// NSURLConnection+SendAsync.h
#if __IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_5_0
#import <Foundation/Foundation.h>
@interface NSURLConnection (SendAsync)
@end
#endif
// NSURLConnection+SendAsync.m
#if __IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_5_0
typedef void (^URLConnectionCompletionHandler)(NSURLResponse *response, NSData *data, NSError *error);
@interface URLConnectionDelegate : NSObject <NSURLConnectionDataDelegate>
@property (nonatomic, strong) NSURLResponse *response;
@property (nonatomic, strong) NSMutableData *data;
@property (nonatomic, strong) NSOperationQueue *queue;
@property (nonatomic, copy) URLConnectionCompletionHandler handler;
@end
@implementation URLConnectionDelegate
@synthesize response;
@synthesize data;
@synthesize queue;
@synthesize handler;
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)theResponse {
self.response = theResponse;
[data setLength:0]; // reset data
}
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)theData {
[data appendData:theData]; // append incoming data
}
- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {
[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
self.data = nil;
if (handler) { [queue addOperationWithBlock:^{ handler(response, nil, error); }]; }
}
- (void)connectionDidFinishLoading:(NSURLConnection *)connection {
[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
// TODO: Are we passing the arguments to the block correctly? Should we copy them?
if (handler) { [queue addOperationWithBlock:^{ handler(response, data, nil); }]; }
}
@end
#import <objc/runtime.h>
#import "NSURLConnection+SendAsync.h"
// Dynamically add @property (nonatomic,readonly) UIViewController *presentingViewController.
void sendAsynchronousRequest4(id self, SEL _cmd, NSURLRequest *request, NSOperationQueue *queue,
URLConnectionCompletionHandler handler);
void sendAsynchronousRequest4(id self, SEL _cmd, NSURLRequest *request, NSOperationQueue *queue,
URLConnectionCompletionHandler handler) {
URLConnectionDelegate *connectionDelegate = [[URLConnectionDelegate alloc] init];
connectionDelegate.data = [NSMutableData data];
connectionDelegate.queue = queue;
connectionDelegate.handler = handler;
NSURLConnection *connection = [NSURLConnection connectionWithRequest:request
delegate:connectionDelegate];
NSAssert(connection, nil);
}
@implementation NSURLConnection (SendAsync)
+ (void)load {
SEL sendAsyncSelector = @selector(sendAsynchronousRequest:queue:completionHandler:);
if (![NSURLConnection instancesRespondToSelector:sendAsyncSelector]) {
class_addMethod(object_getClass([self class]),
sendAsyncSelector, (IMP)sendAsynchronousRequest4, "v@:@@@");
}
}
@end
#endif