Android and iOS differ in their project structures, components, and approaches to common tasks. Android uses .APK files and has a project structure based on activities and fragments for screen navigation, similar to views and view controllers in iOS. It uses shared preferences like NSUserDefaults and Notifications like iOS to transfer data between screens. iOS uses .IPA files and has a strict view controller hierarchy for navigation between screens connected by segues. It stores data in files like Core Data or SQLite similar to how Android uses files and SQLite for data transfer and storage. Both platforms support debugging and handling different device screens and densities.

1. Android vs iOS
COMPARISON

2. Aspects
• Project structure
• Output final type
• Components build up
• Some other kind of facing
• Using style

3. Project structure

4. Output final type
• .IPA
• .APK

5. Components build up
• Naming
– NSString >< String
– NSObject ><Object
– NSInteger ><Integer
– ….
– UIView >< View
– UIButton >< Button
– UILabel >< Label
– UITextField >< EditText
– ….
• Storage
– NSUserDefault ><SharedPrefrence
• Layout
– .XIB>< .XML
• Controller
– UIViewController >< Activity
• Logging
– NSLog >< Log
• List Data
– UITableView>< ListView
• Notification
– iToast >< Toast
– UIAlert ><Alert

6. Some other kind of facing
• Declare
• Import libs
• Switching screen
• UnitTest
• ATT

7. Declare
Object object = new Object();
Student student = new Student("Nguyen Tuan Anh", "24", "Male");
Class Student{
private String name;
private int age;
private String gender;
public Student(String name, int age, String gender){
this.name = name;
this.age = age;
this.gender = gender;
}
}

8. Import Libs
• Same as:
– Add from static library:
• .a >< .jar
– Add module: same way.
– Add from resource :
• Cocoapod >< Maven
• Podfile >< pom.xml

9. Switching screen
• IOS :
– Don’t have default screen
– Self.window setRootViewController
– Using navigation controller to deligate
• pushViewController
• popViewController
• Android:
– Using IntentFilter set default screen
– Throw an Intent to transfer data + switch
screen
– Replace screen if using fragment
(using Support-V4 with FragmentManager)

10. Using style
• Debugging
• Looping: for | while | do while | ..
• Constructor( init )
• MultiScreen
• MultiVersion
• Transfer data between multible screen

11. Debugging iOS

12. Debugging android

13. MultiScreen
• IOS:
– IPad
– Iphone
• pixel density:
– Rentina
– Not rentina
• Size screen:
– 3.5 : Ip4
– 4 : Ip5
– 4.7 : Ip6 (near future)
– Something others
• Android: there are many way to
understand it
– Pixel density:
• Mdpi
• Hdpi
• Xhdpi
• Xxhdpi
• xxxhdpi
– Size screen:
• Small
• Normal
• Large
• Xlarge
• XXLarge

14. MultiScreen

15. Transfer data between screens
• iOS:
– setup next screen in current
screen & prepare data for it
before start.
– Other way:
• No suggest
• File
– SQLite
– NSUserDefault
– Core data (file has structure)
– …
• Android:
– Same as model driven - new
way was applied this time.
– Other way:
• Put data into Intent as bundle
• File
– SQLite
– SharedPreference
– Simple file

16. Thanks for view!