大幅変更＆環境バージョンアップ

plugin/qr_code_scanner/android/build.gradle

@@ -0,0 +1,64 @@
+group 'net.touchcapture.qr.flutterqr'
+version '1.0-SNAPSHOT'
+
+buildscript {
+    ext.kotlin_version = '1.8.22' //''1.9.0'
+    repositories {
+        google()
+        mavenCentral()
+    }
+
+    dependencies {
+        classpath 'com.android.tools.build:gradle:8.3.0'  //8.1.0'
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+    }
+}
+
+rootProject.allprojects {
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+
+apply plugin: 'com.android.library'
+apply plugin: 'kotlin-android'
+
+android {
+    namespace 'net.touchcapture.qr.flutterqr'
+    compileSdk 34
+
+    sourceSets {
+        main.java.srcDirs += 'src/main/kotlin'
+    }
+    defaultConfig {
+        // minSdkVersion is determined by Native View.
+        minSdkVersion 20
+        targetSdkVersion 34
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+        multiDexEnabled true
+    }
+
+    kotlinOptions {
+        jvmTarget = '11'
+    }
+
+    compileOptions {
+        // Flag to enable support for the new language APIs
+        coreLibraryDesugaringEnabled true
+        // Sets Java compatibility to Java 11
+        sourceCompatibility JavaVersion.VERSION_11
+        targetCompatibility JavaVersion.VERSION_11
+    }
+    if (project.android.hasProperty('namespace')) {
+        namespace 'net.touchcapture.qr.flutterqr'
+    }
+}
+
+dependencies {
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+    implementation('com.journeyapps:zxing-android-embedded:4.3.0') { transitive = false }
+    implementation 'androidx.appcompat:appcompat:1.6.1'
+    implementation 'com.google.zxing:core:3.5.2'
+    coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:2.0.3'
+}