Javascript in UIWebView callback to C/Objective-C

javascript objective-c ios cocoa-touch uiwebview
LK. picture LK. · May 20, 2010 · Viewed 26.8k times · Source

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?

Answer

bpapa picture bpapa · May 20, 2010

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.

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

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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