enable Annotation Processors option in Android Studio 2.2

Question

I'm trying to use java 8 in my project and for that I added the jack compiler.

After enabling jack I started having problems with libraries that use Annotation Processing and looking in the web I read that I need android studio 2.2 and com.android.tools.build:gradle:2.2.0-alpha6 to compile libraries that generate code from annotations.

I download Android Studio 2.2 preview 6 and converted my project to it. And after that I discovered that the apt gradle plugin is not supported anymore and then I needed to change every dependency that use apt to the use the new annotationProcessor option.

Ex:

apt "org.projectlombok:lombok:$rootProject.lombokVersion"

to

annotationProcessor "org.projectlombok:lombok:$rootProject.lombokVersion"

Now if I use "make project" the project is compiled without problems, but if I try to execute it I have errors with the code that should be generated by the annotations.

Also when I open the project I receive a warning from the lombok plugin "Annotation processing seems to be disabled for the project". When I open the project settings and go to "Build -> Compiler" I can't find Annotation Processors.

So, my question is: How can I enable Annotation Processors in Android Studio 2.2? This feature was disabled? If yes, how can I generate the code from annotations?

--EDIT-- I'm making a PullRequest to change the project to compile with Java8, you can check the PR here: https://github.com/jonathanrz/myexpenses-android/pull/57

Answer 1

Close the project. In the "Welcome to Android Studio" dialog click "Configure" in the bottom right corner.

Then,

Settings > Build, Execution, Deployment > Compiler > Annotation Processors. Tick 'Enable annotation processing'.

If that does not work. Delete the project from "Welcome to Android Studio" dialog and open from new.

Worked for me.

Answer 2

1. Close all your AndroidStudio Project

2. See

3. Click Configure-->Setting See

Answer 3

You can enable Annotation Processors without closing your project in Android Studio 2.3 :

File -> Other Settings -> Default Settings

Build, Execution, Deployment -> Compiler -> Annotation Processors -> 
Enable annotation processing.

Don't forget to clean, build, invalidate and restart after that.
Cheers!

Answer 4

https://stackoverflow.com/a/38698186/4024146

and after do: File > Invalidate Caches / Restart... > Invalidate and Restart

Answer 5

Open compiler.xml in the .idea folder. I had the following:

<annotationProcessing>
  <profile default="true" name="Default" enabled="false">
    <processorPath useClasspath="true" />
  </profile>
</annotationProcessing>

I simply changed enable to true and re-opened project.

Answer 6

1. Close your project.
2. Settings > Build, Execution, Deployment > Compiler > Annotation Processors. Check 'Enable annotation processing'.
3. Open your project.
4. File > Invalidate Caches / Restart... > Invalidate and Restart

Wait for the process completely, then everything will be fine.

Answer 7

Adding to @Jacques Koorts and @mtrakal

If you can't get to the "Welcome to Android Studio" screen. Try File -> Close Project instead of clicking the X icon. Then you'll get the "Welcome to Android Studio" screen and you'll see the gear in the bottom right. Follow the accepted answer after that and possibly the cache invalidation.

Answer 8

This Answer for those who face this problem in the future

For Kotlin

Add kapt plugin

apply plugin: 'kotlin-kapt'
implementation 'com.google.dagger:dagger:2.21'
kapt 'com.google.dagger:dagger-compiler:2.21'

For Java

implementation 'com.google.dagger:dagger:2.21'
annotationProcessor 'com.google.dagger:dagger-compiler:2.21'

Answer 9

Stuped但对我有用，在我升级到1.4.1的情况下尝试更改库版本

Answer 10

Sometimes the annotate option will be grayed out if the project is not integrated into version control. So goto VCS->Enable version control integration then voila you will see the annotate option and can see the author name beside the line numbers on the editor.

Answer 11

personally i will force my way through adding this to your build.gradle(Module:app) file

android {
    ...
    defaultConfig {
        ...
        javaCompileOptions {
            annotationProcessorOptions {
                includeCompileClasspath false
            }
        }
    }
}