CODEWITHSUNDEEP
androidkotlinandroid-gradle-pluginkaptkotlin-symbol-processing
Namek Master
Namek Master

Reputation: 91

How to generate android resource (xml) files by using Kotlin KSP

I'm working on a custom generator to generate code from annotation on Android platform. I currently using KSP for code generating. After I generate the code, I need to generate some resource xml files, What shall I do for it?

I considered some points:

  1. There are official way to generate resource file in build.gradle, but because the content of the resource is derived from the annotation so I can't move the generator code to build.gradle.
  2. Another way is move the generator code to build.gradle totally, but I can't parse the annotation in source file without ksp or apt/kapt.
  3. Where should I store the generated resource file? It seems I can't get output dir from KSP api.

Upvotes: 1

Views: 984

Answers (1)

Nikola Despotoski
Nikola Despotoski

Reputation: 50588

What do you mean by moving to build.gradle? Do you mean generate resources from gradle task?

You can generate resources from your SymbolProcessor in similar fashion as you would generate a source code. KSP runs before the sources are compiled and resources are merged. You can generate аn XML at generated resources directory e.g app/src/myplugin/res then include the generated resources, so your app can recognize them:

sourceSets {
        main {
            res.srcDirs = ['src/main/res/', 'src/myplugin/res',]
        }
    }

You can specify the target resource directory as KSP argument as:

ksp {
    arg("generatedResourceDir", "$projectDir/src/myplugin/res")
}

Arguments provided will available in SymbolProcessorEnvironment.options

Upvotes: 1

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