How to get rid of Incremental annotation processing requested warning?

Question

I have just started using android development and trying to use Room library. Since yesterday I am facing this warning message

w: [kapt] Incremental a

Answer 1

Here is a list of things you can do to fix this and significantly decrease your build times while you're at it.

In your build.gradle (module) file:

android {
    ...
    defaultConfig {
        ...
        kapt {
            arguments {
                 arg("room.schemaLocation", "$projectDir/schemas".toString())
                 arg("room.incremental", "true")
                 arg("room.expandProjection", "true")
            }
        }
    }
    ...
}

In your gradle.properties file:

kapt.incremental.apt=true            // enabled by default on 1.3.50+
kapt.use.worker.api=true             // faster builds
kapt.include.compile.classpath=false // near instant builds when there are few changes

android.databinding.incremental=true
android.lifecycleProcessor.incremental=true
//add your specific library if it supports incremental kapt