluetoothAdapter.getDefaultAdapter();
Set<BluetoothDevice> pairedDevices = mBtAdapter.getBondedDevices();
if (pairedDevices.size() > 0)
{
for (BluetoothDevice device: pairedDevices) {
mPairedDevicesArrayAdapter.add(device.getName() + "\n" + device.getAddress());
}
}
}
private AdapterView.OnItemClickListener mDeviceClickListener = new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView av, View v, int arg2, long arg3) {
String info = ((TextView) v).getText().toString();
String address = info.substring(info.length() - 17);
Intent i = new Intent(BTConnect.this, device.class);
i.putExtra(EXTRA_DEVICE_ADDRESS, address);
startActivity(i);
}
};
private void VerificarEstadoBT() {
mBtAdapter= BluetoothAdapter.getDefaultAdapter();
if(mBtAdapter==null) {
Toast.makeText(getBaseContext(), "the device can't connect to BT", Toast.LENGTH_SHORT).show();
} else {
if (mBtAdapter.isEnabled()) {
Log.d(TAG, "...Bluetooth Activation...");
} else {
Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableBtIntent, 1);
}
}
}}
And my first activity 'device' :
public class device extends AppCompatActivity {
Button IdEncender, IdApagar,IdDesconectar,IdReset;
ArrayList<String> addArray = new ArrayList<String>();
ListView show;
//-------------------------------------------
Handler bluetoothIn;
final int handlerState = 0;
private BluetoothAdapter btAdapter = null;
private BluetoothSocket btSocket = null;
private StringBuilder DataStringIN = new StringBuilder();
private ConnectedThread MyConexionBT;
// Identificador unico de servicio - SPP UUID
private static final UUID BTMODULEUUID = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB");
// String para la direccion MAC
private static String address = null;
//-------------------------------------------
#SuppressLint("HandlerLeak")
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_device);
IdEncender = (Button) findViewById(R.id.IdEncender);
IdApagar = (Button) findViewById(R.id.IdApagar);
IdDesconectar = (Button) findViewById(R.id.IdDisconectar);
show = (ListView) findViewById(R.id.LIST1) ;
IdReset=(Button)findViewById(R.id.IdReset);
bluetoothIn = new Handler() {
public void handleMessage(android.os.Message msg) {
if (msg.what == handlerState) {
String readMessage = (String) msg.obj;
DataStringIN.append(readMessage);
int endOfLineIndex = DataStringIN.indexOf("#");
if (endOfLineIndex > 0) {
String dataInPrint = DataStringIN.substring(0, endOfLineIndex);
String newline = "\r\n";
DataStringIN.delete(0, DataStringIN.length());
//--List adapter--//
addArray.add(dataInPrint);
ArrayAdapter<String> adapter =new ArrayAdapter<String>(device.this, android.R.layout.simple_list_item_1, addArray);
show.setAdapter(adapter);
}
}
};
btAdapter = BluetoothAdapter.getDefaultAdapter(); // get Bluetooth adapter
VerificarEstadoBT();
IdEncender.setOnClickListener(new View.OnClickListener() {
public void onClick(View v)
{
MyConexionBT.write("1");
}
});
IdApagar.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
MyConexionBT.write("0");
}
});
IdDesconectar.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
if (btSocket!=null)
{
try {btSocket.close();}
catch (IOException e)
{ Toast.makeText(getBaseContext(), "Error", Toast.LENGTH_SHORT).show();;}
}
finish();
}
});
configurebutton();
}
private void configurebutton() {
Button startbutton = (Button)findViewById(R.id.Start);
startbutton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
startActivity(new Intent(device.this,chart.class));
}
});
}
private BluetoothSocket createBluetoothSocket(BluetoothDevice device) throws IOException
{
return device.createRfcommSocketToServiceRecord(BTMODULEUUID);
}
#Override
public void onResume()
{
super.onResume();
Intent intent = getIntent();
address = intent.getStringExtra(BTConnect.EXTRA_DEVICE_ADDRESS);
BluetoothDevice device = btAdapter.getRemoteDevice(address);
try
{
btSocket = createBluetoothSocket(device);
} catch (IOException e) {
Toast.makeText(getBaseContext(), "fail", Toast.LENGTH_LONG).show();
}
try
{
btSocket.connect();
} catch (IOException e) {
try {
btSocket.close();
} catch (IOException e2) {}
}
MyConexionBT = new ConnectedThread(btSocket);
MyConexionBT.start();
}
#Override
public void onPause()
{
super.onPause();
try
{
btSocket.close();
} catch (IOException e2) {}
}
private void VerificarEstadoBT() {
if(btAdapter==null) {
Toast.makeText(getBaseContext(), "error in bluetooth connection", Toast.LENGTH_LONG).show();
} else {
if (btAdapter.isEnabled()) {
} else {
Intent enableBtIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableBtIntent, 1);
}
}
}
public void savefile(String file, String text){
try {
FileOutputStream fos = openFileOutput(file, Context.MODE_APPEND);
fos.write(text.getBytes());
fos.close();
Toast.makeText(device.this, "saved!", Toast.LENGTH_LONG).show();
} catch (IOException e) {
e.printStackTrace();
Toast.makeText(device.this,"error",Toast.LENGTH_LONG).show();
}
}
//Crea la clase que permite crear el evento de conexion
private class ConnectedThread extends Thread
{
private final InputStream mmInStream;
private final OutputStream mmOutStream;
public ConnectedThread(BluetoothSocket socket)
{
InputStream tmpIn = null;
OutputStream tmpOut = null;
try
{
tmpIn = socket.getInputStream();
tmpOut = socket.getOutputStream();
} catch (IOException e) { }
mmInStream = tmpIn;
mmOutStream = tmpOut;
}
public void run()
{
byte[] buffer = new byte[256];
int bytes;
while (true) {
try {
bytes = mmInStream.read(buffer);
String readMessage = new String(buffer, 0, bytes);
bluetoothIn.obtainMessage(handlerState, bytes, -1, readMessage).sendToTarget();
} catch (IOException e) {
break;
}
}
}
public void write(String input)
{
try {
mmOutStream.write(input.getBytes());
}
catch (IOException e)
{
Toast.makeText(getBaseContext(), "fail to connect", Toast.LENGTH_LONG).show();
finish();
}
}
}
}

If shortly move your connection/message_exchange logic to Thread/Runnable and start it from Service. You can exchange data between Service and Activity/Activities with BroadcastReceivers or Messenger. I also recommend you to use Bluetooth lib:
implementation 'me.aflak.libraries:bluetooth:1.3.4' this one already have inside thread so it is become easy to embed in your service.
Example code of service which use this lib and Messenger:
private ArrayList<Messenger> mClients = new ArrayList<>();
final private Messenger inComingMessenger = new Messenger(mIncomingHandler);
#SuppressLint("HandlerLeak")
final Handler mIncomingHandler = new Handler() {
#Override
public void handleMessage(Message msg) {
switch (msg.what) {
case Constants.MSG_REGISTER_CLIENT:
mClients.add(msg.replyTo);
Log.d(TAG, "handleMessage: new client connected. Total: " + mClients.size());
break;
case Constants.MSG_UNREGISTER_CLIENT:
mClients.remove(msg.replyTo);
Log.d(TAG, "handleMessage: client disconnected. Total: " + mClients.size());
break;
case Constants.MSG_YOUR_MESSAGE_TYPE:
String val = (String) msg.obj;
// stuff to do
break;
}
}
};
/**
* Send message to connected activities
*/
public void sendMessageToClients(int msgSignal, Object obj) {
if (mClients.size() == 0)
return;
sendMessage(mClients.get(0), Message.obtain(null, msgSignal, obj));
for (int i = 1; i < mClients.size(); i++) {
if (mClients.get(i) == null)
continue;
sendMessage(mClients.get(i), Message.obtain(null, msgSignal, obj));
}
}
/**
* Send message to binded activity
*/
private void sendMessage(Messenger msgr, Message msg) {
try {
msgr.send((msg));
} catch (RemoteException e) {
Log.e(TAG, "can't send message", e);
e.printStackTrace();
}
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
super.onStartCommand(intent, flags, startId);
Log.d(TAG, "onStartCommand");
return START_STICKY;
}
#Nullable
#Override
public IBinder onBind(Intent intent) {
Log.d(TAG, "onBind");
return inComingMessenger.getBinder();
}
#Override
public void onCreate() {
super.onCreate();
bleDevices = new ArrayList<>();
if(bluetooth == null) {
bluetooth = new Bluetooth(this);
bluetooth.setBluetoothCallback(new BluetoothCallback() {
#Override
public void onBluetoothTurningOn() {}
#Override
public void onBluetoothOn() {}
#Override
public void onBluetoothTurningOff() {
bluetooth = null;
}
#Override
public void onBluetoothOff() { }
#Override
public void onUserDeniedActivation() {
// when using bluetooth.showEnableDialog()
// you will also have to call bluetooth.onActivityResult()
}
});
bluetooth.setDiscoveryCallback(new DiscoveryCallback() {
#Override public void onDiscoveryStarted() {
}
#Override public void onDiscoveryFinished() {
bleDevices.clear();
}
#Override public void onDeviceFound(BluetoothDevice device) {
if(bleDevices.indexOf(device)<0) {
bleDevices.add(device);
Log.d(TAG, "Found new device while scanning: "+device.getAddress());
sendMessageToClients(Constants.MSG_BLE_DEVICE_FOUND, device);
}
}
#Override public void onDevicePaired(BluetoothDevice device) {}
#Override public void onDeviceUnpaired(BluetoothDevice device) {}
#Override public void onError(String message) {
Log.e(TAG, "DiscoveryCallback onError "+message);
}
});
bluetooth.setDeviceCallback(new DeviceCallback() {
#Override public void onDeviceConnected(BluetoothDevice device) { }
#Override public void onDeviceDisconnected(BluetoothDevice device, String message) { }
#Override public void onMessage(String message) {
// Handle your message
yourHandleFunction(message.replaceAll(" ",""));
Log.d(TAG, message);
}
#Override public void onError(String message) {
Log.e(TAG, "DeviceCallback onError "+message);
}
#Override public void onConnectError(BluetoothDevice device, String message) { }
});
bluetooth.onStart();
}
connectToSavedDevice();
}
}
private void connectToSavedDevice() {
Log.d(TAG, "connectToSavedDevice state="+getState());
if(getState() != STATE_DISCONNECTED) return;
SharedPreferences pref = getSharedPreferences(App.TAG, 0);
String address = pref.getString(Constants.PREF_AUTO_CONNECT_TO_ADDRESS, null);
if(address == null) {
Log.d(TAG, "saved address==null start scan for devices");
scanDevices();
return;
}
BluetoothDevice device = bluetoothAdapter.getRemoteDevice(address);
if(device!=null) {
Log.d(TAG, "device found try to connect/bound, connect to Arduino");
bluetooth.connectToAddress(address,false);
}
}
In activity implement ServiceConnection interface:
protected synchronized void unbindService() {
if (!isBound()) {
return;
}
// lock object (prevents access to service while disconnecting)
synchronized (outComingMessenger) {
sendMessageToService(Message.obtain(null, Constants.MSG_UNREGISTER_CLIENT));
unbindService(this);
outComingMessenger = null;
}
}
protected void bindService() {
bindService(mServiceIntent, this, BIND_AUTO_CREATE);
}
#Override
public void onServiceConnected(ComponentName name, IBinder service) {
outComingMessenger = new Messenger(service);
final Message msg = Message.obtain(null, Constants.MSG_REGISTER_CLIENT);
msg.replyTo = inComingMessenger;
msg.obj = getClass().getSimpleName();
sendMessageToService(msg);
sendMessageToService(Constants.MSG_CHECK_IS_CONNECTION_READY);
}
#Override
public void onServiceDisconnected(ComponentName name) {
outComingMessenger = null;
bindService();
}
/**
* Send message to service
*/
protected void sendMessageToService(Message msg) {
if (!isBound()) {
return;
}
try {
msg.replyTo = inComingMessenger;
outComingMessenger.send(msg);
} catch (RemoteException e) {
}
}
/**
* Send simple message to connected service
* #param messageId
*/
protected void sendMessageToService(int messageId) {
sendMessageToService(Message.obtain(null, messageId));
}
/**
* Send simple message to connected service
* #param messageId
*/
protected void sendMessageToService(int messageId, Object obj) {
sendMessageToService(Message.obtain(null, messageId, obj));
}
/**
* Service is connected?
