We will discuss how to build your application on the top of cross-platform technologies using advantages of few languages. We will deep review UI and business logic and think how to make a bridge between them.

1. CROSS-PLATFORM MOBILE
DEVELOPMENT
Alexander Shitikov
Head of mobile development department

2. HYBRID APPLICATIONS

3. TECHNOLOGIES

4. BUSINESS LOGIC
Shared logic
for each platform

5. BUSINESS LOGIC

6. BUSINESS LOGIC

7. JAVA AS THE BRIDGE

8. CHALLENGES
• To create cross-platform mobile business logic library
on Java
• To give fully-native interface to developers to interact
with it

9. SOLUTION
• RoboVM
• Objective-C JNI wrapper generator

10. FEATURES
• Memory management
• Threading
• Namespaces
• Inheritance
• Mapping
• Overloading
• Exceptions

11. MEMORY MANAGEMENT
• Java object from native
• Native object from java

12. THREADING
• Control by java
• Control by native

13. NAMESPACES
java.lang.String -> MTCString
Problem:
pl.mobiletrends.String -> MTCString

14. NAMESPACES
java.lang.String -> java_lang_String

15. NAMESPACES
java.lang.String -> JavaLangString

16. NAMESPACES
java.lang.String -> MTCJLString

17. INHERITANCE AND MAPPING
• class -> @interface
• interface -> @protocol
• boolean -> bool
• byte -> char
• …
• Int[] -> PrimitiveIntArray
• Int[][] -> NSArray<PrimitiveIntArray>
• Object -> MTCObject

18. INHERITANCE ARTIFACT
public Animal getAnimal() { … }
- (MTCAnimal *)getAnimal;
MTC + Animal.getClass().getShortName()

19. MAPPING EXAMPLE
public String getTestString() {
return “Hello, World!”;
}
public int[] getGivenArray(int[] array) {
return array;
}
- (MTCString *)getTestString;
- (PrimitiveIntArray *)getGivenArray:(P
rimitiveIntArray *)array;

20. OVERLOADING CHALLENGES
public void overload(int a) {
…
}
public void overload(int[] a) {
…
}
- (void)overload:(int)a;
- (void)overload:(PrimitiveIntArray *)a;

21. OVERLOADING SOLUTION
public void overload(int a) {
…
}
public void overload(int[] a) {
…
}
- (void)overloadWithAint:(int)a;
- (void)overloadWithAintArray:(Primiti
veIntArray *)a;

22. EXCEPTIONS
public static void throwException()
{
throw new NullPointerException
(“MTC 2016”);
}
+ (void)throwException;
…
@try {
[MTCCustomClass throwException]
} @catch (MTCNullPointerException *e) {
...
} @finally { ... }

23. PROJECT STATUS
March-April 2016
alpha version

24. mobile.agima.ru +7 495 981-01-85 info@mobile.agima.ru
THANK YOU FOR ATTENTION!
Alexander Shitikov
Head of mobile development department
facebook.com/shitikov.ap