Declaration in Manifest file ie. AndroidManifest.xml

Declaration in Manifest file ie. AndroidManifest.xml

Androidmanifest.xml is the only file which tell the system about the components existing the application.Main features of manifest file:

• gives the details of user permission which application require.
• gives the details of minimum level of API requires by application.
• gives the details of hardware or software feature which an app require.
• also link the API libraries against the application.

Declaring components of Manifest file.

• In <application> ,android:icon attribute point to the resources for an application.  android:namepoints to the fully qualified class name for an application. android:label attributes points to the string which species the user visible string for application.
• All application components are declared in this way eg, <activity> ,<services>, < receiver > ,<provider> .
• In activating components we need to use intent to start activities,services, broadcast receivers. they are declared for components using <intent-filter>.
• <support-screen> is used to categorize screen based on the screen density and screen size.
• <user-configuration> provides different types of input configuration such as hardware keyboard,trackball.
• <user-feature> declares the hardware or software features which an application needs.
• <user-sdk> declares  the min and max level of API that an application uses.