[英]NSMutableString + webService
我正在嘗試使用Web服務,但是當元素名稱更改時,請更改所有其他內容...
-(void)callWebService {
_estacionamentoAdd = [[Estacionamento alloc]init];
NSString *url = @"http://urlfromws";
NSMutableURLRequest *request =[[[NSMutableURLRequest alloc] init] autorelease];
[request setURL:[NSURL URLWithString:url]];
[request setHTTPMethod:@"GET"];
NSURLConnection *conn=[[NSURLConnection alloc] initWithRequest:request delegate:self];
if (conn) {
webData = [[NSMutableData data] retain];
}
else
{
}
}
//何時獲得響應的值
-(void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string {
if(!soapResults)
{
soapResults = [[NSMutableString alloc] init];
}
NSLog(@"stringFound:%@", string);
[soapResults setString:string];
}
//收到回復時
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName
{
if(!soapResults)
{
soapResults = [[NSMutableString alloc] init];
}
if( [elementName isEqualToString:@"id"])
{
id = [soapResults intValue];
}
else if( [elementName isEqualToString:@"name"])
{
name = soapResults;
}
else if( [elementName isEqualToString:@"adress"])
{
adress = soapResults;
}
[soapResults setString:@""];
}
當元素名稱為“名稱或地址”時,id和名稱等於地址
當elementName為id ...時,id = soapResults。 好的,但是當elementName為Adress時,adress = soapResults並且id也會更改。 為什么?
好吧,我只看到名稱和地址始終是@“”並且相同。
例如
...
name = soapResults; //NOT copied.. name and soapResults are the same object
...
[soapResults setString:@""]; //affects name too, as they are the same
地址相同,但ID不相同,因為這是整數,而不是對象
名稱=地址= soapResults ...
您可能要復制值
name = [soapResults description];
...
address = [soapResults description];
其他問題:
不要在foundCharacters中使用[soapResults setString:newString],而是使用appendString(n次調用foundCharacters)
我解決了我的問題:
//始終釋放NSMutableString
-(void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string {
if(soapResults) {
[soapResults release];
soapResults = nil;
}
soapResults = [[NSMutableString alloc] init];
NSLog(@"stringFound:%@", string);
[soapResults appendString:string];
}
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