Android send received data from a socket service to Activity

Android send received data from a socket service to Activity - android

I am looking for a way to send received data (receive while flag is set) from a socket service to an activity that is bound to the service. What is the best way to do this ? Handlers , AsyncTask or something else ?
this is the SocketClass I am using to start a connection and handle the incoming messages :
class connectSocket implements Runnable {
#Override
public void run() {
running= true;
try {
socket = new Socket(serverAddr, SERVERPORT);
try {
mBufferOut = new ObjectOutputStream(socket.getOutputStream());
mBufferIn = new ObjectInputStream(socket.getInputStream());
while(running){
msg = (Message) mBufferIn.readObject();
}
}
catch (Exception e) {
Log.e("TCP", "S: Error", e);
}
} catch (Exception e) {
Log.e("TCP", "C: Error", e);
}
}
}
Update :
public class SocketService extends Service {
private static final String TAG = "com.oos.kiesa.chat";
public static final String SERVERIP = "192.168.X.X";
public static final int SERVERPORT = 4444;
private ObjectOutputStream mBufferOut;
private ObjectInputStream mBufferIn;
Socket socket;
InetAddress serverAddr;
boolean mRun;
Object msg;
public Integer command;
#Override
public IBinder onBind(Intent intent) {
return myBinder;
}
private final IBinder myBinder = new LocalBinder();
public class LocalBinder extends Binder {
public SocketService getService() {
return SocketService.this;
}
}
#Override
public void onCreate() {
super.onCreate();
}
public void IsBoundable(){
Toast.makeText(this,"is boundable", Toast.LENGTH_LONG).show();
}
public void sendMessage(String message) throws IOException {
if (mBufferOut != null) {
mBufferOut.writeObject(message);
mBufferOut.flush();
}
}
public void sendMessage(Message message) throws IOException {
if (mBufferOut != null) {
mBufferOut.writeObject(message);
mBufferOut.flush();
}
}
public void sendMessage(User user) throws IOException {
if (mBufferOut != null) {
mBufferOut.writeObject(user);
mBufferOut.flush();
}
}
public void sendMessage(int command) throws IOException {
if (mBufferOut != null) {
mBufferOut.writeInt(command);
mBufferOut.flush();
}
}
#Override
public int onStartCommand(Intent intent,int flags, int startId){
super.onStartCommand(intent, flags, startId);
System.out.println("I am in on start");
Runnable connect = new connectSocket();
new Thread(connect).start();
return START_STICKY;
}
public void stopClient() throws IOException{
if (mBufferOut != null) {
mBufferOut.flush();
mBufferOut.close();
}
mBufferIn = null;
mBufferOut = null;
socket.close();
}
class connectSocket implements Runnable {
#Override
public void run() {
mRun = true;
try {
socket = new Socket(serverAddr, SERVERPORT);
try {
mBufferOut = new ObjectOutputStream(socket.getOutputStream());
mBufferIn = new ObjectInputStream(socket.getInputStream());
while(mRun){
switch(command.intValue()){
case Constants.ADD_MESSAGE:
msg = (Message) mBufferIn.readObject(); // send message to Activity
break;
}
}
}
catch (Exception e) {
Log.e("TCP", "S: Error", e);
}
} catch (Exception e) {
Log.e("TCP", "C: Error", e);
}
}
}
#Override
public void onDestroy() {
super.onDestroy();
try {
socket.close();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
socket = null;
}
}
Some guidance / examples would be greatly appreciated

I am sending you mine, hope it will help :
class SocketRequestHandler extends Thread {
static String EOF = "<EOF>";
TCPResponseModel tcpResponseDS;
Activity activity;
boolean doSkip = false;
String responseStringComplete = "";
Socket clientSocekt;
OutputStream clientSocketOutputStream;
PrintWriter clinetSocketPrintWriter;
DataInputStream clientSocketInputStream;
private SocketRequestHandler(TCPResponseModel tcpResponseDS, Activity activity, SaloonListener listener) {
this.tcpResponseDS = tcpResponseDS;
this.activity = activity;
this.listener = listener;
moreStores = tcpResponseDS.StoresFound;
}
public static SocketRequestHandler pingAll(Activity activity, TCPResponseModel tcpResponseDS, SaloonListener listener) {
SocketRequestHandler requestHandler = new SocketRequestHandler(tcpResponseDS, activity, listener);
requestHandler.start();
return requestHandler;
}
private void closeStreams() {
try {
clientSocekt.close();
clientSocketInputStream.close();
clinetSocketPrintWriter.close();
clientSocketOutputStream.close();
} catch (Exception e) {
e.printStackTrace();
}
}
#Override
public void run() {
try {
String pingingHost = "URL_TO_PING";
clientSocekt = new Socket(pingingHost, 12000);
clientSocketOutputStream = clientSocekt.getOutputStream();
clinetSocketPrintWriter = new PrintWriter(clientSocketOutputStream);
String firstPing = "{\"RequestId\":" + tcpResponseDS.RequestId + "}<EOF>";
clinetSocketPrintWriter.println(firstPing);
clinetSocketPrintWriter.flush();
byte[] bytes;
String pingStr = "";
clientSocketInputStream = new DataInputStream(clientSocekt.getInputStream());
while (true) {
bytes = new byte[1024];
clientSocketInputStream.read(bytes);
bytes = trim(bytes);
if (bytes.length > 0 && !doSkip) {
String newString = new String(bytes, "UTF-8");
String decoded = pingStr + newString;
pingStr = checkForMessage(decoded);
responseStringComplete += newString;
}
if (doSkip) {
break;
}
}
closeStreams();
} catch (UnknownHostException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
System.out.print(responseStringComplete);
}
}
}
To broadcast chat data just do :
msg = (Message) mBufferIn.readObject(); // Do code after this line
Intent localIntent = new Intent("CHAT_MESSAGE");
localIntent.putExtra("message", msg);
LocalBroadcastManager.getInstance(context).sendBroadcast(localIntent);
Now in the activity where you are showing the chat list you can do
class ReceiveMessages extends BroadcastReceiver {
#Override
public void onReceive(Context context, Intent intent) {
final String action = intent.getAction();
if (action.equals("CHAT_MESSAGE")) {
runOnUiThread(new Runnable() {
#Override
public void run() {
String chatMessage = getIntent().getStringExtra("message");
//get data from intent and update your chat list.
}
});
}
}
}
ReceiveMessages myReceiver;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//your code
myReceiver = new ReceiveMessages();
}
#Override
protected void onStart() {
super.onStart();
LocalBroadcastManager.getInstance(this).registerReceiver(myReceiver,
new IntentFilter("CHAT_MESSAGE"));
}
#Override
protected void onStop() {
super.onStop();
LocalBroadcastManager.getInstance(this).unregisterReceiver(myReceiver);
}

