Question

I have HTML string which is created using an xml file by a third party library. The HTML string contains custom URLs for images and videos (Ex:image://). Is there is way by I can handle these resource load request and load them correctly in UIWebView?

Answer 1

We need to create a subclass of NSURLProtocol and re-implement the following methods that can handle the custom URL scheme

+(BOOL)canInitWithRequest:(NSURLRequest*)request
+(NSURLRequest*)canonicalRequestForRequest:(NSURLRequest*)request
+(BOOL)requestIsCacheEquivalent:(NSURLRequest*)a toRequest:(NSURLRequest*)b
-(void)startLoading
-(void)stopLoading

We also have to register this custom URL protocol class when the app launches in the following way

[NSURLProtocol registerClass:[CustomURLProtocol class]];