Android Shared Preference Example

Android Shared Preference Example

SharedPrefActivity

package com.shared;

import android.app.Activity;

import android.content.Intent;

import android.content.SharedPreferences;

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 SharedprefActivity extends Activity {

private static final String TAG = SharedprefActivity.class.getSimpleName();

private EditText id,name;

private Button bt1;

private SharedPreferences shared;

    /** Called when the activity is first created. */

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.sample1);

        

        id = (EditText)findViewById(R.id.ET1);

        name = (EditText)findViewById(R.id.ET2);

        bt1 = (Button) findViewById(R.id.backbutton);

       shared = getSharedPreferences("shared", 0);

       

        id.setText(shared.getString("id", "novalue"));

        name.setText(shared.getString("name", "noname"));

        bt1.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View v) {

// TODO Auto-generated method stub

Log.i(TAG,"button called" );

String f1,f2;

f1 = id.getText().toString();

f2 = name.getText().toString();

Log.i(TAG,"c log example" +f1+" "+f2);

SharedPreferences.Editor editor = shared.edit();

editor.putString("id", f1);

editor.putString("name",f2 );

editor.commit();

Intent  act = new Intent(v.getContext(),act.class);

startActivity(act);

}

});

    }

   

}

Act.java

package com.shared;

import android.app.Activity;

import android.content.SharedPreferences;

import android.os.Bundle;

import android.widget.EditText;

public class act extends Activity{

@Override

protected void onCreate(Bundle savedInstanceState) {

// TODO Auto-generated method stub

super.onCreate(savedInstanceState);

setContentView(R.layout.act);

SharedPreferences shared;

EditText name = (EditText) findViewById(R.id.ET1);

EditText id = (EditText) findViewById(R.id.ET2);

shared = getSharedPreferences("shared", 0);

String idshared = shared.getString("name", "null");

String nameshared = shared.getString("id", "null");

name.setText(nameshared);

id.setText(idshared);

}

}

Layout

Sample.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:orientation="vertical"

android:layout_width="fill_parent"

    android:layout_height="fill_parent">

     <Button 

    android:id="@+id/backbutton"

    android:text="Back"

    android:layout_width="wrap_content"

    android:layout_height="wrap_content" />

    <LinearLayout

    android:orientation="horizontal"

    android:layout_width="fill_parent"

    android:layout_height="wrap_content">

   <TextView

    android:text="First Name"

    android:layout_width="wrap_content"

    android:layout_height="wrap_content" />

   <EditText

       android:id="@+id/ET1"

    android:width="100px"

    android:layout_width="wrap_content"

    android:layout_height="wrap_content" />

    </LinearLayout>

    <LinearLayout

    android:orientation="horizontal"

    android:layout_width="fill_parent"

    android:layout_height="wrap_content">    

   <TextView

    android:text="Last Name"

    android:layout_width="wrap_content"

    android:layout_height="wrap_content" />

   <EditText

       android:id="@+id/ET2"

    android:width="100px"

    android:layout_width="wrap_content"

    android:layout_height="wrap_content" />

    </LinearLayout> 

</LinearLayout>

Act.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:orientation="vertical"

android:layout_width="fill_parent"

    android:layout_height="fill_parent">

    

    <LinearLayout

    android:orientation="horizontal"

    android:layout_width="fill_parent"

    android:layout_height="wrap_content">

   <TextView

    android:text="First Name"

    android:layout_width="wrap_content"

    android:layout_height="wrap_content" />

   <EditText

       android:id="@+id/ET1"

    android:width="100px"

    android:layout_width="wrap_content"

    android:layout_height="wrap_content" />

    </LinearLayout>

    <LinearLayout

    android:orientation="horizontal"

    android:layout_width="fill_parent"

    android:layout_height="wrap_content">    

   <TextView

    android:text="Last Name"

    android:layout_width="wrap_content"

    android:layout_height="wrap_content" />

   <EditText

       android:id="@+id/ET2"

    android:width="100px"

    android:layout_width="wrap_content"

    android:layout_height="wrap_content" />

    </LinearLayout> 

</LinearLayout>