How can my iPhone Objective-C code get notified of Javascript errors in a UIWebView?

Question

I need to have my iPhone Objective-C code catch Javascript errors in a UIWebView. That includes uncaught exceptions, syntax errors when loading files, undefined variable re

Answer 1

I used the great solution proposed from Robert Sanders: How can my iPhone Objective-C code get notified of Javascript errors in a UIWebView?

That hook for webkit works fine also on iPhone. Instead of standard UIWebView I allocated derived MyUIWebView. I needed also to define hidden classes inside MyWebScriptObjectDelegate.h:

@class WebView;
@class WebFrame;
@class WebScriptCallFrame;

Within the ios sdk 4.1 the function:

- (void)webView:(id)webView windowScriptObjectAvailable:(id)newWindowScriptObject 

is deprecated and instead of it I used the function:

- (void)webView:(id)sender didClearWindowObject:(id)windowObject forFrame:(WebFrame*)frame

Also, I get some annoying warnings like "NSObject may not respond -windowScriptObject" because the class interface is hidden. I ignore them and it works nice.