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When I call dbconctfun(view v) method through onclick threads and runnable code it is executing last after executing other code in the dbconctfun(view v) method. In the console it shows:
out of loop out of loop
test####### multiple class.forname
queryexct queryexct
My code:
package com.example.loginandroid;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.util.Log;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;
import android.os.Looper;
public class MainActivity extends Activity{
String username,password; ResultSet rs =null;
boolean temcfag=false,temqfag=true;
public static String tag="Lifecycle activity";
EditText user,pass;
AlertDialog.Builder dialog;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
dialog=new AlertDialog.Builder(this);
dialog.setNeutralButton("OK", null);
user=(EditText)findViewById(R.id.editText1);
pass=(EditText)findViewById(R.id.editText2);
}
Thread thrd1,thrd2,thrd3;
Connection con;
String result ="",queryexct;
public void dbconctfun(View v ) throws SQLException {
try {
Class.forName("com.mysql.jdbc.Driver");
Log.v("test#######","multiple class.forname");
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
thrd1 = new Thread(new Runnable() {
public void run() {
while (!Thread.interrupted()) {
try {
Thread.sleep(100);
} catch (InterruptedException e1) {
}
if (con == null) {
try {
con = DriverManager.getConnection("jdbc:mysql://111.111.11.11:6666/dyne", "root1", "mysql");
} catch (SQLException e) {
e.printStackTrace();
con = null;
}
if ((thrd2 != null) && (!thrd2.isAlive()))
thrd2.start();
}
}
}
});
if ((thrd1 != null) && (!thrd1.isAlive())) thrd1.start();
thrd2 = new Thread(new Runnable() {
public void run() {
while (!Thread.interrupted()) {
if (con != null) {
if (temqfag) {
try {
Statement st = con.createStatement();
username=user.getText().toString().trim();
password=pass.getText().toString().trim();
queryexct="SELECT * FROM `user_registration` WHERE `email_id` = '"+username+"' AND `password` = '"+password+"'";
rs = st.executeQuery(queryexct);
Log.v("queryexct","queryexct");
temqfag=false;
} catch (SQLException e) {
e.printStackTrace();
con = null;
}
try {
Log.v("test#######","errorrrrrrrrrrr3");
if (temqfag) {Thread.sleep(10);}
} catch (InterruptedException e) {
e.printStackTrace();
}}
} else {
try {
Log.v("test#######","errorrrrrrrrrrr4");
Thread.sleep(300);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
});
Log.v("out of loop","out of loop");
if(rs!=null){
if (rs.next()) {
Log.v("test#######","errorrrrrrrrrrr1");
Looper.prepare();
Thread.interrupted();
setContentView(R.layout.activity_main1);
Log.v("test#######","errorrrrrrrrrrr1");
}
else{
Log.v("test#######","errorrrrrrrrrrr2");
Thread.interrupted();
Looper.prepare();
dialog.setMessage("Your username and password are not valid");
dialog.show();
}
}
temqfag=true;
}
}
i didn't exactly get what are you trying but from what i understand if you are trying to change the layout using threads then you won't be able to do that because it is only possible on main thread.
The setContentView is a function of your activity.
So you need to invoke it like this from other funciton:
MainActivity.this.setContentView(R.layout.activity_main1);
Related
so I am developing an app to take in a file and upload it to an FTP server, but i keep getting android.os.NetworkOnMainThreadException. Any ideas on how to fix this?
