Welcome In#Android
#Introduction of AndroidAndroid is a complete set of software
for mobile devices such as tablet computers, notebooks,
smartphones, electronic book readers, set-top boxes
Android is a software package and Linux based operating system
for mobile devices ,tablet and smartphone.It is developed by Google
and later the OHA (Open Handset Alliance).
Open Handset Alliance (OHA) :-It's a consortium of 84 companies
Such as Google, Samsung, AKM, synaptic, KDDI, Garmin, Teleca, EBay,
Intel etc.It was established on 5th November, 2007, led by Google.
It is committed to advance open standards, provide services and
deploy handsets using the Android Platform.
#History of AndroidThe history and versions of android are
interesting to know.The codenames of android ranges from A to J
currently, such as Aster, Blender, Cupcake, Donut, Eclair, Froyo,
Gingerbread, Honeycomb, Ice Cream Sandwitch, Jelly Bean, KitKat,
Lollipop.Let's understand the android history pointly:Initially,
Andy Rubin founded Android Incorporation in Palo Alto, California,
United States in October, 2003.In 17th August 2005, Google acquired
android Incorporation. Since then, it is in the subsidiary of
Google Incorporation.The key employees of Android Incorporation are
Andy Rubin, Rich Miner, Chris White and Nick Sears.
#Features of AndroidThere are many features of android. They are
as follows:It is open-source.Anyone can customize the Android
Platform.It provides support for messaging services (SMS and MMS),
web browser, storage (SQLite), connectivity (GSM, CDMA, Blue Tooth,
Wi-Fi etc.), media, handset layout etc.Wi-Fi hardware access.Shared
data stores.Peer-to-Peer supporting using Google Talk
JAVA (JDK 1.8) Eclipse IDE Android Development Tools(ADT 12.0)
Android-SDK (2.2)SQLite Database
Technologies Used#
Standard development environment is Eclipse + Android
Development Tools plugin + Android SDKDevelopment requires either
an Android OS device or an emulatorEmulator has
limitations:Performance is poorCamera, etc., simulated using your
computers hardwareNo real phone calls or textsGPS data, battery
readings, etc. must be simulatedReal device is affected by specific
hardware and software configurationAndroid Development
Apps are packaged in .apk format, variant of .jar, then
downloaded to device and installed.apks contain .dex files
(bytecode), manifest and various other filesManifest contains
security and link info, hardware access info, minimum OS release
info, etc.
Android Deployment
#Android Versions, Codename and APIVersionCodenameAPI1.0Alpha or
Astro Testing11.1Beta or Blender 21.5Cupcake (Ist
version)31.6Donut42.1clair72.2Froyo82.3Ginger Bread9,103.0 ,3.1
& 3.3Honey comb12 & 134.0Ice Cream Sandwitch154.1, 4.2
& 4.3Jelly Bean16, 17 and 184.4Kit
Kat19,205.0,5.1Lollipop21,22
#Backend Process on AndroidSourceByte Code.dex file.apk
fileSignUn-signEmulator(VD)Simulator(RD)Digital
SignatureAgeAuthenticationKeyDebug.keystore.android>25
yearjavacDemo.classDVMAAPTClass Demo{PSVM(String
str){Sop(hello);}}
Google play storetoolAndroid executable filetools
#Components of AndroidActivity:- An activity is a class that
represents a single screen. It is like a Frame in AWT.
Service:-Service is a background process that can run for a long
time. There are two types of services Local:-Local service is
accessed from within the application Remote:-from other
applications running on the same device.
Content Provider:-Content Providers are used to share data
between the applications.
Broadcast Receiver:- It is a class which display the
information.
#Requirements in App. Development IDE:- Integrated Development
Environment
JDK:- Java Development Kit
SDK:- software Development Kit
JDK & SDK:- used to compile
ADT:- Android Development Kit
NDK:- Native Development Kit
Hardware RequirementSystem : Pentium IV 2.4 GHzHard Disk : 40
GB.Monitor : 15 VGA Colour.Mouse : Logitech.RAM : 512 Mb.
Software RequirementOperating system : Windows XP.Coding
Language : Java 1.6Tool Kit :Android 2.2IDE :Eclipse
#Requirements of Hardware & Software
#Compilation Process
#Layout in AndroidLayout in android is a class which provide you
to background to place so many widgets on to it.Use in Mobile or
TablesLinear Layout: divide two parts1.1 Vertical layout1.2
Horizontal layoutRelative LayoutTable LayoutGrid layoutFrame
layout
Use in TabletsFragment LayoutSpace
It is a class which is used to display any message for a small
duration of time.Syntax:Toast.makeText(context, text, duration)
Example:-Toast.MakeText(getApplicationContext(),Hello
Toast,3000).show(); #Toast in Android
Toast
#Intent in AndroidIntent :- if we have to communication between
two difference components or activity responsible to intent.
Four types of Intent:Explicit intent: Communicate b/w diff.
components with in same app.Implicit intent: Communicate b/w diff.
components with more than two application.Pending Intent:-It is
used in service i.e. particular in alarm & notification. E.g.
Battery Low, shut downSticky intent:-It is used in broadcast
receiver it invoke a certain process in a repetitive manner. E.g.
daily based Alarm
#Adapter in AndroidAdapter is a class which is used to bridge
b/w the data element from any data types onto a list .
Types of adapterArray Adapter: used to create bridge b/w the
data of array type.Cursor Adapter : used to fetching down the data
from specific column.Base Adapter: used in custom designing of list
view in order to implement all the inflate of base adapter. Method
of base adapter getView() , getCount() , getItem(), getItemID()4.
List Adapter: used to create a bridge b/w the data from any
list.
#Activity Life CycleWe can control & manage the resource
through the life cycle method of activity.There are seven life
cycle method of android application.onCreate(): activity is first
created.onStart(): acticity become visible to the user.onResume():
activity will start interacting with the user.onPause():activity is
not visible to the user.onStop(): activity is no longer visible to
the user.onRestart(): after your activity is stopped prior to
strat.onDestroy(): activity to destroy
ActivityonCreate()onStart()onResume()onPause()onStop()onDestroy()
#Activity Life Cycle Diagram
#Animation in AndroidAnimation : It is a class which is used for
loading all types of animation using base class by the name of
animation utils.
Two types of method:Start Animation: used to start the animation
to be apply on the widget.Set Animation: used for the consecutive
animation to launched simultaneous.
Parameter used for designing :-Set: contains all the recursive
parameter used anim.Rotate: used to rotate in 360 deg. Either in
clock or anticlock wise dir.Alpha: used to parameter to provide
dullness to any widget.Scale: used to parameter to providing to
scaling object to any of the widget(zoom in ,zoom out)Translate:
used to parameter to move of the widget in x-axis & y-axis
coordinates
