GRPC For Android with Kotlin Dependencies

[Amueller36]

Hello Dear Maintainer & Community,

for a pure Android with Kotlin project, does my configuration need to look like this?
or can I remove some irrelevant parts? I got confused by the example repositories...

If someone could clear me up I would be really thankful!

This is the first thing I am unsure about, do I really need java files to be created?

build.gradle.kts (app):

  create("java") {
      option("lite")
  }
  create("grpc") {
      option("lite")
  }
                

2nd thing I am unsure about in my dependencies I have 2 protobuf lite dependencies

grpc-protobuf-lite = { module = "io.grpc:grpc-protobuf-lite", version.ref = "grpcOkhttp" }
protobuf-kotlin-lite = { group = "com.google.protobuf", name = "protobuf-kotlin-lite", version = "3.25.3" }

Here are all the files displayed fully:

build.gradle.kts (project):

plugins {
    alias(libs.plugins.android.application) apply false
    alias(libs.plugins.jetbrains.kotlin.android) apply false
    alias(libs.plugins.protobuf) apply false
}

Full build.gradle.kts (app)

protobuf {
    protoc {
        artifact = libs.protoc.asProvider().get().toString()
    }
    plugins {
        create("java") {
            artifact = libs.protoc.gen.grpc.java.get().toString()
        }
        create("grpc") {
            artifact = libs.protoc.gen.grpc.java.get().toString()
        }
        create("grpckt") {
            artifact = libs.protoc.gen.grpc.kotlin.get().toString() + ":jdk8@jar"
        }
    }

    generateProtoTasks {
        all().forEach {
            it.plugins {
                create("java") {
                    option("lite")
                }
                create("grpc") {
                    option("lite")
                }
                create("grpckt") {
                    option("lite")
                }
            }
            it.builtins {
                create("kotlin") {
                    option("lite")
                }
            }
        }
    }
}

Full libs.versions.toml:

[versions]
agp = "8.5.1"
grpcOkhttp = "1.65.1"
kotlin = "1.9.0"
coreKtx = "1.13.1"
junit = "4.13.2"
junitVersion = "1.2.1"
espressoCore = "3.6.1"
kotlinxCoroutinesCore = "1.8.1"
lifecycleRuntimeKtx = "2.8.4"
activityCompose = "1.9.1"
composeBom = "2024.06.00"
materialIconsExtendedAndroid = "1.6.8"
navigationCompose = "2.7.7"

[libraries]
androidx-core-ktx = { group = "androidx.core", name = "core-ktx", version.ref = "coreKtx" }
androidx-material-icons-extended-android = { module = "androidx.compose.material:material-icons-extended-android", version.ref = "materialIconsExtendedAndroid" }

grpc-okhttp = { module = "io.grpc:grpc-okhttp", version.ref = "grpcOkhttp" }
grpc-protobuf-lite = { module = "io.grpc:grpc-protobuf-lite", version.ref = "grpcOkhttp" }
grpc-kotlin-stub = { module = "io.grpc:grpc-kotlin-stub", version = "1.4.1" }

kotlinx-coroutines-core = { module = "org.jetbrains.kotlinx:kotlinx-coroutines-core", version.ref = "kotlinxCoroutinesCore" }
protoc = { group = "com.google.protobuf", name = "protoc", version = "3.25.3" }
protobuf-kotlin-lite = { group = "com.google.protobuf", name = "protobuf-kotlin-lite", version = "3.25.3" }
protoc-gen-grpc-java = { group = "io.grpc", name = "protoc-gen-grpc-java", version = "1.62.2" }
protoc-gen-grpc-kotlin = { group = "io.grpc", name = "protoc-gen-grpc-kotlin", version = "1.4.1" }

junit = { group = "junit", name = "junit", version.ref = "junit" }
androidx-junit = { group = "androidx.test.ext", name = "junit", version.ref = "junitVersion" }
androidx-espresso-core = { group = "androidx.test.espresso", name = "espresso-core", version.ref = "espressoCore" }
androidx-lifecycle-runtime-ktx = { group = "androidx.lifecycle", name = "lifecycle-runtime-ktx", version.ref = "lifecycleRuntimeKtx" }
androidx-activity-compose = { group = "androidx.activity", name = "activity-compose", version.ref = "activityCompose" }
androidx-compose-bom = { group = "androidx.compose", name = "compose-bom", version.ref = "composeBom" }
androidx-ui = { group = "androidx.compose.ui", name = "ui" }
androidx-ui-graphics = { group = "androidx.compose.ui", name = "ui-graphics" }
androidx-ui-tooling = { group = "androidx.compose.ui", name = "ui-tooling" }
androidx-ui-tooling-preview = { group = "androidx.compose.ui", name = "ui-tooling-preview" }
androidx-ui-test-manifest = { group = "androidx.compose.ui", name = "ui-test-manifest" }
androidx-ui-test-junit4 = { group = "androidx.compose.ui", name = "ui-test-junit4" }
androidx-material3 = { group = "androidx.compose.material3", name = "material3" }
androidx-navigation-compose = { group = "androidx.navigation", name = "navigation-compose", version.ref = "navigationCompose" }

[plugins]
android-application = { id = "com.android.application", version.ref = "agp" }
jetbrains-kotlin-android = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" }
protobuf = { id = "com.google.protobuf", version = "0.9.4" }