This is my code
public void sendData() throws Exception {
FTPUploader stuff = new FTPUploader("xxx","xxx","xxx");
stuff.doInBackground();
}
FTPUploader Class:
import android.os.AsyncTask;
import org.apache.commons.net.ftp.FTPClient;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.net.InetAddress;
public class FTPUploader extends AsyncTask<String, Void, Void> {
//#Override
protected Void doInBackground(String... params) {
FTPClient con = new FTPClient();
try {
con.connect(InetAddress.getByName(params[0]));
if (con.login(params[1], params[2])) {
con.enterLocalPassiveMode();
String data = params[3];
ByteArrayInputStream in = new ByteArrayInputStream(data.getBytes());
boolean result = con.storeFile(params[4], in);
in.close();
if (result) {
System.out.println("upload result: " + result);
}
}
} catch (Exception e) {
e.printStackTrace();
}
try {
con.logout();
con.disconnect();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
}
You would need to call from your main activity or class instead of doInBackground ()
new FTPUploader().execute(param1,param2,param3);
i have my code that sucessfuly send my client message to server.. can anyone help pls ? i'm new in socket programming. i want to establish a server that sends the message of my android client to other android client... here is my code
CLIENT ANDROID :
package com.example.websocketclient;
import java.io.BufferedWriter;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.Socket;
import java.net.UnknownHostException;
import android.os.AsyncTask;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
public class Chatroom extends Activity {
public static String msgToServer = null;
TextView uname;
EditText in;
Button snd;
TextView out;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_chatroom);
uname = (TextView) findViewById(R.id.textViewmynam);
in = (EditText) findViewById(R.id.editTextInput);
snd = (Button) findViewById(R.id.buttonSend);
out = (TextView) findViewById(R.id.textViewOutput);
Bundle bundle = getIntent().getExtras();
String urname = bundle.getString("myname");
uname.setText(urname);
MyClientTask clientTask = new MyClientTask();
clientTask.execute();
}
public class MyClientTask extends AsyncTask<Void, Void, Void> {
#Override
protected Void doInBackground(Void... arg0) {
connect();
return null;
}
}
public void connect() {
Socket sock;
int[] allports = {1111,1919,2020};
int portnum;
for(int i=1;i<allports.length;i++) {
try {
portnum = allports[i];
boolean socketno = Middleware.available(portnum);
String ad = "192.168.149.1";
if(socketno = true) {
sock = new Socket(ad,portnum);
while(socketno) {
sendmsg(sock);
}//while
// sock.close();
}//if
}catch (UnknownHostException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
public void sendmsg (final Socket s) {
snd.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View arg0) {
//boolean listening = true;
String inmsg = ""+in.getText().toString();
String response = "";
msgToServer = inmsg;
//out.append("you:"+msgToServer+"\n");
try {
DataOutputStream outToServer = new DataOutputStream(s.getOutputStream());
DataInputStream inToServer = new DataInputStream(s.getInputStream());
if(outToServer != null){
outToServer.writeBytes(msgToServer+"\n");
}
}
catch (Exception e) {
}
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.chatroom, menu);
return true;
}
}
Here is my PC Server side :
package Server;
import java.net.*;
import java.io.*;
import java.util.Scanner;
import java.net.ServerSocket;
import java.net.Socket;
import java.sql.*;
public class SocketServer extends Thread {
final static int _portNumber = 1919; //Arbitrary port number
public static void main(String[] args)
{
try {
new SocketServer().startServer();
} catch (Exception e) {
System.out.println("I/O failure: " + e.getMessage());
}
}
public void startServer() throws Exception {
ServerSocket serverSocket = null;
boolean listening = true;
try {
serverSocket = new ServerSocket(_portNumber);
} catch (IOException e) {
System.err.println("Could not listen on port: " + _portNumber);
System.exit(-1);
}
while (listening) {
System.out.println("Huwat huwat kang client..!");
handleClientRequest(serverSocket);
}
serverSocket.close();
}
private void handleClientRequest(ServerSocket serverSocket) {
try {
new Thread(new ConnectionRequestHandler(serverSocket.accept())).start();
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* Handles client connection requests.
*/
public class ConnectionRequestHandler implements Runnable{
private Socket _socket;
private PrintWriter _out;
private BufferedReader _in;
public ConnectionRequestHandler(Socket socket) {
_socket = socket;
}
public void run() {
String info;
int maxid;
System.out.println("Client connected to socket: " + _socket.toString());
info = _socket.toString();
//incrementing the msg_id
try {
BufferedWriter out = new BufferedWriter(new OutputStreamWriter(
_socket.getOutputStream()));
_in = new BufferedReader(new InputStreamReader(_socket.getInputStream()));
String inputLine;
Class.forName("com.mysql.jdbc.Driver");
Connection con = DriverManager.getConnection("jdbc:mysql://localhost/finalclient","root","");
PreparedStatement st = con.prepareStatement("select *from msgs order by msg_id desc");
ResultSet r1 = st.executeQuery();
r1.first(); // or r1.next()
maxid = r1.getInt("msg_id") + 1;
while ((inputLine = _in.readLine()) != null) {
System.out.println("Message from Client: "+inputLine);
out.write(inputLine);
try {
PreparedStatement st1=con.prepareStatement("insert into msgs values(?,?,?)");
st1.setInt(1,maxid);
st1.setString(2,info);
st1.setString(3,inputLine);
int count = st1.executeUpdate ();
System.out.println (count + " rows were inserted to Database");
}
catch (Exception e) {
System.out.println("Failed to Insert from DB"+e);
}
}
}
catch (Exception e) {
System.out.println("Failed to Select from DB"+e);
}
}
}
}
I am trying to test this script, to get print some demo text to my Zebra printer using Android, but I am getting a java.lang.NullPointerException. I have read is something about an initialization, but I can't identify what is the object to initializate.
