What is Searchable configuration, searchable activity?

1. Through Android's official documentation for setting up search interface, I came across this various procedure of creating a searchable configuration, searchable activity, ACTION_SEARCH!

2. I'm new to android development, I'm having a tough time in understanding all these concepts, Can someone explain the above procedure in simple terms?

Well, It's easy. First, Read the Creating a Search Interface. Second, Starts from here by adding an xml in the res/xml/ project directory.

Then, You'll need to create a Searchable Activity by following link:

Creating a Searchable Activity

After creating the Searchable Activity, You'll need to declare it on AndroidManifest.xml, Just add the following to your SearchableActivity:

<activity android:name=".SearchableActivity" >
        <intent-filter>
            <action android:name="android.intent.action.SEARCH" />
        </intent-filter>
        <meta-data android:name="android.app.searchable"
                   android:resource="@xml/searchable"/>
    </activity>

After all these, Read this : PerformingSearch And Receive the query from your Activity when user do the searches(Like MainActivity to SearchableActivity).

Inflate the XML menu resource (res/menu/options_menu.xml) in the onCreateOptionsMenu() method of your activity:and getMenu Item .Write following code

MenuItem searchItem=menu.findItem(R.id.searchMenu);
SearchView searchView=(SearchView)                
MenuItemCompat.getActionView(searchItem);

searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
    @Override
     public boolean onQueryTextSubmit(String query) {
           Toast.makeText(MainActivity.this, ""+query,     
    Toast.LENGTH_SHORT).show();
    return false;
}