upgrade gecko. gradle, deps

packages/flutter_singbox_proxy/android/build.gradle

@@ -2,15 +2,13 @@ group = "eu.weblibre.flutter_singbox_proxy"
 version = "1.0-SNAPSHOT"
 
 buildscript {
-    ext.kotlin_version = "2.3.21"
     repositories {
         google()
         mavenCentral()
     }
 
     dependencies {
-        classpath("com.android.tools.build:gradle:8.13.2")
-        classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version")
+        classpath("com.android.tools.build:gradle:9.2.1")
     }
 }
 
@@ -32,21 +30,16 @@ def requireWebLibreGoMobileAar = {
 }
 
 apply plugin: "com.android.library"
-apply plugin: "kotlin-android"
 
 android {
     namespace = "eu.weblibre.flutter_singbox_proxy"
-    compileSdk = 36
+    compileSdk = 37
 
     compileOptions {
         sourceCompatibility = JavaVersion.VERSION_17
         targetCompatibility = JavaVersion.VERSION_17
     }
 
-    kotlinOptions {
-        jvmTarget = JavaVersion.VERSION_17
-    }
-
     sourceSets {
         main.java.srcDirs += "src/main/kotlin"
         test.java.srcDirs += "src/test/kotlin"
@@ -69,13 +62,19 @@ android {
     }
 }
 
+kotlin {
+    compilerOptions {
+        jvmTarget = org.jetbrains.kotlin.gradle.dsl.JvmTarget.JVM_17
+    }
+}
+
 dependencies {
     requireWebLibreGoMobileAar()
     compileOnly(files(weblibreGoMobileAar))
 
-    implementation("com.squareup.okhttp3:okhttp:4.12.0")
+    implementation("com.squareup.okhttp3:okhttp:5.4.0")
 
-    testImplementation("org.json:json:20250517")
+    testImplementation("org.json:json:20260522")
     testImplementation("org.jetbrains.kotlin:kotlin-test")
     testImplementation("org.mockito:mockito-core:5.23.0")
 }

packages/flutter_singbox_proxy/example/android/app/build.gradle

@@ -1,12 +1,11 @@
 plugins {
     id "com.android.application"
-    id "kotlin-android"
     id "dev.flutter.flutter-gradle-plugin"
 }
 
 android {
     namespace = "eu.weblibre.flutter_singbox_proxy_example"
-    compileSdk = flutter.compileSdkVersion
+    compileSdk = 37
     ndkVersion = flutter.ndkVersion
 
     compileOptions {
@@ -14,10 +13,6 @@ android {
         targetCompatibility = JavaVersion.VERSION_17
     }
 
-    kotlinOptions {
-        jvmTarget = JavaVersion.VERSION_17
-    }
-
     defaultConfig {
         applicationId = "eu.weblibre.flutter_singbox_proxy_example"
         minSdk = flutter.minSdkVersion
@@ -33,6 +28,12 @@ android {
     }
 }
 
+kotlin {
+    compilerOptions {
+        jvmTarget = org.jetbrains.kotlin.gradle.dsl.JvmTarget.JVM_17
+    }
+}
+
 flutter {
     source = "../.."
 }

packages/flutter_singbox_proxy/example/android/build.gradle

@@ -5,7 +5,7 @@ allprojects {
     }
 }
 
-rootProject.buildDir = "../../build"
+rootProject.buildDir = "../build"
 subprojects {
     project.buildDir = "${rootProject.buildDir}/${project.name}"
 }

packages/flutter_singbox_proxy/example/android/gradle.properties

@@ -1,2 +1,4 @@
 org.gradle.jvmargs=-Xmx8G -XX:MaxMetaspaceSize=4G -XX:ReservedCodeCacheSize=512m -XX:+HeapDumpOnOutOfMemoryError
 android.useAndroidX=true
+android.builtInKotlin=false
+android.newDsl=false

packages/flutter_singbox_proxy/example/android/gradle/wrapper/gradle-wrapper.properties

@@ -2,4 +2,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.14.4-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.6.1-bin.zip

packages/flutter_singbox_proxy/example/android/settings.gradle

@@ -18,8 +18,8 @@ pluginManagement {
 
 plugins {
     id "dev.flutter.flutter-plugin-loader" version "1.0.0"
-    id "com.android.application" version "8.13.2" apply false
-    id "org.jetbrains.kotlin.android" version "2.3.21" apply false
+    id "com.android.application" version "9.2.1" apply false
+    id "org.jetbrains.kotlin.android" version "2.4.0" apply false
 }
 
 include ":app"