环境配置

Xcode版本:develop for iOS and macOS (Xcode 12.2)
Flutter版本:Flutter (Channel unknown, 1.20.0, on Mac OS X 10.15.6 19G2021, locale
VS Code版本 (version 1.51.0)
说明:不同的版本Flutter 生成的工程模板不同，编译后的App.frameork目录也不同，因此进行集成时需要比对版本。
flutter在 v1.20.0 编译生成的App.frameork 已经自包含flutter_assets文件

CocoaPods 依赖 FlutterSDK私有库方式（服务器下载SDK）

此方式比较简单

1.生成framework

flutter工程:界面Flutter开发
iOS工程：已有iOS工程，被集成的项目，

指定文件同级目录下:
#flutter工程创建
flutter create -t module flutter_library

# flutter_library 下 执行
flutter build ios

#iOS 工程创建
command+shift+N

image.png

制作私有库将编译文件进行私有库打包

 pod lib create xxx // 创建私有库
 pod repo spec push xxx // 推送文件到仓库

编译产物工程

image.png

组件库工程目录

image.png

2.iOS工程配置

2.1 配置AppDelegate

AppDelegate.h
@import UIKit;
@import Flutter;
@interface AppDelegate.m : FlutterAppDelegate <UIApplicationDelegate>
@property (nonatomic,strong) FlutterEngine *flutterEngine;
@property (strong, nonatomic) UIWindow * window;
@end


AppDelegate.m
#import "AppDelegate.m.h"
#import <HLFlutterSDK_Debug/GeneratedPluginRegistrant.h>
@interface AppDelegate.m ()
@end

@implementation HLAppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    self.flutterEngine = [[FlutterEngine alloc] initWithName:@"Flutter Demo"];
    [self.flutterEngine run];
    [GeneratedPluginRegistrant registerWithRegistry:self.flutterEngine];
    return [super application:application didFinishLaunchingWithOptions:launchOptions];
}
@end

2.2 配置点击入口文件

#import "ViewController.h"
#import <Flutter/Flutter.h>
@interface ViewController ()
@end
@implementation ViewController
- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
    FlutterViewController* flutterViewController = [[FlutterViewController alloc] initWithProject:nil nibName:nil bundle:nil];
    flutterViewController.navigationItem.title = @"Flutter Demo";
    [self presentViewController:flutterViewController animated:YES completion:nil];
}
@end

2.3 配置工程Podfile

use_frameworks!
platform :ios, '9.0'
target 'HLFlutterSDK_Example' do
  pod 'HLFlutterSDK-Debug', :path => '../'
end

然后执行pod install 生成对应目录
运行项目，点击事件即可加载flutter界面，

3.注意点

1. Xcode无需再配置
   "$FLUTTER_ROOT/packages/flutter_tools/bin/xcode_backend.sh" build
2. 注意Flutter.dart标题匹配
   flutterViewController.navigationItem.title = @"Flutter Demo";
3. 运行错误，
   Dart Error: Can't load Kernel binary: Invalid kernel binary format version.
   对应目录下重新执行： flutter build ios --debug
4. 更新问题
   这种配置无法更新flutter界面，重启也不行，如果想更新需要重新升级App.framework，重新升版本

iOS现有工程集成Flutter（一）
iOS现有工程集成Flutter（二）

参考地址

环境搭建:https://www.jianshu.com/p/969aa7e37827
官方文档https://flutter.cn/docs/development/add-to-app/ios/project-setup