This PPT was presented in Times internet to replicate some tools and techniques presented in Droidcon 2015.

1. DROIDCON INDIA 15
Tools and technologies to make task easy and
fast

2. Topic to be discussed
 Memory dump – Thinking beyond memory
 Zepline – Collaborate tool for dev. and
designer
 React Native – scope and prospect in android
 Realm – Best ORM for android
 Tricks & Hacks of Android Studio

3. Memory dumps
 All allocated
instances
 Class definition
 Strings
 Class names
 Field names
 Other Strings

4. Use cases
 Analyzing source of memory leaks
 Help to analyze any crash
 Android specific data
 Activity Back stack
 View hierarchy

5. Practical implementation
 Whenever the GC occur, table updates

6. After 10 open-close cycle

7. Leak report

8. Finding the real cause – dominator
tree

9. Compare two dumps
 Add to compare from histogram

10. Still on it……
 Memory dump as source of user data
 Compact memory dump – BMD
 Small size
 Relevant info.
 Analyze any crash using memory dump
https://techblog.badoo.com/blog/2015/05/26/better-memory-dumps-on-
android/

11. Live demo
Zepline with Sketch

12. React Native
 Mobile version of React.js
 Created and maintained by Facebook
 First launched & used in iOS in ‘14.

13. Mechanism
 JS is loaded on page load and DOM is loaded.
 But Native JS work on Virtual DOM in
background.
 Minimum steps/operation for updating real
DOM.

14. Why should I care ?
 Usual stuff
 Support multiple platform , F5, cmd+R also works
😃
 Flexbox layout
 Lots of JS libraries
 Not so usual
 write once, run anywhere, Learn once, write
anywhere

15. Android specific
 Render native views components
 Benefit of JS ecosystem
 Over the air updates
 Performance
 Async calculation of virtual DOM
 Common business logic , just write view bundle
separately

16. Not so good
 Custom controls
 Early stage of development
 Ramp up cost

17. Introduction, pros-cons and uses
Realm – a replacement for
SQLite

18. Introduction
 An ORM for mobile development
 Primarily developed for iOS in 2012.
 Lunched for android in Sept ‘15.

19. Plus points
 Eliminate creating table queries – use java
bean

20. Plus points
 Fast transections*
*Test are performed on Galaxy S3 with realm

21. Plus points
 Optimized object relationships

22. Plus points
 Cross platform
It support iOS & OS X and Android . So your
business logic remain same.
 Advanced Features
 Encryption
 Graph queries
 Migrations+ lots of add-ons for complex UI.

23. Plus points
 JSON handling

24. Plus points
 Does someone say “memory” ?
 bit-packing,
 caching,
 Vectorization
 zero-copy architecture

25. For developers
 Database change listener
 Realm browser for seeing db
 Lots of plugins for maps, search and sync
mechanism

26. Clients/Users
Community driven :
• 4th most starred database on Github.
• Top trending repo for java and Cocoa

27. Limitation
 Still in beta but moving toward 1.0 release.
 Threads : Realm objects, queries and results
can’t be passed.
 Add 800 KB in application after compiling and
expending.
Despite all these limitation it’s quite promising.

28. Demo

29. Being productive with Android
Studio
Ref : http://www.developerphil.com/android-studio-tips-of-the-day-roundup-1/

30. includes
 Live Template and custom template - demo
 Shortcuts and tricks in android studio

31. Shortcuts and tricks
 Extract methods
Windows : Ctrl+Alt+M
Mac : Cmd+Alt+M

32. Rename
 Shift+F6
Related files
 Windows/Linux: Ctrl+Alt+Home
 Mac: Ctrl+Cmd+Up

33.  Switcher
 Mac : Cmd+E
 Win/linux : ctrl+E
 Sublime selection
 Mac : Ctr+G
 Win/linux : Alt+J

34.  Column selection
 Mouse: Alt+MouseDrag
 Mac : Cmd+Shift+8
 Windows/Linux: Shift+Alt+Insert

35.  Conditional breakpoint
 Right click on brkpt
 Logging breakpoint

36. Questions ?? 😊