Javascript中的UIWebView回调到C / Objective-C [英] Javascript in UIWebView callback to C/Objective-C

问题描述

当在UIWebView中检测到某个事件时，是否有一种方法来获取对objective-c的回调？可以JavaScript发送一个回调给Objective-C？

Is there a way to get a callback to objective-c when a certain event has been detected in a UIWebView? Can Javascript send a callback to Objective-C?

推荐答案

更新 - 不要使用UIWebView了。使用WKWebView或更好的（如果它适合你的需要，你正在为iOS 9构建），一个Safari视图控制器。

Update - don't use UIWebView anymore. Use WKWebView, or better yet (if it fits your needs and you're building for iOS 9), a Safari View Controller.

但是如果你必须使用UIWebView，您的UIWebView委托，提供 webView：shouldStartLoadWithRequest：navigationType：

But if you must use UIWebView, in your UIWebView delegate, provide an implementation for webView:shouldStartLoadWithRequest:navigationType:

在HTML或Javascript文件中，将URL发送到自定义方案（出于可读性目的，不需要自定义方案）。所有发送的URL都将传递给你的Objective-C方法实现，然后你可以做你想要的。

In your HTML or Javascript files, add functions that send URLs to a custom scheme (for readability purposes, the custom scheme isn't required). All the URLs sent will be passed to your Objective-C method implementation, and then you can do what you'd like.

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