计数ios中的xml多个子标签
计数ios中的xml多个子标签
提问于 2013-11-20 14:26:55
我的XML是这样的：
<a>
<b>b1</b>
<c>c1</c>
<d>
<x>apple1</x>
<y>orange1</y>
<z>Mango1</z>
</d>
<d>
<x>apple2</x>
<y>orange2</y>
<z>Mango2</z>
</d>
<d>
<x>apple3</x>
<y>orange3</y>
<z>Mango3</z>
</d>
</a>
<a>
<b>b2</b>
<c>c2</c>
<d>
<x>apple4</x>
<y>orange4</y>
<z>Mango4</z>
</d>
<d>
<x>apple5</x>
<y>orange5</y>
<z>Mango5</z>
</d>
</a>这里我想计算一下objectiveC中每个<a>...</a>中的<d>...</d>标签的数量。第一个<a>标签的答案是3，第二个<a>标签的答案是2。请给我一个建议。谢谢。
下面是我的代码：
- (void) parser:(NSXMLParser *)parser didStartElement:(NSString *)elementname namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict
{
if ([elementname isEqualToString:@"a"])
{
currentBook = [[BookListInfo alloc] init];
currentNodeContentBook=[[NSMutableString alloc] init];
isInChapterDTO = false;
}
else if ([elementname isEqualToString:@"d"])
{
//currentBook = [[BookListInfo alloc] init];
currentNodeContentChapters=[[NSMutableString alloc] init];
isInChapterDTO = true;
currentChapter = [[Chapters alloc] init];
}
}
- (void) parser:(NSXMLParser *)parser didEndElement:(NSString *)elementname namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName
{
if(isInChapterDTO==TRUE)
{
if ([elementname isEqualToString:@"x"])
{
currentChapter.chapterId = currentNodeContentChapters;
}
if ([elementname isEqualToString:@"y"])
{
NSString*appendString=@"B";
currentNodeContentChapters=[appendString stringByAppendingString:currentNodeContentChapters];
currentChapter.chapterName = currentNodeContentChapters;
}
if ([elementname isEqualToString:@"z"])
{
currentChapter.chapterDurationAsSec = currentNodeContentChapters;
}
}
else
{
if ([elementname isEqualToString:@"b"])
{
[currentNodeContentBook stringByAppendingString:currentNodeContentBook];
currentBook.bookId = currentNodeContentBook;
}
if ([elementname isEqualToString:@"c"])
{
......................
}
}
}
if ([elementname isEqualToString:@"a"])
{
[bookListArray addObject:currentBook];
currentBook = nil;
currentNodeContentBook = nil;
}
else if ([elementname isEqualToString:@"d"])
{
[chapterListArray addObject:currentChapter];
//currentBook.ChapterList.Add(currentChapter);
currentChapter = nil;
isInChapterDTO = false;
}回答 2
Stack Overflow用户
发布于 2013-11-20 14:48:06
试试这个：
int dCount;
BOOL isATag;
- (void) parser:(NSXMLParser *)parser didStartElement:(NSString *)elementname namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict
{
if ([elementname isEqualToString:@"a"])
{
isATag = YES;
}
else if ([elementname isEqualToString:@"d"])
{
if(isATag){
dCount++;
}
}
}
- (void) parser:(NSXMLParser *)parser didEndElement:(NSString *)elementname namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName
{
if ([elementname isEqualToString:@"a"]){
NSLog(@"d tag count between A: %d",dCount);
dCount=0;
isATag = NO;
}
}Stack Overflow用户
发布于 2013-11-20 15:12:41
声明以下对象
int count;
BOOL insideATag;
NSMutableArray *dCounts;在viewDidLoad中初始化dCounts
dCounts = [[NSMutableArray alloc]init];添加以下委托方法
- (void) parser:(NSXMLParser *)parser didStartElement:(NSString *)elementname namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict
{
if ([elementname isEqualToString:@"a"])
{
insideATag = YES;
count = 0;
}
}
- (void) parser:(NSXMLParser *)parser didEndElement:(NSString *)elementname namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName
{
if ([element isEqualToString:@"a"]){
insideATag = NO;
[dCounts addObject:count]
} else if ([elementname isEqualToString:@"d"] && insideATag)
{
count++;
}
}如果您想要计数第一个'a‘标记中的'd’标记，那么
NSLog(@"Count of d : %i",[dCounts objectAtIndex:0]);页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/20088940
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