[feature] Implement License Screen

app-android/build.gradle.kts

@@ -10,6 +10,7 @@ plugins {
     id("droidkaigi.primitive.detekt")
     id("droidkaigi.primitive.android.roborazzi")
     id("droidkaigi.primitive.kover")
+    id("droidkaigi.primitive.osslicenses")
 }
 
 val keystorePropertiesFile = file("keystore.properties")

app-android/src/main/AndroidManifest.xml

@@ -28,6 +28,14 @@
             </intent-filter>
         </activity>
 
+        <activity
+            android:name="com.google.android.gms.oss.licenses.OssLicensesMenuActivity"
+            android:theme="@style/Theme.AppCompat.Light.DarkActionBar" />
+
+        <activity
+            android:name="com.google.android.gms.oss.licenses.OssLicensesActivity"
+            android:theme="@style/Theme.AppCompat.Light.DarkActionBar" />
+
     </application>
 
 </manifest>

app-android/src/main/java/io/github/droidkaigi/confsched2023/KaigiApp.kt

@@ -17,6 +17,7 @@ import androidx.compose.runtime.Composable
 import androidx.compose.runtime.remember
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.platform.LocalContext
+import androidx.core.content.ContextCompat.startActivity
 import androidx.core.net.toUri
 import androidx.core.os.bundleOf
 import androidx.hilt.navigation.compose.hiltViewModel
@@ -27,6 +28,7 @@ import androidx.navigation.compose.composable
 import androidx.navigation.compose.rememberNavController
 import androidx.window.layout.DisplayFeature
 import co.touchlab.kermit.Logger
+import com.google.android.gms.oss.licenses.OssLicensesMenuActivity
 import io.github.droidkaigi.confsched2023.about.aboutScreenRoute
 import io.github.droidkaigi.confsched2023.about.navigateAboutScreen
 import io.github.droidkaigi.confsched2023.about.nestedAboutScreen
@@ -148,7 +150,7 @@ private fun NavGraphBuilder.mainScreen(
                         Sponsors -> navController.navigateSponsorsScreen()
                         CodeOfConduct -> externalNavController.navigate(url = "https://portal.droidkaigi.jp/about/code-of-conduct")
                         Contributors -> mainNestedNavController.navigate(contributorsScreenRoute)
-                        License -> TODO()
+                        License -> externalNavController.navigateToLicenseScreen()
                         Medium -> externalNavController.navigate(url = "https://medium.com/droidkaigi")
                         PrivacyPolicy -> externalNavController.navigate(url = "https://portal.droidkaigi.jp/about/privacy")
                         Staff -> navController.navigateStaffScreen()
@@ -259,6 +261,10 @@ private class ExternalNavController(
         }
     }
 
+    fun navigateToLicenseScreen() {
+        context.startActivity(Intent(context, OssLicensesMenuActivity::class.java))
+    }
+
     @Suppress("SwallowedException")
     @RequiresApi(Build.VERSION_CODES.R)
     private fun navigateToNativeAppApi30(context: Context, uri: Uri): Boolean {

build-logic/build.gradle.kts

@@ -98,6 +98,10 @@ gradlePlugin {
             id = "droidkaigi.primitive.detekt"
             implementationClass = "io.github.droidkaigi.confsched2023.primitive.DetektPlugin"
         }
+        register("oss-licenses") {
+            id = "droidkaigi.primitive.osslicenses"
+            implementationClass = "io.github.droidkaigi.confsched2023.primitive.OssLicensesPlugin"
+        }
 
         // Conventions
         register("androidFeature") {

build-logic/src/main/kotlin/io/github/droidkaigi/confsched2023/primitive/OssLicensePlugin.kt

@@ -0,0 +1,17 @@
+package io.github.droidkaigi.confsched2023.primitive
+
+import org.gradle.api.Plugin
+import org.gradle.api.Project
+import org.gradle.kotlin.dsl.dependencies
+
+class OssLicensesPlugin : Plugin<Project> {
+    override fun apply(target: Project) {
+        with(target) {
+            pluginManager.apply("com.google.android.gms.oss-licenses-plugin")
+
+            dependencies {
+                implementation(libs.library("ossLicenses"))
+            }
+        }
+    }
+}

gradle/libs.versions.toml

@@ -32,6 +32,8 @@ multiplatformFirebase = "1.8.1"
 kermit = "1.2.2"
 okHttp = "4.11.0"
 ktorfit = "1.5.0"
+ossLicensesPlugin = "0.10.6"
+ossLicenses = "17.0.1"
 detekt = "1.23.1"
 twitterComposeRule = "0.0.26"
 
@@ -49,6 +51,7 @@ completeKotlinPlugin = { module = "com.louiscad.complete-kotlin:plugin", version
 detektGradlePlugin = { group = "io.gitlab.arturbosch.detekt", name = "detekt-gradle-plugin", version.ref = "detekt" }
 detektFormatting = { group = "io.gitlab.arturbosch.detekt", name = "detekt-formatting", version.ref = "detekt" }
 twitterComposeRule = { module = "com.twitter.compose.rules:detekt", version.ref = "twitterComposeRule" }
+ossLicensesPlugin = { group = "com.google.android.gms", name = "oss-licenses-plugin", version.ref = "ossLicensesPlugin" }
 
 androidDesugarJdkLibs = { group = "com.android.tools", name = "desugar_jdk_libs", version.ref = "androidDesugarJdkLibs" }
 
@@ -123,6 +126,8 @@ ktorfitKsp = { module = "de.jensklingenberg.ktorfit:ktorfit-ksp", version.ref =
 
 # Test
 
+ossLicenses = { module = "com.google.android.gms:play-services-oss-licenses", version.ref = "ossLicenses" }
+
 junit = { module = "junit:junit", version.ref = "junit" }
 androidxTestExtJunit = { module = "androidx.test.ext:junit", version.ref = "androidxTestExt" }
 androidxTestEspressoEspressoCore = { module = "androidx.test.espresso:espresso-core", version.ref = "androidxTestEspresso" }
@@ -142,6 +147,7 @@ roborazziGradlePlugin = { id = "io.github.takahirom.roborazzi", version.ref = "r
 kspGradlePlugin = { id = "com.google.devtools.ksp", version.ref = "ksp" }
 kotlinxKover = { id = "org.jetbrains.kotlinx.kover", version = "0.7.3" }
 detektGradlePlugin = { id = "io.gitlab.arturbosch.detekt", version.ref = "detekt" }
+ossLicensesPlugin = { id = "com.google.android.gms.oss-licenses-plugin", version.ref = "ossLicensesPlugin" }
 
 [bundles]
 plugins = [
@@ -156,4 +162,5 @@ plugins = [
     "kotlinxSerializationGradlePlugin",
     "completeKotlinPlugin",
     "detektGradlePlugin",
+    "ossLicensesPlugin"
 ]