\u5728 iOS \u4e2d\u4f7f\u7528 WebView \u6642\uff0cJavaScript \u7684 alert \u529f\u80fd\u5e38\u5e38\u7121\u6cd5\u6b63\u5e38\u986f\u793a\u3002\u7576\u4f60\u5e0c\u671b\u5728 WebView \u4e2d\u5f48\u51fa\u8b66\u544a\u6846\u6642\uff0c\u9700\u8981\u5c07\u5176\u8f49\u5316\u70ba\u539f\u751f\u7684 iOS alert \u4f86\u986f\u793a\u3002\u9019\u7bc7\u6587\u7ae0\u5c07\u4ecb\u7d39\u5982\u4f55\u5728 Swift \u4e2d\u6b63\u78ba\u8a2d\u7f6e WKWebView \u4ee5\u4f7f JavaScript alert \u529f\u80fd\u6b63\u5e38\u904b\u4f5c\u3002<\/p>\n
\u9996\u5148\uff0c\u6211\u5011\u9700\u8981\u521d\u59cb\u5316\u4e00\u500b WKWebView\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u8a2d\u7f6e WebView \u7684\u6b65\u9a5f\uff1a<\/p>\n
“`swift
\nimport UIKit
\nimport WebKit<\/p>\n
class HomeViewController: UIViewController, WKUIDelegate {
\n let webView = WKWebView()<\/p>\n
override func viewDidLoad() {
\n super.viewDidLoad()
\n setupWebView()
\n loadWebPage()
\n }<\/p>\n
private func setupWebView() {
\n webView.frame = self.view.bounds
\n webView.uiDelegate = self
\n self.view.addSubview(webView)
\n }<\/p>\n
private func loadWebPage() {
\n if let url = URL(string: “https:\/\/www.google.com\/”) {
\n webView.load(URLRequest(url: url))
\n }
\n }
\n}
\n“`<\/p>\n
\u70ba\u4e86\u8655\u7406 JavaScript alert\uff0c\u6211\u5011\u9700\u8981\u9075\u5faa `WKUIDelegate` \u5354\u5b9a\u3002\u9019\u6a23\u53ef\u4ee5\u8b93\u6211\u5011\u6514\u622a WebView \u4e2d\u7684 alert \u4e8b\u4ef6\uff0c\u4e26\u8f49\u5316\u70ba iOS \u7684 AlertController\u3002<\/p>\n
“`swift
\nclass HomeViewController: UIViewController, WKUIDelegate {
\n \/\/ \u4e4b\u524d\u7684\u4ee3\u78bc…<\/p>\n
\/\/ \u9019\u88e1\u53ef\u4ee5\u6dfb\u52a0\u4f60\u7684 delegate \u65b9\u6cd5
\n}
\n“`<\/p>\n
\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u9700\u8981\u5be6\u73fe `WKUIDelegate` \u4e2d\u7684\u5e7e\u500b\u65b9\u6cd5\u4f86\u8655\u7406 JavaScript \u7684 alert\u3001confirm \u548c prompt\u3002<\/p>\n
“`swift
\n\/\/ \u76e3\u807d JavaScript Alert
\nfunc webView(_ webView: WKWebView, runJavaScriptAlertPanelWithMessage message: String, initiatedByFrame frame: WKFrameInfo, completionHandler: @escaping () -> Void) {
\n let alertController = UIAlertController(title: nil, message: message, preferredStyle: .alert)
\n alertController.addAction(UIAlertAction(title: “Ok”, style: .default, handler: { (action) in
\n completionHandler()
\n }))
\n self.present(alertController, animated: true, completion: nil)
\n}<\/p>\n
\/\/ \u76e3\u807d JavaScript Confirm
\nfunc webView(_ webView: WKWebView, runJavaScriptConfirmPanelWithMessage message: String, initiatedByFrame frame: WKFrameInfo, completionHandler: @escaping (Bool) -> Void) {
\n let alertController = UIAlertController(title: nil, message: message, preferredStyle: .alert)
\n alertController.addAction(UIAlertAction(title: “Ok”, style: .default, handler: { (action) in
\n completionHandler(true)
\n }))
\n alertController.addAction(UIAlertAction(title: “Cancel”, style: .cancel, handler: { (action) in
\n completionHandler(false)
\n }))
\n self.present(alertController, animated: true, completion: nil)
\n}<\/p>\n
\/\/ \u76e3\u807d JavaScript Prompt
\nfunc webView(_ webView: WKWebView, runJavaScriptTextInputPanelWithPrompt prompt: String, defaultText: String?, initiatedByFrame frame: WKFrameInfo, completionHandler: @escaping (String?) -> Void) {
