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【備忘録】previewProviderを使用し、プレビュー画面でレイアウトを確認する。

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previewProviderとは?

Xcode上でプレビュー画面を表示する際に使用する。
メソッド内に記述した内容はプレビュー画面にしか表示されない。

例)

struct CircleCheck_Previews: PreviewProvider {
    static var previews: some View {
        VStack {
            Image(systemName: "hoge")
        }
    }
}

レイアウト(配置)

struct CircleCheck_Previews: PreviewProvider {
    static var previews: some View {
        VStack {
            CircleImage()
        }
    }
}

縦並びにする(VStack)

  VStack {
        CircleImage()
         }

横を並びにする(HStack)

  HStack {
        CircleImage()
         }

前後を並びにする(ZStack)

  ZStack {
        CircleImage()
         }

画面を分ける(Group)

  Group {
        CircleImage()
         }

参考:https://developer.apple.com/documentation/swiftui/previewprovider

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