public class AsyncHttpClient {
public AsyncHttpClient() {
}
public static class SocketIORequest {
private String mUri;
private String mEndpoint;
private List<BasicNameValuePair> mHeaders;
public SocketIORequest(String uri) {
this(uri, null);
}
public SocketIORequest(String uri, String endpoint) {
this(uri, endpoint, null);
}
public SocketIORequest(String uri, String endpoint, List<BasicNameValuePair> headers) {
mUri = Uri.parse(uri).buildUpon().encodedPath("/socket.io/1/").build().toString();
mEndpoint = endpoint;
mHeaders = headers;
}
public String getUri() {
return mUri;
}
public String getEndpoint() {
return mEndpoint;
}
public List<BasicNameValuePair> getHeaders() {
return mHeaders;
}
}
public static interface StringCallback {
public void onCompleted(final Exception e, String result);
}
public static interface WebSocketConnectCallback {
public void onCompleted(Exception ex, WebSocketClient webSocket);
}
public void executeString(final SocketIORequest socketIORequest, final StringCallback stringCallback) {
new AsyncTask<Void, Void, Void>() {
#Override
protected Void doInBackground(Void... params) {
AndroidHttpClient httpClient = AndroidHttpClient.newInstance("android-websockets-2.0");
HttpPost post = new HttpPost(socketIORequest.getUri());
addHeadersToRequest(post, socketIORequest.getHeaders());
try {
HttpResponse res = httpClient.execute(post);
String responseString = readToEnd(res.getEntity().getContent());
if (stringCallback != null) {
stringCallback.onCompleted(null, responseString);
}
} catch (IOException e) {
if (stringCallback != null) {
stringCallback.onCompleted(e, null);
}
} finally {
httpClient.close();
httpClient = null;
}
return null;
}
private void addHeadersToRequest(HttpRequest request, List<BasicNameValuePair> headers) {
if (headers != null) {
Iterator<BasicNameValuePair> it = headers.iterator();
while (it.hasNext()) {
BasicNameValuePair header = it.next();
request.addHeader(header.getName(), header.getValue());
}
}
}
}.execute();
}
private byte[] readToEndAsArray(InputStream input) throws IOException {
DataInputStream dis = new DataInputStream(input);
byte[] stuff = new byte[1024];
ByteArrayOutputStream buff = new ByteArrayOutputStream();
int read = 0;
while ((read = dis.read(stuff)) != -1) {
buff.write(stuff, 0, read);
}
return buff.toByteArray();
}
private String readToEnd(InputStream input) throws IOException {
return new String(readToEndAsArray(input));
}

Related

how to repeate sending value by socket

I have this client and server communication program. I got the idea from Android-er website.
This codes send a one random number when the customer pressing the connection button and I want to send new random number of every five minutes when the client had been connected with server.
Client code:
public class MainActivity extends AppCompatActivity {
TextView textResponse;
EditText editTextAddress, editTextPort;
Button buttonConnect, buttonClear;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
editTextAddress = (EditText)findViewById(R.id.address);
editTextPort = (EditText)findViewById(R.id.port);
buttonConnect = (Button)findViewById(R.id.connect);
buttonClear = (Button)findViewById(R.id.clear);
textResponse = (TextView)findViewById(R.id.response);
buttonConnect.setOnClickListener(buttonConnectOnClickListener);
buttonClear.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v) {
textResponse.setText("");
}});
}
View.OnClickListener buttonConnectOnClickListener = new View.OnClickListener(){
#Override
public void onClick(View arg0) {
MyClientTask myClientTask = new MyClientTask(
editTextAddress.getText().toString(),
Integer.parseInt(editTextPort.getText().toString()));
myClientTask.execute();
}};
public class MyClientTask extends AsyncTask<Void, Void, Void> {
String dstAddress;
int dstPort;
String response = "";
MyClientTask(String addr, int port){
dstAddress = addr;
dstPort = port;
}
#Override
protected Void doInBackground(Void... arg0) {
Socket socket = null;
try {
socket = new Socket(dstAddress, dstPort);
ByteArrayOutputStream byteArrayOutputStream =
new ByteArrayOutputStream(1024);
byte[] buffer = new byte[1024];
int bytesRead;
InputStream inputStream = socket.getInputStream();
/*
* notice:
* inputStream.read() will block if no data return
*/
while ((bytesRead = inputStream.read(buffer)) != -1){
byteArrayOutputStream.write(buffer, 0, bytesRead);
response += byteArrayOutputStream.toString("UTF-8");
}
} catch (UnknownHostException e) {
// TODO Auto-generated catch block
e.printStackTrace();
response = "UnknownHostException: " + e.toString();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
response = "IOException: " + e.toString();
}finally{
if(socket != null){
try {
socket.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
return null;
}
#Override
protected void onPostExecute(Void result) {
textResponse.setText(response);
super.onPostExecute(result);
}
}
}
and this is the code of server:
public class MainActivity extends AppCompatActivity {
TextView info, infoip, msg, randGen;
String message = "";
ServerSocket serverSocket;
String vRand="";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
info = (TextView) findViewById(R.id.info);
infoip = (TextView) findViewById(R.id.infoip);
msg = (TextView) findViewById(R.id.msg);
randGen= (TextView)findViewById(R.id.viewRand);
infoip.setText(getIpAddress());
Thread socketServerThread = new Thread(new SocketServerThread());
socketServerThread.start();
}
public String rGenerate() {
Random rand= new Random();
int number= rand.nextInt(500-251)+251;
vRand = String.valueOf(number);
//randGen.setText(vRand);
return vRand;
}
#Override
protected void onDestroy() {
super.onDestroy();
if (serverSocket != null) {
try {
serverSocket.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
private class SocketServerThread extends Thread {
static final int SocketServerPORT = 8080;
int count = 0;
#Override
public void run() {
try {
serverSocket = new ServerSocket(SocketServerPORT);
MainActivity.this.runOnUiThread(new Runnable() {
#Override
public void run() {
info.setText("I'm waiting here: "
+ serverSocket.getLocalPort());
}
});
while (true) {
Socket socket = serverSocket.accept();
count++;
message += "#" + count + " from " + socket.getInetAddress()
+ ":" + socket.getPort() + "\n";
MainActivity.this.runOnUiThread(new Runnable() {
#Override
public void run() {
msg.setText(message);
}
});
SocketServerReplyThread socketServerReplyThread = new SocketServerReplyThread(
socket, count);
socketServerReplyThread.run();
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
private class SocketServerReplyThread extends Thread {
private Socket hostThreadSocket;
int cnt;
SocketServerReplyThread(Socket socket, int c) {
hostThreadSocket = socket;
cnt = c;
}
#Override
public void run() {
OutputStream outputStream;
String num =rGenerate();
try {
outputStream = hostThreadSocket.getOutputStream();
PrintStream printStream = new PrintStream(outputStream);
printStream.print(num);
printStream.close();
message += num + "\n";
MainActivity.this.runOnUiThread(new Runnable() {
#Override
public void run() {
msg.setText(message);
}
});
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
message += "Something wrong! " + e.toString() + "\n";
}
MainActivity.this.runOnUiThread(new Runnable() {
#Override
public void run() {
msg.setText(message);
}
});
}
}
private String getIpAddress() {
String ip = "";
try {
Enumeration<NetworkInterface> enumNetworkInterfaces = NetworkInterface
.getNetworkInterfaces();
while (enumNetworkInterfaces.hasMoreElements()) {
NetworkInterface networkInterface = enumNetworkInterfaces
.nextElement();
Enumeration<InetAddress> enumInetAddress = networkInterface
.getInetAddresses();
while (enumInetAddress.hasMoreElements()) {
InetAddress inetAddress = enumInetAddress.nextElement();
if (inetAddress.isSiteLocalAddress()) {
ip += "SiteLocalAddress: "
+ inetAddress.getHostAddress() + "\n";
}
}
}
} catch (SocketException e) {
// TODO Auto-generated catch block
e.printStackTrace();
ip += "Something Wrong! " + e.toString() + "\n";
}
return ip;
}
}