*/
protected final boolean isBound() {
return outComingMessenger != null;
}
#SuppressLint("HandlerLeak")
private final Handler mIncomingHandler = new Handler() {
public void handleMessage(Message msg) {
switch (msg.what) {
case Constants.MSG_YOUR_MESSAGE:
int res = (int) msg.obj;
break;
case Constants.MSG_CONNECTION_READY:
isReady = (boolean) msg.obj;
if(isReady) {
// show toast or what you want to do with the UI
} else {
// do something else
}
break;
case Constants.MSG_BLE_DEVICE_FOUND:
BluetoothDevice device = (BluetoothDevice)msg.obj;
SharedPreferences pref = getSharedPreferences(App.TAG, 0);
String deviceAddress = pref.getString(Constants.PREF_AUTO_CONNECT_TO_ADDRESS, null);
break;
}
}
};
final private Messenger inComingMessenger = new Messenger(mIncomingHandler);

BLE connected with Lollipop but not connected with Nougat

I'm new in android develop and I'm developing an app that transmit/receive data to a BLE module via Uart service.
With smartphone android 5.x.x the app works fine, it connects with the hardware and receive/transmit data.
With smartphone android 7.x.x the app doesn't connects.
Below you can see a snippet of MainActivity.java:
private final BroadcastReceiver UARTStatusChangeReceiver = new BroadcastReceiver() {
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
final Intent mIntent = intent;
//*********************//
if (action.equals(UartService.ACTION_GATT_CONNECTED)) {
runOnUiThread(new Runnable() {
public void run() {
Log.d(TAG, "HW_CONNECT_MSG");
DisconnectButton.setEnabled(true);
DeviceInfo.setText("Device Information:");
DeviceName.setText(mDevice.getName() + " - Connected");
mState = UART_PROFILE_CONNECTED;
isConnected = true;
if(isConnected) {
//Serial protocol to send command on MCU
Connectcmd[0] = (byte) STX;
Connectcmd[1] = (byte) 0x02;
Connectcmd[2] = (byte) 0x43; // 'C';
Connectcmd[3] = (byte) 0x54; // 'T'
Connectcmd[4] = (byte) ETX;
try {
//send data to UART service
SendData(Connectcmd);
sleep(500); // wait 500ms to send data
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
new Handler().postDelayed(mUpdateTimeTask, 2000);
}
else
{
isConnected = false;
}
}
});
}
It's seem that when SendData, the GATT operation is not yet finished. Smartphone show the message "Device doesn't support UART over BLE. Disconnecting..." due to action.equals(UartService.DEVICE_DOES_NOT_SUPPORT_BLE_UART).
If I delete the if(isConnected)...else... statement also smartphone with android 7.x.x will connects.
My question is what's happen and how can I resolve this issue?
My goal is to send a command to hardware via BLE so when the mcu is connected, a buzzer make a sound.
Thanks for help….
EDIT
Below you can find the whole MainActivity:
public class MainActivity extends Activity implements RadioGroup.OnCheckedChangeListener {
public static final String TAG = "DEBUG ";
public static final String DEV_NAME_FILTER = "";
private static final int REQUEST_SELECT_DEVICE = 1;
private static final int REQUEST_ENABLE_BT = 2;
private static final int UART_PROFILE_READY = 10;
private static final int UART_PROFILE_CONNECTED = 20;
public static final int UART_PROFILE_DISCONNECTED = 21;
private static final int STATE_OFF = 10;
private static final int PERMISSION_REQUEST_COARSE_LOCATION = 1;
TextView mRemoteRssiVal;
RadioGroup mRg;
private int mState = UART_PROFILE_DISCONNECTED;
private static UartService mService = null;
private static BluetoothDevice mDevice = null;
private BluetoothAdapter mBtAdapter = null;
private ListView messageListView;
private ArrayAdapter<String> listAdapter;
private Button SelectButton, DisconnectButton;
private EditText edtMessage;
private static Context context;
/**
* ATTENTION: This was auto-generated to implement the App Indexing API.
* See https://g.co/AppIndexing/AndroidStudio for more information.
*/
private GoogleApiClient client;
private static TextView DeviceInfo;
private static TextView DeviceName;
private static TextView Manufacturer;
public static boolean isConnected;
public static boolean isSetting;
public static boolean isReading;
public static boolean isManual;
public static boolean isFunctional;
public static boolean isBootloader;
public static byte[] SettingValues;
public static byte[] ReadingValues;
public static byte[] ManualValues;
public static byte[] FunctionalValues;
private static byte[] Connectcmd = new byte[5];
public static int STX = 0x3E; // '>'
public static int ETX = 0x23; // '#'
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
DeviceInfo = (TextView) findViewById(R.id.deviceInfo);
DeviceName = (TextView) findViewById(R.id.deviceName);
Manufacturer= (TextView) findViewById(R.id.manufacturer);
isConnected = false;
isSetting = false;
isReading = false;
isManual = false;
isFunctional = false;
isBootloader = false;
context = this;
//Enable location
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
// Android M Permission check
if (this.checkSelfPermission(Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
final AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("This app needs location access");
builder.setMessage("Please grant location access so this app can detect beacons.");
builder.setPositiveButton(android.R.string.ok, null);
builder.setOnDismissListener(new DialogInterface.OnDismissListener() {
#Override
#TargetApi(Build.VERSION_CODES.M)
public void onDismiss(DialogInterface dialog) {
requestPermissions(new String[]{Manifest.permission.ACCESS_COARSE_LOCATION}, PERMISSION_REQUEST_COARSE_LOCATION);
}
});
builder.show();
}
}
mBtAdapter = BluetoothAdapter.getDefaultAdapter();
if (mBtAdapter == null) {
Toast.makeText(this, "Bluetooth is not available", Toast.LENGTH_LONG).show();
finish();
return;
}
SelectButton = (Button) findViewById(R.id.button);
DisconnectButton = (Button) findViewById(R.id.disconnect);
DisconnectButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
//Serial protocol to send command on MCU
Connectcmd[0] = (byte) STX;
Connectcmd[1] = (byte) 0x02;
Connectcmd[2] = (byte) 0x44; // 'D';
Connectcmd[3] = (byte) 0x43; // 'C'
Connectcmd[4] = (byte) ETX;
try {
//send data to Banner service
SendData(Connectcmd);
sleep(500); // Wait 500ms to send data
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
MainActivity.disconnected();
setContentView(R.layout.activity_main);
finish();
} catch (Exception e) {
Log.e(TAG, "Disconnect error");
}
}
});
// Handle Select device button
SelectButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (!mBtAdapter.isEnabled()) {
Log.i(TAG, "onClick - BT not enabled yet");
Intent enableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableIntent, REQUEST_ENABLE_BT);
} else {
if (SelectButton.getText().equals("SELECT CELU")) {
//Connect button pressed, open DeviceListActivity class, with popup windows that scan for devices
Log.i(TAG, "Push button CONNECT");
Intent newIntent = new Intent(context, DeviceListActivity.class);
((Activity) context).startActivityForResult(newIntent, MainActivity.REQUEST_SELECT_DEVICE);
} else {
//Disconnect button pressed
disconnected();
}
}
}
});
// Set initial UI state
// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
client = new GoogleApiClient.Builder(this).addApi(AppIndex.API).build();
}
//UART service connected/disconnected
private ServiceConnection mServiceConnection = new ServiceConnection() {
public void onServiceConnected(ComponentName className, IBinder rawBinder) {
mService = ((UartService.LocalBinder) rawBinder).getService();
Log.d(TAG, "onServiceConnected mService= " + mService);
if (!mService.initialize()) {
Log.e(TAG, "Unable to initialize Bluetooth");
finish();
}
}
public void onServiceDisconnected(ComponentName classname) {
//// mService.disconnect(mDevice);
mService = null;
}
};
private Handler mHandler = new Handler() {
#Override
//Handler events that received from UART service
public void handleMessage(Message msg) {
}
};
private final BroadcastReceiver UARTStatusChangeReceiver = new BroadcastReceiver() {
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
final Intent mIntent = intent;
//*********************//
if (action.equals(UartService.ACTION_GATT_CONNECTED)) {
runOnUiThread(new Runnable() {
public void run() {
String currentDateTimeString = DateFormat.getTimeInstance().format(new Date());
Log.d(TAG, "CELU_CONNECT_MSG");
//btnConnectDisconnect.setText("Disconnect");
//edtMessage.setEnabled(true);
DisconnectButton.setEnabled(true);
DeviceInfo.setText("Device Information:");
DeviceName.setText(mDevice.getName() + " - Connected");
mState = UART_PROFILE_CONNECTED;
isConnected = true;
//IF COMMENTED THE APP CONNECTS!!!!!!!!!!!!!!!!!!
