binding the GeometryReader in swiftui - swiftui

Question

how to binding the GeometryReader 's item in childview? i use below code but no work?
but it show
Cannot call value of non-function type 'GeometryProxy'
is there any value to binding it?
GeometryReader { geometry in
geometry(geometry: geometry}
}
struct geometry: View {
#Binding var geometry:GeometryProxy
var body: some View {
Circle()
.foregroundColor(.blue).opacity(0.5).blur(radius: 5)
.frame(width: geometry.size.width * 0.04, height: geometry.size.width
* 0.04)
}
}

Answer 1

To make this easier to understand the solution, here is a minimal reproducible example of the problem:
struct ContentView: View {
var body: some View {
GeometryReader { geometry in
geometry(geometry: geometry)
}
}
}
struct geometry: View {
#Binding var geometry: GeometryProxy
var body: some View {
Circle()
.foregroundColor(.blue)
.opacity(0.5)
.blur(radius: 5)
.frame(width: geometry.size.width * 0.04, height: geometry.size.width * 0.04)
}
}
There are 2 main issues:
You have two geometry identifiers with different meanings.
You cannot pass a Binding into the initializer.
#1
You have geometry which is a GeometryProxy and another geometry which is a View. The inner geometry (GeometryProxy) is preferred since it is in the most local scope. This means that you can't access the geometry view.
You can solve this by using a capital letter on the view, which you should do by convention anyway (to avoid problems like this):
struct Geometry: View {
/* ... */
}
#2
Now that you have solved the first problem, you will now get the error:
Cannot convert value of type 'GeometryProxy' to expected argument type 'Binding'
Solve this by changing the line:
#Binding var geometry: GeometryProxy
To:
let geometry: GeometryProxy