Transcript
Ahmed AliMobileSq.net Founder
@ahmed_aly
MOBILE OPERATING SYSTEMS
ANDROID IS NO.1
AGENDA
1 – What is “ Android? “ 2 – Android History
3 – Android Versions 4 – Why Android!!?
5 – Development Tools6 – Hello World
7 – Project content8 - Event Handling 9 – Android Market
WHAT IS ANDROID?
Android is an open-source software stack for mobile devices that includes an operating system,
middleware and key applications. And it is based
upon a modified version of the Linux kernel
ANDROID HISTORY
Google Inc. purchased the initial developer of the software in 2005.
from Android Inc. which was founded in Palo Alto, California, United States in October, 2003 by Andy Rubin, Rich
Miner .
SYSTEM-ARCHITECTURE
WHAT IS THAT!!!
ANDROID PLATFORM
Android 1.5 CupCake Android 1.6 Donut
Android 2.1 EclairAndroid 2.2 FroyoAndroid 2.3 Gingerbread
Android 3.0 Honeycomb , Tablet OrientedAndroid 4.0 Ice Cream Sandwich
SOME STATISTICS
WHY ANDROID!? 1 – Open Source
2 – based on Linux kernel3 – Flash Player Support
4 – Different Models5 – Reasonable prices
6 – Google Apps7 – Android Apps
CHALLENGES OF SMARTPHONE PROGRAMMING
Screens Keyboards
Pointing toolsCPU speed and Memory
WHAT YOU CAN USE IN YOUR APP?
Storage Network
GPS Phone Services
MultiMedia
DEVELOPMENT TOOLS
- Java Language - Eclipse IDE
- ADT Plug-in For Eclipse - Android SDK
ANDROID SDK
Consist of the following parts : - Android Emulator
- Command line tools - Documentations.
- example Applications.
ANDROID EMULATOR
YOUR FIRST APP “HELLO WORLD”
Install Java JDKInstall EclipseInstall ADT Plug-inDownload Android SDK and install it Now, Create your First AppCoding
PROJECT CONTENT
ANDROID APPLICATION
Activities: user-facing components that present UI to interact with.
Services: processes that work in the background and don’t have a visible background
Content Providers: components make parts of your application data available to other applications
ANDROID APPLICATION
Intents: messages created by the system or application themselves that are then passed on to any interested party.
Broadcast Receivers: These react to specific intents, and might execute an action.
MANIFEST FILE (1/6)
The <manifest>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.MobileSq.HelloWorld" android:versionCode="1"
android:versionName="1.0“ android:installLocation=“preferExternal>”
MANIFEST FILE (2/6)
The <application>
<application android:icon="@drawable/icon" android:label="@string/app_name"
android:debuggable="true>"
/<application>
MANIFEST FILE (3/6)
The <activity>
<activity android:name=".HelloWorld" android:label="@string/app_name>"
< intent-filter>
<actionandroid:name="android.intent.action.MAIN>/ "
<categoryandroid:name="android.intent.category.LAUNCHER>/ "
/< intent-filter>/<activity>
MANIFEST FILE (4/6)
The <activity>
<activity android:name=".MrNorm" android:label="@string/app_name“
android:screenOrientation=“portrait” android:configurations=”keyboard|
keyboardHidden|orientation>/”
MANIFEST FILE (5/6)
The <uses-permission>
<uses-permission android:name="android.permission.INTERNET">/
MANIFEST FILE (6/6)
The <uses-sdk>
<uses-sdk android:minSdkVersion=“3“ android:targetSdkVersion=“9>/ ”
ACTIVITY LIFE CYCLE
The Activity can be in one of three states: -Running
-Paused -Stopped
-Dead
ACTIVITY LIFE CYCLE
INPUT HANDLING (1/4)
Processing Single Touch Events:
Touch Events are passed to an OnTouchListener interface implementation that we register with a view.
The OnTouchListener interface has only a single method
Public abstract boolean onTouch(View v, MotionEvent event)
INPUT HANDLING (2/4)
Processing Single Touch Events: (Cont.)
MotionEvent.getX)(MotionEvent.getY)(MotionEvent.getAcation)(
MotionEvent.ActionDownMotionEvent.ActionMoveMotionEvent.ActionCancleMotionEvent.ActionUp
INPUT HANDLING (3/4)
Processing Key Events:
To catch key Events, we implement another listener interface, called OnKeyListenerPublic boolean onKey(View v, int keyCode, KeyEvent
event)
INPUT HANDLING (4/4)
Processing Key Events:
KeyEvent.getAction)(KeyEvent.ActionDownKeyEvent.ActionUp
KeyEvent.getUnicodeChar)(
CODING!!!
ANDROID MARKET
ANDROID MARKET
Market Is Divided into Two Parts 1 – Phone Market
2 – Web Market
ANDROID MARKET
- 25$ Registration Fee for Developer - Developer receive 70% of Each Sale - Remaining amount Goes to carriers
- Google Doesn’t Take any percentage - Website : . . .www market android com
SUMMERY
Google inc. Company
C(core) ,C++ (some third party apps), java (UI) Programmed in
2008 Initial release
Monolithic (modified Linux kernel) Kernel Type
2.3.4 Latest stable release
Open Handset Alliance Developer
Android.com Website
Java Developing language
. . .www Market android com Market
Eclipse – ADT – Android SDK Developing Tools
`
@ahmed_aly
www.MobileSq.net
MY CONTACTS
LinkedIn : :// . . / / 1http eg linkedin com in ahmedali
Facebook : Facebook.com/Ahmed.Ali.IbrahimGmail : ahmed.saraya90@gmail.comHotMail : ahmed_ali@feng.bu.edu.eg
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