this is the error:
E/AndroidRuntime(2098):
FATAL EXCEPTION: Thread-9874
Process: com.stihn.sibmovil, PID: 2098
java.lang.NullPointerException
at com.stihn.sibmovil.sendfile.SibPrint.testSendFile(SibPrint.java:88)
at com.stihn.sibmovil.sendfile.SibPrint.access$0(SibPrint.java:86)
at com.stihn.sibmovil.sendfile.SibPrint$1.run(SibPrint.java:53)
at java.lang.Thread.run(Thread.java:841)
Thanks for your help!
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import android.os.Looper;
import com.stihn.sibmovil.util.SettingsHelper;
import com.zebra.sdk.comm.BluetoothConnection;
import com.zebra.sdk.comm.Connection;
import com.zebra.sdk.comm.ConnectionException;
import com.zebra.sdk.printer.ZebraPrinter;
import com.zebra.sdk.printer.ZebraPrinterFactory;
import com.zebra.sdk.printer.ZebraPrinterLanguageUnknownException;
import org.apache.cordova.api.Plugin;
import org.apache.cordova.api.PluginResult;
import com.zebra.sdk.printer.PrinterLanguage;
import org.json.JSONArray;
import org.json.JSONException;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Context;
public class SibPrint extends Plugin {
ProgressDialog loadingDialog;
Activity activity;
private Context context;
String macAddress;
String filepath;
public PluginResult execute(String action, JSONArray args, String callbackId) {
try {
if (action.equals("sibPrintTicket")) {
String echo = args.getString(0);
filepath = args.getString(1);
macAddress = args.getString(2);
if (echo != null && echo.length() > 0) {
new Thread(new Runnable() {
public void run() {
Looper.prepare();
Connection connection = null;
connection = new BluetoothConnection(macAddress);
try {
System.out.println("Imprimiendo ...");
connection.open();
ZebraPrinter printer = ZebraPrinterFactory
.getInstance(connection);
testSendFile(printer);
connection.close();
} catch (ConnectionException e) {
System.out.println("Error Try 1 "
+ e.getMessage());
} catch (ZebraPrinterLanguageUnknownException e) {
System.out.println("Error Catch 1 "
+ e.getMessage());
} finally {
if (activity != null && loadingDialog != null) {
loadingDialog.dismiss();
}
}
Looper.loop();
Looper.myLooper().quit();
}
}).start();
//retornar mensaje de imprimiendo
return new PluginResult(PluginResult.Status.OK, "Imprimiendo..");
} else {
return new PluginResult(PluginResult.Status.ERROR);
}
} else {
return new PluginResult(PluginResult.Status.INVALID_ACTION);
}
} catch (JSONException e) {
return new PluginResult(PluginResult.Status.JSON_EXCEPTION);
}
}
private void testSendFile(ZebraPrinter printer) {
try {
File filepath = context.getFileStreamPath("TEST.LBL");
createDemoFile(printer, "TEST.LBL");
printer.sendFileContents(filepath.getAbsolutePath());
this.saveBluetoothAddress(this, macAddress);
} catch (ConnectionException e1) {
System.out.println("Error sending file to printer" + e1.getMessage());
} catch (IOException e) {
System.out.println("Error creating file" + e.getMessage());
}
}
private void saveBluetoothAddress(SibPrint sibPrint,
String macAddress) {
// TODO Auto-generated method stub
}
private void createDemoFile(ZebraPrinter printer, String fileName) throws IOException {
FileOutputStream os = context.openFileOutput(fileName, Context.MODE_PRIVATE);
byte[] configLabel = null;
PrinterLanguage pl = printer.getPrinterControlLanguage();
if (pl == PrinterLanguage.ZPL) {
configLabel = "^XA^FO17,16^GB379,371,8^FS^FT65,255^A0N,135,134^FDTEST^FS^XZ".getBytes();
} else if (pl == PrinterLanguage.CPCL) {
String cpclConfigLabel = "! 0 200 200 406 1\r\n" + "ON-FEED IGNORE\r\n" + "BOX 20 20 380 380 8\r\n" + "T 0 6 137 177 TEST\r\n" + "PRINT\r\n";
configLabel = cpclConfigLabel.getBytes();
}
os.write(configLabel);
os.flush();
os.close();
}
}
you got java.lang.NullPointerException in Context
at
File filepath = context.getFileStreamPath("TEST.LBL");
you are not initialize context in your class.
please add
public void SibPrint(Context context){
this.context=context;
}
in your class.
and create consructor in Activity like
SibPrint mSibPrint = new SibPrint(MyActivity.this);
public class SibPrint extends Plugin {
ProgressDialog loadingDialog;
Activity activity;
private Context context;
String macAddress;
String filepath;
//add this method
public void SibPrint(Context context){
this.context=context;
}
.
.
.
}
Try this..
You have not initialize context that's inside testSendFile() method
File filepath = context.getFileStreamPath("TEST.LBL");
you should initialize context before using it otherwise you will get NPE
I'm currently working on writing an App on Android to interface with an Arduino Board. I am able to send serial data to my Arduino just fine, however my app crashes at start up the moment I begin trying to receive data.
I currently have it set so a text field takes data from a user, and sends to the Arduino, Arduino does a function.
For my receive, I am making a new thread at start up to constantly listen for data from the Arduino. whenever the code in this thread is executed, it crashes.
I am using this library as my basis: https://github.com/mik3y/usb-serial-for-android
Below is the all the code pertinent, omitted code for other functionality this app is providing, that are unrealted:
import java.io.IOException;
import java.io.InputStream;
import java.text.DecimalFormat;
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import com.hoho.android.usbserial.driver.UsbSerialDriver;
import android.hardware.usb.UsbManager;
import android.content.Intent;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.content.Context;
import android.util.Log;
import com.hoho.android.usbserial.driver.UsbSerialProber;
public class MainActivity extends Activity implements SensorEventListener, LocationListener{
private EditText sendTextField;
TextView uartRX;
public Handler Handler;
UsbManager manager;
/** Called to create application activity*/
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
uartRX = (TextView)findViewById(R.id.rxUART);
sendTextField = (EditText) findViewById(R.id.sendTextField);
Handler = new Handler() {
#Override public void handleMessage(Message msg) {
String text = (String)msg.obj;
uartRX.append(text);
}
};
Thread t = new Thread(new Runnable() {
public void run()
{
Message msg = new Message();
msg.obj = "Start Serial Listen\n";
Handler.sendMessage(msg);
rxUART();
}
public void rxUART()
{
manager = (UsbManager) getSystemService(Context.USB_SERVICE);
UsbSerialDriver rxDriver = UsbSerialProber.acquire(manager);
if (rxDriver != null) {
try {
rxDriver.open();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
int byteSize = 0;
String data = "";
while(true)
{
byte[] arr = null;
try {
rxDriver.setBaudRate(115200);
rxDriver.read(arr, byteSize);
data = new String(arr);
Message msg = new Message();
msg.obj = data;
Handler.sendMessage(msg);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
});
t.start();
}
public void sendUART(String data)
{
manager = (UsbManager) getSystemService(Context.USB_SERVICE);
// Find the first available driver.
UsbSerialDriver driver = UsbSerialProber.acquire(manager);
if (driver != null) {
try {
driver.open();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
try {
driver.setBaudRate(115200);
byte buffer[] = new byte[16];
int numBytesRead = driver.read(buffer, 1000);
Log.d(TAG, "Read " + numBytesRead + " bytes.");
byte temp[] = data.getBytes();
driver.write(temp, 16);
} catch (IOException e) {
// Deal with error.
} finally {
try {
driver.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
public void onClickSendBtn(View v)
{
String data = "";
data = sendTextField.getText().toString();
sendUART(data);
sendTextField.setText(" ");
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
Can anyone help me figure out why the app crashes on the code created in the thread?
Note: the code also crashes when not in a thread. Code was originally a function called by sendUART() to check for a response. no while(true) either.
