It covers the basics required to learn Android Development. Basic Knowledge of Java is a pre-requisite.

1. 28th May 2015, NED University
Daniel Muhammad Idrees

2. • Software Engineer - Interactive Health Solutions
(www.ihsinformatics.com) (Dec 2013 – Present)
• Lead Android Trainer – SkillOrbit
(www.skillorbit.com) (May 2015 – Present)
• Private Tutor and Trainer (Dec 2014 – Present)
• Internee - Open Integrated Solutions (May 2012 – Sept
2012)
• Computer & Information Systems Engineer
(NED University, Batch 2009-10)
• O Levels Teacher (2009 – May 2015)
Email: enggdaniyal@hotmail.com
LinkedIn: www.linkedin.com/in/danielmidrees
Facebook: www.facebook.com/daniel.mi

3. What to Expect?
• Guidance
• Counseling
• Mentorship

4. What not to Expect?
Spoon Feeding!

6. Variables
• Data Types
o Primitive Types
o Non-primitive Types
• Local Variables
o Choosing Data Type
o Declaring (String string;)
o Initializing (string = “Hello”)
• Access Modifiers
• Class (static) Variables
• Instance (non-static) Variables

7. Primitive Data Types

8. Non-Primitive Data Types
• User-created
• Nullable
• Also called “Reference Types”
• Examples:
o Arrays
o String
o Lists

9. Access Modifiers
• Access Modifiers
o Public
o Private
o Protected
o Default

10. Operators
• Airthematic (+, -, *, /, ++, --, %)
• Relational (==, >=, <=, !=, >, <)
• Logical (&& , | |, !)

11. Controlling Flow of Execution
• Conditions
o if – else
o switch
• Loops
o for
o while
• Special Control Statements
o break, continue
o Return
o try-catch-finally

12. Function
• Signatures
• Naming
• Parameters
• Returning Values
• Static/Non-static Functions
• Calling Functions

13. Arrays
• Arrays
o Collection of Similar Items in Sequence
o Contains values or references
o Fixed, Finite Length
• Length
• Index
• Initialization
• Enhanced for loop

14. Best Coding Practices
• Indentation
• Naming Convention
• Use of Comments

15. Be an Engineer!
Not a Mechanic!

16. Object Oriented Programming
• Objects and Classes
o Object: Instance of a Class
o Class: Blueprint of an Object

17. Pillars of OOP
• Inheritance
• Polymorphism
o Method Overloading
o Method Overriding

18. Pillars of OOP
• Abstraction
o Biggest Challenge in OOP
o Relevant Attributes and Behavior
o Abstract and Concrete Classes
• Encapsulation
o Hiding Data
o Hiding Implementation
o Access/Mutate (simply, get/set)

19. Interfaces
• Why Not Multiple Inheritance?
• Interfaces are Pure Abstract Classes
• Rules
o No Instances
o No Constructors
o Only Method Signatures
o Only static final Members

20. Read more JAVA from:
• Java Actually by Khalid A. Mughal
• The Complete Reference Java by Herbert Schildt
• http://www.tutorialspoint.com/java/
• http://www.javatpoint.com/java-tutorial
Take Help From:
• Stackoverflow
• Google!

22. Introduction to
Android Development

23. Manifest File
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.package.default"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="11"
android:targetSdkVersion="21" />
<application>
<activity
android:name="com.resume.daniyalmuhammadidrees.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>

25. Strings.xml
<rescource
<string name="app_name">The name of your App!</string>
</resource>
@String/app_name “The name of your App!”

26. Layout.xml
• Types of Layouts
o LinearLayout
o RelativeLayout
o TableLayout
o GridLayout
o FrameLayout
o Fragment
• Views (Buttons, TextView, EditText etc)
• ViewGroup (Invisible container, contains Views)

27. Width and Height of Views
android:layout_width="match_parent"
android:layout_height="match_parent“
android:layout_width=“fill_parent"
android:layout_height=“fill_parent“
android:layout_width=“wrap_content"
android:layout_height=“wrap_content“
• wrap_content ( Take only as much as you need)
• match_parent (Take everything you can )
• fill_parent (Take as much as your parent have)

28. Accessing views through code

29. Activity Lifecycle
• Activity
• Lifecycle Methods

30. Orientation
• Landscape and Portrait
• Changing Orientation of Device
• Emulator shortcut key ‘Left Ctrl + F11’
• Setting fix Orientation of an Activity

31. More on UI
• Padding
• Margin
• Gravity
• Weightsum
Weightsum = 3 Layout_weight (View)= 1

32. Linear Layout
• Arrange views in a line vertically or horizontally.
• Views can have Layout Weight and Layout Gravity.

33. Relative Layout
• Place views with respect to other view or Parent
• Views inside RL does not have Layout Weight and Layout
Gravity.

34. Table Layout
• Arrange views in rows and columns.
• TableRow is MATCH_PARENT in width and
WRAP_CONTENT in height
• <TableRows> (Views) </TableRows>
• Columns in a row will be equal to number of views in that
row.

35. Grid Layout
• Arrange views in rows and columns.
• Available in API Level 14 and higher.
• Set Row Count and Column Count.

36. Frame Layout
• Views are stacked on top of each other.

37. ScrollView
• ScrollView
• HorizontalScrollView

38. • Events
• Listener
• Example of Button Click
Concept of Listener

39. Custom Button
• Design an Image of a Button.
• Design an Image of a pressed Button.
• Create an xml file in drawable folder.
• Call that xml in your layout View.
http://angrytools.com/android/button/
http://www.dibbus.com/2011/02/gradient-buttons-for-android/
Click
Click

40. Building Blocks of Android
• Activities
Something which user interacts with.
• Services
Something that runs in the background.
• Broadcast Receivers
Respond to broadcast messages by applications
or the system itself.
• Intents
Messenger carrying message.

41. • Used to start a new Activity
• Used to start a Service
• Used to get notifications from Broadcast Receivers
• <Intent-filter>
• Explicit Intents (there is a target)
• Implicit Intents (there is no SPECIFIC target)
Intents

42. Thank You!