WebView UIWebViewDelegate 使用

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週四, 2017-11-30 09:03

author

►如何在 request 前判別連結的 url 來做前置處理

1. 宣告

SWIFT : extend UIWebViewDelegate()
Objective-C : @interface ViewController2 : UIViewController <UIWebViewDelegate>

2. 拉出 webview 參考 @IBOutlet var mWebView: UIWebView!
3. 給定 delegate

override func viewDidLoad() {
        mWebView.delegate = self;
}

4. 實作 UIWebViewDelegate

SWIFT:

//webView request delegate
public func webView(_ webView: UIWebView, shouldStartLoadWith request: URLRequest, navigationType: UIWebViewNavigationType) -> Bool {
    //let urlScheme = request.url!.scheme
    let urlScheme = request.url!.absoluteString;
    print("scheme:\(urlScheme)");
    if urlScheme.contains("http://www.test.com") {
        return false;//webview 不再處理 URL
    }       
    return true;
}

Objective-C

- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType {
}

if (navigationType == UIWebViewNavigationTypeLinkClicked ) {
//表示按下網頁中檔案的連結點
}