{"id":592,"date":"2023-02-25T19:58:59","date_gmt":"2023-02-25T11:58:59","guid":{"rendered":"https:\/\/www.appblog.cn\/?p=592"},"modified":"2023-04-29T20:29:29","modified_gmt":"2023-04-29T12:29:29","slug":"swift-ui-create-browser-using-uiwebview-and-uitoolbar","status":"publish","type":"post","link":"https:\/\/www.appblog.cn\/index.php\/2023\/02\/25\/swift-ui-create-browser-using-uiwebview-and-uitoolbar\/","title":{"rendered":"Swift UI &#8211; \u4f7f\u7528UIWebView\u548cUIToolbar\u5236\u4f5c\u4e00\u4e2a\u6d4f\u89c8\u5668"},"content":{"rendered":"<blockquote>\n<p>\u6ce8\uff1a\u4ee3\u7801\u5df2\u5347\u7ea7\u81f3Swift4<\/p>\n<\/blockquote>\n<p>\u4f7f\u7528\u7f51\u9875\u63a7\u4ef6\uff08UIWebView\uff09\u4e0e\u5de5\u5177\u680f\u63a7\u4ef6\uff08UIToolbar\uff09\uff0c\u81ea\u5236\u4e00\u4e2a\u5c0f\u578b\u7684\u6d4f\u89c8\u5668\uff0c\u5176\u529f\u80fd\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li>\u8f93\u5165\u7f51\u5740\uff0c\u70b9\u51fb\u201cGo\u201d\u6309\u94ae\u52a0\u8f7d\u7f51\u9875<\/li>\n<li>\u52a0\u8f7d\u8fc7\u7a0b\u4e2d\u6709\u8fdb\u5ea6\u6761\uff0c\u540c\u65f6\u53ef\u4ee5\u70b9\u51fb\u505c\u6b62\u6309\u94ae\u53d6\u6d88\u52a0\u8f7d<\/li>\n<li>\u6709\u9875\u9762\u5237\u65b0\u6309\u94ae<\/li>\n<li>\u6709\u524d\u8fdb\u540e\u9000\u6309\u94ae<\/li>\n<\/ul>\n<p><!-- more --><\/p>\n<pre><code class=\"language-swift\">import UIKit\n\nclass ViewController: UIViewController, UIWebViewDelegate, UITextFieldDelegate {\n\n    @IBOutlet var btngo:UIButton!\n    @IBOutlet var webview:UIWebView!\n    @IBOutlet var txturl:UITextField!\n    var loadIndicator:UIActivityIndicatorView!\n\n    \/\/ \u8fdb\u5ea6\u6761\u8ba1\u65f6\u5668\n    var ptimer:Timer!\n    \/\/ \u8fdb\u5ea6\u6761\u63a7\u4ef6\n    var progBar:UIProgressView!\n\n    override func viewDidLoad() {\n        super.viewDidLoad()\n\n        self.webview.delegate = self\n\n        let frame = CGRect(x: 100.0, y: 100.0, width: 32.0, height: 32.0)\n        loadIndicator = UIActivityIndicatorView(frame: frame)\n        loadIndicator.activityIndicatorViewStyle = .gray\n        self.view.addSubview(loadIndicator);\n\n        txturl.delegate = self\n\n        \/\/ \u6784\u5efa\u6d4f\u89c8\u5668\u5de5\u5177\u6761\n        setupBrowserToolbar()\n    }\n\n    func setupBrowserToolbar() {\n        \/\/ \u521b\u5efa\u4e00\u4e2a\u6d4f\u89c8\u5668\u5de5\u5177\u6761\uff0c\u5e76\u8bbe\u7f6e\u5b83\u7684\u5927\u5c0f\u548c\u4f4d\u7f6e\n        let browserToolbar = UIToolbar(frame:CGRect(x: 0, y: 20, width: 320, height: 44))\n\n        \/\/ \u5c06\u5de5\u5177\u6761\u6dfb\u52a0\u5230\u5f53\u524d\u5e94\u7528\u7684\u754c\u9762\u4e2d\n        self.view.addSubview(browserToolbar)\n\n        \/\/ \u521b\u5efa\u56fe\u7247\u5de5\u5177\u6761\uff0c\u4f46\u662f\u4e0d\u662f\u76f4\u63a5\u4f7f\u7528\u6587\u4ef6\u540d\uff0c\u800c\u662f\u7528 Data \u65b9\u5f0f\u521d\u59cb\u5316 UIImage\n        let path = Bundle.main.path(forResource: &quot;back&quot;, ofType:&quot;png&quot;)\n\n        let urlStr = URL(fileURLWithPath: path!);\n        let data = try? Data(contentsOf: urlStr);\n        let btnBack = UIBarButtonItem(image:UIImage(data: data!), style:.plain, target:self,\n                                    action:#selector(ViewController.backClicked(_:)));\n        \/\/ \u7b2c\u4e00\u4e2a\u5206\u9694\u6309\u94ae\n        let btnGap1 = UIBarButtonItem(barButtonSystemItem:.flexibleSpace,\n                                    target:nil, action:nil)\n\n        \/\/ \u521b\u5efa\u524d\u8fdb\u6309\u94ae UIBarButtonItem\n        let btnForward = UIBarButtonItem(image:UIImage(named:&quot;forward.png&quot;),\n                                        style:.plain, target:self,\n                                        action:#selector(ViewController.forwardClicked(_:)))\n\n        \/\/ \u7b2c\u4e8c\u4e2a\u5206\u9694\u6309\u94ae\uff0c\u521b\u5efa\u4e00\u4e2a\u53ef\u4f38\u7f29\u7684UIBarButtonItem\n        let btnGap2 = UIBarButtonItem(barButtonSystemItem:.flexibleSpace,\n                                        target:nil, action:nil)\n\n        \/\/ \u521b\u5efa\u91cd\u65b0\u52a0\u8f7d\u6309\u94ae UIBarButtonItem\n        let btnReload = UIBarButtonItem(image:UIImage(named:&quot;reload.png&quot;),\n                                        style:.plain, target:self,\n                                        action:#selector(ViewController.reloadClicked(_:)))\n\n        \/\/ \u7b2c\u4e09\u4e2a\u5206\u9694\u6309\u94ae\n        let btnGap3 =  UIBarButtonItem(barButtonSystemItem:.flexibleSpace,\n                                        target:nil, action:nil)\n\n        \/\/ \u521b\u5efa\u52a0\u8f7d\u505c\u6b62\u6309\u94ae\n        let btnStop = UIBarButtonItem(image:UIImage(named:&quot;stop&quot;),\n                                        style:.plain, target:self,\n                                        action:#selector(ViewController.stopClicked(_:)))\n\n        \/\/ \u7b2c\u56db\u4e2a\u5206\u9694\u6309\u94ae\n        let btnGap4 =  UIBarButtonItem(barButtonSystemItem:.flexibleSpace,\n                                        target:nil, action:nil)\n\n        \/\/ \u521b\u5efa\u8fdb\u5ea6\u5de5\u5177\u6761\n        progBar = UIProgressView(progressViewStyle:UIProgressViewStyle.bar)\n\n        \/\/ \u8bbe\u7f6eUIProgressView\u7684\u5927\u5c0f\n        progBar.frame = CGRect(x: 0 , y: 0 , width: 80, height: 20)\n\n        \/\/ \u8bbe\u7f6e\u8be5\u8fdb\u5ea6\u6761\u7684\u521d\u59cb\u8fdb\u5ea6\u4e3a0\n        progBar.progress = 0\n\n        \/\/ \u521b\u5efa\u4f7f\u7528 UIView \u7684\u81ea\u5b9a\u4e49\u7684 UIBarButtonItem\n        let btnProg = UIBarButtonItem(customView:progBar)\n\n        \/\/ \u4e3a\u5de5\u5177\u6761\u8bbe\u7f6e\u5de5\u5177\u6309\u94ae\n        browserToolbar.setItems([btnback,btngap1,btnforward,btngap2,btnreload,\n                                btngap3,btnstop,btngap4, btnProg], animated:true)\n\n        \/\/ \u521b\u5efa\u8ba1\u65f6\u5668\u5bf9\u8c61\n        ptimer = Timer.scheduledTimer(timeInterval: 0.2, target:self,\n                                    selector:#selector(ViewController.loadProgress),\n                                    userInfo:nil, repeats:true)\n        ptimer.invalidate()\n    }\n\n    func textFieldShouldReturn(_ textField:UITextField) -&gt; Bool {\n        txturl.resignFirstResponder()\n        print(&quot;Url Changed!&quot;)\n        let url = txturl.text;\n        loadUrl(url!)\n        return true\n    }\n\n    \/**\n     * \u5728 UIWebView \u52a0\u8f7d\u6307\u5b9a URL\n     *\/\n    func loadUrl(_ url:String) {\n        let urlobj = URL(string:url)\n        let request = URLRequest(url:urlobj!)