已有iOS工程中加入Flutter之Cocoapods+Flutter环境方式集成

KKdeMacBook-Pro:~ kaye$ cd Desktop/NativeFultter/

Last login: Wed Dec 25 09:05:21 on console
KKdeMacBook-Pro:~ kaye$ cd Desktop/NativeFultter/
KKdeMacBook-Pro:NativeFultter kaye$ flutter create -t module KKFlutter
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"KKFlutter" is not a valid Dart package name.

From the [Pubspec format
description](https://www.dartlang.org/tools/pub/pubspec.html):

**DO** use `lowercase_with_underscores` for package names.

Package names should be all lowercase, with underscores to separate words,
`just_like_this`.  Use only basic Latin letters and Arabic digits: [a-z0-9_].
Also, make sure the name is a valid Dart identifier -- that it doesn't start
with digits and isn't a reserved word.

KKdeMacBook-Pro:NativeFultter kaye$ flutter create -t module kk_flutter
Creating project kk_flutter... androidx: true
  kk_flutter/test/widget_test.dart (created)
  kk_flutter/kk_flutter.iml (created)
  kk_flutter/.gitignore (created)
  kk_flutter/.metadata (created)
  kk_flutter/pubspec.yaml (created)
  kk_flutter/README.md (created)
  kk_flutter/lib/main.dart (created)
  kk_flutter/kk_flutter_android.iml (created)
  kk_flutter/.idea/libraries/Flutter_for_Android.xml (created)
  kk_flutter/.idea/libraries/Dart_SDK.xml (created)
  kk_flutter/.idea/modules.xml (created)
  kk_flutter/.idea/workspace.xml (created)
Running "flutter pub get" in kk_flutter...                          2.9s
Wrote 12 files.

All done!
Your module code is in kk_flutter/lib/main.dart.
KKdeMacBook-Pro:NativeFultter kaye$ 

kk_flutter/
├─.ios/ #隐藏文件，可以使用Command+shift+. 显示隐藏文件
│ ├─Runner.xcworkspace
│ └─Flutter/podhelper.rb
├─lib/ #我们的代码都写在这个文件夹中
│ └─main.dart
├─test/
└─pubspec.yaml #flutter依赖的库，都写在这里

KKdeMacBook-Pro:kk_flutter kaye$ flutter build ios-framework --output=/Users/kaye/Desktop/ios_flutter/NativeFlutter_module/Flutterframeworks 
Building framework for com.example.kkFlutter in debug mode...
 ├─Populating Flutter.framework...                                 172ms
 ├─Add placeholder App.framework for debug...                      177ms
 ├─Assembling Flutter resources for App.framework...                6.0s
 ├─Building plugins...                                              3.2s
 └─Moving to ../NativeFlutter_module/Flutterframeworks/Debug         0.0s
Building framework for com.example.kkFlutter in profile mode...
 ├─Populating Flutter.framework...                                 124ms
 ├─Building Dart AOT for App.framework...                          20.0s
 ├─Assembling Flutter resources for App.framework...                0.1s
 ├─Building plugins...                                             10.0s
 └─Moving to ../NativeFlutter_module/Flutterframeworks/Profile         0.0s
Building framework for com.example.kkFlutter in release mode...
 ├─Populating Flutter.framework...                                 672ms
 ├─Building Dart AOT for App.framework...                          67.0s
 ├─Assembling Flutter resources for App.framework...                0.1s
 ├─Building plugins...                                              7.9s
 └─Moving to ../NativeFlutter_module/Flutterframeworks/Release         0.0s
Frameworks written to /Users/kaye/Desktop/ios_flutter/NativeFlutter_module/Flutterframeworks.

