build: update android gradle plugin to 8.7

.github/workflows/publish-android.yaml

@@ -1,10 +1,6 @@
 name: Publish bdk-android to Maven Central
 on: [workflow_dispatch]
 
-# The default Android NDK on the ubuntu-22.04 image is 25.2.9519653
-env:
-  ANDROID_NDK_HOME: /usr/local/lib/android/sdk/ndk/25.2.9519653
-
 jobs:
   build:
     runs-on: ubuntu-20.04
@@ -25,7 +21,7 @@ jobs:
         uses: actions/setup-java@v3
         with:
           distribution: temurin
-          java-version: 11
+          java-version: 17
 
       - name: "Set default Rust version to 1.77.1"
         run: rustup default 1.77.1

bdk-android/build.gradle.kts

@@ -1,14 +1,9 @@
-buildscript {
-    repositories {
-        google()
-    }
-    dependencies {
-        classpath("com.android.tools.build:gradle:7.1.2")
-    }
-}
-
 plugins {
-    id("io.github.gradle-nexus.publish-plugin") version "1.1.0"
+    id("com.android.library").version("8.3.1").apply(false)
+    id("org.jetbrains.kotlin.android").version("1.9.23").apply(false)
+    id("org.gradle.maven-publish")
+    id("org.gradle.signing")
+    id("io.github.gradle-nexus.publish-plugin").version("1.1.0").apply(true)
 }
 
 // library version is defined in gradle.properties

bdk-android/gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.3.2-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.7-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

bdk-android/lib/build.gradle.kts

@@ -1,29 +1,24 @@
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 
-// library version is defined in gradle.properties
-val libraryVersion: String by project
-
 plugins {
     id("com.android.library")
-    id("org.jetbrains.kotlin.android") version "1.9.23"
-    id("maven-publish")
-    id("signing")
+    id("org.jetbrains.kotlin.android")
+    id("org.gradle.maven-publish")
+    id("org.gradle.signing")
 
     // Custom plugin to generate the native libs and bindings file
     id("org.bitcoindevkit.plugins.generate-android-bindings")
 }
 
-repositories {
-    mavenCentral()
-    google()
-}
+// library version is defined in gradle.properties
+val libraryVersion: String by project
 
 android {
-    compileSdk = 31
+    namespace = "org.bitcoindevkit"
+    compileSdk = 34
 
     defaultConfig {
-        minSdk = 21
-        targetSdk = 31
+        minSdk = 24
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
         consumerProguardFiles("consumer-rules.pro")
     }
@@ -43,6 +38,20 @@ android {
     }
 }
 
+kotlin {
+    tasks.withType<KotlinCompile>().configureEach {
+        kotlinOptions {
+            jvmTarget = "17"
+        }
+    }
+}
+
+java {
+    toolchain {
+        languageVersion.set(JavaLanguageVersion.of(17))
+    }
+}
+
 dependencies {
     implementation("net.java.dev.jna:jna:5.14.0@aar")
     implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk7")
@@ -103,6 +112,10 @@ afterEvaluate {
 }
 
 signing {
+    if (project.hasProperty("localBuild")) {
+        isRequired = false
+    }
+
     val signingKeyId: String? by project
     val signingKey: String? by project
     val signingPassword: String? by project
@@ -115,3 +128,9 @@ signing {
 tasks.withType<KotlinCompile> {
     dependsOn("buildAndroidLib")
 }
+
+afterEvaluate {
+    tasks.named("mergeReleaseJniLibFolders") {
+        mustRunAfter(tasks.named("moveNativeAndroidLibs"))
+    }
+}

bdk-android/settings.gradle.kts

@@ -2,3 +2,17 @@ rootProject.name = "bdk-android"
 
 include(":lib")
 includeBuild("plugins")
+
+pluginManagement {
+    repositories {
+        gradlePluginPortal()
+        google()
+    }
+}
+
+dependencyResolutionManagement {
+    repositories {
+        mavenCentral()
+        google()
+    }
+}