trackoffical_app/lib/appcore/ffi.dart

import 'dart:ffi';
import 'bridge_generated.dart';
export 'bridge_generated.dart';

import 'dart:io' as io;

const _base = 'appcore';

AppCoreApi? _apiInstance;
init({bool isTest=false}){
  var dylib = io.Platform.isWindows ? '$_base.dll' : 'lib$_base.so';
  if(isTest){
    dylib = './third_party/appcore/target/release/$dylib';
  }

  _apiInstance = AppCoreApiImpl(io.Platform.isIOS || io.Platform.isMacOS
      ? DynamicLibrary.executable()
      : DynamicLibrary.open(dylib));
}

AppCoreApi get api {
  if(_apiInstance==null){
    init();
  }
  return _apiInstance!;
}