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Qt for Android (and Symbian) Tam

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Presentation on theme: "Qt for Android (and Symbian) Tam"— Presentation transcript:

1 Qt for Android (and Symbian) Tam

2 About /me Tam HANNA –CEO, Tamoggemon Ltd. –Runs web sites about mobile computing –Writes scientific books

3 Overview Qt for Android (focus) Qt for –Symbian –MeeGo –TiZen –webOS Wrap-up

4 What is Android

5 Largest mobile OS by share Data: IDC 2012, Market Share Q3

6 Android is open Runs ANY app –If user enables it – app stores No permission model –User is NOT root

7 Android is Java Apps run in special VM called DALVIK –Pretty high performance But: NDK is available –Allows use of C++ code

8 Android is fragmented Many vendors –Different form factors Many stores –Many back-ends Analyst buzzword –Low practical relevance – like PalmOS

9 Qt for Android

10 Community-driven port Started by Bogdan Vatra –2011 Aquired by KDE –Provides server infrastructure, etc No support from Nokia –Digia mentioned in press release


12 LightHouse

13 Getting started

14 Supported platforms Linux (Ubuntu ) Mac OS Windows Speaker recommends: Linux

15 Getting started Install Ant 1.8 and OpenJDK sudo apt-get install ant sudo apt-get install openjdk-6-jdk

16 Graphical set-up sitas_sdk_installer.php sitas_sdk_installer.php chmod +x linux-online-necessitas- alpha4.1-sdk-installer sudo./linux-online-necessitas-alpha4.1- sdk-installer

17 Automatic deployment Tool fetches SDK One Click Install

18 Starting Necessitas cd NecessitasQtSDK/ cd QtCreator/ eator$ cd bin eator/bin$ sudo./necessitas

19 Internal architecture

20 Library versioning Qt is updated frequently –Legal reasons –Downward compatibility is pretty good Qt is large –7MB binary, or more –Memory is limited

21 Solution: Ministro Sits in app stores Auto-downloads libraries to device

22 Overview

23 GUI sniffing

24 GUI sniffing - II

25 Input


27 Project-speficic settings

28 Configure baseline

29 Application optics

30 Permissions

31 Permissions - II Signify what app does Help user decide

32 Libraries

33 Signing

34 Signing - II Android Signing verifies producer This binary is from workstation A NO rights / trust transfer except for update

35 Library management

36 Porting gotchas

37 Definitions

38 File includes All include paths are based on /.pro

39 Includes #include

40 gcc gotchas

41 Specific eekers Native code bits? Platform-specific files Soft keys?


43 Why develop for Symbian Symbian is DEAD But: devices still in circulation –Top especially in Latin America

44 Development options Carbide –Eclipse-based –Mature IDE –Limited to –Can not debug well Qt Creator –Decent integration –Debugs well –Qt SDK auto-deploys toolkit

45 Ovi Store - I Ovi Store can drive huge volume –1 million downloads => no issue VERY low conversion rates –1:1000 or less

46 Ovi Store - II Limited device reach for Qt content Not every Qt-capable device is enabled Forget Ovi for China –3 cents / Dollar

47 Ovi Store - III DL/t for game

48 Ovi Store - III DL/t for app

49 MeeGo

50 Dead platform N900 and N9 sold decently well –Few thousand technically savvy users Jolla plans Chinese device But: good tooling

51 TiZen

52 What is it?

53 Will it be in v1? SDK for V1 is said to be web-only However, Qt is used internally C/C++ runtime might be around (bada)

54 webOS

55 Why develop for it? Not dead yet –GRAM –Cooperation with LG planned Unofficial Qt port

56 Conclusion

57 Mobile is fragmented Multiple platforms –Battle for mindshare and –Winner is yet undecided C++ is common base line –C++ is everywhere –Even on iOS and Windows Phone 8

58 Mindshare is everything

59 Qt saves time Develop once, deploy multiple times –Increase mindshare –Increase market presence –More revenue Worst case: redo GUI with QML

60 Thanks ! ?!? - Pictures from :

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