You can use handler to perform tasks at specific delay. I assumed you know how to send the random numbers using sockets so i wont mess socket codes
Button button = (Button) findViewById(R.id.start_button);
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
handler.postDelayed(new Runnable() {
#Override
public void run() {
sendData();
handler.postDelayed(this, 15000);
}
}, 15000);
}
});
private void sendData(){
new Worker().execute();
}
private class Worker extends AsyncTask<Void, Void, String>{
private static final String TAG = "Worker";
#Override
protected String doInBackground(Void... params) {
return "Hello There";
}
#Override
protected void onPostExecute(String s) {
Log.i(TAG, s);
}
}

You can use a Handler to do something in a certain time period. Try this
Handler customHandler = new android.os.Handler();
static final int SOCKET_VERIFY_TIME = 5000; //milliseconds
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
...
customHandler.postDelayed(updateTimerThread, SOCKET_VERIFY_TIME);
...
}
private Runnable updateTimerThread = new Runnable() {
public void run()
{
if(socket != null) {
if(socket.connected()) {
socket.emit("eventNumber", randNumber);
}
}
customHandler.postDelayed(this, SOCKET_VERIFY_TIME);
}
};
if you want stop updates use this
customHandler.removeCallbacks(updateTimerThread);
In your Client
public class MainActivity extends AppCompatActivity {
TextView textResponse;
EditText editTextAddress, editTextPort;
Button buttonConnect, buttonClear;
Handler customHandler = new android.os.Handler();
static final int SOCKET_VERIFY_TIME = 5000; //milliseconds
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
editTextAddress = (EditText)findViewById(R.id.address);
editTextPort = (EditText)findViewById(R.id.port);
buttonConnect = (Button)findViewById(R.id.connect);
buttonClear = (Button)findViewById(R.id.clear);
textResponse = (TextView)findViewById(R.id.response);
buttonConnect.setOnClickListener(buttonConnectOnClickListener);
buttonClear.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v) {
textResponse.setText("");
}});
/***** Events Socket ***********/
socket = IO.socket(new URI(URL_SERVER));
socket.on(Socket.EVENT_CONNECT, new Emitter.Listener() {
#Override
public void call(Object... args) {
yourActivity.this.runOnUiThread(new Runnable() {
#Override
public void run() {
// Socket is connect. Do something here
/******************* Set Handler delay ******************/
customHandler.postDelayed(updateTimerThread, SOCKET_VERIFY_TIME);
/************************************************/
}
});
}
}).on(Socket.EVENT_DISCONNECT, new Emitter.Listener() {
#Override
public void call(final Object... args) {
runOnUiThread(new Runnable() {
#Override
public void run() {
// Socket is disconnect. Do something here
customHandler.removeCallbacks(updateTimerThread); // stop handler updates
}
});
}
})
}
View.OnClickListener buttonConnectOnClickListener = new View.OnClickListener(){
#Override
public void onClick(View arg0) {
MyClientTask myClientTask = new MyClientTask(
editTextAddress.getText().toString(),
Integer.parseInt(editTextPort.getText().toString()));
myClientTask.execute();
}};
private Runnable updateTimerThread = new Runnable() {
public void run()
{
if(socket != null) {
if(socket.connected()) {
socket.emit("eventNumber", randNumber);
}
}
customHandler.postDelayed(this, SOCKET_VERIFY_TIME);
}
};
public class MyClientTask extends AsyncTask<Void, Void, Void> {
String dstAddress;
int dstPort;
String response = "";
MyClientTask(String addr, int port){
dstAddress = addr;
dstPort = port;
}
#Override
protected Void doInBackground(Void... arg0) {
Socket socket = null;
try {
socket = new Socket(dstAddress, dstPort);
ByteArrayOutputStream byteArrayOutputStream =
new ByteArrayOutputStream(1024);
byte[] buffer = new byte[1024];
int bytesRead;
InputStream inputStream = socket.getInputStream();
/*
* notice:
* inputStream.read() will block if no data return
*/
while ((bytesRead = inputStream.read(buffer)) != -1){
byteArrayOutputStream.write(buffer, 0, bytesRead);
response += byteArrayOutputStream.toString("UTF-8");
}
} catch (UnknownHostException e) {
// TODO Auto-generated catch block
e.printStackTrace();
response = "UnknownHostException: " + e.toString();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
response = "IOException: " + e.toString();
}finally{
if(socket != null){
try {
socket.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
return null;
}
#Override
protected void onPostExecute(Void result) {
textResponse.setText(response);
super.onPostExecute(result);
}
}
}

