package com.example.sdcardwriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import android.app.Activity;
import android.os.Bundle;
import android.os.Environment;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
public class SavedatasdcardActivity extends Activity {
/** Called when the activity is first created. */
Button save,load;
EditText message;
TextView t1;
String Message1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
save=(Button) findViewById(R.id.button1);
load=(Button) findViewById(R.id.button2);
message=(EditText) findViewById(R.id.editText1);
t1=(TextView) findViewById(R.id.textView1);
save.setOnClickListener(new View.OnClickListener(){
public void onClick(View v){
//Get message from user store in message1 variable
Message1 =message.getText().toString();
try{
//Create a new folder called MyDirectory in SDCard
File sdcard=Environment.getExternalStorageDirectory();
File directory=new File(sdcard.getAbsolutePath()+"/MyDirectory");
directory.mkdirs();
//Create a new file name textfile.txt inside MyDirectory
File file=new File(directory,"textfile.txt");
//Create File Output stream to read the file
FileOutputStream fou=new FileOutputStream(file);
OutputStreamWriter osw=new OutputStreamWriter(fou);
try{
//write a user data to file
osw.append(Message1);
osw.flush();
osw.close();
Toast.makeText(getBaseContext(),"DataSaved",Toast.LENGTH_LONG).show();
}catch(IOException e){
e.printStackTrace();
}
}catch (FileNotFoundException e){
e.printStackTrace();
}
}
});
load.setOnClickListener(new View.OnClickListener(){
public void onClick(View v){
try{
File sdcard=Environment.getExternalStorageDirectory();
File directory=new File(sdcard.getAbsolutePath()+"/MyDirectory");
File file=new File(directory,"textfile.txt");
FileInputStream fis=new FileInputStream(file);
InputStreamReader isr=new InputStreamReader(fis);
char[] data=new char[100];
String final_data="";
int size;
try{
while((size=isr.read(data))>0)
{
//read a data from file
String read_data=String.copyValueOf(data,0,size);
final_data+=read_data;
data=new char[100];
}
//display the data in output
Toast.makeText(getBaseContext(),"Message:"+final_data,Toast.LENGTH_LONG).show();
}catch(IOException e){
e.printStackTrace();
}
}catch (FileNotFoundException e){
e.printStackTrace();
}
}
});    }  }