KKdeMacBook-Pro:~ kaye$ cd Desktop/NativeFultter/
KKdeMacBook-Pro:NativeFultter kaye$ ls
NativeFlutter_module    kk_flutter
KKdeMacBook-Pro:NativeFultter kaye$ cd NativeFlutter_module/
KKdeMacBook-Pro:NativeFlutter_module kaye$ ls
NativeFlutter_module        NativeFlutter_moduleTests
NativeFlutter_module.xcodeproj  NativeFlutter_moduleUITests
KKdeMacBook-Pro:NativeFlutter_module kaye$ pod init

some/path/
├── kk_flutter/ #flutter_module
│   └── .ios/
│       └── Flutter/
│         └── podhelper.rb
└── NativeFlutter_module/ #原生工程
    └── Podfile

flutter_application_path = '../kk_flutter' #这里是我们创建的flutter_module的路径
load File.join(flutter_application_path, '.ios', 'Flutter', 'podhelper.rb')

# Uncomment the next line to define a global platform for your project
platform :ios, '9.0'

flutter_application_path = '../kk_flutter' #这里是我们创建的flutter_module的路径
load File.join(flutter_application_path, '.ios', 'Flutter', 'podhelper.rb')

target 'NativeFlutter_module' do
  # Uncomment the next line if you're using Swift or would like to use dynamic frameworks
  # use_frameworks!

  # Pods for NativeFlutter_module

  install_all_flutter_pods(flutter_application_path)

  target 'NativeFlutter_moduleTests' do
    inherit! :search_paths
    # Pods for testing
  end

  target 'NativeFlutter_moduleUITests' do
    inherit! :search_paths
    # Pods for testing
  end

end

KKdeMacBook-Pro:NativeFlutter_module kaye$ pod install
Analyzing dependencies
Fetching podspec for `Flutter` from `../kk_flutter/.ios/Flutter/engine`
Fetching podspec for `FlutterPluginRegistrant` from `../kk_flutter/.ios/Flutter/FlutterPluginRegistrant`
Fetching podspec for `kk_flutter` from `../kk_flutter/.ios/Flutter`
Downloading dependencies
Installing Flutter (1.0.0)
Installing FlutterPluginRegistrant (0.0.1)
Installing kk_flutter (0.0.1)
Generating Pods project
Integrating client project

[!] Please close any current Xcode sessions and use `NativeFlutter_module.xcworkspace` for this project from now on.
Sending stats
Pod installation complete! There are 3 dependencies from the Podfile and 3 total pods installed.
KKdeMacBook-Pro:NativeFlutter_module kaye$ 

// Appdelegate.h
#import <UIKit/UIKit.h>
@import Flutter; // 导入Flutter

@interface AppDelegate : FlutterAppDelegate //UIResponder <UIApplicationDelegate>

//@property (strong, nonatomic) UIWindow *window;
@property (nonatomic, strong) FlutterEngine *flutterEngine;

@end

// AppDelegate.m
#import "AppDelegate.h"
#import <FlutterPluginRegistrant/FlutterPluginRegistrant-umbrella.h> //Used to connect plugins.

@interface AppDelegate ()
@end

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch.
    
    self.flutterEngine = [[FlutterEngine alloc] initWithName:@"MyFlutterEngine"];
    // 使用默认的Flutter路由运行默认的Dart入口点。
    // 当在AppDelegate中创建的FlutterEngine上调用run时，默认Dart库的默认main()入口点函数将运行。
    [self.flutterEngine run];
    [GeneratedPluginRegistrant registerWithRegistry:self.flutterEngine];
    
    return [super application:application didFinishLaunchingWithOptions:launchOptions];;
}

#import "ViewController.h"
#import "AppDelegate.h"
@import Flutter;

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    
    UIButton *flutterButton = [[UIButton alloc] initWithFrame:CGRectMake(100, 200, 120, 40)];
    [flutterButton setTitle:@"show flutter" forState:UIControlStateNormal];
    [flutterButton setTitleColor:[UIColor blueColor] forState:UIControlStateNormal];
    [flutterButton addTarget:self action:@selector(flutterButtonAction) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:flutterButton];
    
