问题
I am facing issue with Android Studio 3, gradle android plugin 3 with build target 27 and support lib 27.0.0
Error:Execution failed for task ':module:mockableAndroidJar'.
> Output file [[...]/build/generated/mockable-android-27.v3.jar] already exists.
I have to clean or manually delete all mockable-android jars from the generated folder time to time. So this means instead of getting better build times, I have to clean the project most of the times.
回答1:
Simply cleanup the existing jar before running the task again. Running clean
does work, but it's a little intense in my opinion. Instead, make the android-generated task depend on a very specific cleanup task:
task cleanAndroidMock(type: Delete) {
description = 'Deletes the mockable Android jar'
delete fileTree("${project.buildDir}/generated") {
include 'mockable-android*.jar'
}
}
project.afterEvaluate {
tasks['mockableAndroidJar'].dependsOn cleanAndroidMock
}
回答2:
I had this issue. Although, with API 28 platform tools. I deleted from the path and reinstalled, which worked for me.
回答3:
I have this issue as well as I'm using a modified android.jar (which has all the hidden API revealed). I don't use the unit testing and there's no apparent way to disable it in Android Studio 2.2.2, so I found a workaround for this problem:
Go to File -> Settings -> Build, Execution, Deployment -> Compiler Add to "Command-line Options": -x :app:prepareReleaseUnitTestDependencies -x :app:mockableAndroidJar -x :app:compileReleaseUnitTestSources Press "OK" and try to Rebuild Project again. Now the unit testing compilation tasks will always be skipped and no errors will be thrown.
回答4:
Try going to menu: Build -> Clean Project.
Or you can try menu: Files -> Invalidade Caches/Restart
Both worked for me!
回答5:
Easiest solution is to navigate to the given path [[...]/build/generated/mockable-android-27.v3.jar]
and simply remove the file mockable-android-27.v3.jar
.Go back to android studio and build again.
来源:https://stackoverflow.com/questions/47051813/execution-failed-for-task-mockableandroidjar-mockable-android-jar-already-ex