AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
  <!--
    Applications declare their components (i.e. the activities, services, broadcast receivers, and content providers) in a manifest file that is bundled into the Android package i.e. 
    the .apk file that also holds the application's code, files, and resources. Every application must have an AndroidManifest.xml file (with precisely that name) in its root directory. 
    
    AndroidManifest.xml names the classes that implement each of its components and publishes their capabilities. These declarations enable the Android system identify the components of 
    an application and the conditions under which they must be launched. It determines which processes will host application components.
    
    It also identifies the minimum level of Android API that the application requires. Apart from declaring the application's components, AndroidManifest.xml also does other things like 
    naming any libraries the application needs to be linked against, identifying permissions to granted etc.
  -->
<manifest xmlns:android="http://schemas.android.com/apk/res/android" android:versionCode="1" android:versionName="1.0"
  package="biz.vj.android.application">
  <!-- Java package for the application is named here. The package name serves as a unique identifier for the application.-->


  <application android:icon="@drawable/icon" android:label="@string/app_name">

    <activity android:name=".activity.RedFlashLight" android:label="@string/app_name">
    <!-- 
         The "name" attribute of the <activity> element names the Activity subclass that implements the activity. 
         The "icon" and "label" attributes point to resource files containing an icon and label that can be displayed to users to represent the activity. 
         The android:clearTaskOnLaunch="true" resets the application by clearing the activity's task, every time the user returns to the application. 
    -->
      <intent-filter>
        <!--
            This provides a top-level entry into the FlashLight application: the standard MAIN action is a main entry point (not requiring any other information in the Intent), 
            and the LAUNCHER category says that this entry point should be listed in the application launcher. 

            { action=android.app.action.MAIN } matches all of the activities that can be used as top-level entry points into an application.

            { action=android.app.action.MAIN, category=android.app.category.LAUNCHER } is the actual intent used by the Launcher to populate its top-level list.
            
         -->
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
      </intent-filter>
      
    </activity>
    
    <activity android:name=".activity.GreenFlashLight" android:label="@string/app_name"/>

  </application>

  <uses-sdk android:minSdkVersion="4" />

</manifest>