SwiftUI: How to pass a View as a parameter into another View to get Bottom Sheet? - ios

Question

I'm trying to create a View for the bottom sheet. It will have some view with a button when we tap on the button a bottom sheet has to appear.
I can modify the bottom sheet's colour, height, corner radius, how much the background view has to blur.
struct BottomSheetView: View {
#Binding var showBottomSheet: Bool
#Binding var bgColor: Color
#Binding var cornerRadius: CGFloat
#Binding var bottomSheetRatio: CGFloat
#Binding var blurPoint: CGFloat
var body: some View {
GeometryReader { geometry in
ZStack {
VStack {
Button(action: {
self.showBottomSheet.toggle()
}){
Text("click here")
.padding()
}
Spacer()
}
.frame(minWidth: 0, maxWidth: .infinity, minHeight: 0, maxHeight: .infinity)
.blur(radius: self.showBottomSheet ? self.blurPoint : 0)
.onTapGesture {
if self.showBottomSheet {
self.showBottomSheet = false
}
}
Rectangle()
.fill(self.bgColor)
.cornerRadius(self.cornerRadius)
.offset(y: self.showBottomSheet ? geometry.size.height * self.bottomSheetRatio : geometry.size.height + 200)
.animation(.spring())
}
}
}
}
In the above code
VStack {
Button(action: {
self.showBottomSheet.toggle()
}){
Text("click here")
.padding()
}
Spacer()
}
This VStack should replace with some other View, from that View I want to pass the Binding values.
Is there a way to achieve that? Thanks in advance.

Answer 1

I have achieved the requirement with ViewModifier
First I have created a ViewModifier struct. which will have all the required values in init()
struct BottomSheetModifier: ViewModifier {
var showBottomSheet: Bool
var blurPoint: CGFloat
var bgColor: Color
var cornerRadius: CGFloat
var bottomSheetRatio: CGFloat
init(showBottomSheet: Bool, blurPoint: CGFloat, bgColor: Color, cornerRadius: CGFloat, bottomSheetRatio: CGFloat) {
self.showBottomSheet = showBottomSheet
self.blurPoint = blurPoint
self.bgColor = bgColor
self.cornerRadius = cornerRadius
self.bottomSheetRatio = bottomSheetRatio
}
func body(content: Content) -> some View {
GeometryReader { geometry in
ZStack {
content
.blur(radius: self.showBottomSheet ? self.blurPoint : 0)
RoundedRectangle(cornerRadius: self.cornerRadius)
.fill(self.bgColor)
.offset(y: self.showBottomSheet ? geometry.size.height * self.bottomSheetRatio : geometry.size.height + 200)
.animation(.spring())
}
}
}
}
Second I've created an extension for View which will have a function with all the values as arguments and initialized the modifier in it.
extension View {
func bottomSheet(showBottomSheet: Bool, blurPoint: CGFloat, bgColor: Color, cornerRadius: CGFloat, bottomSheetRatio: CGFloat) -> some View {
modifier(BottomSheetModifier(showBottomSheet: showBottomSheet, blurPoint: blurPoint, bgColor: bgColor, cornerRadius: cornerRadius, bottomSheetRatio: bottomSheetRatio))
}
}
Third I've created a View. In that I have added some elements and simply call the modifier here with my required bottomsheet size, colour and other values.
struct DemoBottomSheetView: View {
#Binding var showBottomSheet: Bool
var body: some View {
VStack(spacing: 20) {
Text("welcome to bottom sheet")
Button(action: {
self.showBottomSheet.toggle()
}){
Text("Click Me")
.padding()
.background(Color.blue)
.foregroundColor(.white)
.cornerRadius(10)
}
Spacer()
}
.onTapGesture {
if self.showBottomSheet {
self.showBottomSheet = false
}
}
.bottomSheet(showBottomSheet: self.showBottomSheet, blurPoint: 4, bgColor: .red, cornerRadius: 25, bottomSheetRatio: 0.5)
}
}
Final output

Answer 2

struct BottomSheetView<Content: View>: View {
var content: Content
...
var body: some View {
content //do anything you want with content
}
}
and you need to pass your content in your View Ininit
like
BottomSheetView(content: Text("test"),
showBottomSheet: $test1,
bgColor: $test2,
cornerRadius: $test3,
bottomSheetRatio: $ctest4,
blurPoint: $test5)