storage data in side off application in to file by using FileInputStream Data Read,Write

1st Activity designe:-
 



<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".Splash" >

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="79dp"
        android:text="Button" />

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignRight="@+id/button1"
        android:layout_below="@+id/button1"
        android:layout_marginTop="49dp"
        android:text="Large Text"
        android:textAppearance="?android:attr/textAppearanceLarge" />

</RelativeLayout>

Second Activity Designe :-


<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <EditText
        android:id="@+id/editText1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:ems="10"
        android:inputType="phone" >

        <requestFocus />
    </EditText>

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="save" />

</LinearLayout>


code FistActivity:-

package abccheck.mars.com;



import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

public class Splash extends Activity {
    String data;
    String file = "mydata";
    TextView score;
    Button btndata;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.splash);
   
      score=(TextView)findViewById(R.id.textView1);
      btndata=(Button)findViewById(R.id.button1);
      FileInputStream fin;
    try {
        fin = openFileInput(file);
        int c;
        String temp = "";
        while ((c = fin.read()) != -1) {
            temp = temp + Character.toString((char) c);
        }
        int k = Integer.parseInt(temp.toString());
        if(k==0)
        {
            score.setText("0");
           
        }
        if (k == 10) {
            Toast.makeText(getApplicationContext(), "hi ",Toast.LENGTH_LONG).show();
            score.setText("10");
           
        }
    } catch (FileNotFoundException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
      btndata.setOnClickListener(new OnClickListener() {
       
        @Override
        public void onClick(View arg0) {
            // TODO Auto-generated method stub
            Intent intent=new Intent(getApplicationContext(),First.class);
            startActivity(intent);
           
        }
    });
     
    }

}

code Second Activity:-
package abccheck.mars.com;



import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

public class Splash extends Activity {
    String data;
    String file = "mydata";
    TextView score;
    Button btndata;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.splash);
   
      score=(TextView)findViewById(R.id.textView1);
      btndata=(Button)findViewById(R.id.button1);
      FileInputStream fin;
    try {
        fin = openFileInput(file);
        int c;
        String temp = "";
        while ((c = fin.read()) != -1) {
            temp = temp + Character.toString((char) c);
        }
        int k = Integer.parseInt(temp.toString());
        if(k==0)
        {
            score.setText("0");
           
        }
        if (k == 10) {
            Toast.makeText(getApplicationContext(), "hi ",Toast.LENGTH_LONG).show();
            score.setText("10");
           
        }
    } catch (FileNotFoundException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
      btndata.setOnClickListener(new OnClickListener() {
       
        @Override
        public void onClick(View arg0) {
            // TODO Auto-generated method stub
            Intent intent=new Intent(getApplicationContext(),First.class);
            startActivity(intent);
           
        }
    });
     
    }

}
manifest code:-

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="abccheck.mars.com"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="18" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="abccheck.mars.com.Splash"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
         <activity
            android:name="abccheck.mars.com.First"
            android:label="@string/app_name" >
            </activity>
    </application>

</manifest>