Annotation processors must be explicitly declared now

Question

Error:Execution failed for task \':laMusique2May2016:javaPreCompileRelease\'.
> Annotation processors must be explicitly declared now.  The following dependencies on          


        

Answer 1

Even i had the same problem and finally i solved my problem by adding this to app level gradle file

android{
....
    defaultConfig{
....
    javaCompileOptions {
        annotationProcessorOptions {
            includeCompileClasspath true
        }
    }
}
buildTypes {
...
}

hope its solved someone's problem

Answer 2

You should explicitly add annotation processors in gradle. Putting the following in your gradle dependencies should fix it:

annotationProcessor 'com.google.auto.value:auto-value:1.1'

---

However, as others have already mentioned, you should probably figure out which of your existing dependencies was using auto-value to assert whether or not you really need it. Annotation processors ultimately slow down your build time so don't include it if it's unnecessary.

Answer 3

Adding annotationProcessor dependencies not work for me, instead I drop this line inside build.gradle at arbitrary places works:

android.defaultConfig.javaCompileOptions.annotationProcessorOptions.includeCompileClasspath = true

Answer 4

Annotation processors can be declared with annotationProcessor instead of implementation/compile like we used to declare earlier.

implementation 'com.google.auto.value:auto-value:1.1' 

compile 'com.google.auto.value:auto-value:1.1' 

Should be replaced with

annotationProcessor 'com.google.auto.value:auto-value:1.1'

Answer 5

For me, this issue happened because jitpack wasn't placed as the last entry in root grade.

allprojects {
    repositories {
        // ... other repositories
        maven { url "https://jitpack.io" }
    }
}

The solution was taken from @hotchemi comment in https://github.com/permissions-dispatcher/PermissionsDispatcher/issues/535#issuecomment-432190926