NSURLConnection的用法
NSURLRequest *request = ];NSURLConnection *topAppsConnection = [[ initWithRequest:request delegate:self] autorelease];
if (topAppsConnection)
self.topAppsData = ;
下面是NSURLConnection的几个代理方法：
#pragma mark NSURLConnectionDelegate
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {
NSInteger status = [(NSHTTPURLResponse *)response statusCode];
if (status != 200)
;
}
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
;
}
- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {
;
}
- (void)connectionDidFinishLoading:(NSURLConnection *)connection {
NSString *topAppsString = [[ initWithData:topAppsData encoding:NSUTF8StringEncoding] autorelease];
self.topAppsData = nil;
@try {
RootViewController *rootViewController = (RootViewController *);
rootViewController.topApps = [[ objectForKey:@"feed"]objectForKey:@"entry"];
;
}
@catch (NSException *e) {
}
}
接下来，就是这几个代理方法中用到的cancel:函数的实现：
- (void)cancel:(NSURLConnection *)connection {
;
self.topAppsData = nil;
}
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