javascript - 如何获取UIWebView中选中文本的坐标？

Question

我有一个简单的 UIWebView 加载了 html 文件。我想显示 PopOverController 指向所选文本，如 -

.

我想要从 UIWebView 中选择的文本的坐标。如果我将 UIWebView 的 scalesPageToFit 属性设置为 NO，则 this链接工作正常。如果我将 UIWebView 的 scalesPageToFit 属性设置为 YES，则会失败。

任何人请帮助我解决我的问题。

Answer 1

首先像这样移除原生的长按手势识别器:

for(UIGestureRecognizer *gesRecog in yourWebView.gestureRecognizers)
    {
        if([gesRecog isKindOfClass:[UILongPressGestureRecognizer class]])
        {
            [startTF removeGestureRecognizer:gesRecog];
        }
    }

然后指定一个自定义的:

    UILongPressGestureRecognizer *myOwnLongPressRecog = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(handleWebViewLongpress:)];

        // set numberOfTapsRequired and numberOfTouchesRequired as per your requirement:       

[yourWebView addGestureRecognizer:myOwnLongPressRecog];

//像这样处理长按:

 - (void) handleWebViewLongpress: (UIGestureRecognizer *) recog
    {
     int zoomedWidth = [[yourWebView stringByEvaluatingJavaScriptFromString:@"window.innerWidth"] intValue];

        CGFloat scale = yourWebView.frame.size.width / zoomedWidth;  // get the scaled value of your web view

        CGPoint zoomedCords = [gesture locationInView:self.webView];

        zoomedCords.x /= scale; // Normal math. Divide by the scale to get the real thing.
        zoomedCords.y /= scale;

NSLog(@"%@", zoomedCords);

            }