fix: Fix build

android/CMakeLists.txt

@@ -2,36 +2,45 @@ cmake_minimum_required(VERSION 3.9.0)
 
 add_subdirectory(../MMKV/Core Core)
 
+set (PACKAGE_NAME "react-native-mmkv")
+set (BUILD_DIR ${CMAKE_SOURCE_DIR}/build)
+
 include_directories(
         ../MMKV/Core
         ../../react-native/React
         ../../react-native/React/Base
         ../../react-native/ReactCommon/jsi
 )
 
-add_library(mmkvnative  # <-- Library name
+add_library(reactnativemmkv  # <-- Library name
         SHARED
-        # Provides a relative path to your source file(s).
-        ../../react-native/ReactCommon/jsi/jsi/jsi.cpp
         cpp-adapter.cpp
 )
 
 set_target_properties(
-        mmkvnative PROPERTIES
+        reactnativemmkv PROPERTIES
         CXX_STANDARD 17
         CXX_EXTENSIONS OFF
         POSITION_INDEPENDENT_CODE ON
 )
 
+file (GLOB LIBRN_DIR "${BUILD_DIR}/react-native-0*/jni/${ANDROID_ABI}")
 
 find_library(
-        log-lib # Sets the name of the path variable.
+        log-lib
         log
 )
+find_library(
+        REACT_NATIVE_JNI_LIB
+        reactnativejni
+        PATHS ${LIBRN_DIR}
+        NO_CMAKE_FIND_ROOT_PATH
+)
 
 target_link_libraries(
-        mmkvnative
+        reactnativemmkv
         core
         ${log-lib}
+        ${REACT_NATIVE_JNI_LIB}
         android
 )

android/build.gradle

@@ -22,6 +22,7 @@ def getExtOrIntegerDefault(name) {
 android {
   compileSdkVersion getExtOrIntegerDefault('compileSdkVersion')
   buildToolsVersion getExtOrDefault('buildToolsVersion')
+  ndkVersion getExtOrDefault('ndkVersion')
 
   defaultConfig {
     minSdkVersion 16
@@ -56,6 +57,10 @@ android {
     sourceCompatibility JavaVersion.VERSION_1_8
     targetCompatibility JavaVersion.VERSION_1_8
   }
+
+  configurations {
+    extractJNI
+  }
 }
 
 repositories {
@@ -132,4 +137,27 @@ repositories {
 dependencies {
   // noinspection GradleDynamicVersion
   api 'com.facebook.react:react-native:+'
+
+  def rnAAR = fileTree("${rootDir}/../node_modules/react-native/android").matching({ it.include "**/**/*.aar" }).singleFile
+  extractJNI(files(rnAAR))
+}
+
+task extractJNIFiles {
+  doLast {
+    configurations.extractJNI.files.each {
+      def file = it.absoluteFile
+
+      copy {
+        from zipTree(file)
+        into "$buildDir/$file.name"
+        include "jni/**/*"
+      }
+    }
+  }
+}
+
+tasks.whenTaskAdded { task ->
+  if (task.name.contains('externalNativeBuild')) {
+    task.dependsOn(extractJNIFiles)
+  }
 }

android/src/main/java/com/reactnativemmkv/MmkvModule.java

@@ -7,7 +7,7 @@
 
 public class MmkvModule extends ReactContextBaseJavaModule {
   static {
-    System.loadLibrary("mmkvnative");
+    System.loadLibrary("reactnativemmkv");
   }
 
   private static native void nativeInstall(long jsiPtr, String path);