如何在 onTapGesture 中获取本地点击位置? [英] How to get local tap position in onTapGesture?

问题描述

有一些渲染图像，需要确定相对于图像的点击位置.看似简单，却找不到答案

Have some rendered image and need to determine tap position relative to image. Seems to be simple, but can't find the answer

  var body: some View {
    VStack {
      Image(uiImage: drawRectangle()) // some rendered image
        .onTapGesture {
          // print(x, y)?
        }

推荐答案

找到这个解决方案:

        .gesture(
            DragGesture(minimumDistance: 0, coordinateSpace: .global)
                .onChanged { value in
                  self.position = value.location
                }
                .onEnded { _ in
                  self.position = .zero
                }
        )

设置 minimumDistance: 0 会立即调用 onChanged

setting minimumDistance: 0 will call onChanged immediately

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