//ELSE IF NOT COMMENTED THE APP NEVER CONNECTS
/*if(isConnected) {
//Serial protocol to send command on MCU
Connectcmd[0] = (byte) STX;
Connectcmd[1] = (byte) 0x02;
Connectcmd[2] = (byte) 0x43; // 'C';
Connectcmd[3] = (byte) 0x54; // 'T'
Connectcmd[4] = (byte) ETX;
try {
//send data to UART service
SendData(Connectcmd);
sleep(500); // Wait 500ms to send data
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
new Handler().postDelayed(mUpdateTimeTask, 2000);
}
else
{
isConnected = false;
}*/
new Handler().postDelayed(mUpdateTimeTask, 2000);
}
});
}
//*********************//
if (action.equals(UartService.ACTION_GATT_DISCONNECTED)) {
runOnUiThread(new Runnable() {
public void run() {
Log.d(TAG, "HW_DISCONNECT_MSG");
DisconnectButton.setEnabled(false);
DeviceName.setText("Not Connected");
mState = UART_PROFILE_DISCONNECTED;
mService.close();
//setUiState();
}
});
}
//Enable notifivcation on UART service//
if (action.equals(UartService.ACTION_GATT_SERVICES_DISCOVERED)) {
mService.enableTXNotification();
}
//*********************//
if (action.equals(UartService.ACTION_DATA_AVAILABLE)) {
final byte[] txValue = intent.getByteArrayExtra(UartService.EXTRA_DATA);
try {
ParsingPacket(txValue);
} catch (Exception e) {
Log.e(TAG, e.toString());
}
}
//*********************//
if (action.equals(UartService.DEVICE_DOES_NOT_SUPPORT_BLE_UART)) {
showMessage("Device doesn't support UART over BLE Celu . Disconnecting");
mService.disconnect();
}
}
};
private static void ParsingPacket(byte[] packet) throws Exception {
if (packet.length == 0) {
// received empty packet
isConnected = false;
isSetting = false;
isReading = false;
isManual = false;
isFunctional = false;
isBootloader = false;
}
if(isSetting){
isSetting = false;
SettingValues = packet.clone();
String text = new String(SettingValues, "UTF-8");
Log.d(TAG, text);
}
if(isReading){
ReadingValues= packet;
ReadActivity.updateMeasure(ReadingValues);
//ReadActivity.addData(packet);
//String text = new String(ReadingValues, "UTF-8");
Log.d("Length ", String.format("%02d", (int) ReadingValues.length));
for(int i=0; i<ReadingValues.length; i++) {
String text = String.format("%02x", (int) ReadingValues[i]);
Log.d(TAG, text);
}
}
if(isManual){
isManual = false;
ManualValues = packet.clone();
String text = new String(ManualValues, "UTF-8");
Log.d(TAG, text);
}
if(isFunctional){
isFunctional = false;
FunctionalValues = packet.clone();
String text = new String(FunctionalValues, "UTF-8");
Log.d(TAG, text);
}
if(isBootloader){
isBootloader = false;
// do samething
}
}
private Runnable mUpdateTimeTask = new Runnable() {
public void run() {
if(DeviceName.getText()!="Not Connected") {
Intent connectedIntent = new Intent(getApplicationContext(), MenuActivity.class); //new Intent("com.antertech.mybleapplication.MenuActivity");
startActivity(connectedIntent);
}
}
};
private void service_init() {
Intent bindIntent = new Intent(this, UartService.class);
bindService(bindIntent, mServiceConnection, Context.BIND_AUTO_CREATE);
LocalBroadcastManager.getInstance(this).registerReceiver(UARTStatusChangeReceiver, makeGattUpdateIntentFilter());
}
private static IntentFilter makeGattUpdateIntentFilter() {
final IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(UartService.ACTION_GATT_CONNECTED);
intentFilter.addAction(UartService.ACTION_GATT_DISCONNECTED);
intentFilter.addAction(UartService.ACTION_GATT_SERVICES_DISCOVERED);
intentFilter.addAction(UartService.ACTION_DATA_AVAILABLE);
intentFilter.addAction(UartService.DEVICE_DOES_NOT_SUPPORT_BLE_UART);
return intentFilter;
}
#Override
public void onStart() {
super.onStart();// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
client.connect();
// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
AppIndex.AppIndexApi.start(client, getIndexApiAction());
}
#Override
public void onDestroy() {
super.onDestroy();
Log.d(TAG, "onDestroy()");
try {
LocalBroadcastManager.getInstance(this).unregisterReceiver(UARTStatusChangeReceiver);
} catch (Exception ignore) {
Log.e(TAG, ignore.toString());
}
unbindService(mServiceConnection);
mService.stopSelf();
mService = null;
}
#Override
protected void onStop() {
Log.d(TAG, "onStop");
super.onStop();// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
AppIndex.AppIndexApi.end(client, getIndexApiAction());
// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
client.disconnect();
}
#Override
protected void onPause() {
Log.d(TAG, "onPause");
super.onPause();
}
#Override
protected void onRestart() {
super.onRestart();
Log.d(TAG, "onRestart");
}
#Override
public void onResume() {
super.onResume();
Log.d(TAG, "onResume");
if (!mBtAdapter.isEnabled()) {
Log.i(TAG, "onResume - BT not enabled yet");
Intent enableIntent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableIntent, REQUEST_ENABLE_BT);
}
}
#Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
}
#Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
switch (requestCode) {
case REQUEST_SELECT_DEVICE:
//When the DeviceListActivity return, with the selected device address
if (resultCode == Activity.RESULT_OK && data != null) {
String deviceAddress = data.getStringExtra(BluetoothDevice.EXTRA_DEVICE);
mDevice = BluetoothAdapter.getDefaultAdapter().getRemoteDevice(deviceAddress);
Log.d(TAG, "... onActivityResultdevice.address==" + mDevice + " mserviceValue " + mService);
mService.connect(deviceAddress);
//setContentView(R.layout.activity_setting);
((TextView) findViewById(R.id.deviceName)).setText(mDevice.getName() + " - Connecting...");
}
break;
case REQUEST_ENABLE_BT:
// When the request to enable Bluetooth returns
if (resultCode == Activity.RESULT_OK) {
Toast.makeText(this, "Bluetooth has turned on ", Toast.LENGTH_SHORT).show();
} else {
// User did not enable Bluetooth or an error occurred
Log.d(TAG, "BT not enabled");
Toast.makeText(this, "Problem in BT Turning ON ", Toast.LENGTH_SHORT).show();
finish();
}
break;
default:
Log.e(TAG, "wrong request code");
break;
}
}
#Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
}
public static void SendData(byte[] text) {
mService.writeRXCharacteristic(text);
Log.i(TAG, "Message send to Target");
}
public static void disconnected() {
if (mDevice != null) {
mService.disconnect();
Log.i(TAG, "Push Button DISCONNECT");
}
}
private void showMessage(String msg) {
Toast.makeText(this, msg, Toast.LENGTH_SHORT).show();
}
#Override
public void onBackPressed() {
if (mState == UART_PROFILE_CONNECTED) {
Intent startMain = new Intent(Intent.ACTION_MAIN);
startMain.addCategory(Intent.CATEGORY_HOME);
startMain.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(startMain);
showMessage("CELU TPE running in background.\n Disconnect to exit");
} else {
new AlertDialog.Builder(this)
.setIcon(android.R.drawable.ic_dialog_alert)
.setTitle(R.string.popup_title)
.setMessage(R.string.popup_message)
.setPositiveButton(R.string.popup_yes, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
finish();
}
})
.setNegativeButton(R.string.popup_no, null)
.show();
}
}
#Override
public void onRequestPermissionsResult(int requestCode,
String permissions[],
int[] grantResults) {
switch (requestCode) {
case PERMISSION_REQUEST_COARSE_LOCATION: {
if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
Log.d(TAG, "coarse location permission granted");
} else {
final AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Functionality limited");
builder.setMessage("Since location access has not been granted, this app will not be able to discover beacons when in the background.");
builder.setPositiveButton(android.R.string.ok, null);
builder.setOnDismissListener(new DialogInterface.OnDismissListener() {
#Override
public void onDismiss(DialogInterface dialog) {
}
});
builder.show();
}
return;
}
}
}
/**
* ATTENTION: This was auto-generated to implement the App Indexing API.
* See https://g.co/AppIndexing/AndroidStudio for more information.
*/
public Action getIndexApiAction() {
Thing object = new Thing.Builder()
.setName("Main Page") // TODO: Define a title for the content shown.
// TODO: Make sure this auto-generated URL is correct.
.setUrl(Uri.parse("http://[ENTER-YOUR-URL-HERE]"))
.build();
return new Action.Builder(Action.TYPE_VIEW)
.setObject(object)
.setActionStatus(Action.STATUS_TYPE_COMPLETED)
.build();
}
}

Socket closing during lifecycle changes

I'm trying to keep a socket open during lifecycle changes in a headless fragment with setRetainInstance(true); in onCreate. However, when my app comes back the following exception occurs.
