[英]Align Rectangle to bottom in ScrollView / GeometryReader view not working
[英]Using GeometryReader without modifying the view
我在這里嘗試使用GeometryReader
根據可用大小構建視圖,但是由於此視圖嵌入在帶有填充的父視圖中,因此無法正確繪制。 我從其他 SO 答案中知道,有人說將GeometryReader
用作.overlay
或.background
但我無法在這里找到一種方法:
var body: some View {
GeometryReader { geometry in
HStack(alignment: .bottom, spacing: 5) {
ForEach(dataStore.sleepOrAwakeSpans) { sleepOrAwakeSpan in
VStack {
RoundedRectangle(cornerRadius: 5.0)
.frame(width: geometry.size.width * CGFloat((sleepOrAwakeSpan.endTime.timeIntervalSince(sleepOrAwakeSpan.startTime) / athlyticDataStore.sleepOrAwakeSpans.map { $0.endTime.timeIntervalSince($0.startTime) }.reduce(0, +))), height: 25)
.foregroundColor(sleepOrAwakeSpan.asleep == false ? TrackerConstants.scaleLevel6Color : TrackerConstants.scaleLevel2Color)
}
}
}
}
}
嘗試以下
var body: some View {
Color.clear.overlay( // << consumes available space of parent
GeometryReader { geometry in
HStack(alignment: .bottom, spacing: 5) {
ForEach(dataStore.sleepOrAwakeSpans) { sleepOrAwakeSpan in
VStack {
RoundedRectangle(cornerRadius: 5.0)
.frame(width: geometry.size.width * CGFloat((sleepOrAwakeSpan.endTime.timeIntervalSince(sleepOrAwakeSpan.startTime) / athlyticDataStore.sleepOrAwakeSpans.map { $0.endTime.timeIntervalSince($0.startTime) }.reduce(0, +))), height: 25)
.foregroundColor(sleepOrAwakeSpan.asleep == false ? TrackerConstants.scaleLevel6Color : TrackerConstants.scaleLevel2Color)
}
}
}
}) // end of overlay
}
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