如何检测UIWebView上的触摸 [英] How to detect touch on UIWebView

问题描述

在UIWebview上，如何检测触摸？

On UIWebview, how can I detect a touch?

但是当用户点击某个网址或触摸控件时却不是。

But not when user clicks some URL or touching a control.

是否可以处理它？<​​/ p>

Is it possible to handle it?

推荐答案

使用UIGestureRecognizerDelegate方法：

Use UIGestureRecognizerDelegate method:

在声明文件中添加UIGestureRecognizerDelegate（即你的.h文件）

Add UIGestureRecognizerDelegate in declaration file (i.e. your .h file)

步骤1：设置gestureRecognizer的委托:(在.m文件viewDidLoad中）

Step 1: Just set the delegate of gestureRecognizer: (in .m file viewDidLoad)

UITapGestureRecognizer *webViewTapped = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(tapAction:)];
webViewTapped.numberOfTapsRequired = 1;
webViewTapped.delegate = self;
[offScreenWebView addGestureRecognizer:webViewTapped];
[webViewTapped release];

第2步：覆盖此功能:(在.m文件中）

Step 2: Override this function: (in .m file)

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
{
    return YES;
}

步骤3：现在实现tapAction功能：

Step 3: Now implement the tapAction function:

- (void)tapAction:(UITapGestureRecognizer *)sender
{    
    NSLog(@"touched");

    // Get the specific point that was touched
    CGPoint point = [sender locationInView:self.view];
}

这篇关于如何检测UIWebView上的触摸的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！