Hi,
This is my activity. I am just trying to write data to a file and again
reading the same file as a RandomAccessFile.
Some time the code is working fine but some time it is showing
----- [ D/SntpClient(61): request time failed: java.net.SocketException:
Address family not supported by protocol].---
Plz help me. Thanks in advance.
This is the code
----------------------------------------------
package nihar.rajesh.records;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.io.Serializable;
import java.net.SocketException;
import android.app.Activity;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.widget.TextView;
@SuppressWarnings("serial")
public class StudentsOutput extends Activity implements Serializable{
TextView roll,name,addr,mob,email;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.studentoutput);
roll = (TextView)findViewById(R.id.textRollno);
name = (TextView)findViewById(R.id.textName);
addr = (TextView)findViewById(R.id.textAddr);
mob = (TextView)findViewById(R.id.textMob);
email = (TextView)findViewById(R.id.textEmail);
StudentRecord stdrecord= new StudentRecord();
stdrecord =(StudentRecord)
getIntent().getExtras().get("StudentDetails");
// Toast.makeText(this, stdrecord.roll, Toast.LENGTH_SHORT).show();
roll.setText("Roll No: "+ stdrecord.roll);
name.setText("Name: "+stdrecord.name);
addr.setText("Address: "+stdrecord.addr);
mob.setText("Mob: "+stdrecord.mob);
email.setText("Email: "+stdrecord.email);
//Creating the file
String filename = "Student.txt";
File file = new File(Environment.getExternalStorageDirectory(),
filename);
FileOutputStream fos;
//creating the byte array
if( stdrecord.toSring().length()!= 80)
{
StringBuilder tmp= new StringBuilder();
tmp.append(stdrecord.toSring());
int len=stdrecord.toString().length();
System.out.print(len);
for (int i=0;i<(80-len); i++)
{
tmp.append(" ");
}
// Creating the byte array
byte[] data = tmp.toString().getBytes();
try {
fos = new FileOutputStream(file,false);
fos.write(data);
fos.flush();
fos.close();
}
catch (FileNotFoundException e)
{
// handle exception
}
catch (IOException e)
{
// handle exception
}
}
/* try{
// Create file
FileWriter fstream = new FileWriter("Student.txt",true);
BufferedWriter out = new BufferedWriter(fstream);
out.write("Hello Java");
//Close the output stream
out.close();
}catch (Exception e){//Catch exception if any
System.err.println("Error: " + e.getMessage());
}
}*/
// Reading the file in Random access form
RandomAccessFile access=null;
try
{
access = new RandomAccessFile(file,"r");
System.out.println("FilePinter:"+access.getFilePointer());
System.out.println("Read full line: " + access.readLine());
System.out.println("FilePinter:"+access.getFilePointer());
}
catch (FileNotFoundException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
catch(SocketException ex)
{
Log.e("Error : " , "Error on soapPrimitiveData() " +
ex.getMessage());
ex.printStackTrace();
}
catch (IOException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
finally
{
try {
access.close();
}
catch (IOException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}}
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