Unable to verify response from server using Sockets in android

I am working on an android chat application based on sockets. I am using the following code to implement this:
NetClient.java
public class NetClient {
/**
* Maximum size of buffer
*/
public static final int BUFFER_SIZE = 2048;
private Socket socket = null;
private PrintWriter out = null;
private BufferedReader in = null;
private String host = null;
private int port = 3000;
// private int port;
/**
* Constructor with Host, Port
*
* #param host
* #param port
*/
public NetClient(String host, int port) {
this.host = host;
this.port = port;
}
private void connectWithServer() {
Log.e("Server", "Connecting with server");
try {
if (socket == null) {
System.out.println("Socket is null");
socket = new Socket(this.host, this.port);
out = new PrintWriter(socket.getOutputStream());
in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
}
} catch (IOException e) {
e.printStackTrace();
}
}
private void disConnectWithServer() {
Log.e("Server", "Disconnecting with server");
if (socket != null) {
if (socket.isConnected()) {
try {
in.close();
out.close();
socket.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
public void sendDataWithString(String message) {
Log.e("Send data", "Sendind data to server");
if (message != null) {
connectWithServer();
out.write(message);
out.flush();
}
}
public String receiveDataFromServer() {
Log.e("Receive data", "Receivind data from the server");
try {
String message = "";
int charsRead = 0;
char[] buffer = new char[BUFFER_SIZE];
while ((charsRead = in.read(buffer)) != -1) {
message += new String(buffer).substring(0, charsRead);
}
//Log.e("ServerResponse", message);
disConnectWithServer(); // disconnect server
return message;
} catch (IOException e) {
return "Error receiving response: " + e.getMessage();
}
}
}
ChatActivity.java
public class ChatActivity extends Activity {
private EditText edtMsg;
private Button btnSend;
private String serverIpAddress = "192.168.2.250";
private int port = 3000;
private boolean connected = false;
private Handler handler = new Handler();
private BufferedReader in = null;
private PrintWriter out = null;
public static final int BUFFER_SIZE = 2048; // Max. size of buffer
private Socket socket = null;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_chat);
edtMsg = (EditText) findViewById(R.id.edtMessage);
btnSend = (Button) findViewById(R.id.btnSendMessage);
btnSend.setOnClickListener(connectListener);
}
private View.OnClickListener connectListener = new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(getApplicationContext(),"clicked",Toast.LENGTH_LONG).show();
Log.e("Button", "Button clicked");
if (!connected) {
if (!serverIpAddress.equals("")) {
Thread cThread = new Thread(new ClientThread());
cThread.start();
}
}
}
};
public class ClientThread implements Runnable {
public void run() {
NetClient nc = new NetClient(serverIpAddress, port);
String message = edtMsg.getText().toString().trim();
Log.e("Msg", message);
nc.sendDataWithString(message);
String response = nc.receiveDataFromServer();
Log.e("Server Response ", response);
}
}
}
I am not able to verify whether the data has been posted to server or not as i am getting unexpected result from the server.
Logcat
E/Server Response﹕ [ 12-01 14:56:01.313 302: 1017 V/qcbassboost ]
I think i am doing some mistake in the use of socket.Please help me to resolve the issue.

