Upgrade Kotlin to 2.0.20

This upgrade allows us to use https://developer.android.com/develop/ui/compose/compiler as specified in https://developer.android.com/jetpack/androidx/releases/compose-kotlin#pre-release_kotlin_compatibility

kotlinOptions is considered deprecated in preference of kotlin.compilerOptions (https://kotlinlang.org/docs/gradle-compiler-options.html#how-to-define-options)

PiperOrigin-RevId: 725266131

RELEASENOTES.md

@@ -3,6 +3,8 @@
 ### Unreleased changes
 
 *   Common Library:
+    *   Upgrade Kotlin from 1.9.20 to 2.0.20 and use Compose Compiler Gradle
+        plugin. Upgrade KotlinX Coroutines library from 1.8.1 to 1.9.0.
 *   ExoPlayer:
 *   Transformer:
     *   Add `MediaProjectionAssetLoader`, which provides media from a

build.gradle

@@ -19,7 +19,8 @@ buildscript {
     dependencies {
         classpath 'com.android.tools.build:gradle:8.3.2'
         classpath 'com.google.android.gms:strict-version-matcher-plugin:1.2.4'
-        classpath 'org.jetbrains.kotlin:kotlin-gradle-plugin:1.9.10'
+        classpath 'org.jetbrains.kotlin:kotlin-gradle-plugin:2.0.20'
+        classpath 'org.jetbrains.kotlin:compose-compiler-gradle-plugin:2.0.20'
     }
 }
 allprojects {

constants.gradle

@@ -30,7 +30,8 @@ project.ext {
     // https://cs.android.com/android/platform/superproject/main/+/main:external/guava/METADATA
     guavaVersion = '33.3.1-android'
     glideVersion = '4.14.2'
-    kotlinxCoroutinesVersion = '1.8.1'
+    // Not the same as kotlin version, https://github.com/Kotlin/kotlinx.coroutines/releases
+    kotlinxCoroutinesVersion = '1.9.0'
     leakCanaryVersion = '2.10'
     mockitoVersion = '3.12.4'
     robolectricVersion = '4.14.1'

demos/compose/build.gradle

@@ -14,6 +14,7 @@
 apply from: '../../constants.gradle'
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
+apply plugin: 'org.jetbrains.kotlin.plugin.compose'
 
 android {
     namespace 'androidx.media3.demo.compose'
@@ -54,9 +55,6 @@ android {
     buildFeatures {
         compose true
     }
-    composeOptions {
-        kotlinCompilerExtensionVersion = "1.5.3"
-    }
 
     testOptions {
         unitTests {

demos/effect/build.gradle

@@ -14,6 +14,7 @@
 apply from: '../../constants.gradle'
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
+apply plugin: 'org.jetbrains.kotlin.plugin.compose'
 
 android {
     namespace 'androidx.media3.demo.effect'
@@ -54,10 +55,6 @@ android {
     buildFeatures {
         compose true
     }
-    composeOptions {
-        kotlinCompilerExtensionVersion = "1.5.3"
-    }
-
     testOptions {
         unitTests {
             includeAndroidResources = true

libraries/common_ktx/build.gradle

@@ -12,6 +12,9 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+
+
 apply from: "$gradle.ext.androidxMediaSettingsDir/common_library_config.gradle"
 apply plugin: 'kotlin-android'
 
@@ -33,9 +36,10 @@ android {
             includeAndroidResources = true
         }
     }
-
-    kotlinOptions {
-        jvmTarget = '1.8'
+    kotlin {
+        compilerOptions {
+            jvmTarget.set(JvmTarget.JVM_1_8)
+        }
     }
 }
 

libraries/ui_compose/build.gradle

@@ -12,8 +12,11 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+
 apply from: "$gradle.ext.androidxMediaSettingsDir/common_library_config.gradle"
 apply plugin: 'kotlin-android'
+apply plugin: 'org.jetbrains.kotlin.plugin.compose'
 
 android {
     namespace 'androidx.media3.ui.compose'
@@ -36,13 +39,10 @@ android {
             includeAndroidResources = true
         }
     }
-
-    kotlinOptions {
-        jvmTarget = '1.8'
-    }
-    // https://developer.android.com/jetpack/androidx/releases/compose-kotlin#pre-release_kotlin_compatibility
-    composeOptions {
-        kotlinCompilerExtensionVersion = "1.5.3"
+    kotlin {
+        compilerOptions {
+            jvmTarget.set(JvmTarget.JVM_1_8)
+        }
     }
 }