This document contains a summary of a presentation about Android app development tools. It discusses Genymotion, an Android emulator, and how it provides faster emulation and additional features over the standard emulator. It also covers using Gradle as a build system for Android projects, including how to set up dependency management, signing, and building variants. The presentation provides sample Gradle scripts and links to GitHub repositories with more examples.

1. A Brain-Friendly Guide
Head First
Android App Dev Tools
MOPCON
shakalaca

2. Hello ! I’m Shaka
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CTO @ SmarTapper Co., Ltd.
Consultant @ SleepNOVA, Inc.
http:/
/about.me/shakalaca

3. Today’s topic
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Genymotion (101 session)
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w/ demo
Gradle (201 session)
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w/ sample scripts
Android Studio (201 session)

4. Genymotion

5. Myth :
App development on Android is
FREE (or cheaper) than iOS

6. Really ?
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Don’t have to buy a Mac
... you’ll buy one eventually (look at me)
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There’s an emulator
... you really use it ?
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Android phone is way cheaper than iPhone !
... you mean those in the next page ?

7. http://goo.gl/tt8Rp

8. There’s no such thing as free
lunch ..

9. Problems with
emulator
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No play services (sort of)
No camera
“telnet localhost 5554” doesn’t make sense
f5g really slow in arm based emulator

10. Survival guide !
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Intel x86 Emulator Accelerator
Snapshot or Host GPU

11. Buy real phone(s) !
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For platform/screen specific issues
Nexus is enough ...
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... I’m not sure

12. Developers’ pain
https://www.youtube.com/watch?v=cOUK0JZvbwI

13. It’s a bird.. It’s a plane..
It’s Genymotion !
http:/
/www.genymotion.com

14. Is it the one ?
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Android x86 emulator based on AndroVM open
source project
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http:/
/androvm.org/
(In some case) faster than SDK emulator
Multi-platform
IDE plugins

15. Good for ..
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Test applications
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Fast & cable free
Screencast
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Use your favorite software (for me:
QuickTime for OS X)

16. And gamers love it ..
https://www.google.com.tw/search?q=神魔之塔+genymotion

17. Features (HW)
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Camera
GPS
Battery
Speaker / Microphone
Rotation
Physical keys

18. Features (SW)
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API 16 & 17, 18 in preview
Play store (service)
Root access
OpenGL
Virtual keys
Full screen (F11)

19. Resolution
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1280x800
720x1080
1080x1920
480x800
1024x600
Customizable

20. Screen size
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Nexus One (3.7”)
Nexus S (4”)
Galaxy Nexus (4.65”)
Nexus 7 (7”)
Galaxy S4/HTC One/Xperia Z (5”)
WSVGA Tablet (7”)
WXGA Tablet (10.1”)

21. Demo time !

22. Tips !

23. Control
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Buttons
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Rotation: ctrl + F11
Full screen: F11
Gestures
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Zoom: ctrl + mouse left/right
Tile: ctrl + mouse up/down
Rotate: ctrl + shift + mouse left/right

24. Launch from CLI
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VBoxManage list vms
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"Galaxy Nexus - 4.2.2 - with Google Apps - API 17 720x1280" {fbbd7f3e-188d-4a9b-8cdc-5b70c1554f5b}
player --vm-name <VM name/id>
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/Application/Genymotion.app/Contents/MacOS/player --vm-name "Galaxy
Nexus - 4.2.2 - with Google Apps - API 17 - 720x1280"

25. genyshell
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Example: Setup gps to somewhere in Taipei
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Content of file “gps_loc”
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gps setstatus enabled
gps setlatitude 25.03
gps setlongitude 121.54
Command to apply configurations
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genyshell -f gps_loc

26. Change resolution
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Dummy way: Set in menu before launch
Geek way: Set through adb
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adb shell am display-size 800x480
adb shell am display-density 240
adb shell am display-size reset
For 4.3+
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adb shell wm size 800x480
adb shell wm density 240

27. Use my scripts :p
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adb root
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https:/
/gist.github.com/shakalaca/6716635
screenshot
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https:/
/gist.github.com/shakalaca/6822570
migration tool
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https:/
/github.com/shakalaca/
GenymotionVMMigrationTool

28. Gradle enabled
android project

29. What is gradle ?
Gradle is build automation evolved. Gradle can automate the building,
testing, publishing, deployment and more of software packages or
other types of projects such as generated static websites, generated
documentation or indeed anything else.
!
Gradle combines the power and flexibility of Ant with the dependency
management and conventions of Maven into a more effective way to
build. Powered by a Groovy DSL and packed with innovation, Gradle
provides a declarative way to describe all kinds of builds through
sensible defaults. Gradle is quickly becoming the build system of
choice for many open source projects, leading edge enterprises and
legacy automation challenges.
- http:/
/www.gradle.org/

30. .. short version
An open source build system that combines the
power of Ant & Maven but easy to use

31. Why (google wants to change the
build system to) gradle ?
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My guess..
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Simplify and unify project dependency
management in IDE & CLI
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Think about Eclipse & ant (ci server)
BETA
Android Studio is coming !

