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我需要在某个点停止libxml解析器的连接。任何人都可以告诉我如何做到这一点。如何在iphone sdk中的某个点停止libxml解析器中的连接？
这是我用来建立连接的方法。
- (BOOL)parseWithLibXML2Parser
{
BOOL success = NO;
ZohoAppDelegate *appDelegate = (ZohoAppDelegate*) [ [UIApplication sharedApplication] delegate];
NSString* curl;
if ([self.lateFeeName length] == 0)
{
curl = @"https://invoice.zoho.com/api/view/settings/latefees?ticket=";
curl = [curl stringByAppendingString:appDelegate.ticket];
curl = [curl stringByAppendingString:@"&apikey=bfc9c6dde7c889a19f8deea9d75345cd"];
curl = [curl stringByReplacingOccurrencesOfString:@"\n" withString:@""];
}
NSURLRequest *theRequest = [NSURLRequest requestWithURL:[NSURL URLWithString:curl]];
NSLog(@"the request parserWithLibXml2Parser %@",theRequest);
NSURLConnection *con = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self];
self.connection = con;
[con release];
// This creates a context for "push" parsing in which chunks of data that are
// not "well balanced" can be passed to the context for streaming parsing.
// The handler structure defined above will be used for all the parsing. The
// second argument, self, will be passed as user data to each of the SAX
// handlers. The last three arguments are left blank to avoid creating a tree
// in memory.
_xmlParserContext = xmlCreatePushParserCtxt(&simpleSAXHandlerStruct, self, NULL, 0, NULL);
if(self.connection != nil)
{
do
{
[[NSRunLoop currentRunLoop] runMode:NSDefaultRunLoopMode beforeDate:[NSDate distantFuture]];
} while (!_done && !self.error);
}
if(self.error)
{
[self.delegate parser:self encounteredError:nil];
} else
{
success = YES;
}
return success;
}
实际上，当我在加载数据时正在点击后退按钮时，我正在收到异常。
// Called when a chunk of data has been downloaded.
- (void)connection:(NSURLConnection *)connection
didReceiveData:(NSData *)data
{
// Process the downloaded chunk of data.
xmlParseChunk(_xmlParserContext, (const char *)[data bytes], [data length], 0);//....Getting Exception at this line.
}
任何人的帮助，我将不胜感激。
谢谢， Monish。