E/Client: Receiving thread loop error
java.net.SocketException: Socket closed
at libcore.io.Posix.recvfromBytes(Native Method)
at libcore.io.Posix.recvfrom(Posix.java:189)
at libcore.io.BlockGuardOs.recvfrom(BlockGuardOs.java:250)
at libcore.io.IoBridge.recvfrom(IoBridge.java:549)
at java.net.PlainSocketImpl.read(PlainSocketImpl.java:481)
at java.net.PlainSocketImpl.access$000(PlainSocketImpl.java:37)
at java.net.PlainSocketImpl$PlainSocketInputStream.read(PlainSocketImpl.java:237)
at java.io.InputStreamReader.read(InputStreamReader.java:233)
at java.io.BufferedReader.fillBuf(BufferedReader.java:145)
at java.io.BufferedReader.readLine(BufferedReader.java:397)
at com.gm.popper_6.ConnectionFragment$Client$ReceivingThread.run(ConnectionFragment.java:183)
at java.lang.Thread.run(Thread.java:818)
Here's the code for the fragment
public class ConnectionFragment extends Fragment {
private InetAddress mGoAddress;
private int mGoPort;
private Client mClient;
private static final String TAG = "Connection";
private Server mServer;
private Socket mSocket;
private ConnectionFragmentListener listener;
private String mMessage;
public static ConnectionFragment newInstance(InetAddress address, int port){
Bundle bundle = new Bundle();
bundle.putSerializable("GoAddress", address);
bundle.putInt("GoPort", port);
ConnectionFragment fragment = new ConnectionFragment();
fragment.setArguments(bundle);
return fragment;
}
public interface ConnectionFragmentListener{
void onMessageRcvd(String message);
}
public void setConnectionFragmentListener(ConnectionFragmentListener listener){
this.listener = listener;
}
private void readBundle(Bundle bundle){
if (bundle != null){
mGoAddress = (InetAddress)bundle.getSerializable("GoAddress");
mGoPort = bundle.getInt("GoPort");
}
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setRetainInstance(true);
readBundle(getArguments());
mGoAddress = (InetAddress) getArguments().getSerializable("GoAddress");
mGoPort = getArguments().getInt("GoPort");
mServer = new Server();
}
#Override
public void onStart() {
super.onStart();
}
// THE SERVER CLASS
private class Server{ //DECLARATION
ServerSocket mServerSocket = null;
Thread mThread = null;
public Server(){ //CONSTRUCTOR
mThread = new Thread(new ServerThread());
mThread.start();
}
public void tearDown(){
mThread.interrupt();
try {
mServerSocket.close();
} catch (IOException e) {
e.printStackTrace();
Log.e(TAG, "Error closing server socket");
}
}
class ServerThread implements Runnable{
#Override
public void run() {
//REMOVE OR COMMENT OUT FOR FINAL
//android.os.Debug.waitForDebugger();
try {
mServerSocket = new ServerSocket(mGoPort, 50, mGoAddress);
} catch (IOException e) {
e.printStackTrace();
}
while (!Thread.currentThread().isInterrupted()){
try {
mSocket = mServerSocket.accept();
Log.d(TAG, "Connected");
if (mClient == null){
mClient = new Client();
}
} catch (IOException e) {
e.printStackTrace();
return;
}
}
}
}
}
//THE CLIENT CLASS
private class Client { //DECLARATION
private final String CLIENT_TAG = "Client";
private Thread mSendThread;
private Thread mRecThread;
public Client() { //CONSTRUCTOR
Log.d(CLIENT_TAG, "Creating Client");
mSendThread = new Thread(new SendingThread());
mSendThread.start();
}
class SendingThread implements Runnable { //an inner class of Client
BlockingQueue<String> mMessageQueue;
private int QUEUE_CAPACITY = 10;
public SendingThread() {
mMessageQueue = new ArrayBlockingQueue<String>(QUEUE_CAPACITY);
}
#Override
public void run() {
mRecThread = new Thread(new ReceivingThread());
mRecThread.start();
while (true){
try {
String msg = mMessageQueue.take();
sendMessage(msg);
} catch (InterruptedException e) {
Log.d(CLIENT_TAG, "Sending loop interrupted, exiting");
}
}
}
} //closes SendingThread, an inner class of Client
class ReceivingThread implements Runnable{ //an inner class of Client
#Override
public void run() {
BufferedReader input;
try {
//android.os.Debug.waitForDebugger();
input = new BufferedReader(new InputStreamReader(mSocket.getInputStream()));
while (!Thread.currentThread().isInterrupted()){
String messageStr = null;
messageStr = input.readLine(); //Line 183
if (messageStr!= null){
Log.d(CLIENT_TAG, "Read from the stream: " + messageStr);
mMessage = messageStr;
updateMessages(false);
}
else{
Log.d(CLIENT_TAG, "The null!!!");
}
}
input.close();
} catch (IOException e) {
Log.e(CLIENT_TAG, "Receiving thread loop error", e);
e.printStackTrace();
}
} //closes run method
} //closes ReceivingThread, an inner class of Client
public void tearDown(){ //a method of Client
try {
getSocket().close();
} catch (IOException e) {
e.printStackTrace();
}
}
public void sendMessage(String msg){ //a method of Client
try {
Socket socket = getSocket(); //should return mSocket
if (socket == null) {
Log.d(CLIENT_TAG, "Socket is null");
} else if (socket.getOutputStream() == null) {
Log.d(CLIENT_TAG, "Socket output stream in null");
}
PrintWriter out = new PrintWriter(new BufferedWriter(
new OutputStreamWriter(getSocket().getOutputStream())), true);
out.println(msg);
out.flush();
mMessage = msg;
updateMessages(true);
} catch (UnknownHostException e){
Log.d(CLIENT_TAG, "Unkown host", e);
} catch (IOException e) {
Log.d(CLIENT_TAG, "I/O exception", e);
} catch (Exception e){
Log.d(CLIENT_TAG, "Error 3", e);
}
Log.d(CLIENT_TAG, "Message sent: " + msg);
} //closes sendMessage, a method of the inner Client class
} //closes Client class, an inner class of Connection
private Socket getSocket() {
return mSocket;
}
public synchronized void updateMessages(boolean local){
Log.i(TAG, "Updating message: " + mMessage);
if (local){
mMessage = "me: " + mMessage;
}
else{
mMessage = "them: " + mMessage;
}
if (listener!= null){
listener.onMessageRcvd(mMessage);
}
} //closes updateMessages
public void sendMessage(String msg){ //CALL FROM MAIN ACTIVITY
if(mClient != null){ //TO SEND A STRING MESSAGE
mClient.sendMessage(msg);
}
}
public void tearDown(){
mServer.tearDown();
mClient.tearDown();
}
#Override
public void onDestroy() {
tearDown();
super.onDestroy();
}
} //closes class declaration
And here's the main activity
public class MainActivity extends Activity implements ChannelListener, DeviceActionListener,
ConnectionInfoListener, ConnectionFragment.ConnectionFragmentListener{
//CLASS DECLARATIONS
public static final String TAG = "Popper";
private WifiP2pManager manager;
private Boolean isWifiP2pEnabled = false;
ArrayList<Target> mTargets = new ArrayList<Target>(0);
Target mTarget;
TextView rcvd;
TextView ip;
EditText mssg;
String goAddress = "";
InetAddress goInetAddress;
int prefixedPort;
//declare and initialize an intent filter
private final IntentFilter intentFilter = new IntentFilter();
//private final IntentFilter serverFilter = new IntentFilter();
private Channel channel;
private BroadcastReceiver receiver = null;
private ConnectionInfoListener infoListener;
private Intent serverServiceIntent;
ConnectionFragment mConnection;
//????
public void setIsWifiP2pEnabled(boolean isWifiP2pEnabled) {
this.isWifiP2pEnabled = isWifiP2pEnabled;
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//register app w/p2p framework with call to initialize
//channel is my apps connection to the p2p framework
manager = (WifiP2pManager) getSystemService(Context.WIFI_P2P_SERVICE);
channel = manager.initialize(this, getMainLooper(), null);
receiver = new P2pReceiver(manager, channel, this);
rcvd = (TextView)findViewById(R.id.rcvd);
rcvd.setMovementMethod(new ScrollingMovementMethod());
//initialize filter and setup to listen for the following broadcast intents
intentFilter.addAction(WifiP2pManager.WIFI_P2P_STATE_CHANGED_ACTION);
intentFilter.addAction(WifiP2pManager.WIFI_P2P_PEERS_CHANGED_ACTION);
intentFilter.addAction(WifiP2pManager.WIFI_P2P_CONNECTION_CHANGED_ACTION);
intentFilter.addAction(WifiP2pManager.WIFI_P2P_THIS_DEVICE_CHANGED_ACTION);
Resources res = getResources();
prefixedPort = res.getInteger(R.integer.GOport);
}
#Override
public void onMessageRcvd(String message) {
addLine(message);
}
#Override
protected void onResume() {
super.onResume();
receiver = new P2pReceiver(manager, channel, this);
registerReceiver(receiver, intentFilter);
}
#Override
protected void onPause() {
super.onPause();
unregisterReceiver(receiver);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.action_items, menu);
return super.onCreateOptionsMenu(menu);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.atn_direct_discover:
if (!isWifiP2pEnabled) {
NotificationToast.showToast(MainActivity.this, "Enable P2P!!!");
return true;
}
final TargetListFragment fragment = (TargetListFragment) getFragmentManager()
.findFragmentById(R.id.frag_list);
fragment.onInitiateDiscovery();
manager.discoverPeers(channel, new WifiP2pManager.ActionListener() {
#Override
public void onSuccess() {
NotificationToast.showToast(MainActivity.this, "Discovery initiated");
}
#Override
public void onFailure(int reason) {
NotificationToast.showToast(MainActivity.this, "Discovery failed");
}
});
return true;
default:
return super.onOptionsItemSelected(item);
}
}
#Override //this is associated with ChannelListener
public void onChannelDisconnected() { //removal causes error.