    [self.navigationController setNavigationBarHidden:YES];
}

- (void)flutterButtonAction {
    // 获取引擎
    FlutterEngine *flutterEngine = [(AppDelegate *)[UIApplication sharedApplication].delegate flutterEngine];
    // 创建FlutterViewController
    FlutterViewController *flutterVC = [[FlutterViewController alloc] initWithEngine:flutterEngine nibName:nil bundle:nil];
    // 跳转
    [self.navigationController pushViewController:flutterVC animated:YES];
    // 当然你也可以使用下面的方法跳转
    //[self presentViewController:flutterVC animated:YES completion:nil];
}

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    
    UIButton *flutterButton = [[UIButton alloc] initWithFrame:CGRectMake(100, 200, 120, 40)];
    [flutterButton setTitle:@"show flutter" forState:UIControlStateNormal];
    [flutterButton setTitleColor:[UIColor blueColor] forState:UIControlStateNormal];
    [flutterButton addTarget:self action:@selector(flutterButtonAction) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:flutterButton];
    
    UIButton *flutterButton2 = [[UIButton alloc] initWithFrame:CGRectMake(100, 300, 200, 40)];
    [flutterButton2 setTitle:@"隐式创建引擎" forState:UIControlStateNormal];
    [flutterButton2 setTitleColor:[UIColor blueColor] forState:UIControlStateNormal];
    [flutterButton2 addTarget:self action:@selector(createFlutterViewControllerWithImplicitFlutterEngine) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:flutterButton2];
    
    [self.navigationController setNavigationBarHidden:YES];
}

- (void)createFlutterViewControllerWithImplicitFlutterEngine {
    // 创建FlutterViewController
    FlutterViewController *flutterVC = [[FlutterViewController alloc] initWithProject:nil nibName:nil bundle:nil];
    // 跳转
    [self.navigationController pushViewController:flutterVC animated:YES];
}

// AppDelegate2.h
@import Flutter;
@import UIKit;
@import FlutterPluginRegistrant;

@interface AppDelegate : UIResponder <UIApplicationDelegate, FlutterAppLifeCycleProvider>
@property (strong, nonatomic) UIWindow *window;
@property (nonatomic,strong) FlutterEngine *flutterEngine;
@end

// AppDelegate2.m
#import "AppDelegate2.h"

@interface AppDelegate2 ()

@property (nonatomic, strong) FlutterPluginAppLifeCycleDelegate* lifeCycleDelegate;

@end

@implementation AppDelegate2

- (instancetype)init {
    if (self = [super init]) {
        _lifeCycleDelegate = [[FlutterPluginAppLifeCycleDelegate alloc] init];
    }
    return self;
}

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch.
    
    self.flutterEngine = [[FlutterEngine alloc] initWithName:@"MyFlutterEngine"];
    // 使用默认的Flutter路由运行默认的Dart入口点。
    // 当在AppDelegate中创建的FlutterEngine上调用run时，默认Dart库的默认main（）入口点函数将运行。
    [self.flutterEngine run];
    [GeneratedPluginRegistrant registerWithRegistry:self.flutterEngine];
    
    return [_lifeCycleDelegate application:application didFinishLaunchingWithOptions:launchOptions];
}

// Returns the key window's rootViewController, if it's a FlutterViewController.
// Otherwise, returns nil.
- (FlutterViewController*)rootFlutterViewController {
    UIViewController* viewController = [UIApplication sharedApplication].keyWindow.rootViewController;
    if ([viewController isKindOfClass:[FlutterViewController class]]) {
        return (FlutterViewController*)viewController;
    }
    return nil;
}

- (void)touchesBegan:(NSSet*)touches withEvent:(UIEvent*)event {
    [super touchesBegan:touches withEvent:event];
    
    // Pass status bar taps to key window Flutter rootViewController.
    if (self.rootFlutterViewController != nil) {
        [self.rootFlutterViewController handleStatusBarTouches:event];
    }
}
//....
// 这里是生命周期代码，具体的可以参考Demo中AppDelegate2.m
@end

// flutter
@pragma('vm:entry-point')
void myOtherEntryPoint() { ... };

// oc
[self.flutterEngine runWithEntrypoint:@"myOtherEntryPoint"];