I’m doing a lan chat app bewteen android (client) and pc (java_server) both running on eclipse.The problem is android very untable and very often crash, however, its running very well on my java version of client and server. please help!
there is my code:
package android.client;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.Socket;
import java.net.UnknownHostException;
import java.util.PriorityQueue;
import java.util.Queue;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
public class Chat_client extends Activity implements Runnable {
private Socket socket = null;
//private Thread thread = null;
private DataOutputStream requestOut;
private int clientID;
private String playerName;
private DataInputStream requestIn;
private EditText text;
private ListView msgView;
private ArrayAdapter<String> msgArrayAdapter;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
try {
socket = new Socket("192.168.2.2", 5558);
Toast.makeText(this,
"Connected to " + this.socket.getInetAddress(),
Toast.LENGTH_LONG + 10).show();
this.playerName = "wei";
this.clientID = socket.getLocalPort();
requestOut = new DataOutputStream(socket.getOutputStream());
requestIn = new DataInputStream(socket.getInputStream());
text = (EditText) findViewById(R.id.editText1);// black textfield
msgArrayAdapter = new ArrayAdapter<String>(this, R.layout.message);
msgView = (ListView) findViewById(R.id.in);
msgView.setAdapter(this.msgArrayAdapter);
new Thread(this).start();
} catch (UnknownHostException uke) {
Toast.makeText(this, "Host unknown:" + uke.getMessage(),
Toast.LENGTH_LONG).show();
} catch (IOException ioe) {
Toast.makeText(this, "Unexpected exception: " + ioe.getMessage(),
Toast.LENGTH_LONG).show();
}
}
// This method is called at button click because we assigned the name to the
// "On Click property" of the button
public void myClickHandler(View v) {
Toast.makeText(this, "sending", Toast.LENGTH_LONG/2).show();
TextView view = (TextView) findViewById(R.id.editText1);
String message = view.getText().toString();
text.setText("");
Packet p;
if (message.startsWith("#")) {
p = new Packet(playerName, 1, clientID,message.substring(1, message.length()));
}
else
p = new Packet(playerName, -1, clientID,message);
try {
this.requestOut.writeUTF(p.convertToSendFormat());
requestOut.flush();
} catch (IOException e) {
e.printStackTrace();
}
msgArrayAdapter.add("Me: <" + message + ">");
}
public void run() {
while (true) {
String r;
try {
r = this.requestIn.readUTF();
if (r != null) {
Packet p = convert(r);
if (p != null)
handle(p);
}
} catch (IOException ioe) {
System.exit(0);
}
}
}
private synchronized Packet convert(String n) {
String data = "";
String[] p = n.split(" ", 4);
if (p.length < 4)
return null;
data = p[3];
return new Packet(p[0], Integer.parseInt(p[1]), Integer.parseInt(p[2]),
data);
}
public synchronized void handle(Packet re) {
if (re.getChannelID() == clientID){
msgArrayAdapter.add("Me" + re.toString());}
else{
msgArrayAdapter.add(re.getSenderName() + re.toString());
}
}
}
package android.client;
import java.io.Serializable;
/**
* This class handles the networking packet
* @author Wei
*/
public class Packet implements Serializable {
private static final long serialVersionUID = 1509287973845358190L;
private String senderName;
private int actionID;
private long channelID;
private int sent;
private String data;
public Packet(String name, int actionID,int cid, String action2) {
this.senderName=name;
this.channelID = cid;
this.actionID = actionID;
this.data = action2;
this.sent = -1;
}
public String getSenderName(){
return this.senderName;
}
public int getActionID(){
return this.actionID;
}
public String getData(){
return this.data;
}
protected void setChannelID(int id){
this.channelID = id;
}
public long getChannelID(){
return this.channelID;
}
protected void setSent(boolean b){
if(b)
this.sent = 1;
else
this.sent=-1;
}
protected int checkSent(){
return this.sent;
}
public String toString(){
return (" : "+this.data);
}
public void addTimeStamp(String time){
this.data+=time;
}
public String convertToSendFormat(){
return this.senderName+" "+this.actionID+" "+this.channelID+" "+this.data;
}
public int getFlag() {
return 0;
}
public void setFlag(boolean response) {
}
}
there is the Log:
10-12 12:54:22.763: DEBUG/AndroidRuntime(360): >>>>>>>>>>>>>> AndroidRuntime START <<<<<<<<<<<<<<
10-12 12:54:22.763: DEBUG/AndroidRuntime(360): CheckJNI is ON
10-12 12:54:22.895: DEBUG/AndroidRuntime(360): --- registering native functions ---
10-12 12:54:23.513: INFO/ActivityManager(59): Force stopping package android.client uid=10033
10-12 12:54:23.513: INFO/ActivityManager(59): Starting activity: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=android.client/.Chat_client }
10-12 12:54:23.633: DEBUG/AndroidRuntime(360): Shutting down VM
10-12 12:54:23.645: INFO/ActivityManager(59): Start proc android.client for activity android.client/.Chat_client: pid=366 uid=10033 gids={3003}
10-12 12:54:23.664: DEBUG/jdwp(360): Got wake-up signal, bailing out of select
10-12 12:54:23.664: DEBUG/dalvikvm(360): Debugger has detached; object registry had 1 entries
10-12 12:54:24.024: WARN/ActivityThread(366): Application android.client is waiting for the debugger on port 8100...
10-12 12:54:24.044: INFO/System.out(366): Sending WAIT chunk
10-12 12:54:24.054: INFO/dalvikvm(366): Debugger is active
10-12 12:54:24.244: INFO/System.out(366): Debugger has connected
10-12 12:54:24.244: INFO/System.out(366): waiting for debugger to settle...
10-12 12:54:24.444: INFO/System.out(366): waiting for debugger to settle...
10-12 12:54:24.644: INFO/System.out(366): waiting for debugger to settle...
10-12 12:54:24.843: INFO/System.out(366): waiting for debugger to settle...
10-12 12:54:25.053: INFO/System.out(366): waiting for debugger to settle...
10-12 12:54:25.254: INFO/System.out(366): waiting for debugger to settle...
10-12 12:54:25.454: INFO/System.out(366): waiting for debugger to settle...
10-12 12:54:25.654: INFO/System.out(366): waiting for debugger to settle...
10-12 12:54:25.866: INFO/System.out(366): waiting for debugger to settle...
10-12 12:54:26.075: INFO/System.out(366): waiting for debugger to settle...
10-12 12:54:26.284: INFO/System.out(366): debugger has settled (1322)
10-12 12:54:27.544: INFO/ActivityManager(59): Displayed activity android.client/.Chat_client: 3912 ms (total 3912 ms)
10-12 12:54:33.313: DEBUG/dalvikvm(124): GC_EXPLICIT freed 642 objects / 35976 bytes in 203ms
10-12 12:54:38.335: DEBUG/dalvikvm(225): GC_EXPLICIT freed 152 objects / 11144 bytes in 177ms
10-12 12:54:43.384: DEBUG/dalvikvm(261): GC_EXPLICIT freed 249 objects / 11840 bytes in 205ms
10-12 12:55:14.583: WARN/KeyCharacterMap(108): No keyboard for id 0
10-12 12:55:14.583: WARN/KeyCharacterMap(108): Using default keymap: /system/usr/keychars/qwerty.kcm.bin
10-12 12:55:37.295: WARN/dalvikvm(366): threadid=7: thread exiting with uncaught exception (group=0x4001d800)
I have solved the prolbem by adding a handler method:
and of course I have no idea why this works, but its just works.lol, thanks again for the help @Knickedi