truongsinh

Object getInput() {
  final dynamic input = [];
  return input..add(2)..add(4)..add(55);
}
void main() async {
  final List<int> result = getInput() as List<int>; // fail with `CastError: type 'List<dynamic>' is not a subtype of type 'List<int>'`
  print(result);
}

truongsinh

Object getInput() {
  final dynamic input = [];
  return input..add(2)..add(4)..add(55);
}
void main() async {
  final List<int> result = (getInput() as List<dynamic>).cast<int>();
  print(result);
}

truongsinh

class Person {
  String name;
  List<UsaAddress> addresses;
  List<Person> supervisorOf;
}

class UsaAddress {
  String streetNameAndNumber; // nevermind validation
  String streetNameAndNumber2; // nevermind validation
  String city; // nevermind validation

truongsinh

// protoc --dart_out=./lib/gen ./protos/person.proto
// protoc --swift_out=./ios/gen ./protos/person.proto

syntax = "proto3";

// `java_package` should match the package name you declare for `androidPackage` in your pubspec.yaml
option java_package = "pro.truongsinh.flutter.example.plugin_with_protobuf";;

message Person {
    string name = 1;

truongsinh

diff --git a/pubspec.yaml b/pubspec.yaml
index 207089d..c069c82 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -8,6 +8,7 @@ environment:
   sdk: ">=2.1.0 <3.0.0"
 
 dependencies:
+  protobuf: any
   flutter:

truongsinh

diff --git a/ios/plugin_with_protobuf.podspec b/ios/plugin_with_protobuf.podspec
index 8b0c4dc..ba34356 100644
--- a/ios/plugin_with_protobuf.podspec
+++ b/ios/plugin_with_protobuf.podspec
@@ -15,7 +15,8 @@ A new flutter plugin project.
   s.source_files = 'Classes/**/*'
   s.public_header_files = 'Classes/**/*.h'
   s.dependency 'Flutter'
+  s.dependency 'SwiftProtobuf', '~> 1.4'
 

truongsinh

diff --git a/ios/Classes/SwiftPluginWithProtobufPlugin.swift b/ios/Classes/SwiftPluginWithProtobufPlugin.swift
index e73d064..edbded6 100644
--- a/ios/Classes/SwiftPluginWithProtobufPlugin.swift
+++ b/ios/Classes/SwiftPluginWithProtobufPlugin.swift
@@ -1,6 +1,49 @@
 import Flutter
 import UIKit
 
+func getMyPerson() -> Person {
+    // abbr

truongsinh

diff --git a/lib/plugin_with_protobuf.dart b/lib/plugin_with_protobuf.dart
index 87a1759..a59870f 100644
--- a/lib/plugin_with_protobuf.dart
+++ b/lib/plugin_with_protobuf.dart
@@ -1,13 +1,17 @@
-import 'dart:async';
+import 'dart:typed_data' show Uint8List;
 
-import 'package:flutter/services.dart';
+import 'package:flutter/services.dart' show MethodChannel;

truongsinh

diff --git a/android/build.gradle b/android/build.gradle
index b0b0b97..d5c5c82 100644
--- a/android/build.gradle
+++ b/android/build.gradle
@@ -3,6 +3,7 @@ version '1.0-SNAPSHOT'
 
 buildscript {
     ext.kotlin_version = '1.2.71'
+    ext.protobufVersion = '0.8.8'
     repositories {

truongsinh

diff --git a/android/src/main/kotlin/com/example/plugin_with_protobuf/PluginWithProtobufPlugin.kt b/android/src/main/kotlin/com/example/plugin_with_protobuf/PluginWithProtobufPlugin.kt
index 430bbe0..0969560 100644
--- a/android/src/main/kotlin/com/example/plugin_with_protobuf/PluginWithProtobufPlugin.kt
+++ b/android/src/main/kotlin/com/example/plugin_with_protobuf/PluginWithProtobufPlugin.kt
@@ -6,6 +6,48 @@ import io.flutter.plugin.common.MethodChannel.MethodCallHandler
 import io.flutter.plugin.common.MethodChannel.Result
 import io.flutter.plugin.common.PluginRegistry.Registrar
 
+fun getMyPerson(): PersonOuterClass.Person {
+  return PersonOuterClass.Person.newBuilder()