本文是在FLutter環(huán)境已經(jīng)搭建好的前提下乘凸，記錄如何向iOS原生項(xiàng)目中集成Flutter厕诡。

• 創(chuàng)建FLutter module
  打開終端 ，進(jìn)入原生項(xiàng)目的上一級(jí)目錄营勤，如項(xiàng)目目錄是：xxx/HybridTest/HybridProject/

$ cd xxx/HybridTest/
$ flutter create -t module my_flutter

以上命令運(yùn)行后會(huì)在xxx/HybridTest/下生成一個(gè)名為my_flutter文件夾灵嫌。文件夾內(nèi)的內(nèi)容如下圖（如果你沒有打開顯示隱藏文件，打開終端輸入命令：defaults write com.apple.finder AppleShowAllFiles -boolean true;killall Finder葛作；再次隱藏文件寿羞，輸入命令：defaults write com.apple.finder AppleShowAllFiles -boolean false;killall Finder）：

my_flutter.jpg

其中.iOS和.andriod分別是iOS和安卓的宿主工程，lib里面是dart部分的代碼赂蠢。my_flutter這個(gè)項(xiàng)目可以用AndroidStudio獨(dú)立打開運(yùn)行绪穆。

接下來向podfile中添加如下內(nèi)容：

flutter_application_path = '../my_flutter/'
eval(File.read(File.join(flutter_application_path, '.ios', 'Flutter', 'podhelper.rb')), binding)

添加后的效果如下：

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

  # Pods for FLutterHybridDemo
  flutter_application_path = '../my_flutter/'
  eval(File.read(File.join(flutter_application_path, '.ios', 'Flutter', 'podhelper.rb')), binding)

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

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

end

PS:最近朋友使用V1.9版本的flutter環(huán)境，按照上述設(shè)置podfile虱岂，執(zhí)行pod install后出現(xiàn)如下情況：

dependencies.jpeg

出現(xiàn)這種情況按照下圖設(shè)置podfile即可解決：

podfile.jpeg

參見文檔Add Flutter to existing apps

然后運(yùn)行pod install玖院，運(yùn)行完成，pod中就集成了FLutter和FlutterPluginRegistrant第岖。當(dāng)我們?cè)趂lutter_module/pubspec.yaml中添加FLutter插件后难菌，除了需要運(yùn)行flutter packages get，還需要在iOS目錄下運(yùn)行pod install蔑滓，才能確保插件和flutter.framework添加到iOS項(xiàng)目中郊酒。

• 禁用Bitcode
  目前flutter還不支持Bitcode，在Build Settings->Build Options->Enable Bitcode中將Bitcode設(shè)置為NO键袱。

• 在Build phase中添加Run Script燎窘，添加如下配置，

"$FLUTTER_ROOT/packages/flutter_tools/bin/xcode_backend.sh" build
"$FLUTTER_ROOT/packages/flutter_tools/bin/xcode_backend.sh" embed

并將Run Script移動(dòng)至Target Dependencies phase下面蹄咖，如下圖：

RunScript.png

至此荠耽，就集成完畢了，編譯不報(bào)錯(cuò)就可比藻。

iOS項(xiàng)目中調(diào)用Futter module

iOS中有兩種方式調(diào)用flutter模塊：

• 直接使用FlutterViewController
• 使用FlutterEngine

使用FlutterViewController的方式

可通過調(diào)用setInitialRoute方法設(shè)置路由和傳參铝量。

- (void)viewDidLoad {
    [super viewDidLoad];
    UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
    [button addTarget:self
               action:@selector(handleButtonAction)
     forControlEvents:UIControlEventTouchUpInside];
    [button setTitle:@"Press me" forState:UIControlStateNormal];
    [button setBackgroundColor:[UIColor blueColor]];
    button.frame = CGRectMake(80.0, 210.0, 160.0, 40.0);
    [self.view addSubview:button];
}
    
- (void)handleButtonAction {
    //方式二
    FlutterViewController *flutterViewController = [FlutterViewController new];
    [flutterViewController setInitialRoute:@"{name:test,dataList:['11','22']}"];
    [self presentViewController:flutterViewController animated:YES completion:nil];
}

使用FlutterEngine的方式

AppDelegate.h中導(dǎo)入#import <Flutter/Flutter.h>，讓AppDelegate集成FlutterAppDelegate银亲，添加屬性flutterEngine慢叨。

#import <UIKit/UIKit.h>
#import <Flutter/Flutter.h>

@interface AppDelegate : FlutterAppDelegate <UIApplicationDelegate>

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

@end

AppDelegate.m文件中導(dǎo)入#import <FlutterPluginRegistrant/GeneratedPluginRegistrant.h>，做如下設(shè)置：

#import "AppDelegate.h"
#import <FlutterPluginRegistrant/GeneratedPluginRegistrant.h>

@interface AppDelegate ()

@end

@implementation AppDelegate


- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch.
    self.flutterEngine = [[FlutterEngine alloc]initWithName:@"io.flutter" project:nil];
    [self.flutterEngine runWithEntrypoint:nil];
    [GeneratedPluginRegistrant registerWithRegistry:self.flutterEngine];
    return [super application:application didFinishLaunchingWithOptions:launchOptions];
}

原生跳轉(zhuǎn)flutter方式如下：

- (void)handleButtonAction {
    // 方式一
    FlutterEngine  *flutterEngine = [(AppDelegate *)[[UIApplication sharedApplication] delegate] flutterEngine];
    FlutterViewController *flutterViewController = [[FlutterViewController alloc] initWithEngine:flutterEngine nibName:nil bundle:nil];
    [flutterViewController setInitialRoute:@"{name:devio,dataList:['aa','bb']}"];
    [self presentViewController:flutterViewController animated:YES completion:nil];
}