A brief guide to android gradle
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Gradle combines the power of Ant with the dependency management of Maven. It uses Groovy for its domain specific language to configure and execute builds. Gradle allows defining tasks to customize builds including running tasks in parallel or series based on dependencies. The Android plugin for Gradle integrates Android build configurations and adds tasks for compiling, packaging and testing Android code.
![Groovy
class Greet {
def name
Greet(who) { name = who[0].toUpperCase() + who[1..-1] }
def salute() { println "Hello $name!" }
}
g = new Greet('world')
g.salute()](https://image.slidesharecdn.com/tmij5hzvrc658ga2mrjo-140531225749-phpapp02/85/A-brief-guide-to-android-gradle-5-320.jpg)
![More simple way
sourceSets {
main.java.srcDirs = ['src/java']
main.resources.srcDirs =
['src/resources']
}](https://image.slidesharecdn.com/tmij5hzvrc658ga2mrjo-140531225749-phpapp02/85/A-brief-guide-to-android-gradle-19-320.jpg)
![Android source sets
android {
sourceSets {
main {
manifest.srcFile 'AndroidManifest.xml'
java.srcDirs = ['src']
resources.srcDirs = ['src']
aidl.srcDirs = ['src']
renderscript.srcDirs = ['src']
res.srcDirs = ['res']
assets.srcDirs = ['assets']
}
androidTest.setRoot('tests')
}
}](https://image.slidesharecdn.com/tmij5hzvrc658ga2mrjo-140531225749-phpapp02/85/A-brief-guide-to-android-gradle-21-320.jpg)
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A brief guide to android gradle
- 1. A brief guide to Android Gradle GDG Korea Android
- 2. Gradle? Gradle combines the power and flexibility of Ant with the dependency management and conventions of Maven into a more effective way to build.
- 3. Build Tool ● Configuration (Static) + Build (Dynamic) ● Ant o Focus on Build o hard to configure ● Maven o Focus on Configuration o hard to costumize ● Alt. o Gradle - Groovy language (Dynamic), DSL (Static) o Apache Ivy
- 4. Groovy ● Runs on Java VM ● The principle of least surprise (JAVA) ● Built-in List, Range, Map, Closure ● Improved Loops, Switches ● Built-in Regex, Improved Strings ● Supports Dynamic typing and Static typing.
- 5. Groovy class Greet { def name Greet(who) { name = who[0].toUpperCase() + who[1..-1] } def salute() { println "Hello $name!" } } g = new Greet('world') g.salute()
- 6. Task: Hello World task hello { doLast { println 'Hello world!' } }
- 7. gradle -q hello Hello world!
- 8. Short version task hello << { println 'Hello world!' }
- 9. Other task example task upper << { String someString = 'mY_nAmE' println "Original: " + someString println "Upper case: " + someString.toUpperCase() }
- 10. Loop example task count << { 4.times { print "$it " } }
- 11. Dependencies task hello << { println 'Hello world!' } task intro(dependsOn: hello) << { println "I'm Gradle" }
- 12. Dynamic tasks 4.times { counter -> task "task$counter" << { println "I'm task number $counter" } } > gradle -q task1 I'm task number 1
- 13. Manipulating existing tasks 4.times { counter -> task "task$counter" << { println "I'm task number $counter" } } task0.dependsOn task2, task3 > gradle -q task0 I'm task number 2 I'm task number 3 I'm task number 0
- 14. Default Tasks defaultTasks 'clean', 'run' task clean << { println 'Default Cleaning!' } task run << { println 'Default Running!' } task other << { println "I'm not a default task!" }
- 15. Java Plugin apply plugin: 'java' gradle build :compileJava :processResources :classes :jar :assemble :compileTestJava :processTestResources :testClasses :test :check :build
- 17. Adding dependencies dependencies { compile group: 'commons-collections', name: 'commons-collections', version: '3.2' testCompile group: 'junit', name: 'junit', version: '4.+' }
- 18. Adding source sets sourceSets { main { java { srcDir 'src/java' } resources { srcDir 'src/resources' } } }
- 19. More simple way sourceSets { main.java.srcDirs = ['src/java'] main.resources.srcDirs = ['src/resources'] }
- 20. Andorid build.gradle sample buildscript { repositories { mavenCentral() } dependencies { classpath 'com.android.tools.build:gradle:0.9.0' } } apply plugin: 'android' android { compileSdkVersion 19 buildToolsVersion "19.0.0" }
- 21. Android source sets android { sourceSets { main { manifest.srcFile 'AndroidManifest.xml' java.srcDirs = ['src'] resources.srcDirs = ['src'] aidl.srcDirs = ['src'] renderscript.srcDirs = ['src'] res.srcDirs = ['res'] assets.srcDirs = ['assets'] } androidTest.setRoot('tests') } }
- 22. Android version configuration android { compileSdkVersion 19 buildToolsVersion "19.0.0" defaultConfig { versionCode 12 versionName "2.0" minSdkVersion 16 targetSdkVersion 16 } }
- 23. Dynamic version def computeVersionName() { ... } android { compileSdkVersion 19 buildToolsVersion "19.0.0" defaultConfig { versionCode 12 versionName computeVersionName() minSdkVersion 16 targetSdkVersion 16 } }
- 24. More... ● http://tools.android.com/tech- docs/new-build-system/user-guide ● http://www.vogella.com/tutorials/A ndroidBuild/article.html ● http://kwonnam.pe.kr/wiki/gradle