32. Should I use it ?
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For small project
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Easy to convert
For large project
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Worth trying if it can simplify the configurations
(dependency)
For project with variants
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Time for better management tool

33. Will it blow up my
projects ?
It’s 2013 now, you should have SCM … right ?

34. How gradle works ?
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Lifecycle
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Initialization
Configuration
Execution
Build scripts
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build.gradle
settings.gradle (optional)
gradle.properties (optional)
http://www.gradle.org/docs/current/userguide/build_lifecycle.html

35. Command
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gradle <task name>
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tasks
clean
assemble
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assembleRelease
assembleDebug
aR / asD

36. Android integration
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gradle android plugin
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http:/
/tools.android.com/tech-docs/newbuild-system/
output
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<project>/build/apk/

37. Step by step tutorial
• Basic
• Dependency
• Sign / Proguard
• Variant

39. Eclipse project

41. Dependencies
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compile files(‘libs/android-support-v4.jar’)
compile fileTree(dir: ‘libs’, include: ‘*.jar’)
compile ‘com.android.support:supportv4:18.0.0’

42. Android packages
!
• com.android.support:support-v4:18.0.0
• com.android.support:appcompat-v7:18.0.0
• com.android.support:gridlayout-v7:18.0.0
• com.android.support:support-v7-mediarouter:18.0.0
• com.android.support:support-v13:18.0.0
• com.google.android.gms:play-services:3.2.65

43. defaultConfig
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versionCode
versionName
minSdkVersion
targetSdkVersion
packageName
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signingConfig
proguardFile
proguardFiles
testPackageName
testInstrumentation
Runner

44. Happy building
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Put build.gradle in project directory
Build: gradle assemble
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build/apk/
Install: gradle installDebug or gradle
installRelease

45. Step by step tutorial
• Basic
• Dependency
• Sign / Proguard
• Variant

46. Project structure

47. app

48. include library project

49. ActionBarSherlock

50. Happy building
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Put build.gradle & settings.gradle in app
project directory
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Put build.gradle in library project directory
Build: gradle assemble
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build/apk/

51. settings.gradle
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Used in multi-project hierarchy
Define projects to be used in build

52. settings.gradle

53. er.. no direct way ?

56. Known issue
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Library project is always “release” build
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define your own debug flags..
<application /> in AndroidManifest.xml

57. Step by step tutorial
• Basic
• Dependency
• Sign / Proguard
• Variant

59. Build types
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default 2 types: debug & release
for debugging & signing

60. Build types
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debuggable
jniDebugBuild
renderscriptDebugBuild
renderscriptOptimLevel
packageNameSuffix
versionNameSuffix
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signingConfig
zipAlign
runProguard
proguardFile
proguardFiles

61. Tips
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Save your gradle.properties in ~/.gradle/
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.. If you work alone

63. Step by step tutorial
• Basic
• Dependency
• Sign / Proguard
• Variant

64. Build variant
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Creating different versions of same application
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free/paid
multi-apk
Build Variant = Build Type + Product Flavor

65. Product flavor
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Defines a customised version of application
build by the project
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Free / Paid
Amazon / Play Store / blah store
Same type as defaultConfig

67. Build
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gradle assemblePaid
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gradle aPD / gradle aPR
gradle assembleFree
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gradle aFD / gradle aFR

69. One more thing..

70. gradle wrapper
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Setup gradle automatically
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for gradle 1.7+
$ANDROID_HOME/tools/templates/gradle/
wrapper/
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execute “gradle wrapper”

72. Compatible with older
version of gradle
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change gradleVersion
run ‘./gradlew wrapper’

73. Summary
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Simple android project
Sign release key
Run proguard
Build variants
Wrapper

74. All samples are here
http:/
/github.com/shakalaca/
learning_gradle_android

75. Maven repository

76. Why & How ?
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Time is money
Use aar instead of re-compiling everything
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aar: Binary distribution of an Android Library
Project
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http:/
/tools.android.com/tech-docs/newbuild-system/aar-format

77. Project layout

78. root-build.gradle

79. library/build.gradle

80. project/build.gradle
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archivesBaseName
version

81. app/build.gradle

82. How
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deploy library
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./gradlew deploy
use local repository
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./gradlew as -PuseRepo

84. Performance boost
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in ~/.gradle/gradle.properties
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org.gradle.daemon=true
org.gradle.parallel=true (be careful)
stop the daemon
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gradle --stop

85. Refresh cache
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--refresh-dependencies
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stay up-to-date (?)
http://www.gradle.org/docs/current/userguide/
dependency_management.html#sec:cache_command_line_options

86. References
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Documentation
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http:/
/tools.android.com/tech-docs/new-build-system (Guide / Samples)
http:/
/www.gradle.org/documentation
Forums
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https:/
/plus.google.com/u/0/communities/114791428968349268860
https:/
/groups.google.com/forum/#!forum/adt-dev
http:/
/stackoverflow.com/questions/tagged/gradle
Tool
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http:/
/gradleplease.appspot.com/

87. Or follow me @
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G+
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http:/
/google.com/profiles/shakalaca
Blog
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http:/
/23pin.logdown.com
Taipei GDG (G+ Community)
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https:/
/plus.google.com/communities/
100566773212437391191

88. Q&A

89. Bonus !

91. Remove jars in output
apk

92. Remove jars in certain
build type

93. Launch after install

94. Move out and rename
output apk files
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android.applicationVariant.all { variant ->
variant.assemble.doLast { do_the_magic }
}
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variant.zipAlign
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true: extra variant.outputFile
false: variant.packageApplication.outputFile
https:/
/gist.github.com/shakalaca/6422811

95. NDK support
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https:/
/gist.github.com/pboos/5802233#filendk-build-gradle

96. For other issues ..
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Google Maps Android API v2 gradle integration
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Different resources for build types
http:/
/23pin.logdown.com/posts/144771-googlemaps-android-api-v2-gradle-integration
Gradle and GCM project integration
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Difference in AndroidManifest.xml
http:/
/23pin.logdown.com/posts/144770-gradle-andgcm-project-integration