CREATE SHARED PREFERENCES IN ANDROID

  JAVA CODE OF SHARED PREFERENCES:-


package com.javacodegeeks.android.androidsharedpreferences;

import android.app.Activity;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;

public class MainActivity extends Activity implements OnClickListener {

    CheckBox checkBox;
    EditText editText;
    Button button;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        checkBox = (CheckBox) findViewById(R.id.checkBox1);
        editText = (EditText) findViewById(R.id.editText1);
        button = (Button) findViewById(R.id.button1);
        button.setOnClickListener(this);
        loadSavedPreferences();
    }

    private void loadSavedPreferences() {
       
        SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(this);
       
        boolean cbValue = sp.getBoolean("CHECKBOX", false);
       
        String name = sp.getString("NAME", "YourName");
       
        if (cbValue) {
            checkBox.setChecked(true);
        } else {
            checkBox.setChecked(false);
        }

        editText.setText(name);
    }

    private void savePreferences(String key, boolean value) {
        SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(this);
        Editor edit = sp.edit();
        edit.putBoolean(key, value);
        edit.commit();
    }

    private void savePreferences(String key, String value) {
        SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(this);
        Editor edit = sp.edit();
        edit.putString(key, value);
        edit.commit();
    }

    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub
        savePreferences("CHECKBOX", checkBox.isChecked());
        if (checkBox.isChecked())
            savePreferences("NAME", editText.getText().toString());

        finish();
    }

}



XML CODE OF SHARED PREFERENCES:-


<LinearLayout 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:orientation="vertical"
    tools:context=".MainActivity" >

    <CheckBox
        android:id="@+id/checkBox1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Check Box" />

    <EditText
        android:id="@+id/editText1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Enter Your Name...">

        <requestFocus />
    </EditText>

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

</LinearLayout>


MANIFEST FILE CODE:-


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

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="17" />

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

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>


STRING XML CODE:-


<?xml version="1.0" encoding="utf-8"?>
<resources>

    <string name="app_name">AndroidSharedPreferences</string>
    <string name="action_settings">Settings</string>
    <string name="hello_world">Hello world!</string>

</resources>