问题描述
由于某种原因,我无法在XCode 12.0版中正确获取AspectFill的图像背景,但只能使用.systemMedium
小部件尺寸。不论大小,它似乎都可以很好地工作。
import SwiftUI
@available(iOS 13.0.0,*)
struct Banana: View {
var body: some View {
vstack(alignment: .leading){
Spacer()
Text("Aardvark Exactlywhat")
.font(.largeTitle)
.bold()
.padding(.bottom,20)
.padding(.leading,20)
.padding(.trailing,20)
.minimumScaleFactor(0.5)
.foregroundColor(.white)
.shadow(
color: Color.black,radius: 1.0,x: CGFloat(4),y: CGFloat(4))
}
.edgesIgnoringSafeArea(.all)
.background(
Image("bananas")
.resizable()
.scaledToFill()
).edgesIgnoringSafeArea(.all)
}
}
@available(iOS 13.0.0,*)
struct Banana_Previews: PreviewProvider {
static var previews: some View {
Banana()
}
}
还有一个非常简单的小部件:
struct fruitWidgetEntryView : View {
var entry: Provider.Entry
var body: some View {
Banana()
}
}
@main
struct fruitWidget: Widget {
let kind: String = "fruitWidget"
var body: some WidgetConfiguration {
StaticConfiguration(kind: kind,provider: Provider()) { entry in
fruitWidgetEntryView(entry: entry)
}
.configurationdisplayName("fruit Widget")
.description("Enhance your day with delicIoUs fruit.")
.supportedFamilies([.systemSmall,.systemMedium,.systemLarge])
}
}
struct fruitWidget_Previews: PreviewProvider {
static var previews: some View {
Group{
fruitWidgetEntryView(entry: SimpleEntry(date: Date()))
.previewContext(
WidgetPreviewContext(family: .systemSmall))
fruitWidgetEntryView(entry: SimpleEntry(date: Date()))
.previewContext(
WidgetPreviewContext(family: .systemMedium))
fruitWidgetEntryView(entry: SimpleEntry(date: Date()))
.previewContext(
WidgetPreviewContext(family: .systemLarge))
}
}
}
我尝试使用GeometryReader和frame()以及其他十几种变化来更改纵横比。无论我尝试什么,我都会在中小部件的左侧和右侧获得空白。它仅适用于大型和小型尺寸。查看图片:
解决方法
这是固定的变体-作为背景中的图像,您必须将VStack
扩展到全屏。
注意:edgesIgnoringSafeArea
允许在内容变宽时超出安全区域,但不能使内容变宽。
var body: some View {
VStack(alignment: .leading){
Spacer()
Text("Aardvark Exactlywhat")
.font(.largeTitle)
.bold()
.padding(.bottom,20)
.padding(.leading,20)
.padding(.trailing,20)
.minimumScaleFactor(0.5)
.foregroundColor(.white)
.shadow(
color: Color.black,radius: 1.0,x: CGFloat(4),y: CGFloat(4))
}
.frame(maxWidth: .infinity,maxHeight: .infinity) // << this one !!
.edgesIgnoringSafeArea(.all)
.background(
Image("plant")
.resizable()
.scaledToFill()
)
}