CODEWITHSUNDEEP
androidannotation-processing
lisongping
lisongping

Reputation: 21

How to display annotation processor message in Android Studio?

I want to write a demo using Java annotation processor in Android Studio, like ButterKnife. And I want to print some informations in process() method to know it has exactly run. I use System.out.println() and Messager.printMessage, but I don't know how to display these informations in Android Studio like Logcat.

@Override
public boolean process(Set<? extends TypeElement> set, RoundEnvironment roundEnvironment) {
    System.out.println("BindingProcessor is running!!!");
    messager.printMessage(Diagnostic.Kind.WARNING, "BindingProcessor is running!!!");
    return false;
}

And add my build output window informations:

Executing tasks: [:25-processor:assemble, :25-processor:testClasses]

:25-annotations:compileJava UP-TO-DATE
:25-processor:compileJava UP-TO-DATE
:25-processor:processResources UP-TO-DATE
:25-processor:classes UP-TO-DATE
:25-processor:jar UP-TO-DATE
:25-processor:assemble UP-TO-DATE
:25-processor:compileTestJava NO-SOURCE
:25-processor:processTestResources NO-SOURCE
:25-processor:testClasses UP-TO-DATE

BUILD SUCCESSFUL in 0s
4 actionable tasks: 4 up-to-date

I got the messages in one project, but in the other project, I got the other problem. I checked out the build out windows, in the first correct project, the messages showed below :compileDebugJavaWithJava message, but in the other project, I got the information below but no process messages:

> Task :app:compileDebugJavaWithJavac
Gradle may disable incremental compilation as the following annotation processors are not incremental: lib-compiler.jar (project :lib-compiler).
Consider setting the experimental feature flag android.enableSeparateAnnotationProcessing=true in the gradle.properties file to run annotation processing in a separate task and make compilation incremental.

Upvotes: 1

Views: 1652

Answers (3)

djzhao
djzhao

Reputation: 1059

If you use a java lib, check the configure of the path

The Annotation Processor should register in path-to-lib\src\main\resources\META-INF\services\javax.annotation.processing.Processor

with the full type name, egcn.djzhao.compiler.AnnotationProcessor

Upvotes: 0

gmetal
gmetal

Reputation: 2988

An annoatation processor runs during the build phase, not at runtime. The logcat window in Android Studio shows the debug log of a connected device at runtime.

To view messages printed out, you need to switch to the Build window (View -> Tool windows -> Build). All messages pertaining to the build phase are sent here.

I believe that the warning you mention, is simply a warning, it shouldn't impact your annotation processor. Perhaps you haven't added the appropriate annotation, which is why you receive no output.

Upvotes: 1

apksherlock
apksherlock

Reputation: 8371

Your messages will not print on the console, but on the build section. That's because the annotation processor runs on the build process. Example:

Upvotes: 0

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