Utilizing a socket in an android application

I've recently made a simple multicast client - server chat for java, now i am attempting to port the client on android.
The issue i'm facing is about dealing with the socket: the socket is created in a thread (as it'd crash the app otherwise), then i use the socket to istantiate an InputStreamReader and an OutputStreamWriter, however when trying to access any object created this way through a button listener, i'll get a null exception.
Also, if i were to put the two readers outside the thread, they would generate a null exception as well, even if i make sure the socket has been created already inside the thread.
I'd be glad if anybody could help me find out where is the issue, i apology for the messy code
public class ClientActivity extends AppCompatActivity {
public static int PORT = 1050;
public static String ADDRESS = "";
public static String USERNAME = "";
SusListenerThread inT;
public int ID;
public int roomID;
Socket socket = null;
BufferedReader in = null, stdIn = null;
PrintWriter out = null;
InputStreamReader isr;
OutputStreamWriter osw;
String userInput="";
public int mode=1;
public Button Bsend;
public Button Bbroadcast;
public Button Broom;
public EditText editMessage;
public EditText editReplies;
public EditText editRoom;
public TextView txtID;
public TextView txtUsername;
public TextView txtRoom;
public connectSocket coSocket;
public ClientActivity() {
}
public void setStuff(String str, int IDh){
this.ID=IDh;
this.USERNAME=str;
txtID.setText("ID: "+IDh);
txtUsername.setText("Username: "+str);
}
private class SusListenerThread extends Thread{
BufferedReader in = null;
public int ID;
public String username;
public boolean isSet=false;
//public View viiv;
public EditText editReplies;
public TextView txtRoom;
public SusListenerThread(InputStreamReader isr){
//this.viiv=viiv;
//editReplies = (EditText)viiv.findViewById(R.id.editReplies);
//txtRoom = (TextView)viiv.findViewById(R.id.textRoom);
in = new BufferedReader(isr);
//ClientGUI.jTextArea1.append(joj+"\n");
start();
}
#Override
public void run(){
String input="";
getStuff();
while(true)
{
try {
input=in.readLine();
} catch (IOException ex) {
//Logger.getLogger(ListenerThread.class.getName()).log(Level.SEVERE, null, ex);
}
if(input.charAt(0)=='0')
//ClientGUI.jTextArea1.append(input.substring(1)+"\n");
editReplies.append(input.substring(1)+"\n");
else if(input.charAt(0)=='1'){
//ClientGUI.jLabel2.setText("Stanza:"+input.substring(1));
txtRoom.setText("Room: "+input.substring(1));
}
}
}
public void getStuff(){
try {
ID=Integer.parseInt(in.readLine());
username+=in.readLine();
} catch (IOException ex) {
}
isSet=true;
}
}
private class connectSocket extends AsyncTask<Void, Void, Void> {
#Override
protected void onPostExecute(Void result) {
}
#Override
protected Void doInBackground(Void... params) {
try {
socket= new Socket(ADDRESS,PORT);
} catch (IOException e) {
try {
socket = new Socket("127.0.0.1", 1050);
}catch(Exception ex){
e.printStackTrace();
};
}
/*
try{
isr = new InputStreamReader ( socket.getInputStream());
//in = new BufferedReader(isr);
inT=new SusListenerThread(isr);
osw = new OutputStreamWriter ( socket.getOutputStream());
BufferedWriter bw = new BufferedWriter( osw );
out = new PrintWriter (bw, true);
} catch (IOException ex) {}
*/
return null;
}
#Override
protected void onPreExecute() {}
#Override
protected void onProgressUpdate(Void... values) {}
}
private class lilThread extends Thread {
public lilThread(){
start();
}
#Override
public void run(){
try {
socket = new Socket(ADDRESS, PORT);
}catch(Exception e ){
try {
socket = new Socket("79.42.49.56", 1050);
} catch (IOException ex) {ex.printStackTrace();}
}
try {
isr = new InputStreamReader ( socket.getInputStream());
} catch (IOException e) {
e.printStackTrace();
}
inT=new SusListenerThread(isr);
try {
osw = new OutputStreamWriter ( socket.getOutputStream());
} catch (IOException e) {
e.printStackTrace();
}
BufferedWriter bw = new BufferedWriter( osw );
out = new PrintWriter (bw, true);
while(!inT.isSet){
try {
wait(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
setStuff(inT.username.substring(4)/*Mi ritornava nullUtente invece di Utente*/, inT.ID);
try {
wait(10000);
} catch (InterruptedException e) {
e.printStackTrace();
}
try {
join();
} catch (InterruptedException e) {
e.printStackTrace();
}
interrupt();
}
}
public void InitializeStuff(){
lilThread lil = new lilThread();
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_client_activity_gui);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});
Bsend = (Button)findViewById(R.id.buttonSenderino);
Bbroadcast = (Button)findViewById(R.id.buttonBroadcast);
Broom = (Button)findViewById(R.id.buttonRoom);
editMessage = (EditText)findViewById(R.id.editMessage);
editReplies = (EditText)findViewById(R.id.editReplies);
editRoom = (EditText)findViewById(R.id.editRoom);
txtID = (TextView)findViewById(R.id.textID);
txtUsername = (TextView)findViewById(R.id.textUsername);
txtRoom = (TextView)findViewById(R.id.textRoom);
this.PORT = getIntent().getExtras().getInt("PORT");
this.ADDRESS = getIntent().getExtras().getString("ADDRESS");
this.USERNAME = getIntent().getExtras().getString("USERNAME");
InitializeStuff();
Bsend.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
//userInput= (EditText)v.findViewById(R.id.editMessage).getco;
userInput = editMessage.getText().toString();
if (!"".equals(userInput)) {
out.println(3 + userInput);
editMessage.setText("");
}
}
});
Bbroadcast.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
mode=0;
txtRoom.setText("Room: Broadcast");
roomID=-1;
out.println(mode);
editMessage.setText("");
}
});
Broom.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
mode=2;
try{
roomID=Integer.parseInt(editRoom.getText().toString());
txtRoom.setText("Stanza: "+roomID);
out.println(mode+""+roomID);
editRoom.setText("");
}catch(Exception e){
txtRoom.setText(" Err ");
}
}
});
}
}

Sending and Receiving messages using Smack Api for Android

I'm trying since last four days to send and receive chat message using own XMPP and with Smack+OpenFire. According to Smack's "readme.txt' i set up the connection and got logged user in. The code of connection and login is this
public static String TAG = "Test connection";
private static XMPPTCPConnection connection;
private static String userName = "demo";
private static String Password = "demo";
static {
// Create the configuration for this new connection
XMPPTCPConnectionConfiguration.Builder configBuilder = XMPPTCPConnectionConfiguration.builder();
configBuilder.setSecurityMode(XMPPTCPConnectionConfiguration.SecurityMode.disabled);
configBuilder.setResource("");
configBuilder.setUsernameAndPassword(userName, Password);
configBuilder.setServiceName("192.168.2.10");
configBuilder.setHost("192.168.2.10");
configBuilder.setPort(5222);
configBuilder.setCompressionEnabled(false);
connection = new XMPPTCPConnection(configBuilder.build());
}
This way i configured the connectionbuilder.
here i am connecting and signing in the user.
public class ConnectAndLogin extends AsyncTask<Void, Void, Void> {
#Override
protected Void doInBackground(Void... params) {
try {
connection.connect();
Log.i(TAG, "Connected to " + connection.getHost());
} catch (SmackException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (XMPPException e) {
Log.e(TAG, "Failed to connect to " + connection.getHost());
Log.e(TAG, e.toString());
e.printStackTrace();
}
try {
connection.login(userName, Password);
Log.i(TAG, "Login as a : " + connection.getUser());
setConnection(connection);
setListner();
} catch (XMPPException e) {
e.printStackTrace();
Log.i(TAG, "Login error " + e.toString());
} catch (SmackException e) {
e.printStackTrace();
Log.i(TAG, "Login error " + e.toString());
} catch (IOException e) {
e.printStackTrace();
Log.i(TAG, "Login error " + e.toString());
}
return null;
}
}
In some tutorials that the addPacketListner must be set after login. i done that in setConnection() and some posts went through addAsyncStanzaListner.
for send message
send.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Message msg = new Message("demo2", Message.Type.chat);
msg.setBody("Hi how are you");
if (connection != null) {
try {
connection.sendPacket(msg);
Log.d("Send to room : Name : ", "demo2");
Log.d("store", "store data to db");
//DBAdapter.addUserData(new UserData(text, "", "1" ,beam_id));
} catch (Exception e) {
Log.d("ooo", "msg exception" + e.getMessage());
}
}
}
});
and for receiving messages this code
public void setListner() {
connection.addAsyncStanzaListener(new StanzaListener() {
#Override
public void processPacket(Stanza packet) throws SmackException.NotConnectedException {
Message message = (Message) packet;
Log.i(TAG, "REC : " + message.getBody());
Log.i(TAG, "REC: " + message.getFrom());
}
}, new StanzaFilter() {
#Override
public boolean accept(Stanza stanza) {
return false;
}
});
}
here is my dependencies
compile 'org.igniterealtime.smack:smack-android:4.1.0'
compile 'org.igniterealtime.smack:smack-tcp:4.1.0'
compile 'org.igniterealtime.smack:smack-core:4.1.0'
compile 'org.igniterealtime.smack:smack-im:4.1.0'
compile 'org.igniterealtime.smack:smack-resolver-minidns:4.1.0'
compile 'org.igniterealtime.smack:smack-sasl-provided:4.1.0'
But still i'm not able to send messages to demo2 user.
Where im doing wrong.Please guide and help me.
Thanks

