Fix Android Example App (#900)

* Add Android Example App to CI

* Fix up Android Same App buildfile

Author: jkmassel

.buildkite/pipeline.yml

@@ -204,6 +204,23 @@ steps:
         agents:
           queue: android
 
+      - label: ":android: Build Example App"
+        plugins: [$CI_TOOLKIT]
+        command: |
+          echo "--- :rust: Installing Rust"
+          curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -v -y
+
+          source "$$HOME/.cargo/env"
+
+          echo "--- :package: Installing Rust Toolchains"
+          make setup-rust
+          make setup-rust-android-targets
+
+          echo "--- :android: Building Sample App"
+          ./native/kotlin/gradlew -p native/kotlin :example:composeApp:assembleDebug
+        agents:
+          queue: android
+
   # Docker Group
   - group: ":wordpress: End-to-end Tests"
     key: "e2e"

native/kotlin/example/composeApp/build.gradle.kts

@@ -1,5 +1,7 @@
 import org.jetbrains.compose.desktop.application.dsl.TargetFormat
 import org.jetbrains.kotlin.gradle.ExperimentalKotlinGradlePluginApi
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+import org.jetbrains.kotlin.gradle.tasks.KotlinJvmCompile
 
 plugins {
     alias(libs.plugins.kotlinMultiplatform)
@@ -8,12 +10,10 @@ plugins {
     alias(libs.plugins.compose.compiler)
 }
 
-import org.jetbrains.kotlin.gradle.dsl.JvmTarget
-import org.jetbrains.kotlin.gradle.tasks.KotlinJvmCompile
 
 tasks.withType<KotlinJvmCompile>().configureEach {
   compilerOptions {
-    jvmTarget.set(JvmTarget.JVM_11)
+    jvmTarget.set(JvmTarget.JVM_21)
     freeCompilerArgs.add("-opt-in=kotlin.RequiresOptIn")
   }
 }
@@ -91,8 +91,8 @@ android {
         }
     }
     compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_11
-        targetCompatibility = JavaVersion.VERSION_11
+        sourceCompatibility = JavaVersion.VERSION_21
+        targetCompatibility = JavaVersion.VERSION_21
     }
     buildFeatures {
         compose = true