root/trunk/21.FileRWTest/src/soo/data/file/io/FileRWTest.java

package soo.data.file.io;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;

import org.apache.http.message.BufferedHeader;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;

public class FileRWTest extends Activity {
    private static final String F_NAME = "test2.txt";
        /** Called when the activity is first created. */
        EditText et;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        et = (EditText)findViewById(R.id.editText01);
        final Button b1 = (Button)findViewById(R.id.button01);
        final Button b2 = (Button)findViewById(R.id.button02);
        final Button b3 = (Button)findViewById(R.id.button03);
        
        //����쎄린
        b1.setOnClickListener(new OnClickListener() {
                        
                        @Override
                        public void onClick(View v) {
                                // TODO Auto-generated method stub
                                fRead();
                        }
                });
        
        //����곌린
        b2.setOnClickListener(new OnClickListener() {
                        
                        @Override
                        public void onClick(View v) {
                                // TODO Auto-generated method stub
                                fWrite();
                        }
                });
        
        b3.setOnClickListener(new OnClickListener() {
                        
                        @Override
                        public void onClick(View v) {
                                // TODO Auto-generated method stub
                                finish();
                        }
                });
    }
    @Override
    public void onResume(){
        super.onResume();
        fRead();
    }
    
    @Override
    public void onPause(){
        super.onPause();
        fWrite();
    }
    
        protected void fWrite() {
                // TODO Auto-generated method stub
                OutputStream os = null;
                PrintWriter pw=null;
                try{
                        os = this.openFileOutput(F_NAME, this.MODE_PRIVATE);
                        pw = new PrintWriter(os,true);
                        pw.write(et.getText().toString()+"\n");
                }catch(IOException ie){
                        Log.e("fWrite()",ie.toString());
                }finally{
                        try{
                                if(pw !=null) pw.close();
                                if(os !=null) os.close();
                        }catch(IOException ie2){}
                }
        }
        
        protected void fRead() {
                // TODO Auto-generated method stub
                InputStream is = null;
                InputStreamReader isr = null;
                BufferedReader br = null;
                try{
                        is = openFileInput(F_NAME);
                        if(is !=null){
                                isr = new InputStreamReader(is);
                                br = new BufferedReader(isr);
                                String str = null;
                                StringBuffer sb = new StringBuffer();
                                
                                while((str =br.readLine()) !=null){
                                        sb.append(str+"\n");
                                }
                                et.setText(sb.toString());
                        }
                }catch(IOException ie){
                        Log.e("fRead()",ie.toString());
                }finally{
                        try{
                                if(br !=null) br.close();
                                if(isr !=null) isr.close();
                                if(is !=null) is.close();
                        }catch(IOException ie){}
                }
        }
}