我通过UIVewRepresentable在SwiftUI中添加了WKwebview。我很难获得一些按钮来使Web视图后退和前进。下面是我制作的两个类,但我什至没有打印出来(也许是个错误?)。
import SwiftUI
import WebKit
struct Webview : UIViewRepresentable {
let request: URLRequest
func makeUIView(context: Context) -> WKWebView {
return WKWebView()
}
func updateUIView(_ uiView: WKWebView, context: Context) {
uiView.load(request)
}
func goBack(){
// go back
print("go back")
}
func goForward (){
// go forward
print("go forward")
}
}
import SwiftUI
struct FullWebView : View {
let webview = Webview(request: URLRequest(url: URL(string: "https://www.apple.com")!))
var body: some View {
VStack{
HStack{
Button(action: {
//do something
self.webview.goBack()
}){
Text("back")
}
Spacer()
Button(action: {
//do something
self.webview.goForward()
}){
Text("forward")
}
}
webview
}
}
}
答案 0 :(得分:1)
dfd感谢您将我指向正确的路径,您的答案需要进行一些修改,因为将webview作为var添加到struct意味着我需要在使用它时为其设置值,因此我还必须添加自定义init方法。无论如何,这里是有效的代码。
Webview结构
import SwiftUI
import WebKit
struct Webview : UIViewRepresentable {
let request: URLRequest
var webview: WKWebView?
init(web: WKWebView?, req: URLRequest) {
self.webview = WKWebView()
self.request = req
}
func makeUIView(context: Context) -> WKWebView {
return webview!
}
func updateUIView(_ uiView: WKWebView, context: Context) {
uiView.load(request)
}
func goBack(){
webview?.goBack()
}
func goForward(){
webview?.goForward()
}
}
这是使用网络视图并将按钮添加到顶部的结构
import SwiftUI
struct FullWebView : View {
let webview = Webview(web: nil, req: URLRequest(url: URL(string: "https://www.apple.com")!))
var body: some View {
VStack{
HStack{
Button(action: {
//do something
self.webview.goBack()
}){
Text("back")
}
Spacer()
Button(action: {
//do something
self.webview.goForward()
}){
Text("forward")
}
}
webview
}
}
}