Hello,
I have a code that makes a http Request, gets an array with filenames from that, displays them each with an image and the filename below. Everything works fine.
Now I made each image a button that opens a detail page.
That works but at the top it should say the matching filename from the page before.
But I am not able to hand over the filename (name) from ContentView4 to the next page (ts).
Could you please help me?
Thanks
Nikias
Here is my code:
import SwiftUI
struct ContentView4: View {
@State var showingDetail = false
@State var username: String = "."
@State var password: String = "."
@State private var name = String("Nikias2")
@State private var t = String()
@State var dateien = ["word.png", "vi.png", "text.png", "pp.png", "pdf.png", "ordner.png", "ex.png", "datei.png", "bild.png"]
var body: some View {
ScrollView(.vertical) {
ZStack{
VStack {
ForEach(0 ..< dateien.count, id: \.self) {
Button(action: {
print("button pressed")
t = dateien[1]
self.showingDetail.toggle()
}) {
Image("datei")
}
.scaledToFit()
.padding(0)
Text(self.dateien[$0])
Text(t)
.foregroundColor(.white)
}
}
}
.sheet(isPresented:
$showingDetail) {
ts(name: t)
}
.onAppear { //This `onAppear` is added to `ZStack{...}`
doHttpRequest()
}
}
}
func doHttpRequest() {
let myUrl = URL(string: "http://192.168.1.180/int.php")! //Trailing semicolon is not needed
var request = URLRequest(url: myUrl)
request.httpMethod = "POST"// Compose a query string
let postString = "Name=\($username)&Passwort=\($password)"
request.httpBody = postString.data(using: .utf8)
let task = URLSession.shared.dataTask(with: request) {
(data, response, error) in
//Use if-let when you want to use the unwrapped value
if let error = error {
print("error=\(error)")
return
}
//Use guard-let when nil has no meaning and want to exit on nil
guard let response = response else {
print("Unexpected nil response")
return
}
// You can print out response object
print("response = \(response)")
//Let's convert response sent from a server side script to a NSDictionary object:
do {
//Use guard-let when nil has no meaning and want to exit on nil
guard let data = data else {
print("Unexpected nil data")
return
}
//#1 `mutableContainer` has no meaning in Swift
//#2 Use Swift Dictionary type instead of `NSDictionary`
let json = try JSONSerialization.jsonObject(with: data) as? [String: Any]
if let parseJSON = json {
// Now we can access value of First Name by its key
//Use if-let when you want to use the unwrapped value
if let firstNameValue = parseJSON["Name"] as? String {
print("firstNameValue: \(firstNameValue)")
let dateien = firstNameValue.components(separatedBy: ",")
print(dateien)
self.dateien = dateien
}
}
} catch {
print(error)
}
}
task.resume()
}
}
struct TestView_Previews: PreviewProvider {
static var previews: some View {
ContentView4()
}
}
struct ts: View {
var name: String
var body: some View {
NavigationView {
VStack {
Text(name)
.font(.system(size: 60))
.foregroundColor(.black)
.padding(50)
Text("+")
.font(.headline)
.foregroundColor(.white)
.padding()
.frame(width: 220, height: 60)
.background(Color.yellow)
.cornerRadius(35.0)
Text("Datei herunterladen")
.font(.headline)
.foregroundColor(.white)
.padding()
.frame(width: 220, height: 60)
.background(Color.blue)
.cornerRadius(35.0)
Text("Datei umbenennen")
.font(.headline)
.foregroundColor(.white)
.padding()
.frame(width: 220, height: 60)
.background(Color.green)
.cornerRadius(35.0)
Text("Datei löschen")
.font(.headline)
.foregroundColor(.white)
.padding()
.frame(width: 220, height: 60)
.background(Color.red)
.cornerRadius(35.0)
}
}
}
}
Nikias
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From
Kanada
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Hello guys,
I´m new to the forum and have a question concerning a http request which should be established without a button clicked. Basically I would like to have everything inside the button´s action tag done automatically without a button clicked.
Thanks in advance.
Nikias
Here is my code from the ts.view :
import SwiftUI
struct ContentView: View {
@State var username: String = "..."
@State var password: String = "..."
var body: some View {
ZStack {
VStack {
Button(action: {
if 1==1 {
let myUrl = URL(string: "
var request = URLRequest(url:myUrl!)
request.httpMethod = "POST"// Compose a query string
let postString = "Name=\($username)&Passwort=\($password)";
request.httpBody = postString.data(using: String.Encoding.utf8);
let task = URLSession.shared.dataTask(with: request) { (data: Data?, response: URLResponse?, error: Error?) in
if error != nil
{
print("error=\(error)")
return
}
// You can print out response object
print("response = \(response)")
//Let's convert response sent from a server side script to a NSDictionary object:
do {
let json = try JSONSerialization.jsonObject(with: data!, options: .mutableContainers) as? NSDictionary
if let parseJSON = json {
// Now we can access value of First Name by its key
let firstNameValue = parseJSON["Name"] as? String
print("firstNameValue: \(firstNameValue)")
let dateien = firstNameValue?.components(separatedBy: ",")
print(dateien)
}
} catch {
print(error)
}
}
task.resume()
}
}) {
LoginButtonContent()
}
}
}
}
}
struct TestView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}
I had to remove the URL.