Invoke task from other task and passing some arguments?

Help/Discuss
1

Hi everyone,

Is it possible to call a task from other task passing some data as parameter, like methods?

Example:

def appModuleRootFolder = '.'
def srcDir = 'src'
def googleServicesJson = 'google-services.json'

task copyFlavor1() {
    def flavorName = android.productFlavors.flavor1.name
    tasks.copyFlavorGoogleServicesJson.execute()
}

task copyFlavor2() {
    def flavorName = android.productFlavors.flavor2.name
    tasks.copyFlavorGoogleServicesJson.execute()
}

task copyFlavor3() {
    def flavorName = android.productFlavors.flavor3.name
    tasks.copyFlavorGoogleServicesJson.execute()
}

task copyFlavor4() {
    def flavorName = android.productFlavors.flavor4.name
    tasks.copyFlavorGoogleServicesJson.execute()
}  
  
task copyFlavor5() {
    def flavorName = android.productFlavors.flavor5.name
    tasks.copyFlavorGoogleServicesJson.execute()
}  
   
task copyFlavorGoogleServicesJson(type: Copy) {
    // How to get the flavorName like function parameter ???
    def flavorName = android.productFlavors.flavor1.name

    outputs.upToDateWhen { false }
    description = "Switches to $flavorName $googleServicesJson"
    delete "$appModuleRootFolder/$googleServicesJson"
    from "${srcDir}/$flavorName/"
    include "$googleServicesJson"
    into "$appModuleRootFolder"
}

How can I pass the flavorName as parameter/argument?

2

Invoking task from another task is deprecated. Use task dependsOn or mustRunAfter or finalizedBy methods, instead.

For example your task copyFlavor1 can be written as follows.

task copyFlavor1(dependsOn: 'copyFlavorGoogleServicesJson')

To pass parameter is achieved by passing it from property by command parameter

gradle copyFlavor1 -PflavorName1=someValue

ext {
    flavor1 = project.hasProperty('flavorName1') ? project.property('flavorName1') : 'defaultName'
}

(I’m sorry for not having knowledge on com.android.application plugin.)

3

Thanks for the answer but I don’t want add a parameter to the gradle command.

I simply want to invoke copyFlavor1 that invokes copyFlavorGoogleServicesJson and set the flavorName variable.

4

You mean task copyFalvor3 copies files whose name comes from android.productFlavors.flavor3.name, right?

If so, create List of flavors, and iterates it with creating tasks. This way doesn’t requires passing arguments.

[android.productFlavors.flavor1,
        android.productFlavors.flavor2,
        android.productFlavors.flavor3].collect {
    it.name
}.eachWithIndex {flavorName, index ->
    task "copyFlavor${index}"(type: Copy) {
        from "${srcDir}/${flavorName}"
        // and so on
    }
}
5

And this should be defined inside any kind of task? or simply in the root script in the afterEvaluate maybe? Also, how to do it if the flavor names are: flavorBanana, flavorPeach, flavorApple?

6

So I can do easy this for other flavorNames:

[android.productFlavors.flavorBananas,
    android.productFlavors.flavorPeach,
    android.productFlavors.flavorApple].collect {
it
}.eachWithIndex {flavorName, index ->
    task "copy${flavorName}"(type: Copy) {
        from "${srcDir}/${flavorName}"
        // and so on
    }
}
7

Or even better, I can do it like this:

android.productFlavors.collect {
it.name
}.eachWithIndex {flavorName, index ->
    task "copy${flavorName}"(type: Copy) {
        from "${srcDir}/${flavorName}"
        // and so on
    }
}