Notes

package com.example.sid;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.text.method.ScrollingMovementMethod;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintStream;
import java.net.Socket;

public class tcp extends Activity
{
public Socket ssco;
public BufferedReader sbuff;
public PrintStream sprs;

EditText sedt;
Button sbutn;
TextView stxtv;
Button bu1, nbu2;

int sin;
String ssrng;

class SocketListener implements Runnable
{
String stga;

public void run()
{
try
{
ssco = new Socket (ssrng, sin);
sbuff = new BufferedReader (new InputStreamReader(ssco.getInputStream()));
sprs = new PrintStream (ssco.getOutputStream());
sprs.println("Connection established");

while (true)
{
String s = sbuff.readLine ();
CharSequence cs = stxtv.getText ();
stga = cs + "rn" + s;

stxtv.post(new Runnable()
{
public void run()
{
stxtv.setText(stga);
}
}
);
}
}
catch (IOException e)
{
Log.e(getClass().getName(), e.getMessage());
}
}
}

@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_tcp);

stxtv = findViewById(R.id.vow);
stxtv.setMovementMethod(new ScrollingMovementMethod());

sedt = findViewById(R.id.sbut);


sin = 4444;
ssrng = "192.168.100.5";


bu1 = (Button)findViewById(R.id.savbut);
bu1.setOnClickListener(new View.OnClickListener()
{
public void onClick (View view)
{
String n = stxtv.getText().toString();

FileOutputStream fos;
try
{
fos = openFileOutput ("siddhu.txt", Context.MODE_PRIVATE);
fos.write (n.getBytes(), 0, n.length());
fos.close();
}
catch (FileNotFoundException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
catch (IOException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}

}
}
);

nbu2 = (Button)findViewById(R.id.load);
nbu2.setOnClickListener(new View.OnClickListener()
{
public void onClick (View view)
{
byte[] buffer = new byte[1024];
String s = "";
int n;

FileInputStream fin;
try
{
fin = openFileInput ("siddhu.txt");
do
{
n = fin.read (buffer, 0, 1024);

if ( n != -1)
{
s = s + new String (buffer, 0, n);
}

}
while ((n != -1));
fin.close();

stxtv.setText(s);
}
catch (FileNotFoundException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
catch (IOException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}

}
}
);



Button hat= findViewById(R.id.shdp);
Button hate= findViewById(R.id.xxsopl);

hat.setOnClickListener(new View.OnClickListener()
{

@Override
public void onClick(View v)
{
Intent back = new Intent(tcp.this, Main2Activity.class);
startActivity(back);
}
});

hate.setOnClickListener(new View.OnClickListener()
{

@Override
public void onClick(View v)
{
moveTaskToBack(true);
android.os.Process.killProcess(android.os.Process.myPid());
System.exit(1);
}
});


sbutn = findViewById(R.id.sen);
sbutn.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
new Thread()
{
public void run()
{
String s = sedt.getText().toString();
sprs.println (s);
}
}.start();
}
});

Thread rte = new Thread (new SocketListener ());
rte.start();
}
}