Flutter与iOS混合开发实战

import UIKit
import Flutter
 
class HybridViewController: UIViewController {
    private var flutterEngine: FlutterEngine!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // 初始化Flutter引擎
        flutterEngine = FlutterEngine(name: "myFlutterEngine")
        // 启动引擎
        startFlutterEngine()
    }
    
    private func startFlutterEngine() {
        flutterEngine.run();
        // 创建FlutterViewController并设置初始路由及引擎
        let flutterViewController = FlutterViewController(engine: flutterEngine, nibName: nil, bundle: nil)
        // 设置FlutterViewController的视图为子视图
        addChild(flutterViewController)
        view.addSubview(flutterViewController.view)
        flutterViewController.didMove(toParent: self)
        
        // 自适应Flutter视图尺寸
        flutterViewController.view.frame = view.bounds
        flutterViewController.view.autoresizingMask = [.flexibleWidth, .flexibleHeight]
    }
}

这段代码展示了如何在iOS原生应用中嵌入Flutter视图。首先，在viewDidLoad方法中，我们初始化了一个Flutter引擎，并在适当的时候启动它。然后，我们创建了一个FlutterViewController实例，并将其视图作为子视图添加到当前视图控制器的视图中。最后，我们设置了Flutter视图的自适应尺寸。这样，Flutter就可以在iOS原生应用中提供其富文本和交互体验。