我有以下代碼 - 讀取xml文件的方法。 但它對我來說工作非常緩慢。 沒有足夠的方法可以更快地讀取&讀取數據。iPhone中需要更快的xml讀取
if(connectionRemaining)
{
[self LoadingPopUp];
NSURL *tmpURl=[NSURL URLWithString:[NSString stringWithFormat:@"%@getcategory.php",[iGolfAppDelegate getServerPath]]];
NSMutableURLRequest *theRequest=[NSMutableURLRequest requestWithURL:tmpURl];
NSURLConnection *conn=[[NSURLConnection alloc] initWithRequest:theRequest delegate:self];
if(conn)
myWebData=[[NSMutableData data] retain];
connectionRemaining=NO;
}
-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {
[myWebData setLength: 0];
}
-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
[myWebData appendData:data];
}
-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {
[connection release];
}
-(void)connectionDidFinishLoading:(NSURLConnection *)connection {
// NSString *theXML = [[NSString alloc] initWithBytes: [myWebData mutableBytes] length:[myWebData length] encoding:NSUTF8StringEncoding];
// NSLog(@"%@",theXML);[theXML release];
if(myXMLParser)
[myXMLParser release];
myXMLParser = [[NSXMLParser alloc] initWithData: myWebData];
[myXMLParser setDelegate: self]; [myXMLParser setShouldResolveExternalEntities: YES];
[myXMLParser parse];[connection release];[myWebData release];
}
#pragma mark
#pragma mark XMLParsing Methods
-(void)parser:(NSXMLParser*)parser didStartElement:(NSString*)elementName namespaceURI:(NSString*)namespaceURI qualifiedName:(NSString*)qualifiedName attributes:(NSDictionary*)attributeDict {
if([elementName isEqualToString:@"category"])
categoryArray=[[NSMutableArray alloc]init];
else if([elementName isEqualToString:@"Prop_Category"])
aCategory=[[Category alloc] init];
}
-(void)parser:(NSXMLParser*)parser foundCharacters:(NSString*)string {
if(!currentElementValue)
currentElementValue=[[NSMutableString alloc] initWithString:string];
else
[currentElementValue appendString:string];
}
-(void)parser:(NSXMLParser*)parser didEndElement:(NSString*)elementName namespaceURI:(NSString*)namespaceURI qualifiedName:(NSString*)qualifiedName {
if([elementName isEqualToString:@"category"])
{ [LoadingAlert dismissWithClickedButtonIndex:0 animated:YES]; [LoadingAlert release];[self categoryPickerDiplay]; return; }
else if([elementName isEqualToString:@"Prop_Category"])
{ [categoryArray addObject:aCategory];[aCategory release];aCategory=nil; }
else{
[aCategory setValue:currentElementValue forKey:elementName];
[currentElementValue release];currentElementValue=nil;
}
}
讓我再次澄清我的問題。
我發現這種閱讀xml的方式是不夠的。 通過使用這種方式iPhone非常緩慢地加載數據。因爲,iphone會每次讀&比較每個標籤。
我想要一些更快的XML加載&解析。
預先感謝來自adc與我分享你的知識
@ennuikiller - 先生,這裏的代碼示例是可用的? – 2009-09-11 18:04:15
http://developer.apple.com/iphone/library/samplecode/SeismicXML/index.html – ennuikiller 2009-09-12 13:38:50