}
#Override
public void onConnectionInfoAvailable(WifiP2pInfo info) {
goAddress = info.groupOwnerAddress.getHostAddress(); //this returns a string rep of add.
goInetAddress = info.groupOwnerAddress; //this returns actual inet add.
ip = (TextView) findViewById(R.id.ip);
mssg = (EditText) findViewById(R.id.mssg);
ip.setText(goAddress + ":" + "8080"); //display GO address and IP
startConnectionFragment();
}
//this override method is triggered by TargetListFragment's DeviceActionListener
#Override
public void connect(WifiP2pConfig config) {
manager.connect(channel, config, new ActionListener() {
#Override
public void onSuccess() {
//maybe use this to gray out and disable the listview object that connected
}
#Override
public void onFailure(int reason) {
}
});}
public void startConnectionFragment(){
mConnection = ConnectionFragment.newInstance(goInetAddress, prefixedPort);
FragmentTransaction ft = getFragmentManager().beginTransaction();
ft.add(mConnection, "TAG_1");
ft.commit();
mConnection.setConnectionFragmentListener(this);
}
public void addLine(String line){
final String msg = line;
runOnUiThread(new Runnable(){
#Override
public void run() {
rcvd.append("\n" + msg);
}
});
}
#Override
public void onTargetListClick(Target target) {
mTarget = target;
}
public void stopServer() {
if(serverServiceIntent != null)
{
stopService(serverServiceIntent);
}
}
#Override
protected void onDestroy() {
super.onDestroy();
if (mConnection != null){
//mConnection.tearDown();
}
stopServer();
}
public void SendMessage(View v){
EditText txt = (EditText) this.findViewById(R.id.mssg);
String str = txt.getText().toString();
mConnection.sendMessage(str);
txt.getText().clear();
}
}
Could this have something to do with detaching when the app goes on pause or stop and not re-attaching when it comes back to life? Are there other things I should be considering?
Ultimately the app needs to keep communication open to about 5 or 6 devices over p2p. if there is a better strategy I'm open to suggestions. Thanks.
Update - So I've confirmed that both the onDestroy and onDetach methods of the fragment are firing when the main activity goes onStop. Since I have a method to close the sockets on death of the fragment they are getting closed. The big question now is how to keep the fragment alive?

You should maybe create a helper class that will open/close sockets on behalf of other classes, such as that fragment, that helper class won't be subjected to any life cycle events, and can be kept running as long as the Application process is alive

Getting incoming calls for an hour only using Twilio

I have implemented Twilio in my android app for outgoing and incoming calls. But I'm facing an issue while getting incoming call with the background service. The issue is that I get calls in first 30-40 mins only. After sometime phone stops getting incoming calls. I tried so much. Please respond me soon. I'm sharing code with you too.
I get token from a background service which generates token after a time period.
IncomingCallService.java
public class IncomingCallService extends Service implements LoginListener,
BasicConnectionListener, BasicDeviceListener, View.OnClickListener,
CompoundButton.OnCheckedChangeListener,
RadioGroup.OnCheckedChangeListener {
private static Handler handler, handler_login;
public IncomingPhone phone;
SharedPreferences login_details;
Vibrator vibrator;
Ringtone r;
Uri notification;
public static final String LOGIN_DETAILS = "XXXXXXXX";
AudioManager am;
Intent intent;
public static String DEFAULT_CLIENT_NAME = "developer";
static String Twilio_id = "",
INCOMING_AUTH_PHP_SCRIPT = MenuItems.INCOMING_AUTH_PHP_SCRIPT
+ MenuItems.Twilio_id;
Runnable newrun;
Activity context;
Context ctx;
static String op_id = "";
#Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
return null;
}
#Override
public void onCreate() {
login_details = getSharedPreferences(LOGIN_DETAILS,
Context.MODE_PRIVATE);
if (login_details.contains("twilio_Id")) {
Twilio_id = login_details.getString("twilio_Id", "");
}
handler_login = new Handler();
handler_login.postDelayed(new Runnable() {
#Override
public void run() {
Login();
handler_login.postDelayed(this, 20000);
}
}, 1000);
}
public void Login() {
phone = IncomingPhone.getInstance(getApplicationContext());
phone.setListeners(this, this, this);
phone.login(DEFAULT_CLIENT_NAME, true, true);
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
this.intent = intent;
// I know getIntent always return NULL in service
if (intent != null) {
op_id = intent.getStringExtra("operator_id");
onCallHandler();
}
return START_STICKY;
}
public void onCallHandler() {
handler = new Handler();
newrun = new Runnable() {
#Override
public void run() {
handler.removeCallbacks(newrun);
new IncomingTokenTask().execute();
if (phone.handleIncomingIntent(intent)) {
}
handler.postDelayed(this, 2000000);
}
};
handler.postDelayed(newrun, 8000000);
}
class IncomingTokenTask extends AsyncTask<Void, Void, Void> {
#Override
protected void onPreExecute() {
}
#Override
protected Void doInBackground(Void... params) {
IncomingPhone.capabilityToken = EntityUtils
.toString(entity);
}
}
The BasicPhone class of twilio
public class IncomingPhone implements DeviceListener, ConnectionListener {
private static final String TAG = "IncomingPhone";
static String decodedString = "";
static String capabilityToken = "";
// TODO: change this to point to the script on your public server
private static final String AUTH_PHP_SCRIPT = MenuItems.INCOMING_AUTH_PHP_SCRIPT+MenuItems.Twilio_id;
public interface LoginListener {
public void onLoginStarted();
public void onLoginFinished();
public void onLoginError(Exception error);
}
public interface BasicConnectionListener {
public void onIncomingConnectionDisconnected();
public void onConnectionConnecting();
public void onConnectionConnected();
public void onConnectionFailedConnecting(Exception error);
public void onConnectionDisconnecting();
public void onConnectionDisconnected();
public void onConnectionFailed(Exception error);
}
public interface BasicDeviceListener {
public void onDeviceStartedListening();
public void onDeviceStoppedListening(Exception error);
}
private static IncomingPhone instance;
public static final IncomingPhone getInstance(Context context) {
if (instance == null)
instance = new IncomingPhone(context);
return instance;
}
private final Context context;
private LoginListener loginListener;
private BasicConnectionListener basicConnectionListener;
private BasicDeviceListener basicDeviceListener;
private static boolean twilioSdkInited;
private static boolean twilioSdkInitInProgress;
private boolean queuedConnect;
private Device device;
private Connection pendingIncomingConnection;
private Connection connection;
private boolean speakerEnabled;
private String lastClientName;
private boolean lastAllowOutgoing;
private boolean lastAllowIncoming;
private IncomingPhone(Context context) {
this.context = context;
}
public void setListeners(LoginListener loginListener,
BasicConnectionListener basicConnectionListener,
BasicDeviceListener basicDeviceListener) {
this.loginListener = loginListener;
this.basicConnectionListener = basicConnectionListener;
this.basicDeviceListener = basicDeviceListener;
}
private void obtainCapabilityToken(String clientName,
boolean allowOutgoing, boolean allowIncoming) {
StringBuilder url = new StringBuilder();
HostnameVerifier hostnameVerifier = org.apache.http.conn.ssl.SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER;
DefaultHttpClient httpclient = new DefaultHttpClient();
SchemeRegistry registry = new SchemeRegistry();
SSLSocketFactory socketFactory = SSLSocketFactory.getSocketFactory();
socketFactory
.setHostnameVerifier((X509HostnameVerifier) hostnameVerifier);
registry.register(new Scheme("https", socketFactory, 443));
SingleClientConnManager mgr = new SingleClientConnManager(
httpclient.getParams(), registry);
#SuppressWarnings("unused")
DefaultHttpClient httpClient = new DefaultHttpClient(mgr,
httpclient.getParams());
// Set verifier
HttpsURLConnection.setDefaultHostnameVerifier(hostnameVerifier);
url.append(AUTH_PHP_SCRIPT);
// This runs asynchronously!
new GetAuthTokenAsyncTask().execute(url.toString());
}
private boolean isCapabilityTokenValid() {
if (device == null || device.getCapabilities() == null)
return false;
long expTime = (Long) device.getCapabilities().get(
Capability.EXPIRATION);
return expTime - System.currentTimeMillis() / 1000 > 0;
}
//
private void updateAudioRoute() {
AudioManager audioManager = (AudioManager) context
.getSystemService(Context.AUDIO_SERVICE);
audioManager.setSpeakerphoneOn(speakerEnabled);
}
public void login(final String clientName, final boolean allowOutgoing,
final boolean allowIncoming) {
if (loginListener != null)
loginListener.onLoginStarted();
this.lastClientName = clientName;
this.lastAllowOutgoing = allowOutgoing;
this.lastAllowIncoming = allowIncoming;
if (!twilioSdkInited) {
if (twilioSdkInitInProgress)
return;
twilioSdkInitInProgress = true;
Twilio.setLogLevel(Log.DEBUG);
Twilio.initialize(context, new Twilio.InitListener() {
#Override
public void onInitialized() {
twilioSdkInited = true;
twilioSdkInitInProgress = false;
obtainCapabilityToken(clientName, allowOutgoing,
allowIncoming);
}
#Override
public void onError(Exception error) {
twilioSdkInitInProgress = false;
if (loginListener != null)
loginListener.onLoginError(error);
}
});
} else {
obtainCapabilityToken(clientName, allowOutgoing, allowIncoming);
}
}
private void reallyLogin(final String capabilityToken) {
try {
if (device == null) {
device = Twilio.createDevice(capabilityToken, this);
Intent intent = new Intent(context, IncomingPhoneActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);
PendingIntent pendingIntent = PendingIntent.getActivity(
context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
device.setIncomingIntent(pendingIntent);
} else
device.updateCapabilityToken(capabilityToken);
if (loginListener != null)
loginListener.onLoginFinished();
if (queuedConnect) {
// If someone called connect() before we finished initializing
// the SDK, let's take care of that here.
connect(null);
queuedConnect = false;
}
} catch (Exception e) {
if (device != null)
device.release();
device = null;
if (loginListener != null)
loginListener.onLoginError(e);
}
}
public void setSpeakerEnabled(boolean speakerEnabled) {
if (speakerEnabled != this.speakerEnabled) {
this.speakerEnabled = speakerEnabled;
updateAudioRoute();
}
}
public void connect(Map<String, String> inParams) {
if (twilioSdkInitInProgress) {
// If someone calls connect() before the SDK is initialized, we'll
// remember
// that fact and try to connect later.