\n let alertController = UIAlertController(title: nil, message: prompt, preferredStyle: .alert)
\n alertController.addTextField { (textField) in
\n textField.text = defaultText
\n }
\n alertController.addAction(UIAlertAction(title: “Ok”, style: .default, handler: { (action) in
\n completionHandler(alertController.textFields?.first?.text)
\n }))
\n alertController.addAction(UIAlertAction(title: “Cancel”, style: .cancel, handler: { (action) in
\n completionHandler(nil)
\n }))
\n self.present(alertController, animated: true, completion: nil)
\n}
\n“`<\/p>\n
<\/p>\n
\u5982\u679c\u5728\u57f7\u884c\u4e0a\u8ff0\u4ee3\u78bc\u6642\u9047\u5230\u554f\u984c\uff0c\u8acb\u6aa2\u67e5\u4ee5\u4e0b\u5e7e\u9ede\uff1a
\n1. \u78ba\u4fdd\u5df2\u6b63\u78ba\u8a2d\u7f6e WKWebView \u7684 delegate\u3002
\n2. \u78ba\u8a8d JavaScript \u662f\u5426\u5728\u4f60\u7684 WebView \u4e2d\u555f\u7528\u3002
\n3. \u6aa2\u67e5 JavaScript \u7684 alert \u8a9e\u6cd5\u662f\u5426\u6b63\u78ba\u3002<\/p>\n
\u9664\u4e86\u57fa\u672c\u7684 alert \u529f\u80fd\uff0c\u9084\u53ef\u4ee5\u6839\u64da\u9700\u8981\u64f4\u5c55\u5176\u4ed6\u529f\u80fd\uff0c\u4f8b\u5982\u81ea\u5b9a\u7fa9\u6a23\u5f0f\u7684 alert\uff0c\u6216\u7d50\u5408\u5176\u4ed6 iOS UI \u5143\u7d20\u4f86\u63d0\u5347\u7528\u6236\u9ad4\u9a57\u3002<\/p>\n
\u901a\u904e\u4ee5\u4e0a\u6b65\u9a5f\uff0c\u4f60\u61c9\u8a72\u80fd\u5920\u5728 Swift \u7684 WKWebView \u4e2d\u6210\u529f\u5f48\u51fa JavaScript alert\uff0c\u4e26\u8f49\u5316\u70ba\u539f\u751f\u7684 iOS alert \u9032\u884c\u986f\u793a\u3002\u9019\u4e0d\u50c5\u63d0\u5347\u4e86\u7528\u6236\u9ad4\u9a57\uff0c\u4e5f\u4f7f\u5f97\u61c9\u7528\u66f4\u52a0\u5c08\u696d\u3002<\/p>\n
**Q1: \u70ba\u4ec0\u9ebc WebView \u4e2d\u7684 alert \u4e0d\u80fd\u6b63\u5e38\u986f\u793a\uff1f**
\nA1: \u56e0\u70ba WKWebView \u4e0d\u76f4\u63a5\u652f\u6301 JavaScript \u7684 alert\uff0c\u56e0\u6b64\u9700\u8981\u5c07\u5176\u8f49\u5316\u70ba iOS \u7684\u539f\u751f alert\u3002<\/p>\n
**Q2: \u5982\u4f55\u5728 WKWebView \u4e2d\u555f\u7528 JavaScript\uff1f**
\nA2: \u5728\u521d\u59cb\u5316 WKWebView \u6642\uff0c\u78ba\u4fdd\u5c07\u914d\u7f6e\u8a2d\u7f6e\u70ba\u652f\u6301 JavaScript\u3002<\/p>\n
**Q3: \u6211\u53ef\u4ee5\u81ea\u5b9a\u7fa9 alert \u7684\u6a23\u5f0f\u55ce\uff1f**
\nA3: \u662f\u7684\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528 UIAlertController \u81ea\u5b9a\u7fa9 alert \u7684\u6a23\u5f0f\u548c\u6309\u9215\u3002<\/p>\n
—<\/p>\n","protected":false},"excerpt":{"rendered":"
Swift WebView Alert \u7121\u6cd5\u986f\u793a\uff1f…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"aside","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[5],"tags":[],"class_list":["post-767","post","type-post","status-publish","format-aside","hentry","category-swift","post_format-post-format-aside"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_shortlink":"https:\/\/wp.me\/pcFK27-cn","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/767","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/comments?post=767"}],"version-history":[{"count":7,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/767\/revisions"}],"predecessor-version":[{"id":7573,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/767\/revisions\/7573"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=767"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=767"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=767"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}