Added Jetpack Compose Native Ad Sample.

PiperOrigin-RevId: 625460774

kotlin/advanced/JetpackComposeDemo/app/build.gradle.kts

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+plugins {
+  id("com.android.application")
+  id("org.jetbrains.kotlin.android")
+}
+
+android {
+  namespace = "com.example.jetpackcomposedemo"
+  compileSdk = 34
+
+  defaultConfig {
+    applicationId = "com.google.android.gms.example.jetpackcomposedemo"
+    minSdk = 24
+    targetSdk = 34
+    versionCode = 1
+    versionName = "1.0"
+
+    testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+    vectorDrawables { useSupportLibrary = true }
+  }
+
+  buildTypes {
+    release {
+      isMinifyEnabled = false
+      proguardFiles(getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro")
+    }
+  }
+  compileOptions {
+    sourceCompatibility = JavaVersion.VERSION_1_8
+    targetCompatibility = JavaVersion.VERSION_1_8
+  }
+  kotlinOptions { jvmTarget = "1.8" }
+  buildFeatures {
+    compose = true
+    viewBinding = true
+  }
+  composeOptions { kotlinCompilerExtensionVersion = "1.5.1" }
+  packaging { resources { excludes += "/META-INF/{AL2.0,LGPL2.1}" } }
+}
+
+dependencies {
+  implementation("androidx.core:core-ktx:1.13.1")
+  implementation("androidx.lifecycle:lifecycle-runtime-ktx:2.8.0")
+  implementation("androidx.activity:activity-compose:1.9.0")
+  implementation(platform("androidx.compose:compose-bom:2024.05.00"))
+  implementation("androidx.compose.ui:ui")
+  implementation("androidx.compose.ui:ui-graphics")
+  implementation("androidx.compose.ui:ui-tooling-preview")
+  implementation("androidx.compose.material3:material3")
+  implementation("com.google.android.gms:play-services-ads:23.1.0")
+  implementation("com.google.android.ump:user-messaging-platform:2.2.0")
+  implementation("com.google.android.gms:play-services-ads-lite:23.1.0")
+  testImplementation("junit:junit:4.13.2")
+  androidTestImplementation("androidx.test.ext:junit:1.1.5")
+  androidTestImplementation("androidx.test.espresso:espresso-core:3.5.1")
+  androidTestImplementation(platform("androidx.compose:compose-bom:2024.05.00"))
+  androidTestImplementation("androidx.compose.ui:ui-test-junit4")
+  debugImplementation("androidx.compose.ui:ui-tooling")
+  debugImplementation("androidx.compose.ui:ui-test-manifest")
+}

kotlin/advanced/JetpackComposeDemo/app/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

kotlin/advanced/JetpackComposeDemo/app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
+
+  <application
+      android:taskAffinity=""
+      android:name="com.google.android.gms.example.jetpackcomposedemo.MobileAdsApplication"
+      android:allowBackup="true"
+      android:icon="@mipmap/ic_launcher"
+      android:label="@string/app_name"
+      android:roundIcon="@mipmap/ic_launcher_round"
+      android:supportsRtl="true"
+      android:theme="@style/Theme.JetpackComposeDemo"
+      tools:targetApi="31">
+    <meta-data
+        android:name="com.google.android.gms.ads.APPLICATION_ID"
+        android:value="ca-app-pub-3940256099942544~3347511713" />
+    <activity
+        android:name="com.google.android.gms.example.jetpackcomposedemo.MainActivity"
+        android:exported="true"
+        android:theme="@style/Theme.JetpackComposeDemo">
+      <intent-filter>
+        <action android:name="android.intent.action.MAIN" />
+        <category android:name="android.intent.category.LAUNCHER" />
+      </intent-filter>
+    </activity>
+    <activity
+        android:name="com.google.android.gms.example.jetpackcomposedemo.BannerActivity"
+        android:exported="true"
+        android:theme="@style/Theme.JetpackComposeDemo">
+    </activity>
+    <activity
+        android:name="com.google.android.gms.example.jetpackcomposedemo.NativeActivity"
+        android:exported="true"
+        android:theme="@style/Theme.JetpackComposeDemo">
+    </activity>
+  </application>
+
+</manifest>

kotlin/advanced/JetpackComposeDemo/app/src/main/java/com/google/android/gms/example/jetpackcomposedemo/BannerActivity.kt

