Thursday, 1 November 2012

Shared Preference Example which stores data locally and displays in other activity

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);
               
            }
        });
    }
  
}



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);
       
    }

}

Sample1.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>


Sample output of first screen

 

 Sample output of second screen 

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