Xcode 11 beta 5 中的 Path.fill 不再有效

Question

swiftUI 在Xcode11 beta5 中的Path.fill 和.stroke 不起作用

下面的代码在 Xcode beta4 中运行良好，但在 Xcode beta5 中崩溃，我得到的所有错误信息:Thread 1: EXC_BAD_INSTRUCTION (code=EXC_I386_INVOP, subcode = 0x0)

代码:

import SwiftUI

struct ContentView: View {
    var body: some View {
        Path{path in
            path.addRect(CGRect(x: 20, y: 20, width: 300, height: 200))
        }.fill(Color.red)
    }
}

#if DEBUG
struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}
#endif

Answer 1

这是 Beta 5 中的一个已知问题。在他们的发行说明中披露:

Using the Path structure may cause your app to crash if you’re using the SDKs included in Xcode 11 beta 5. As a result, you may be unable to successfully follow the steps in the Drawing Paths and Shapes tutorial. (53523206)