import 'package:http_certificate_pinning/http_certificate_pinning.dart';
  
  // Add CertificatePinningInterceptor in dio Client
  Dio getClient(String baseUrl, List<String> allowedSHAFingerprints){
      var dio =  Dio(BaseOptions(baseUrl: baseUrl))
        ..interceptors.add(CertificatePinningInterceptor(allowedSHAFingerprints));
      return dio;
  }

  myRepositoryMethod(){ 
    dio.get("myurl.com");
  }    

import 'package:http_certificate_pinning/secure_http_client.dart';
  
  // Uses SecureHttpClient to make requests
  SecureHttpClient getClient(List<String> allowedSHAFingerprints){
      final secureClient = SecureHttpClient.build(certificateSHA256Fingerprints);
      return secureClient;
  }

  myRepositoryMethod(){ 
    secureClient.get("myurl.com");
  }    

import 'package:http_certificate_pinning/http_certificate_pinning.dart';
  
Future myCustomImplementation(String url, Map<String,String> headers, List<String> allowedSHAFingerprints) async {
  try{
    final secure = await HttpCertificatePinning.check(
      serverURL: url,
      headerHttp: headers,
      sha: SHA.SHA256,
      allowedSHAFingerprints:allowedSHAFingerprints,
      timeout : 50
    );

    if(secure.contains("CONNECTION_SECURE")){
      return true;
    }else{
      return false;
    }
  }catch(e){
    return false;
  }
}