After long time now i can send text message and even images. this is my complete code to that handle the XmppConnection.
public class SmackConnection implements ConnectionListener, ChatManagerListener, RosterListener, ChatMessageListener, PingFailedListener {
private Gson gson;
private AsyncTask<Void, Void, Void> mRegisterTask;
private FileTransferManager manager;
private static final String TAG = "SMACK";
public static Context mApplicationContext;
public static SmackConnection instance = null;
private final String mServiceName = "192.168.2.3";
private static XMPPTCPConnection mConnection;
private static final byte[] dataToSend = StringUtils.randomString(1024 * 4 * 3).getBytes();
private static byte[] dataReceived;
private XMPPTCPConnectionConfiguration.Builder config;
public void init(String mUsername, String mPassword) {
Log.i(TAG, "connect()");
config = XMPPTCPConnectionConfiguration.builder();
config.setServiceName(mServiceName);
config.setSecurityMode(ConnectionConfiguration.SecurityMode.disabled);
config.setHost(mServiceName);
config.setPort(5222);
config.setDebuggerEnabled(true);
config.setResource("sender");
config.setCompressionEnabled(true);
config.setUsernameAndPassword(mUsername, mPassword);
XMPPTCPConnection.setUseStreamManagementResumptiodDefault(true);
XMPPTCPConnection.setUseStreamManagementDefault(true);
config.setCompressionEnabled(true);
try {
TLSUtils.acceptAllCertificates(config);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (KeyManagementException e) {
e.printStackTrace();
}
mConnection = new XMPPTCPConnection(config.build());
mConnection.addConnectionListener(this);
PingManager pingManager = PingManager.getInstanceFor(mConnection);
pingManager.registerPingFailedListener(this);
ChatManager.getInstanceFor(mConnection).addChatListener(this);
manager = FileTransferManager.getInstanceFor(mConnection);
manager.addFileTransferListener(new FileTransferIMPL());
FileTransferNegotiator.getInstanceFor(mConnection);
gson = new Gson();
connectAndLoginAnonymously();
}
public void connectAndLoginAnonymously() {
mRegisterTask = new AsyncTask<Void, Void, Void>() {
#Override
protected Void doInBackground(Void... params) {
try {
mConnection.connect();
mConnection.login();
} catch (SmackException | XMPPException | IOException e) {
e.printStackTrace();
}
return null;
}
#Override
protected void onPostExecute(Void res) {
}
};
// execute AsyncTask
mRegisterTask.execute(null, null, null);
}
public void login(final String username, final String password) {
mRegisterTask = new AsyncTask<Void, Void, Void>() {
#Override
protected Void doInBackground(Void... params) {
try {
disconnect();
config.setUsernameAndPassword(username, password);
mConnection.connect();
mConnection.login();
} catch (SmackException | XMPPException | IOException e) {
e.printStackTrace();
}
return null;
}
#Override
protected void onPostExecute(Void res) {
}
};
// execute AsyncTask
mRegisterTask.execute(null, null, null);
}
public void disconnect() {
Log.i(TAG, "disconnect()");
if (mConnection != null) {
mConnection.disconnect();
}
}
public void sendMessage(ChatMessage chatMessage) {
gson = new Gson();
Log.i(TAG, "sendMessage()");
Chat chat = ChatManager.getInstanceFor(mConnection).createChat(chatMessage.receiver + "#santosh-pc", this);
Gson gson = new Gson();
String body = gson.toJson(chatMessage);
final Message message = new Message();
message.setBody(body);
message.setStanzaId(chatMessage.msgid);
message.setType(Message.Type.chat);
try {
chat.sendMessage(message);
} catch (SmackException.NotConnectedException e) {
e.printStackTrace();
}
}
#Override
public void chatCreated(Chat chat, boolean createdLocally) {
Log.i(TAG, "chatCreated()");
chat.addMessageListener(this);
}
//MessageListener
#Override
public void processMessage(Chat chat, Message message) {
gson = new Gson();
Log.i(TAG, "processMessage()");
if (message.getType().equals(Message.Type.chat) || message.getType().equals(Message.Type.normal)) {
Log.i("MyXMPP_MESSAGE_LISTENER", "Xmpp message received: '"
+ message);
if (message.getType() == Message.Type.chat
&& message.getBody() != null) {
String sender1 = message.getFrom();
final Random random = new Random();
final String delimiter = "\\#";
String[] temp = sender1.split(delimiter);
final String sender = temp[0];
final ChatMessage chatMessage = gson.fromJson(message.getBody(), ChatMessage.class);
chatMessage.msgid = " " + random.nextInt(1000);
processMessage(sender, chatMessage);
}
}
}
public void processMessage(final String sender, ChatMessage chatMessage) {
chatMessage.sender = sender;
chatMessage.receiver = LoginSignupPage.self;
chatMessage.type = "TEXT";
chatMessage.isMine = false;
Log.i("MSG RECE", chatMessage.getBody());
ChatActivity.chatlist.add(chatMessage);
CommonMethods commonMethods = new CommonMethods(mApplicationContext);
commonMethods.createTable(sender);
commonMethods.insertIntoTable(sender, sender, LoginSignupPage.self, "fdfd", "r", "TEXT");
Log.i("MSG RECE", "Added");
new Handler(Looper.getMainLooper()).post(new Runnable() {
#Override
public void run() {
Log.i("MSG RECE", "LOOPER");
ChatActivity.chatAdapter.notifyDataSetChanged();
}
});
}
private void processMessage(final FileTransferRequest request) {
new Handler(Looper.getMainLooper()).post(new Runnable() {
#Override
public void run() {
Log.i("MSG RECE", "LOOPER");
Random random = new Random();
CommonMethods commonMethods = new CommonMethods(mApplicationContext);
int iend = request.getRequestor().lastIndexOf("#");
String requester = request.getRequestor().substring(0, 10);
commonMethods.createTable(requester);
Log.i("MSG RECE", requester);
commonMethods.insertIntoTable(requester, requester, LoginSignupPage.self, request.getFileName(), "r", "IMG");
final ChatMessage chatMessage = new ChatMessage(LoginSignupPage.self, requester,
request.getFileName(), "" + random.nextInt(1000), false, "IMG");
chatMessage.setMsgID();
chatMessage.body = request.getFileName();
chatMessage.Date = CommonMethods.getCurrentDate();
chatMessage.Time = CommonMethods.getCurrentTime();
chatMessage.type = "IMG";
ChatActivity.chatlist.add(chatMessage);
ChatActivity.chatAdapter.notifyDataSetChanged();
Log.i("MSG RECE", request.getRequestor());
}
});
}
//ConnectionListener
#Override
public void connected(XMPPConnection connection) {
Log.i(TAG, "connected()");
}
#Override
public void authenticated(XMPPConnection connection, boolean arg0) {
