iOS WKWebView 禁止选中文字

0x00 方法一

通过 JavaScript 注入来实现：

NSString *js = @"document.body.style.userSelect = 'none'; document.body.style.webkitUserSelect = 'none';";
WKUserContentController *ctrl = [[WKUserContentController alloc] init];
WKUserScript *script = [[WKUserScript alloc] initWithSource:js injectionTime:WKUserScriptInjectionTimeAtDocumentEnd forMainFrameOnly:YES];
[ctrl addUserScript:script];
        
WKWebViewConfiguration *config = [[WKWebViewConfiguration alloc] init];
config.userContentController = ctrl;
        
WKWebView *webView = [[WKWebView alloc] initWithFrame:self.view.bounds configuration:config];
webView.scrollView.minimumZoomScale = 1.0;
webView.scrollView.maximumZoomScale = 1.0;

0x01 方法二

在加载完成后，注入 JS 代码

    func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
        // 注入JavaScript代码来禁用文字选择
        let script = """
            document.body.style.webkitUserSelect = 'none';
            document.body.style.userSelect = 'none';
        """
        webView.evaluateJavaScript(script, completionHandler: nil)
    }

0x03

重写 WKWebView 的 canPerformAction 方法来禁用文字选择和上下文菜单

class NoSelectWebView: WKWebView {
    override func canPerformAction(_ action: Selector, withSender sender: Any?) -> Bool {
        // 禁用文字选择和上下文菜单
        if action == #selector(UIResponderStandardEditActions.copy(_:)) ||
           action == #selector(UIResponderStandardEditActions.select(_:)) ||
           action == #selector(UIResponderStandardEditActions.selectAll(_:)) {
            return false
        }
        return super.canPerformAction(action, withSender: sender)
    }
}