Passing data to objective c with POST rather than GET

Question

I have been using the url intercept method to pass data from javascript to objective C by passing the data as url encoded parameters and using NSURLProtocol to intercept the request however I am now wanting to send larger amounts of data like say 10,000 character long strings but this does not seem practical to do in a GET request. Right?

Is there a way for objective c to intercept POST data sent from a UIWebView?
If so do I still use NSURLProtocol and how do I get the POST data?
If not is there some other way I can pass larger amounts of data from the UIWebView to objective c?

Answer 1

When using code like:

@implementation AppProtocolHandler

+ (void)registerSpecialProtocol {
    static BOOL inited = NO;

    if (!inited) {
        inited = YES;
        [NSURLProtocol registerClass:[AppProtocolHandler class]];
    }
}

- (void)handleRequest {
    NSURLRequest *request = [self request];

    // null when via app:// but works when via http://
    NSLog(@"[request HTTPBody]: %@", [request HTTPBody]);
}

+ (BOOL)canInitWithRequest:(NSURLRequest *)request {
    return YES;
}

+ (NSURLRequest *)canonicalRequestForRequest:(NSURLRequest *)request {
    return request;
}

@end

Requests to some protocols (e.g. app://) will result in [request HTTPBody] being null. But if you send through http:// then the [request HTTPBody] will have the request data in an NSData object as expected.

So your Javascript should look something like:

$.post("http://test/hello/world", {'data':"foo bar"});

And not something like:

$.post("app://test/hello/world", {'data':"foo bar"});