Log.i(TAG, "authenticated()");
}
#Override
public void connectionClosed() {
Log.i(TAG, "connectionClosed()");
}
#Override
public void connectionClosedOnError(Exception e) {
Log.i(TAG, "connectionClosedOnError()");
}
#Override
public void reconnectingIn(int seconds) {
Log.i(TAG, "reconnectingIn()");
}
#Override
public void reconnectionSuccessful() {
Log.i(TAG, "reconnectionSuccessful()");
}
#Override
public void reconnectionFailed(Exception e) {
Log.i(TAG, "reconnectionFailed()");
}
//RosterListener
#Override
public void entriesAdded(Collection<String> addresses) {
}
#Override
public void entriesUpdated(Collection<String> addresses) {
Log.i(TAG, "entriesUpdated()");
}
#Override
public void entriesDeleted(Collection<String> addresses) {
Log.i(TAG, "entriesDeleted()");
}
#Override
public void presenceChanged(Presence presence) {
Log.i(TAG, "presenceChanged()");
}
#Override
public void pingFailed() {
Log.i(TAG, "pingFailed()");
}
public boolean createNewAccount(String username, String newpassword) {
boolean status = false;
if (mConnection == null) {
try {
mConnection.connect();
} catch (SmackException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (XMPPException e) {
e.printStackTrace();
}
}
try {
String newusername = username + mConnection.getServiceName();
Log.i("service", mConnection.getServiceName());
AccountManager accountManager = AccountManager.getInstance(mConnection);
accountManager.createAccount(username, newpassword);
status = true;
} catch (SmackException.NoResponseException e) {
status = false;
e.printStackTrace();
} catch (XMPPException.XMPPErrorException e) {
e.printStackTrace();
status = false;
} catch (SmackException.NotConnectedException e) {
e.printStackTrace();
status = false;
}
mConnection.disconnect();
return status;
}
public XMPPTCPConnection getConnection() {
return mConnection;
}
public SmackConnection(Context context) {
mApplicationContext = context;
}
public SmackConnection() {
}
public XMPPTCPConnection SmackConnection() {
return mConnection;
}
public static SmackConnection getInstance(Context context) {
if (instance == null) {
instance = new SmackConnection(context);
mApplicationContext = context;
}
return instance;
}
public class FileTransferIMPL implements FileTransferListener {
#Override
public void fileTransferRequest(final FileTransferRequest request) {
final IncomingFileTransfer transfer = request.accept();
try {
InputStream is = transfer.recieveFile();
ByteArrayOutputStream os = new ByteArrayOutputStream();
int nRead;
byte[] buf = new byte[1024];
try {
while ((nRead = is.read(buf, 0, buf.length)) != -1) {
os.write(buf, 0, nRead);
}
os.flush();
} catch (IOException e) {
e.printStackTrace();
}
dataReceived = os.toByteArray();
createDirectoryAndSaveFile(dataReceived, request.getFileName());
Log.i("File Received", transfer.getFileName());
processMessage(request);
} catch (XMPPException ex) {
Logger.getLogger(SmackConnection.class.getName()).log(Level.SEVERE, null, ex);
} catch (SmackException e) {
e.printStackTrace();
}
}
}
public void fileTransfer(String user, Bitmap bitmap, String filename) throws XMPPException {
Roster roster = Roster.getInstanceFor(mConnection);
String destination = roster.getPresence(user).getFrom();
// Create the file transfer manager
FileTransferManager manager = FileTransferManager.getInstanceFor(mConnection);
// Create the outgoing file transfer
final OutgoingFileTransfer transfer = manager.createOutgoingFileTransfer(destination);
// Send the file
//transfer.sendFile(new File("abc.txt"), "You won't believe this!");
transfer.sendStream(new ByteArrayInputStream(convertFileToByte(bitmap)), filename, convertFileToByte(bitmap).length, "A greeting");
System.out.println("Status :: " + transfer.getStatus() + " Error :: " + transfer.getError() + " Exception :: " + transfer.getException());
System.out.println("Is it done? " + transfer.isDone());
if (transfer.getStatus().equals(FileTransfer.Status.refused))
System.out.println("refused " + transfer.getError());
else if (transfer.getStatus().equals(FileTransfer.Status.error))
System.out.println(" error " + transfer.getError());
else if (transfer.getStatus().equals(FileTransfer.Status.cancelled))
System.out.println(" cancelled " + transfer.getError());
else
System.out.println("Success");
}
public byte[] convertFileToByte(Bitmap bmp) {
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bmp.compress(Bitmap.CompressFormat.PNG, 100, stream);
return stream.toByteArray();
}
private void createDirectoryAndSaveFile(byte[] imageToSave, String fileName) {
File direct = new File(Environment.getExternalStorageDirectory() + "/LocShopie/Received/");
if (!direct.exists()) {
File wallpaperDirectory = new File("/sdcard/LocShopie/Received/");
wallpaperDirectory.mkdirs();
}
File file = new File(new File("/sdcard/LocShopie/Received/"), fileName);
if (file.exists()) {
file.delete();
}
try {
FileOutputStream out = new FileOutputStream(file);
out.write(imageToSave);
out.flush();
out.close();
} catch (Exception e) {
e.printStackTrace();
}
}
/*DeliveryReceiptManager dm = DeliveryReceiptManager
.getInstanceFor(mConnection);
dm.setAutoReceiptMode(DeliveryReceiptManager.AutoReceiptMode.always);
dm.addReceiptReceivedListener(new ReceiptReceivedListener() {
#Override
public void onReceiptReceived(final String fromid,
final String toid, final String msgid,
final Stanza packet) {
}
});*/
}
In this some lines are of database as i am storing the text msg in sqlite.
this method is for send msg.
public void sendTextMessage(View v) {
String message = msg_edittext.getEditableText().toString();
if (!message.equalsIgnoreCase("")) {
final ChatMessage chatMessage = new ChatMessage(LoginSignupPage.self, user2, message, "" + random.nextInt(1000), true, "TEXT");
chatMessage.setMsgID();
chatMessage.body = message;
chatMessage.Date = CommonMethods.getCurrentDate();
chatMessage.Time = CommonMethods.getCurrentTime();
chatMessage.type = "TEXT";
chatMessage.isMine = true;
msg_edittext.setText("");
try {
chatAdapter.add(chatMessage);
chatAdapter.notifyDataSetChanged();
chatXmpp.sendMessage(chatMessage);
} catch (Exception e) {
e.printStackTrace();
}
CommonMethods commonMethods = new CommonMethods(ChatActivity.this);
commonMethods.createTable(user2);
commonMethods.insertIntoTable(user2, chatMessage.sender, chatMessage.receiver, chatMessage.body, "m", "TEXT");
}
}