Logcat:
11-02 09:49:22.988: E/AndroidRuntime(22652): FATAL EXCEPTION: Thread-964
11-02 09:49:22.988: E/AndroidRuntime(22652): java.lang.NullPointerException
11-02 09:49:22.988: E/AndroidRuntime(22652): at com.example.sensortest.MainActivity$2.rxUART(MainActivity.java:143)
11-02 09:49:22.988: E/AndroidRuntime(22652): at com.example.sensortest.MainActivity$2.run(MainActivity.java:119)
11-02 09:49:22.988: E/AndroidRuntime(22652): at java.lang.Thread.run(Thread.java:856)
The line numbers referenced are:
Thread t = new Thread(new Runnable() {
public void run()
{
Message msg = new Message();
msg.obj = "Start Serial Listen\n";
Handler.sendMessage(msg);
rxUART();
}
public void rxUART()
{
manager = (UsbManager) getSystemService(Context.USB_SERVICE);
UsbSerialDriver rxDriver = UsbSerialProber.acquire(manager);
if (rxDriver != null) {
try {
rxDriver.open();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
int byteSize = 0;
String data = "";
while(true)
{
byte[] arr = null;
try {
rxDriver.setBaudRate(115200);
rxDriver.read(arr, byteSize);
data = new String(arr);
Message msg = new Message();
msg.obj = data;
Handler.sendMessage(msg);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
});
t.start();
You don't handle the case rxDriver == null in rxUart() correctly.
The if() statement skips the open() call only, but the while() loop gets executed with rxDriver being NULL resulting in NPE. You have the same problem in `sendUART(), btw.
Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers.
This question was caused by a typo or a problem that can no longer be reproduced. While similar questions may be on-topic here, this one was resolved in a way less likely to help future readers.
Closed 6 years ago.
Improve this question
Im' writing a sample chat program that sends message between 2 android phones, so I wrote the following and let a phone connect to itself(10.0.2.2 or localhost) to test it the code works or not.
But looks like in the thread of receivemsg(), the socket is never connected. So did I use the wrong ip address to refer to myself? or does my code have something wrong? thank you for your help!
package com.example.chatroomprogram;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.UnknownHostException;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
public class ClientActivity extends Activity {
private Handler handler = new Handler();
public ListView msgView;
public ArrayAdapter<String> msgList;
// public ArrayAdapter<String> msgList=new ArrayAdapter<String>(this,
// android.R.layout.simple_list_item_1);;
public String ipaddress;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_client);
Intent intent = getIntent();
ipaddress=intent.getStringExtra("ipaddress");
Log.i("123","ip is "+ipaddress);
msgView = (ListView) findViewById(R.id.listView);
msgList = new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1);
msgView.setAdapter(msgList);
// msgView.smoothScrollToPosition(msgList.getCount() - 1);
Button btnSend = (Button) findViewById(R.id.btn_Send);
receiveMsg();
btnSend.setOnClickListener(new View.OnClickListener() {
#SuppressLint("NewApi")
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
final EditText txtEdit = (EditText) findViewById(R.id.txt_inputText);
//msgList.add(txtEdit.getText().toString());
sendMessageToServer(txtEdit.getText().toString());
msgView.smoothScrollToPosition(msgList.getCount() - 1);
}
});
// receiveMsg();
//----------------------------
//server msg receieve
//-----------------------
//End Receive msg from server//
}
public void sendMessageToServer(String str) {
final String str1=str;
new Thread(new Runnable() {
#Override
public void run() {
//String host = "opuntia.cs.utep.edu";
//String host="10.0.";
String host2 = "10.0.2.2";
PrintWriter out = null;
Socket socket = null;
try {
socket = new Socket("10.0.2.2", 8008);
} catch (UnknownHostException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
out = new PrintWriter(socket.getOutputStream());
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Log.i("123","not null");
// out.println("hello");
out.println(str1);
Log.i("123", "hello");
out.flush();
}
}).start();
}
public void receiveMsg()
{
new Thread(new Runnable()
{
#Override
public void run() {
// TODO Auto-generated method stub
//final String host="opuntia.cs.utep.edu";
final String host="10.0.2.2";
//final String host="127.0.0.1";
Socket socket = null ;
BufferedReader in = null;
try {
//socket = new Socket(host,8008);
ServerSocket ss = new ServerSocket(8008);
socket = ss.accept();
} catch (UnknownHostException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
while(true)
{
String msg = null;
try {
msg = in.readLine();
Log.i("123","MSGGG: "+ msg);
//msgList.add(msg);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
if(msg == null)
{
break;
}
else
{
displayMsg(msg);
}
}
}
}).start();
}
public void displayMsg(String msg)
{
final String mssg=msg;
handler.post(new Runnable() {
#SuppressLint("NewApi")
#Override
public void run() {
// TODO Auto-generated method stub
msgList.add(mssg);
msgView.setAdapter(msgList);
msgView.smoothScrollToPosition(msgList.getCount() - 1);
Log.i("123","hi");
}
});
}
}
update: Problem solved, conclusion: if you use AVD, just use 10.0.2.2; if you use an actual phone to debug, you can use localhost
my bad... i used 10.0.2.2 and it works...