Android Tutorials: Store Data in Mobile Memory using SharedPreference

Click Here to download source code

Package Name : selva.shared

Project Name : SharedPreferences

Version : 1.5 ( Support 1.5 and above versions)

main.xml

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

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="@string/hello" />

    <Button
        android:id="@+id/button1"
        android:layout_width="98dp"
        android:layout_height="wrap_content"
        android:text="Save" />

</LinearLayout>

m1.xml

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

    <Button
        android:id="@+id/button"
        android:layout_width="140dp"
        android:layout_height="wrap_content"
        android:text="View Saved Data" />

</LinearLayout>

SharedPreferencesActivity.java

package selva.shared;

import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class SharedPreferencesActivity extends Activity
{
    public SharedPreferences prefs;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        Button btn=(Button) findViewById(R.id.button1);

      btn.setOnClickListener(new View.OnClickListener()
      {

        @Override
        public void onClick(View v)
        {
            // TODO Auto-generated method stub

               String str="www.androidprogramz.in";
                int no=234;
                float fno=234.234f;

                prefs = getSharedPreferences("detail", MODE_PRIVATE);

                      // detail is sharedpreference name
                SharedPreferences.Editor editor = prefs.edit();

                editor.putString("Urlname",str);

// To save str value in Urlname
editor.putInt("Intvalue", no);

       // To save no value in Intvalue
                editor.putFloat("Floatvalue", fno);
                // To save fno value in Floatvalue
                editor.commit();


            Intent i=new Intent(SharedPreferencesActivity.this,Anotheractivity.class);
            startActivity(i);

        }
    });


    }
}

Anotheractivity.java

package selva.shared;

import android.app.Activity;
import android.content.SharedPreferences;
import android.graphics.Color;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.TextView;

public class Anotheractivity extends Activity
{
    public SharedPreferences prefs;

    public void onCreate(Bundle savedInstanceState)
        {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.m1);

            Button btn=(Button) findViewById(R.id.button);

             prefs = getSharedPreferences("detail", MODE_PRIVATE);

               final String name=prefs.getString("Urlname", "novalue");

// To get name value from Urlname
final int val=prefs.getInt("Intvalue", 0);

                       // To get val value from Intvlue
               final float fval=prefs.getFloat("Floatvalue", 0);
                      // To get fval value from Floatvalue
            btn.setOnClickListener(new View.OnClickListener()
            {

                @Override
                public void onClick(View v)
                {
                    // TODO Auto-generated method stub
                LinearLayout l=(LinearLayout) findViewById(R.id.linearlayout);

                TextView tv=new TextView(Anotheractivity.this);
                tv.setText(name);
                tv.setTextColor(Color.GREEN);
                l.addView(tv);

                TextView tv1=new TextView(Anotheractivity.this);
                tv1.setText(Integer.toString(val));
                tv1.setTextColor(Color.GREEN);
                l.addView(tv1);

                TextView tv2=new TextView(Anotheractivity.this);
                tv2.setText(Float.toString(fval));
                tv2.setTextColor(Color.GREEN);
                l.addView(tv2);


                }
            });


        }

}

note : to clear sharedpreference

prefs = getSharedPreferences("detail", MODE_PRIVATE);

                SharedPreferences.Editor editor = prefs.edit();

editor.clear(); // to clear all values in detail

editor.commit();

note 1: to remove one particular value

prefs = getSharedPreferences("detail", MODE_PRIVATE);

                SharedPreferences.Editor editor = prefs.edit();

editor.remove("Urlname"); // to remove paricular value from detail

editor.commit();

AndroidManifest.xml

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

    <uses-sdk android:minSdkVersion="3" />

    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name" >
        <activity
            android:label="@string/app_name"
            android:name=".SharedPreferencesActivity" >
            <intent-filter >
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
             android:label="@string/app_name"
             android:name=".Anotheractivity">
            <intent-filter>
                <category android:name="android.intent.category.DEFAULT"/>
            </intent-filter>
        </activity>
    </application>

</manifest>