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【SwiftUI】ViewController でSwiftUIを使う方法

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ViewController内でSwiftUIで構成したViewを使う

ViewController内でSwiftUIのViewを使用したい場合は、以下のように、SwiftUIのViewをUIHostingControllerでラップして使用できるようになります。

import SwiftUI

class ViewController: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()

        // UIHostingViewControllerでSwiftUIのViewをラップする
        let vc: UIHostingController = UIHostingController(rootView: SampleView())
        // UIHostingViewControllerを子要素に追加
        self.addChild(vc)
        // UIHostingViewControllerのViewを追加
        self.view.addSubview(vc.view)
        // ViewControllerに処理が終了したことを伝える
        vc.didMove(toParent: self)
    }
}

struct SampleView : View {
    var body: some View {
        Text("SampleView")
    }
}

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