在SWiftUI中,onTapGesture不可靠。这个例子展示了问题,有时候你点击一个单元格,背景会像应该的一样变成灰色,而有时相邻的单元格会改变,有时则什么都不会发生。有什么想法吗?
struct ContentView: View {
@State var cellFg: [[Color]] = [
[.clear, .clear, .clear, .clear, .clear, .clear, .clear, .clear, .clear],
[.clear, .clear, .clear, .clear, .clear, .clear, .clear, .clear, .clear],
[.clear, .clear, .clear, .clear, .clear, .clear, .clear, .clear, .clear],
[.clear, .clear, .clear, .clear, .clear, .clear, .clear, .clear, .clear],
[.clear, .clear, .clear, .clear, .clear, .clear, .clear, .clear, .clear],
[.clear, .clear, .clear, .clear, .clear, .clear, .clear, .clear, .clear],
[.clear, .clear, .clear, .clear, .clear, .clear, .clear, .clear, .clear],
[.clear, .clear, .clear, .clear, .clear, .clear, .clear, .clear, .clear],
[.clear, .clear, .clear, .clear, .clear, .clear, .clear, .clear, .clear]
]
var body: some View {
VStack {
Spacer()
ForEach(0..<9) { row in
HStack {
Spacer()
ForEach(0..<9) { column in
Rectangle()
.foregroundColor(cellFg[row][column])
.border(Color.gray, width: 1)
// When you tap, it sometimes works, sometimes selects
// an adjacent cell and sometimes does nothing
.onTapGesture {
print("Row \(row) - Column\(column)")
cellFg[row][column] = .gray
}
}
Spacer()
}
}
Spacer()
}
}
}