Android Notes

Activity:
Your applications presentation layer.  Every screen in your application will be an extension of activity. It is nothing but a visible screen. (Layouts, Views)


Intent:
An inter-application message-passing framework. Intent is an abstract description of an operation to be performed. Intent provides a facility for performing late runtime binding between the codes in different applications.


Intent Filter:
An intent filter declares the capabilities of its parent component.


Broadcast receiver:
Application - receive and respond to a global event, such as the phone ringing or an incoming text message. Broadcast Receivers will automatically start your application to respond to an Incoming Intent, making them perfect for creating event-driven applications.


Layouts:
Template of view objects.Some Layouts are Absolute Layout, Frame Layout, Linear Layout, Relative Layout.


Android manifest.xml
This XML file describes where your application begins, what its permissions are, and what activities it includes. Because this file is central to every Android application. The manifest is the one-stop shop for the platform to boot and manage your application


Does Android support the Bluetooth serial port profile?
Yes.

Can an application be started on powerup?
Yes.