\n        webview.loadRequest(request);\n    }\n\n    func stopClicked(_ sender:UIBarButtonItem) {\n        webview.stopLoading()\n    }\n\n    func reloadClicked(_ sender:UIBarButtonItem) {\n        webview.reload()\n    }\n\n    func backClicked(_ sender:UIBarButtonItem) {\n        webview.goBack()\n    }\n\n    func forwardClicked(_ sender:UIBarButtonItem) {\n        webview.goForward()\n    }\n\n    @IBAction func goClicked(_ sender:UIButton) {\n        \/\/\u6536\u8d77\u8f93\u5165\u9762\u677f\n        txturl.resignFirstResponder()\n        let url = txturl.text;\n        loadUrl(url!)\n    }\n\n    override func didReceiveMemoryWarning() {\n        super.didReceiveMemoryWarning()\n    }\n\n    func webViewDidStartLoad(_ webView:UIWebView) {\n        progBar.setProgress(0, animated:false);\n        ptimer.fire();\n        loadIndicator.startAnimating();\n    }\n\n    func webViewDidFinishLoad(_ webView:UIWebView) {\n        loadIndicator.stopAnimating();\n        progBar.setProgress(1, animated:true);\n        ptimer.invalidate();\n    }\n\n    func loadProgress() {\n        \/\/ \u5982\u679c\u8fdb\u5ea6\u6ee1\u4e86\uff0c\u505c\u6b62\u8ba1\u65f6\u5668\n        if(progBar.progress &gt;= 1.0) {\n            \/\/ \u505c\u7528\u8ba1\u65f6\u5668\n            ptimer.invalidate();\n        } else {\n            \/\/ \u6539\u53d8\u8fdb\u5ea6\u6761\u7684\u8fdb\u5ea6\u503c\n            progBar.setProgress(progBar.progress + 0.02, animated:true);\n        }\n    }\n\n    func webView(_ webView: UIWebView, didFailLoadWithError error: Error) {\n        \/\/999\u9519\u8bef\u8fc7\u6ee4(\u9632\u6b62\u9875\u9762\u6b63\u5728\u52a0\u8f7d\u65f6\u5019\uff0c\u70b9\u51fbstop\u6309\u94ae\uff0c\u63d0\u793aNSURLErrorDomain error=-999)\n        if error._code == NSURLErrorCancelled {\n            return\n        }\n\n        let alertController = UIAlertController(title: &quot;\u51fa\u9519!&quot;,\n                                                message: error.localizedDescription,\n                                                preferredStyle: .alert)\n        let okAction = UIAlertAction(title: &quot;\u786e\u5b9a&quot;, style: .cancel, handler: nil)\n        alertController.addAction(okAction)\n        self.present(alertController, animated: true, completion: nil)\n    }\n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u6ce8\uff1a\u4ee3\u7801\u5df2\u5347\u7ea7\u81f3Swift4 \u4f7f\u7528\u7f51\u9875\u63a7\u4ef6\uff08UIWebView\uff09\u4e0e\u5de5\u5177\u680f\u63a7\u4ef6\uff08UIToolbar\uff09\uff0c\u81ea\u5236\u4e00\u4e2a\u5c0f [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[171],"tags":[],"class_list":["post-592","post","type-post","status-publish","format-standard","hentry","category-swift"],"_links":{"self":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts\/592","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/comments?post=592"}],"version-history":[{"count":0,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts\/592\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/media?parent=592"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/categories?post=592"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/tags?post=592"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}