下午溢出,
在我的代码中,我正在尝试解析NSData格式的SOAP响应。有了这些数据,使用NSXMLParse,我正在尝试创建一个字典数组。问题是,无论何时我将新词典添加到数组中,它都会用当前添加的词典替换旧词典对象内容。例如,在解析结束时,我有7个字典在我的数组中具有相同的内容。这是显示我所做的事情的代码;
- (void)connectionDidFinishLoading:(NSURLConnection *)connection {
NSLog(@"Received the SOAP data.");
if (!itemArray) {
itemArray = [[NSMutableArray alloc] init];
}
else {
itemArray = nil;
itemArray = [[NSMutableArray alloc] init];
}
if (!itemDictionary) {
itemDictionary = [[NSMutableDictionary alloc] init];
}
else {
itemDictionary = nil;
itemDictionary = [[NSMutableDictionary alloc] init];
}
parser = [[NSXMLParser alloc] initWithData:webData];
[parser setDelegate:self];
[parser parse];
}
- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qualifiedName attributes:(NSDictionary *)attributeDict {
NSLog(@"Started Element %@", elementName);
element = [NSMutableString string];
}
- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string {
if(element == nil) {
element = [[NSMutableString alloc] init];
}
[element appendString:string];
}
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName {
NSLog(@"Found an element named: %@ with a value of: %@", elementName, element);
if (![elementName isEqualToString:@"item"]) {
[itemDictionary setValue:element forKey:elementName];
}
else if ([elementName isEqualToString:@"item"]) {
if (itemDictionary) {
[itemArray addObject:itemDictionary];
[itemDictionary removeAllObjects];
}
}
}
提前谢谢你。 此致
答案 0 :(得分:0)
而不是:
[itemArray addObject:itemDictionary];
[itemDictionary removeAllObjects];
尝试:
[itemArray addObject:itemDictionary];
itemDictionary = [[NSMutableDictionary alloc] init];
因此,您不必删除字典中的所有项目,而是为下一组内容创建新字典。
答案 1 :(得分:0)
我认为你期望每个itemDictionary是一个需要存储在itemArray中的单个对象。所以你必须在启动元素后创建dictionay实例。试试这个
- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qualifiedName attributes:(NSDictionary *)attributeDict {
NSLog(@"Started Element %@", elementName);
itemDictionary = [[NSMutableDictionary alloc] init];
element = [NSMutableString string];
}
答案 2 :(得分:0)
当你调用removeAllObjects时,它只使用你的数组正在添加的字典实例。当您修改字典时,它会修改您的数组包含的相同字典(因为两者实际上是相同的),因此,不是调用removeAllObjects,而是每当新元素开始时都创建新字典。
- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qualifiedName attributes:(NSDictionary *)attributeDict {
NSLog(@"Started Element %@", elementName);
itemDictionary = [[NSMutableDictionary alloc] init];
element = [NSMutableString string];
}