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+/*
+ * Copyright 2024 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.android.gms.example.jetpackcomposedemo
+
+import android.content.Intent
+import android.os.Bundle
+import android.util.Log
+import androidx.activity.ComponentActivity
+import androidx.activity.compose.setContent
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.fillMaxHeight
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.automirrored.filled.ArrowBack
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.material3.TopAppBar
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.tooling.preview.Preview
+import com.google.android.gms.ads.AdRequest
+import com.google.android.gms.ads.AdSize
+import com.google.android.gms.ads.LoadAdError
+import com.google.android.gms.example.jetpackcomposedemo.composables.BannerAd
+import com.google.android.gms.example.jetpackcomposedemo.composables.BannerAdState
+import com.google.android.gms.example.jetpackcomposedemo.ui.theme.ColorStateError
+import com.google.android.gms.example.jetpackcomposedemo.ui.theme.ColorStateLoaded
+import com.google.android.gms.example.jetpackcomposedemo.ui.theme.ColorStateUnloaded
+import com.google.android.gms.example.jetpackcomposedemo.ui.theme.JetpackComposeDemoTheme
+
+class BannerActivity : ComponentActivity() {
+
+  override fun onCreate(savedInstanceState: Bundle?) {
+    super.onCreate(savedInstanceState)
+    setContent {
+      JetpackComposeDemoTheme {
+        Surface(modifier = Modifier.fillMaxHeight(), color = MaterialTheme.colorScheme.background) {
+          BannerScreen()
+        }
+      }
+    }
+  }
+
+  @Preview
+  @Composable
+  fun BannerScreenPreview() {
+    JetpackComposeDemoTheme {
+      Surface(modifier = Modifier.fillMaxHeight(), color = MaterialTheme.colorScheme.background) {
+        BannerScreen()
+      }
+    }
+  }
+
+  @OptIn(ExperimentalMaterial3Api::class)
+  @Composable
+  fun BannerScreen() {
+    // Cache the mutable state for our notification bar.
+    val context = LocalContext.current
+    var messageText by remember { mutableStateOf("Banner ad is not loaded.") }
+    var messageColor by remember { mutableStateOf(ColorStateUnloaded) }
+
+    // Construct a banner ad state which configures our BannerAd composable.
+    val bannerState =
+      BannerAdState(
+        adUnitId = ADUNIT_ID,
+        adSize = AdSize.BANNER,
+        adRequest = AdRequest.Builder().build(),
+        onAdLoaded = {
+          messageColor = ColorStateLoaded
+          messageText = "Banner ad is loaded."
+          Log.i(TAG, messageText)
+        },
+        onAdFailedToLoad = { error: LoadAdError ->
+          messageColor = ColorStateError
+          messageText = "Banner ad failed to load with error: ${error.message}"
+          Log.e(TAG, messageText)
+        },
+        onAdImpression = { Log.i(TAG, "Banner ad impression.") },
+        onAdClicked = { Log.i(TAG, "Banner ad clicked.") },
+        onAdOpened = { Log.i(TAG, "Banner ad opened.") },
+        onAdClosed = { Log.i(TAG, "Banner ad closed.") },
+      )
+
+    Column(
+      modifier = Modifier.verticalScroll(rememberScrollState()),
+      content = {
+        // Render title.
+        TopAppBar(
+          title = { Text(text = "Banner ad") },
+          navigationIcon = {
+            IconButton(
+              onClick = {
+                val intent = Intent(context, MainActivity::class.java)
+                context.startActivity(intent)
+              }
+            ) {
+              Icon(Icons.AutoMirrored.Filled.ArrowBack, "Back")
+            }
+          },
+        )
+        // Render status.
+        Box(modifier = Modifier.fillMaxSize().background(messageColor)) {
+          Text(text = messageText, style = MaterialTheme.typography.bodyLarge)
+        }
+        // Render the BannerAd composable.
+        BannerAd(bannerState, modifier = Modifier)
+      },
+    )
+  }
+
+  companion object {
+    const val TAG = "GoogleMobileAdsSample"
+    // Test AdUnitID for demonstrative purposes.
+    // https://developers.google.com/admob/android/test-ads
+    const val ADUNIT_ID = "ca-app-pub-3940256099942544/6300978111"
+  }
+}