Injecting Custom Tasks Into Build Chain

[Jake Wharton]

I'm trying to inject a custom task into the normal build chain. Doing things I shouldn't... as usual.

def debugVariants = android.applicationVariants.matching { variant ->
  variant.buildType.debuggable
}

debugVariants.each { variant ->
  task chatty(dependsOn: variant.dexTask.dependsOn) << {
    println "hey"
  }
  variant.dexTask.dependsOn = chatty
}

* What went wrong:
A problem occurred evaluating project ':foo'.
> Could not find property 'dexTask' on com.android.build.gradle.internal.api.ApplicationVariantImpl_Decorated@1ef05b9b.

Which I find strange because BasePlugin.groovy has this (emphasis added):

// Add a dex task
def dexTaskName = "dex${variantData.name}"
def dexTask = project.tasks.create(dexTaskName, Dex)
variantData.dexTask = dexTask

if (variantData.proguardTask != null) {
    dexTask.dependsOn variantData.proguardTask
} else {
    dexTask.dependsOn variantData.javaCompileTask
}

Any ideas?

---

Jake Wharton
http://about.me/jakewharton

[Xavier Ducrohet]

The properties on the variant are named differently from that code in BasePlugin. There's 2 "variant" class (actually 3).

VariantData is internal storage

There's a [Base|Test|Apk|Library]Variant class for the api inside a build.gradle

Finally there's a "Variant" interface for the model that is sent to the IDE.

You'll find the names of the properties of the [Base|Test|Apk|Library]Variant classes here: http://tools.android.com/tech-docs/new-build-system/user-guide#TOC-Manipulating-tasks

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--
Xavier Ducrohet
Android SDK Tech Lead
Google Inc.
http://developer.android.com | http://tools.android.com

Please do not send me questions directly. Thanks!

[Jake Wharton]

That worked. Thanks.

I read that section, too. Must've not permeated into my brain.

---
Jake Wharton
http://about.me/jakewharton

[Brian Shuman]

what about

tasks.withType(org.gradle.api.tasks.compile.JavaCompile){

println javaCompile.classpath

}

I get "Could not find property 'javaCompile' on task :XXXXXX:compileDebug"

I'm referencing the link above and javaCompile should be there

[Xavier Ducrohet]

This should work

tasks.withType(org.gradle.api.tasks.compile.JavaCompile){ javaCompile ->

println javaCompile.classpath

}

If you don't specify "javaCompile ->" I think the default property name for the object coming from the collection will be "it"

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[Brian Shuman]

that did the trick, now i just have to find out how to keep the integrity of the classpath since its getting overriden..

On Thursday, June 13, 2013 10:17:21 PM UTC-7, Jake Wharton wrote: