This document provides an overview of mobile application development with Android. It discusses the history of Android, including its origins and founders. It then defines Android as an open-source software platform based on Linux and allows developing apps using Java. The document outlines the major Android versions and highlights Android's features such as WiFi, Bluetooth, and various sensors. It also describes common Android app components like activities, services, content providers and broadcasts. Finally, the document summarizes Android's lifecycle methods and the process of passing data between activities.

1. Mobile Application Development
with ANDROID
K.D.V.Vara Prasad
11505988

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Contents
 History of android
 Introduction of android
 Android versions
 Features of android
 Components in android
 Android life cycle
 Going from one activity to another activity
 Advantages of android
 Disadvantages of android
 Conclusion

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HISTORY OF ANDROID
The word "Android" originated from the
Alchemical Literature in 1727.
Android Inc. founded in Palo Alto,california,
United States in october 2003 by Andy Rubin
[C0-founder of Danger], Rich Miner[Co-founder of
Wildfire Communication Inc.], Nick Sears[Once VP
at T- mobile] and Chris White[Headed design and
interface development at web TV] to develop.

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WHAT IS ANDROID?
• It is a open source software platform and operating system for mobile devices
based on Linux Kernel.
• Developed by google and later the Open Handset Alliance(OHA)
• Allows writing managed code in Java Programming Language.
• Android has its own virtual machine i.e. DVM(Dalvik Virtual Machine),which is
used for executing android applications.
• Google purchased the initial developer of the software, android incorporated in
2005.

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ANDROID VERSIONS

6.  Background Wi-Fi location still runs even when Wi-Fi is turned off.
 Developer logging and analysing enhancements.
 It is optimised for mobile devices.
 It enables reuse and replacement of components.
 Java support ,media support, multi touch, video calling, multi tasking,
Voice based features, screen capture, camera, Bluetooth, GPS, compass, accelometer and 3G.
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FEATURES OF ANDROID

7. • LinearLayout - LinearLayout is a view group that align all the children in a
single direction, vertically or horizontally. You can specify the layout direction
with the android : orientation attribute all the children of the linear layout are
stack after one other. so a vertical list will only have one child per row, no
matter how wide they are, and a horizontal list will only be one row.
• ScrollView - A Scroll View is an public Scroll View that extends Frame
Layout. Scroll View have only one child direct child placed within it. To add a
Multiple Views within the scroll view, make the direct child you add a view
group.
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COMPONENTS IN ANDROID

8. • ListView - ListView is a view group that displays a list of scrollable items.
The list items are automatically inserted to the list using an adapter that
pulls content from a source such as an array or database query and
converts each item result into a view that's placed into the list.
• GridView - GridView is an View Group that displays items in a two-
dimensional, scrollable grid. The grid items are automatically inserted to the
layout using a List Adapter.it is a public class that extends the AbsListView.
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COMPONENTS IN ANDROID

9. • Text View - A Text View is a display attribute to the user and optionally allow
them to edit it. A TextView is a complete text editor however the basic class
is configured to now allow editing. You can initialize and declare the text like
for eg- TextView tt=(TextView) findViewById(R.id.tt)
• Button - A button consists of text or an icon (or both text and an icon) that
communicates what action occurs when the user touches it. You can initialize
and declare the button in the java like for eg - Button bt1=(Button)
findViewById(R.id.bt1). You can register the button for the click listner in this
way which mentioned as - bt1.setOnClickListener(MainActivity.this)
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COMPONENTS IN ANDROID

10. Button List View
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COMPONENTS IN ANDROID

11. COMPONENTS IN ANDROID
 CheckBox :-It is a public class, it extends the Compoud Button. Checkboxes allow
the user to select one or more options from a set. Typically, you should present each
checkbox option in a vertical list.
 You can declare it inside the java code like for eg - CheckBox c1=(CheckBox)
findViewById(R.id.c1).
 A checkbox is a specific type of two-states button that can be either checked or
unchecked. A example usage of a checkbox inside your activity would be the
following -
 Public class Activity extends Activity{
If(CheckBox.isChecked())
{
checkBox.setChecked(false)
}}
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12.  OnCreate()You must implement this callback, which fires when the
system first creates the activity. On activity creation, the activity enters
the Created state. In the onCreate() method, you perform basic
application startup logic that should happen only once for the entire life of
the activity.
 For example, your implementation of onCreate() might bind data to lists,
initialize background threads, and instantiate some class-scope variables
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ANDROID LIFECYCLE

13. OnStart()
 When the activity enters the Started state, the
system invokes this callback.
 The OnStart() call makes the activity visible
to the user, as the app prepares for the
activity to enter the foreground and become
interactive.
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ANDROID LIFECYCLE

14. OnResume()
 OnResume() : When the activity enters the
Resumed state, it comes to the foreground, and
then the system invokes the OnResume()
callback.
 This is the state in which the app interacts with
the user.
 The app stays in this state until something
happens to take focus away from the app.
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ANDROID LIFECYCLE

15. OnPause()
 On Pause() –This system call the first
indication that the user is leaving your
activity.
 Use the on Pause() method to pause
operation such as animations and
music playback that should not
continue while the Activity is in
paused state, and that you expect to
resume shortly.
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ANDROID LIFECYCLE

16.  OnStop() : When your activity is no longer visible to the user, it has entered
the Stopped state, and the system invokes the onStop() callback. This may occur,
for example, when a newly launched activity covers the entire screen. The
system may also call onStop() when the activity has finished running, and is
about to be terminated.
 OnDestroy() : It is Called before the activity is destroyed. This is the final call
that the activity receives. The system either invokes this callback because the
activity is finishing due to someone's calling finish(), or because the system is
temporarily destroying the process containing the activity to save space. You can
distinguish between these two scenarios with the isFinishing() method.
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ANDROID LIFECYCLE

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ASSIGNING DATA TO TEXT

18.  This is our first activity  This is the second activity
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GOING FROM ONE ACTIVITY TO SECOND ACTIVITY

19.  The ability for anyone to customize the Google Android Platform.
 It gives you better notification.
 It lets you choose your hardware.
 It has better app market(180000+ applications)
 With the support of many applications, the user can change the screen
display.
 A more mature platform.
 Supports all google services: Android OS supports all of Google Services
from Gmail to Google reader, all the Google Services you can have with
one OS, namely Android.
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ADVANTAGES OF ANDROID

20.  Android market is less control of the manager, sometimes they are
malware.
 Waste of batteries, This is because the OS is a lot of “process” in the
background causing the battery quickly drains.
 Sometimes slow device company issued an official version of android of
your own.
 Extremely inconsistence in design among apps.
 Very unstable often hang or crash.
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DISADVANTAGES OF ANDROID

21.  Android is open to all : Industry, Developers and User.
 Google android is stepping into the next level of Mobile Internet.
 We hope that the next versions of Android have overcome the actual
limitations and may this OS is also developed to use in PC’s also.
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CONCLUSION

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Thank You!