iphone uiwebview 程序化缩放

问题描述

我正在开发一个应用程序，它将 html 文件本地保存在 iPhone 文件系统上，然后在 UIWebView 中加载它们.我希望能够在 UIWebView 上以编程方式缩放或双击，我尝试搜索 javascript 代码，但我只能滚动.

I'm developing an app that saves html files locally on iPhone file system, then load them in UIWebView. I want to be able to zoom or double tap programmatically on the UIWebView, I tried searching for javascript code, but I could only scroll.

我也尝试了 webview 转换，但对我来说没有成功.我找到了这个方法

I also tried the webview transform, but didn't work out for me. I found this method

sendAction:to:from:forEvent:

http://developer.apple.com/iphone/library/documentation/UIKit/Reference/UIApplication_Class/Reference/Reference.html#jumpTo_26

在 UIApplication 类中，可以向控件发送操作.

in the UIApplication class, that can send actions to controls.

有人知道如何以编程方式将双击动作发送到某个 x,y 上的 UIWebView 吗?

Does anybody know how to send the double tap action programmatically to a UIWebView on a certain x,y?

推荐答案

获取UIWebview的子视图，即UIScrollview

get the UIWebview's subview which is a UIScrollview

UIScrollView *sview = [[webview subviews] objectAtIndex:0];

然后使用缩放方法.

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