Integrate Android example (#275)

* Upgrade Gradle version to 8.0
* Refactor Android example
* Add 2 Android gradle plugins (without applying) to the root build (haven't managed to isolate them in Android example module)
* Add android.useAndroidX property to the root gradle.properties (for some reason defining this property in the Android submodule doesn't work)
* Add libp2p.gradle.custom per project property which indicates whether common gradle code for submodules should be skipped (set it up for Adnroid example)
* Move Maven repositories definitions to settings.gradle
* In the settings.gradle detect if Android SDK is installed and conditionally include :examples:android-chatter module
* Add Setup Android SDK GitHub action

.github/workflows/build.yml

@@ -16,5 +16,8 @@ jobs:
       - name: Setup Gradle
         uses: gradle/gradle-build-action@v2
 
+      - name: Setup Android SDK
+        uses: android-actions/setup-android@v2
+
       - name: Execute Gradle build
         run: ./gradlew -s build dokkaJar

build.gradle.kts

@@ -8,7 +8,9 @@ import java.net.URL
 description = "a minimal implementation of libp2p for the jvm"
 
 plugins {
-    kotlin("jvm").version("1.6.21")
+    val kotlinVersion = "1.6.21"
+
+    id("org.jetbrains.kotlin.jvm") version kotlinVersion apply false
 
     id("com.github.ben-manes.versions").version("0.44.0")
     id("idea")
@@ -19,28 +21,35 @@ plugins {
     id("org.jmailen.kotlinter").version("3.10.0")
     id("java-test-fixtures")
     id("io.spring.dependency-management").version("1.1.0")
+
+    id("org.jetbrains.kotlin.android") version kotlinVersion apply false
+    id("com.android.application") version "7.4.2" apply false
 }
 
-allprojects {
+fun Project.getBooleanPropertyOrFalse(propName: String) =
+    (this.properties[propName] as? String)?.toBoolean() ?: false
+
+configure(
+    allprojects
+        .filterNot {
+            it.getBooleanPropertyOrFalse("libp2p.gradle.custom")
+        }
+) {
     group = "io.libp2p"
     version = "develop"
 
     apply(plugin = "kotlin")
     apply(plugin = "idea")
-    apply(plugin = "io.gitlab.arturbosch.detekt")
     apply(plugin = "java")
+
+    apply(plugin = "io.gitlab.arturbosch.detekt")
     apply(plugin = "maven-publish")
     apply(plugin = "org.jetbrains.dokka")
     apply(plugin = "org.jmailen.kotlinter")
     apply(plugin = "java-test-fixtures")
     apply(plugin = "io.spring.dependency-management")
     apply(from = "$rootDir/versions.gradle")
 
-    repositories {
-        mavenCentral()
-        maven("https://artifacts.consensys.net/public/maven/maven/")
-    }
-
     dependencies {
 
         implementation(kotlin("stdlib-jdk8"))

examples/android-chatter/build.gradle

@@ -1,32 +1,16 @@
-buildscript {
-    ext.kotlin_version = '1.3.50'
-    repositories {
-        google()
-        jcenter()
+apply plugin: "com.android.application"
+apply plugin: "org.jetbrains.kotlin.android"
 
-    }
-    dependencies {
-        classpath 'com.android.tools.build:gradle:3.5.3'
-        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
-    }
-}
-
-repositories {
-  google()
-}
-
-apply plugin: 'com.android.application'
-
-apply plugin: 'kotlin-android'
-
-apply plugin: 'kotlin-android-extensions'
+apply plugin: "io.spring.dependency-management"
+apply from: "$rootDir/versions.gradle"
 
 android {
-    compileSdkVersion 28
+    namespace = "io.libp2p.example.chat"
+    compileSdkVersion 30
     defaultConfig {
-        applicationId "io.libp2p.example.chatter"
-        minSdkVersion 28
-        targetSdkVersion 28
+        applicationId "io.libp2p.example.chat"
+        minSdkVersion 26
+        targetSdkVersion 30
         versionCode 1
         versionName "1.0"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
@@ -38,20 +22,24 @@ android {
         }
     }
     packagingOptions {
-        exclude 'META-INF/DEPENDENCIES'
+        exclude 'META-INF/io.netty.versions.properties'
+        exclude 'META-INF/INDEX.LIST'
+    }
+    kotlinOptions {
+        jvmTarget = "11"
     }
     compileOptions {
-        sourceCompatibility = 1.8
-        targetCompatibility = 1.8
+        sourceCompatibility = 1.11
+        targetCompatibility = 1.11
+    }
+    lint {
+        abortOnError = false
     }
 }
 
 dependencies {
-    implementation fileTree(dir: 'libs', include: ['*.jar'])
-    implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
-    implementation 'androidx.appcompat:appcompat:1.1.0'
-    implementation 'androidx.core:core-ktx:1.1.0'
-    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
-    implementation project(':chatter')
-    annotationProcessor 'org.apache.logging.log4j:log4j-core:2.11.2'
+    implementation("androidx.appcompat:appcompat:1.2.0")
+    implementation("com.google.android.material:material:1.2.0")
+    implementation("androidx.constraintlayout:constraintlayout:2.0.4")
+    implementation project(':examples:chatter')
 }

examples/android-chatter/gradle.properties

@@ -0,0 +1 @@
+libp2p.gradle.custom = true

examples/android-chatter/src/main/AndroidManifest.xml

@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="io.libp2p.example.chat">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
 
     <application
         android:allowBackup="true"

examples/android-chatter/src/main/java/io/libp2p/example/chat/MainActivity.kt

@@ -10,7 +10,6 @@ import android.widget.TextView
 import androidx.appcompat.app.AppCompatActivity
 import java.util.concurrent.CompletableFuture.runAsync
 
-
 class MainActivity : AppCompatActivity() {
     private lateinit var chatScroller: ScrollView
     private lateinit var chatWindow: TextView

gradle.properties

@@ -1,3 +1,4 @@
 kotlin.code.style=official
 
-org.gradle.jvmargs=-Xmx1G
+org.gradle.jvmargs=-Xmx1G
+android.useAndroidX=true

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
+#Thu May 11 18:05:55 GST 2023
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionSha256Sum=7ba68c54029790ab444b39d7e293d3236b2632631fb5f2e012bb28b4ff669e4b
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.6-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.0-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists