- 可以自己改样式， 主要是 ViewModifier
struct Toast: ViewModifier {
@Binding var show: Bool //是否显示
@Binding var title: String //显示文字
func body(content: Content) -> some View {
GeometryReader { geo in
ZStack(){
content.zIndex(0).disabled(show)
//防止多次点击 .disabled(show)
VStack {
HStack {
Text(title)
.padding(EdgeInsets(top: 10, leading: 20, bottom: 10, trailing: 20))
.multilineTextAlignment(.center)
.foregroundColor(Color.white)
}
.background(Color.black.opacity(0.4)).cornerRadius(5)
.frame(maxWidth: geo.size.width - 100)
}
.frame(width: geo.size.width, height: geo.size.height)
.background(Color.clear)
.zIndex(1)
.opacity((show) ? 1 : 0)
.animation(.easeIn(duration: 0.25)) //动画
}
.onChange(of: show) { e in
if(e){
//消失
after(3) {
show.toggle()
}
}
}
}
}
}
extension View {
func toast(show: Binding<Bool>, title: Binding<String>) -> some View {
self.modifier(Toast(show: show, title: title))
}
}