queuedConnect = true;
return;
}
if (!isCapabilityTokenValid())
login(lastClientName, lastAllowOutgoing, lastAllowIncoming);
if (device == null)
return;
if (canMakeOutgoing()) {
disconnect();
connection = device.connect(inParams, this);
if (connection == null && basicConnectionListener != null)
basicConnectionListener
.onConnectionFailedConnecting(new Exception(
"Couldn't create new connection"));
}
}
public void disconnect() {
IncomingPhoneActivity.incomingAlert = null;
if (connection != null) {
connection.disconnect(); // will null out in onDisconnected()
if (basicConnectionListener != null)
basicConnectionListener.onConnectionDisconnecting();
}
}
public void acceptConnection() {
if (pendingIncomingConnection != null) {
if (connection != null)
disconnect();
pendingIncomingConnection.accept();
connection = pendingIncomingConnection;
pendingIncomingConnection = null;
}
}
public void connecta(String phoneNumber) {
Toast.makeText(context, "Calling...", Toast.LENGTH_SHORT).show();
Map<String, String> parameters = new HashMap<String, String>();
parameters.put("group_id", "11");
// String capabilityToken;
try {
device = Twilio
.createDevice(decodedString, this /* DeviceListener */);
} catch (Exception e1) {
e1.printStackTrace();
}
try {
device.disconnectAll();
} catch (Exception e) {
e.printStackTrace();
}
connection = device.connect(parameters, this);
if (connection == null) {
Log.w(TAG, "Failed to create new connection");
}
}
public void ignoreIncomingConnection() {
if (pendingIncomingConnection != null) {
pendingIncomingConnection.ignore();
}
}
public boolean isConnected() {
return connection != null
&& connection.getState() == Connection.State.CONNECTED;
}
public Connection.State getConnectionState() {
return connection != null ? connection.getState()
: Connection.State.DISCONNECTED;
}
public boolean hasPendingConnection() {
return pendingIncomingConnection != null;
}
public boolean handleIncomingIntent(Intent intent) {
Device inDevice = intent.getParcelableExtra(Device.EXTRA_DEVICE);
Connection inConnection = intent
.getParcelableExtra(Device.EXTRA_CONNECTION);
if (inDevice == null && inConnection == null)
return false;
intent.removeExtra(Device.EXTRA_DEVICE);
intent.removeExtra(Device.EXTRA_CONNECTION);
if (pendingIncomingConnection != null) {
Log.i(TAG, "A pending connection already exists");
inConnection.ignore();
return false;
}
pendingIncomingConnection = inConnection;
pendingIncomingConnection.setConnectionListener(this);
return true;
}
public boolean canMakeOutgoing() {
if (device == null)
return false;
Map<Capability, Object> caps = device.getCapabilities();
return caps.containsKey(Capability.OUTGOING)
&& (Boolean) caps.get(Capability.OUTGOING);
}
public boolean canAcceptIncoming() {
if (device == null)
return false;
Map<Capability, Object> caps = device.getCapabilities();
return caps.containsKey(Capability.INCOMING)
&& (Boolean) caps.get(Capability.INCOMING);
}
public void setCallMuted(boolean isMuted) {
if (connection != null) {
connection.setMuted(isMuted);
}
}
#Override
/* DeviceListener */
public void onStartListening(Device inDevice) {
if (basicDeviceListener != null)
basicDeviceListener.onDeviceStartedListening();
}
#Override
/* DeviceListener */
public void onStopListening(Device inDevice) {
if (basicDeviceListener != null)
basicDeviceListener.onDeviceStoppedListening(null);
}
#Override
/* DeviceListener */
public void onStopListening(Device inDevice, int inErrorCode,
String inErrorMessage) {
if (basicDeviceListener != null)
basicDeviceListener.onDeviceStoppedListening(new Exception(
inErrorMessage));
}
#Override
/* DeviceListener */
public boolean receivePresenceEvents(Device inDevice) {
return false;
}
#Override
/* DeviceListener */
public void onPresenceChanged(Device inDevice, PresenceEvent inPresenceEvent) {
}
#Override
/* ConnectionListener */
public void onConnecting(Connection inConnection) {
if (basicConnectionListener != null)
basicConnectionListener.onConnectionConnecting();
}
#Override
/* ConnectionListener */
public void onConnected(Connection inConnection) {
updateAudioRoute();
if (basicConnectionListener != null)
basicConnectionListener.onConnectionConnected();
}
#Override
/* ConnectionListener */
public void onDisconnected(Connection inConnection) {
if (inConnection == connection) {
connection = null;
if (basicConnectionListener != null)
basicConnectionListener.onConnectionDisconnected();
} else if (inConnection == pendingIncomingConnection) {
pendingIncomingConnection = null;
if (basicConnectionListener != null)
basicConnectionListener.onIncomingConnectionDisconnected();
}
}
#Override
/* ConnectionListener */
public void onDisconnected(Connection inConnection, int inErrorCode,
String inErrorMessage) {
if (inConnection == connection) {
connection = null;
if (basicConnectionListener != null)
basicConnectionListener
.onConnectionFailedConnecting(new Exception(
inErrorMessage));
}
}
private class GetAuthTokenAsyncTask extends AsyncTask<String, Void, String> {
#Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
IncomingPhone.this.reallyLogin(result);
}
#Override
protected String doInBackground(String... params) {
try {
capabilityToken = HttpHelper.httpGet(params[0]);
decodedString = capabilityToken.replace("\"", "");
} catch (Exception e) {
e.printStackTrace();
}
return decodedString;
}
}
}
And the activity which opens after getting incoming call via Service class.
public class IncomingPhoneActivity extends Activity implements LoginListener,
BasicConnectionListener, BasicDeviceListener, View.OnClickListener,
CompoundButton.OnCheckedChangeListener,
RadioGroup.OnCheckedChangeListener {
private static final Handler handler = new Handler();
public IncomingPhone phone;
SharedPreferences login_details;
Vibrator vibrator;
private LinearLayout disconnect_btn;
private LinearLayout mainButton;
private ToggleButton speakerButton;
private ToggleButton muteButton;
private EditText logTextBox;
static AlertDialog incomingAlert;
private EditText outgoingTextBox;
private EditText clientNameTextBox;
private Button capabilitesButton;
private CheckBox incomingCheckBox, outgoingCheckBox;
Button call_btn, dis_call_btn, updateButton;
public static String AUTH_PHP_SCRIPT, rating1, rating2;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.call_screen);
Intent intent = getIntent();
Operator_id = intent.getStringExtra("operator_id");
gps = new GPSTracker(IncomingPhoneActivity.this);
if (gps.canGetLocation()) {
latitude = gps.getLatitude();
longitude = gps.getLongitude();
} else {
// gps.showSettingsAlert();
latitude = 0.00;
longitude = 0.00;
}
login_details = getSharedPreferences(LOGIN_DETAILS,
Context.MODE_PRIVATE);
if (login_details.contains("twilio_Id")) {
Twilio_id = login_details.getString("twilio_Id", "");
}
AUTH_PHP_SCRIPT = "http://xxxxxxxxxxxxxx/getGenToken?group_id="
+ Operator_id + "&twilio_id=" + Twilio_id + "&latitude="
+ latitude + "&longitude=" + longitude;
disconnect_btn = (LinearLayout) findViewById(R.id.d_call);
mainButton = (LinearLayout) findViewById(R.id.call);
call_btn = (Button) findViewById(R.id.call_btn);
dis_call_btn = (Button) findViewById(R.id.d_call_btn);
mainButton.setOnClickListener(this);
call_btn.setOnClickListener(this);
dis_call_btn.setOnClickListener(this);
disconnect_btn.setOnClickListener(this);
mainButton.setEnabled(false);
call_btn.setEnabled(false);
speakerButton = (ToggleButton) findViewById(R.id.speaker_btn);
speakerButton.setOnCheckedChangeListener(this);
muteButton = (ToggleButton) findViewById(R.id.mute_btn);
muteButton.setOnCheckedChangeListener(this);
logTextBox = (EditText) findViewById(R.id.log_text_box);
outgoingTextBox = (EditText) findViewById(R.id.outgoing_client);
clientNameTextBox = (EditText) findViewById(R.id.client_name);
clientNameTextBox.setText(DEFAULT_CLIENT_NAME);
capabilitesButton = (Button) findViewById(R.id.capabilites_button);
capabilitesButton.setOnClickListener(this);
outgoingCheckBox = (CheckBox) findViewById(R.id.outgoing);
incomingCheckBox = (CheckBox) findViewById(R.id.incoming);
vibrator = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
if (MenuItems.Speaker == true) {
speakerButton.setVisibility(View.VISIBLE);
} else {
speakerButton.setVisibility(View.INVISIBLE);
}
}
#Override
protected void onStart() {
// TODO Auto-generated method stub
super.onStart();
phone = IncomingPhone.getInstance(getApplicationContext());
phone.setListeners(this, this, this);
phone.login(DEFAULT_CLIENT_NAME, outgoingCheckBox.isChecked(),
incomingCheckBox.isChecked());
}
private void syncMainButton() {
handler.post(new Runnable() {
public void run() {
if (IncomingPhone.decodedString.length() != 0) {
if (phone.isConnected()) {
switch (phone.getConnectionState()) {
default:
mainButton.setClickable(true);
mainButton.setEnabled(true);
call_btn.setEnabled(true);
mainButton.setVisibility(View.VISIBLE);
disconnect_btn.setVisibility(View.GONE);
disconnect_btn.setClickable(false);
break;
case DISCONNECTED:
mainButton.setVisibility(View.VISIBLE);
disconnect_btn.setVisibility(View.GONE);
disconnect_btn.setClickable(false);
break;
case CONNECTED:
mainButton.setVisibility(View.GONE);
disconnect_btn.setVisibility(View.VISIBLE);
disconnect_btn.setClickable(true);
