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

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

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

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Genymotion

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

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

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http://goo.gl/tt8Rp

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There’s no such thing as free lunch ..

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

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Survival guide ! • Intel x86 Emulator Accelerator • Snapshot or Host GPU

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

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

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

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

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

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

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

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

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Resolution • 1280x800 • 720x1080 • 1080x1920 • 480x800 • 1024x600 • Customizable

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Screen size • 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”)

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Demo time !

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Tips !

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

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

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

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

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

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Gradle enabled android project

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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/

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

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

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

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

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

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Command • gradle • tasks • clean • assemble • assembleRelease • assembleDebug • aR / asD

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Android integration • gradle android plugin • http:/ /tools.android.com/tech-docs/new- build-system/ • output • /build/apk/

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

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Eclipse project

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

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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

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

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

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

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Project structure

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app

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include library project

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ActionBarSherlock

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

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

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settings.gradle

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er.. no direct way ?

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Known issue • Library project is always “release” build • define your own debug flags.. • in AndroidManifest.xml

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

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Build types • default 2 types: debug & release • for debugging & signing

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

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

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

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

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

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Build • gradle assemblePaid • gradle aPD / gradle aPR • gradle assembleFree • gradle aFD / gradle aFR

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One more thing..

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

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

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

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

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Maven repository

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

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Project layout

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root-build.gradle

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library/build.gradle

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project/build.gradle • archivesBaseName • version

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app/build.gradle

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

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

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

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

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

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Q & A

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Bonus !

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Remove jars in output apk

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Remove jars in certain build type

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Launch after install

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

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NDK support • https:/ /gist.github.com/pboos/5802233#file- ndk-build-gradle

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