Android background service to connect TCP server and handle message

According to an google example, i write an android client for a connection protocol based on TCP Socket server can send and receive information and it works good. But now I want it to become a background service for these transactions, after I left the application it also can notify me the message in time, I think a couple of days, but without success, someone can give me some help? Very grateful!
MainActivity
public class MainActivity extends Activity implements
Handler.Callback, ChatFragment.MessageTarget {
public static final String TAG = "rolingbaby";
public static final int MESSAGE_READ = 0x400 + 1;
public static final int MESSAGE_SEND = 0x400 + 2;
public static final String SERVER_URL = "192.168.191.2";
public static final int SERVER_PORT = 7838;
private Handler handler = new Handler(this);
private ChatFragment chatFragment;
public Handler getHandler() {
return handler;
}
public void setHandler(Handler handler) {
this.handler = handler;
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
try {
InetAddress address = InetAddress.getByName(SERVER_URL);
Log.d(TAG, "Connected success!");
new MyTask1(((ChatFragment.MessageTarget) this).getHandler(),
address).execute();
} catch (UnknownHostException e) {
e.printStackTrace();
}
chatFragment = new ChatFragment();
getFragmentManager().beginTransaction()
.add(R.id.container, chatFragment, "trans")
.commit();
}
#Override
public boolean handleMessage(Message msg) {
switch (msg.what) {
case MESSAGE_READ:
byte[] readBuf = (byte[]) msg.obj;
// construct a string from the valid bytes in the buffer
String readMessage = new String(readBuf, 0, msg.arg1);
Log.d(TAG, readMessage);
(chatFragment).pushMessage("Rec: " + readMessage);
break;
case MESSAGE_SEND:
Object obj = msg.obj;
(chatFragment).setChatManager((ChatManager) obj);
}
return true;
}
#Override
protected void onPause() {
super.onPause();
finish();
}
}
Pivotal code in ChatFragment
public interface MessageTarget {
public Handler getHandler();
}
public void setChatManager(ChatManager obj) {
chatManager = obj;
}
public void pushMessage(String readMessage) {
adapter.add(readMessage);
adapter.notifyDataSetChanged();
}
MyTask
public class MyTask extends AsyncTask<Void, Void, Void>{
private static final String TAG = "ClientSocketHandler";
private Handler handler;
private ChatManager chat;
private InetAddress mAddress;
private static final int timeOut = 5000;
public MyTask(Handler handler, InetAddress serverAddress) {
this.handler = handler;
this.mAddress = serverAddress;
}
#Override
protected void onPreExecute() {
super.onPreExecute();
}
#Override
protected Void doInBackground(Void... params) {
Socket socket = new Socket();
try {
socket.bind(null);
socket.connect(new InetSocketAddress(mAddress.getHostAddress(),
MainActivity.SERVER_PORT), timeOut);
Log.d(TAG, "Launching the I/O handler");
chat = new ChatManager(socket, handler);
new Thread(chat).start();
} catch (IOException e) {
e.printStackTrace();
try {
socket.close();
} catch (IOException e1) {
e1.printStackTrace();
}
}
return null;
}
public ChatManager getChat() {
return chat;
}
}
ChatManager
public class ChatManager implements Runnable {
private Socket socket = null;
private Handler handler;
public ChatManager(Socket socket, Handler handler) {
this.socket = socket;
this.handler = handler;
}
private InputStream iStream;
private OutputStream oStream;
private static final String TAG = "ChatHandler";
public static String readMessage;
#Override
public void run() {
try {
iStream = socket.getInputStream();
oStream = socket.getOutputStream();
byte[] buffer = new byte[1024];
int bytes;
handler.obtainMessage(MainActivity.MESSAGE_SEND, this)
.sendToTarget();
while (true) {
try {
// Read from the InputStream
bytes = iStream.read(buffer);
if (bytes == -1) {
break;
}else{
readMessage = new String(buffer, "UTF-8");
}
// Send the obtained bytes to the UI Activity
Log.d(TAG, "Rec:" + String.valueOf(buffer));
handler.obtainMessage(MainActivity.MESSAGE_READ,
bytes, -1, buffer).sendToTarget();
} catch (IOException e) {
Log.e(TAG, "disconnected", e);
}
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
socket.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
public void write(byte[] buffer) {
try {
oStream.write(buffer);
} catch (IOException e) {
Log.e(TAG, "Exception during write", e);
}
}
}

Develop Reference

The Android operating system is a mobile operating system that was developed by Google (GOOGL?) to be primarily used for touchscreen devices, cell phones, and tablets.

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