break;
case CONNECTING:
mainButton.setVisibility(View.GONE);
disconnect_btn.setVisibility(View.VISIBLE);
disconnect_btn.setClickable(true);
break;
}
} else if (phone.hasPendingConnection()) {
mainButton.setClickable(true);
mainButton.setEnabled(true);
call_btn.setEnabled(true);
mainButton.setVisibility(View.VISIBLE);
disconnect_btn.setVisibility(View.GONE);
disconnect_btn.setClickable(false);
} else {
mainButton.setVisibility(View.VISIBLE);
disconnect_btn.setVisibility(View.GONE);
disconnect_btn.setClickable(false);
}
/*
* else { Toast.makeText(getApplicationContext(),
* "TRY AGAIN!", Toast.LENGTH_SHORT).show(); }
*/
}
}
});
}
public void onBackPressed() {
phone.disconnect();
incomingAlert = null;
Intent in = new Intent(IncomingPhoneActivity.this, MenuItems.class);
in.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
startActivity(in);
finish();
}
class TokenTask extends AsyncTask<Void, Void, Void> {
String message;
JSONObject jsonResponse;
int crash_app;
#Override
protected void onPreExecute() {
}
#Override
protected Void doInBackground(Void... params) {
DefaultHttpClient httpclient = new DefaultHttpClient();
HttpGet httppost = new HttpGet(AUTH_PHP_SCRIPT);
try {
HttpResponse response = httpclient.execute(httppost);
if (response.getStatusLine().getStatusCode() == 200) {
HttpEntity entity = response.getEntity();
if (entity != null) {
IncomingPhone.capabilityToken = EntityUtils
.toString(entity);
IncomingPhone.decodedString = IncomingPhone.capabilityToken
.replace("\"", "");
}
}
} catch (Exception e) {
crash_app = 5;
message = "Something went wrong. Please try again later.";
return null;
}
return null;
}
#Override
protected void onPostExecute(Void result) {
if (status.equals("success")) {
final Handler handler12 = new Handler();
handler12.postDelayed(new Runnable() {
public void run() {
mainButton.setEnabled(true);
call_btn.setEnabled(true);
mainButton
.setBackgroundResource(R.drawable.light_green_connect);
}
}, 3000);
}
if (status.equals("failure")) {
Toast.makeText(getApplicationContext(), message,
Toast.LENGTH_LONG).show();
// mainButton.setBackgroundColor(Color.parseColor("#4ca64c"));
mainButton.setBackgroundResource(R.drawable.dark_green_connect);
mainButton.setEnabled(false);
call_btn.setEnabled(false);
}
}
}
#Override
public void onNewIntent(Intent intent) {
super.onNewIntent(intent);
setIntent(intent);
}
#Override
public void onResume() {
super.onResume();
if (phone.handleIncomingIntent(getIntent())) {
showIncomingAlert();
addStatusMessage(R.string.got_incoming);
if (Utils.isNetworkAvailable(IncomingPhoneActivity.this)) {
syncMainButton();
} else {
Toast.makeText(IncomingPhoneActivity.this,
"No internet connection!!", Toast.LENGTH_SHORT).show();
}
}
}
#Override
public void onDestroy() {
super.onDestroy();
if (phone != null) {
phone.setListeners(null, null, null);
phone = null;
}
}
#Override
public void onClick(View view) {
if ((view.getId() == R.id.d_call) || (view.getId() == R.id.d_call_btn)) {
phone.disconnect();
incomingAlert = null;
phone.setSpeakerEnabled(false);
phone.setCallMuted(false);
Intent in = new Intent(IncomingPhoneActivity.this, MenuItems.class);
startActivity(in);
finish();
}
if ((view.getId() == R.id.call) || (view.getId() == R.id.call_btn)) {
} else if (view.getId() == R.id.capabilites_button) {
phone.login(clientNameTextBox.getText().toString(),
outgoingCheckBox.isChecked(), incomingCheckBox.isChecked());
}
}
#Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
if (group.getId() == R.id.input_select) {
if (checkedId == R.id.input_number) {
outgoingTextBox.setInputType(InputType.TYPE_CLASS_PHONE);
outgoingTextBox.setHint(R.string.outgoing_number);
} else {
outgoingTextBox.setInputType(InputType.TYPE_CLASS_TEXT);
outgoingTextBox.setHint(R.string.outgoing_client);
}
outgoingTextBox.setText("");
}
}
#Override
public void onCheckedChanged(CompoundButton button, boolean isChecked) {
if (button.getId() == R.id.speaker_btn) {
phone.setSpeakerEnabled(isChecked);
} else if (button.getId() == R.id.mute_btn) {
phone.setCallMuted(isChecked);
}
}
private void addStatusMessage(final String message) {
handler.post(new Runnable() {
#Override
public void run() {
logTextBox.append('-' + message + '\n');
}
});
}
private void addStatusMessage(int stringId) {
addStatusMessage(getString(stringId));
}
private void showIncomingAlert() {
handler.post(new Runnable() {
#Override
public void run() {
if (incomingAlert == null) {
notification = RingtoneManager
.getDefaultUri(RingtoneManager.TYPE_RINGTONE);
r = RingtoneManager.getRingtone(getApplicationContext(),
notification);
am = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
switch (am.getRingerMode()) {
case AudioManager.RINGER_MODE_SILENT:
r.play();
break;
case AudioManager.RINGER_MODE_VIBRATE:
long pattern[] = { 0, 500, 200, 300, 500 };
vibrator.vibrate(pattern, 0);
break;
case AudioManager.RINGER_MODE_NORMAL:
r.play();
break;
}
incomingAlert = new AlertDialog.Builder(
IncomingPhoneActivity.this)
.setTitle(R.string.incoming_call)
.setCancelable(false)
.setMessage(R.string.incoming_call_message)
.setPositiveButton(R.string.answer,
new DialogInterface.OnClickListener() {
#Override
public void onClick(
DialogInterface dialog,
int which) {
switch (am.getRingerMode()) {
case AudioManager.RINGER_MODE_SILENT:
r.stop();
break;
case AudioManager.RINGER_MODE_VIBRATE:
vibrator.cancel();
break;
case AudioManager.RINGER_MODE_NORMAL:
r.stop();
break;
}
phone.acceptConnection();
disconnect_btn
.setVisibility(View.VISIBLE);
mainButton.setVisibility(View.GONE);
incomingAlert = null;
}
})
.setNegativeButton(R.string.ignore,
new DialogInterface.OnClickListener() {
#Override
public void onClick(
DialogInterface dialog,
int which) {
switch (am.getRingerMode()) {
case AudioManager.RINGER_MODE_SILENT:
r.stop();
break;
case AudioManager.RINGER_MODE_VIBRATE:
vibrator.cancel();
break;
case AudioManager.RINGER_MODE_NORMAL:
r.stop();
break;
}
phone.ignoreIncomingConnection();
incomingAlert = null;
}
})
.setOnCancelListener(
new DialogInterface.OnCancelListener() {
#Override
public void onCancel(
DialogInterface dialog) {
phone.ignoreIncomingConnection();
}
}).create();
incomingAlert.show();
}
}
});
}
private void hideIncomingAlert() {
handler.post(new Runnable() {
#Override
public void run() {
if (incomingAlert != null) {
incomingAlert.dismiss();
incomingAlert = null;
}
}
});
}
#Override
public void onLoginStarted() {
addStatusMessage(R.string.logging_in);
}
#Override
public void onLoginFinished() {
addStatusMessage(phone.canMakeOutgoing() ? R.string.outgoing_ok
: R.string.no_outgoing_capability);
addStatusMessage(phone.canAcceptIncoming() ? R.string.incoming_ok
: R.string.no_incoming_capability);
syncMainButton();
}
#Override
public void onLoginError(Exception error) {
if (error != null)
addStatusMessage(String.format(getString(R.string.login_error_fmt),
error.getLocalizedMessage()));
else
addStatusMessage(R.string.login_error_unknown);
syncMainButton();
}
#Override
public void onIncomingConnectionDisconnected() {
hideIncomingAlert();
addStatusMessage(R.string.incoming_disconnected);
syncMainButton();
}
#Override
public void onConnectionConnecting() {
addStatusMessage(R.string.attempting_to_connect);
syncMainButton();
}
#Override
public void onConnectionConnected() {
addStatusMessage(R.string.connected);
syncMainButton();
}
#Override
public void onConnectionFailedConnecting(Exception error) {
if (error != null)
addStatusMessage(String.format(
getString(R.string.couldnt_establish_outgoing_fmt),
error.getLocalizedMessage()));
else
addStatusMessage(R.string.couldnt_establish_outgoing);
}
#Override
public void onConnectionDisconnecting() {
addStatusMessage(R.string.disconnect_attempt);
syncMainButton();
}
#Override
public void onConnectionDisconnected() {
addStatusMessage(R.string.disconnected);
syncMainButton();
}
#Override
public void onConnectionFailed(Exception error) {
if (error != null)
addStatusMessage(String.format(
getString(R.string.connection_error_fmt),
error.getLocalizedMessage()));
else
addStatusMessage(R.string.connection_error);
syncMainButton();
}
#Override
public void onDeviceStartedListening() {
addStatusMessage(R.string.device_listening);
}
#Override
public void onDeviceStoppedListening(Exception error) {
if (error != null)
addStatusMessage(String.format(
getString(R.string.device_listening_error_fmt),
error.getLocalizedMessage()));
else
addStatusMessage(R.string.device_not_listening);
}
}

Is it possible to pass Chromcast connection info between Activities?

I am developing an app that connects to a Chromecast, everything works fine when I do it from one activity, the problem is, that I want that activity to be fullscreen with no action bar, and no soft buttons. I am achiving that, hiding them when the users connects to the Chromecast, but it would be better if the users connect from the first activity (with action bar) and then goes to the second activity and the magic occurs there. But I can't pass the session between the activities. I have follow this tutorial to make the communication with the chromecast but tried to change a little to make the 2 acitivites communication.
Of course I have tested it and it returns a NullPointerException.
