This is main xml file which display list

activity_main.xml

<RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.aks.serchablelist.MainActivity" >

    
    <EditText
        android:id="@+id/searchView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/listadapter"
         android:layout_alignStart="@+id/listadapter"
        android:layout_alignParentTop="true"
        android:padding="5dp"
        android:textSize="22sp"
        android:hint="@string/search_here"
       />
    <ListView
        android:layout_below="@+id/searchView"
        android:id="@+id/listadapter"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >
    </ListView>
    

</RelativeLayout>