ios - Handling Window.close in JavaScript through UIWebView - Obj C - Stack Overflow

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I recently started working on a IOS project that runs mainly on a UIWebView. Now my UIWebViewis a delegate of UIWebViewDelegate and what I have encountered is that my app does not respond to window.close and other window events that JavaScript might call. Now I am able to pick up a new HTTP request shot off through a href in my shouldStartLoadWithRequest delegate method.

My hope is to know if there is a way to listen for window events such as window.close in my IOS app and to retrieve the targets. I want to stray away from injecting any sort of JavaScript into the page directly as much as possible!

Anyone care to explain if or if not this is possible and why?

I recently started working on a IOS project that runs mainly on a UIWebView. Now my UIWebViewis a delegate of UIWebViewDelegate and what I have encountered is that my app does not respond to window.close and other window events that JavaScript might call. Now I am able to pick up a new HTTP request shot off through a href in my shouldStartLoadWithRequest delegate method.

My hope is to know if there is a way to listen for window events such as window.close in my IOS app and to retrieve the targets. I want to stray away from injecting any sort of JavaScript into the page directly as much as possible!

Anyone care to explain if or if not this is possible and why?

• javascript
• ios
• objective-c
• uiwebview

Share Improve this question Follow asked Aug 5, 2015 at 21:11 David BigaDavid Biga 2,80188 gold badges4040 silver badges6363 bronze badges

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2 Answers 2

Sorted by: Reset to default 4

Using UIWebView there is no way of achieving this without injecting some JavaScript. Even the newer WKWebView would still need JavaScript injection to make this work.

You would inject JavaScript that would override the window.close function and trigger a location change with something like location.href = "uniquescheme://window.close"; which, as you say, could be handled in shouldStartLoadWithRequest.

Something like:

[self.webView stringByEvaluatingJavaScriptFromString:@"window.close = function () { location.href = 'uniquescheme://window.close'; }"]

For WKWebView there are methods which catch the calls for (implement WKUIDelegate)

window.open : createWebViewWithConfiguration: forNavigationAction: windowFeatures:

and for

window.close : webViewDidClose:(WKWebView *)webView NS_AVAILABLE(10_11, 9_0)

mind it, it's only available 9.0 and up.

but not in UIWebView(actually still investigating if it can be done without injection, will update the answer if I find any)

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