ConnectionFailedListener.java
public class ConnectionFailedListener implements GoogleApiClient.OnConnectionFailedListener {
private String TAG;
private MyConnectionCallbacks myConnectionCB;
public ConnectionFailedListener(String _TAG)
{
this.TAG=_TAG;
}
private void setMyConnectionCallBack(MyConnectionCallbacks _ConnectionCallbacks)
{
this.myConnectionCB = _ConnectionCallbacks;
}
#Override
public void onConnectionFailed(ConnectionResult result)
{
Log.e(TAG, "onConnectionFailed ");
myConnectionCB.teardown();
}
}
Channel.java
public class EventChannel implements Cast.MessageReceivedCallback
{
private Context myContext;
private String TAG;
/**
* #return custom namespace
*/
public EventChannel(Context _context, String _TAG)
{
this.myContext = _context;
this.TAG = _TAG;
}
public String getNamespace()
{
return myContext.getString(R.string.namespace);
}
/*
* Receive message from the receiver app
*/
#Override
public void onMessageReceived(CastDevice castDevice, String namespace,String message)
{
Log.d(TAG, "onMessageReceived: " + message);
}
}
ConnectionCallbacks.java
public class MyConnectionCallbacks implements GoogleApiClient.ConnectionCallbacks
{
private String TAG;
private Context myContext;
public CastDevice mSelectedDevice;
private GoogleApiClient mApiClient;
private boolean mWaitingForReconnect;
private EventChannel mEventChannel;
private String mSessionId;
private boolean mApplicationStarted;
private EventChannel myChannel;
public MyConnectionCallbacks(Context _context, String _TAG)
{
this.myContext=_context;
this.TAG = _TAG;
}
public void setApiClient(GoogleApiClient _newApiClient)
{
this.mApiClient = _newApiClient;
}
#Override
public void onConnected(Bundle connectionHint)
{
Log.d(TAG, "onConnected");
if (mApiClient == null)
{
// We got disconnected while this runnable was pending execution.
return;
}
try
{
if (mWaitingForReconnect)
{
mWaitingForReconnect = false;
// Check if the receiver app is still running
if ((connectionHint != null) && connectionHint.getBoolean(Cast.EXTRA_APP_NO_LONGER_RUNNING))
{
Log.d(TAG, "App is no longer running");
teardown();
}
else
{// Re-create the custom message channel
try
{
Cast.CastApi.setMessageReceivedCallbacks(mApiClient,mEventChannel.getNamespace(),mEventChannel);
}
catch (IOException e)
{
Log.e(TAG, "Exception while creating channel", e);
}
}
}
else
{// Launch the receiver app because is connected
Cast.CastApi.launchApplication(mApiClient,myContext.getString(R.string.app_id), false).setResultCallback(
new ResultCallback<Cast.ApplicationConnectionResult>()
{
#Override
public void onResult(Cast.ApplicationConnectionResult result) {
Status status = result.getStatus();
Log.d(TAG,"ApplicationConnectionResultCallback.onResult: statusCode"+ status.getStatusCode());
if (status.isSuccess())
{
ApplicationMetadata applicationMetadata = result.getApplicationMetadata();
mSessionId = result.getSessionId();
String applicationStatus = result.getApplicationStatus();
boolean wasLaunched = result.getWasLaunched();
Log.d(TAG,"application name: "+ applicationMetadata.getName()
+ ", status: "+ applicationStatus
+ ", sessionId: "+ mSessionId
+ ", wasLaunched: "+ wasLaunched);
mApplicationStarted = true;
// Create the custom message channel
mEventChannel = new EventChannel(myContext,TAG);
try
{
Cast.CastApi.setMessageReceivedCallbacks(mApiClient,mEventChannel.getNamespace(),mEventChannel);
}
catch (IOException e)
{
Log.e(TAG,"Exception while creating channel",e);
}
// set the initial instructions on the receiver
sendMessage("starting from mobile");
}
else
{
Log.e(TAG,"application could not launch");
teardown();
}
}
});
}
}
catch (Exception e)
{
Log.e(TAG, "Failed to launch application", e);
}
}
#Override
public void onConnectionSuspended(int cause)
{
Log.d(TAG, "onConnectionSuspended");
mWaitingForReconnect = true;
}
public void sendMessage(String message)
{
if (mApiClient != null && mEventChannel != null)
{
try
{
Cast.CastApi.sendMessage(mApiClient,mEventChannel.getNamespace(), message)
.setResultCallback(new ResultCallback<Status>() {
#Override
public void onResult(Status result)
{
if (!result.isSuccess())
{
Log.e(TAG, "Sending message failed");
}
}
});
}
catch (Exception e)
{
Log.e(TAG, "Exception while sending message", e);
}
}
else
{
Toast.makeText(myContext, message, Toast.LENGTH_SHORT).show();
}
}
public void teardown()
{
Log.d(TAG, "teardown");
if (mApiClient != null)
{
if (mApplicationStarted)
{
if (mApiClient.isConnected() || mApiClient.isConnecting())
{
try
{
Cast.CastApi.stopApplication(mApiClient, mSessionId);
if (myChannel != null)
{
Cast.CastApi.removeMessageReceivedCallbacks(mApiClient,myChannel.getNamespace());
myChannel = null;
}
}
catch (IOException e)
{
Log.e(TAG, "Exception while removing channel", e);
}
mApiClient.disconnect();
}
mApplicationStarted = false;
}
mApiClient = null;
}
mSelectedDevice = null;
mWaitingForReconnect = false;
mSessionId = null;
}
}
MediaRouterCallback.java
public class MyMediaRouterCallback extends MediaRouter.Callback {
private GoogleApiClient mApiClient;
private Cast.Listener mCastListener;
private Context myContext;
private ConnectionFailedListener mConnectionFailedListener;
public MyConnectionCallbacks mConnectionCallbacks;
public String TAG;
//private String mSessionId;
public MyMediaRouterCallback(Context _context, String _TAG)
{
this.myContext = _context;
this.TAG = _TAG;
mConnectionCallbacks = new MyConnectionCallbacks(myContext,TAG);
}
#Override
public void onRouteSelected(MediaRouter router, MediaRouter.RouteInfo info) {
Log.d(TAG, "onRouteSelected");
mConnectionCallbacks.mSelectedDevice = CastDevice.getFromBundle(info.getExtras());
launchReceiver();
}
#Override
public void onRouteUnselected(MediaRouter router, MediaRouter.RouteInfo info) {
Log.d(TAG, "onRouteUnselected: info=" + info);
mConnectionCallbacks.teardown();
mConnectionCallbacks.mSelectedDevice = null;
}
private void launchReceiver()
{
try
{
mCastListener = new Cast.Listener() {
#Override
public void onApplicationDisconnected(int errorCode) {
Log.d(TAG, "application has stopped");
mConnectionCallbacks.teardown();
}
};
//Constructors for Google Play Services Connection
//mConnectionCallbacks = new MyConnectionCallbacks(myContext,TAG);
mConnectionFailedListener = new ConnectionFailedListener(TAG);
Cast.CastOptions.Builder apiOptionsBuilder =
Cast.CastOptions.builder(mConnectionCallbacks.mSelectedDevice, mCastListener);
// ApiClient to Connect to Google Play services
mApiClient = new GoogleApiClient.Builder(myContext)
.addApi(Cast.API, apiOptionsBuilder.build())
.addConnectionCallbacks(mConnectionCallbacks)
.addOnConnectionFailedListener(mConnectionFailedListener)
.build();
mConnectionCallbacks.setApiClient(mApiClient);//setting ApiClient to achieve sendMessage
//Connect to Google Play services
mApiClient.connect();
}
catch (Exception e)
{
Log.e(TAG, "Failed launchReceiver", e);
}
}
}
FirstActivity (where the chromecast is connected)
public class ConnectCastActivity extends ActionBarActivity {
private static final String TAG = ConnectCastActivity.class.getSimpleName();
private MediaRouter mMediaRouter;
private MediaRouteSelector mMediaRouteSelector;
private MediaRouter.Callback mMediaRouterCallback;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ActionBar actionBar = getSupportActionBar();
actionBar.setBackgroundDrawable(new ColorDrawable(android.R.color.transparent));
setContentView(R.layout.activity_connect_cast);
// Configure Cast device discovery
mMediaRouter = MediaRouter.getInstance(getApplicationContext());
mMediaRouteSelector = new MediaRouteSelector.Builder().addControlCategory(CastMediaControlIntent.categoryForCast(getResources().getString(R.string.app_id))).build();
mMediaRouterCallback = new MyMediaRouterCallback(getApplicationContext(),TAG);
TextView myTextView = (TextView)findViewById(R.id.txt_helloworld);
myTextView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent i = new Intent(getApplicationContext(),MainActivity.class);
startActivity(i);
}
});
}
#Override
protected void onStart() {
super.onStart();
// Start media router discovery
mMediaRouter.addCallback(mMediaRouteSelector, mMediaRouterCallback, MediaRouter.CALLBACK_FLAG_REQUEST_DISCOVERY);
}
#Override
protected void onStop() {
// End media router discovery
Log.w(TAG, "onStop");
//mMediaRouter.removeCallback(mMediaRouterCallback);
super.onStop();
}
#Override
public void onDestroy() {
Log.w(TAG, "onDestroy");
// mMediaRouterCallback.onRouteUnselected(mMediaRouter,null);
super.onDestroy();
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
super.onCreateOptionsMenu(menu);
getMenuInflater().inflate(R.menu.menu_connect_cast, menu);
MenuItem mediaRouteMenuItem = menu.findItem(R.id.media_route_menu_item);
MediaRouteActionProvider mediaRouteActionProvider = (MediaRouteActionProvider) MenuItemCompat.getActionProvider(mediaRouteMenuItem);
// Set the MediaRouteActionProvider selector for device discovery.
mediaRouteActionProvider.setRouteSelector(mMediaRouteSelector);
return true;
}
}
SecondActivity (the one that will send the message)
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
MediaRouter mMediaRouter = MediaRouter.getInstance(getApplicationContext());
mConnectionCallbacks = new MyConnectionCallbacks(getApplicationContext(),TAG);
setContentView(R.layout.activity_main);
//What should I put here?
}

If you have an application with multiple activities, you are better off if you do not tie the cast connectivity and related states to any of those activities, instead you can have a singleton, or use your Application instance or use a background service or ... to maintain the connection and access the required pieces that are maintained in that global place. If it fits your requirement, you might want to use the CastCompanionLibrary that already does most of the routine stuff for you; if not, you can take a look at it and the see how the CastVideos sample app uses that and try to do something similar for your application.