work-in-progress-do not review - add pbl snippets

gradle/libs.versions.toml

@@ -36,6 +36,7 @@ androidx-xr-scenecore = "1.0.0-alpha10"
 androidxHiltNavigationCompose = "1.3.0"
 appcompat = "1.7.1"
 arcorePlayServices = "1.0.0-alpha09"
+playbilling = "8.3.0"
 coil = "2.7.0"
 # @keep
 compileSdk = "36"
@@ -98,6 +99,7 @@ wearToolingPreview = "1.0.0"
 webkit = "1.14.0"
 wearPhoneInteractions = "1.1.0"
 wearRemoteInteractions = "1.1.0"
+runtime = "1.10.0"
 
 [libraries]
 accompanist-adaptive = "com.google.accompanist:accompanist-adaptive:0.37.3"
@@ -202,6 +204,7 @@ androidx-xr-arcore = { module = "androidx.xr.arcore:arcore", version.ref = "andr
 androidx-xr-compose = { module = "androidx.xr.compose:compose", version.ref = "androidx-xr-compose" }
 androidx-xr-scenecore = { module = "androidx.xr.scenecore:scenecore", version.ref = "androidx-xr-scenecore" }
 appcompat = { module = "androidx.appcompat:appcompat", version.ref = "appcompat" }
+billing = { module = "com.android.billingclient:billing", version.ref = "playbilling" }
 coil-kt-compose = { module = "io.coil-kt:coil-compose", version.ref = "coil" }
 compose-foundation = { module = "androidx.wear.compose:compose-foundation", version.ref = "wearComposeFoundation" }
 compose-ui-tooling = { module = "androidx.wear.compose:compose-ui-tooling", version.ref = "composeUiTooling" }
@@ -241,6 +244,7 @@ wear-compose-material = { module = "androidx.wear.compose:compose-material", ver
 wear-compose-material3 = { module = "androidx.wear.compose:compose-material3", version.ref = "wearComposeMaterial3" }
 androidx-wear-phone-interactions = { group = "androidx.wear", name = "wear-phone-interactions", version.ref = "wearPhoneInteractions" }
 androidx-wear-remote-interactions = { group = "androidx.wear", name = "wear-remote-interactions", version.ref = "wearRemoteInteractions" }
+androidx-runtime = { group = "androidx.compose.runtime", name = "runtime", version.ref = "runtime" }
 
 [plugins]
 android-application = { id = "com.android.application", version.ref = "androidGradlePlugin" }

playbilling/.gitignore

@@ -0,0 +1 @@
+/build

playbilling/build.gradle

@@ -0,0 +1,44 @@
+plugins {
+    alias(libs.plugins.android.application)
+}
+
+android {
+    namespace 'com.example.pbl'
+    compileSdk {
+        version = release(36) {
+            minorApiLevel = 1
+        }
+    }
+
+    defaultConfig {
+        applicationId "com.example.pbl"
+        minSdk 24
+        targetSdk 36
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_17
+        targetCompatibility JavaVersion.VERSION_17
+    }
+}
+
+dependencies {
+    implementation libs.guava
+    implementation libs.billing
+    implementation libs.androidx.appcompat
+    implementation libs.google.android.material
+    implementation libs.androidx.runtime
+    testImplementation libs.junit
+    androidTestImplementation libs.androidx.test.ext.junit
+    androidTestImplementation libs.androidx.test.espresso.core
+}

playbilling/proguard-rules.pro

@@ -0,0 +1,21 @@
+# 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

playbilling/src/androidTest/java/com/example/pbl/ExampleInstrumentedTest.java

@@ -0,0 +1,26 @@
+package com.example.pbl;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        assertEquals("com.example.pbl", appContext.getPackageName());
+    }
+}

playbilling/src/main/AndroidManifest.xml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright 2026 The Android Open Source Project
+
+     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
+
+          https://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.
+-->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <application
+        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.Snippets" />
+
+</manifest>