In this Presentation I have added significance of Android concepts which will be useful for the beginners to how to use those features as well as for developers.
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• Having a basic understanding of the Android’s core concepts it
will help you to make different topics.
• They are
• Apps and APK files
• Views and view groups
• Layout XML files
• The android app is an application which is present in APK
(Android application package).
• Thus APK file contains compiled java code, texts and
images of Android application.
• Thus Android Activity is a GUI
component , it is very much
complicated work in doing smart
phones because it does not have
enough space when compare to
• But in android app you can
arrange list of websites , it will act
as a desktop and you can easily
view many websites .
• Fragments is a total user
interface and it only takes up
the part of the screen
• Fragments are mainly used in
• Fragments are typically contains
views and viewgroups inside
• It can be reused in different
• Activities , fragments and some
view groups can use XML files to
define their layout and contents
• XML files will help you to find
out what GUI component or
fragment contains , as well as
styling of GUI
packaged as an part of application
,activities and widgets which can
live on the home screen of the
• Android devices typically
have a set of sensors built
in which you can access
from Android applications
• For example GPS is act as a
sensor in many smart
• you can get access to GPS
from Android applications.
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