별도의 School 및 Student 개체를 만들 것입니다. 파서는 currentSchool 및 currentStudent에 대한 속성을가집니다. 당신이 <name> 태그를 쳤을 때 당신의 파서가 <Student> 태그 안타 때마다, 파서가 </Student> 태그를 명중 할 때마다,
self.currentStudent = [[MyStudentObject alloc] init];
를 호출 다음
self.currentStudent = nil;
전화, 당신은 당신이이 있는지 확인할 수 있습니다 currentStudent. 그렇게하면 그 이름이 그 학생의 이름이됩니다. 현재 학생이없는 경우 이름은 학교의 이름입니다.
if (self.currentStudent)
{
self.currentStudent.name = /*string between <name> tags*/
}
else
{
self.currentSchool.name = /*string between <name> tags*/
}
미안 내 코드 조각이 너무 짧은이며, 지금이 입력 할 시간이별로 없습니다. 더 자세한 내용이 필요하면 나중에 코드를 추가 할 수 있습니다.
UPDATE
좀 더 세부 사항으로 이동하기위한 가장 빠른 방법은 내가 무엇을 찾고에 대한 코드를 보여주고, 코드로 모든 것을 설명하는 주석을 넣어 단지입니다. 이 부분에 대해 질문이 있거나 더 자세히 설명해야 할 사항이 있으면 무엇을 정교하게해야하는지 알려주고 최선을 다할 것입니다.
StudentXML.h
#import <Foundation/Foundation.h>
@interface StudentXML : NSObject
@property (nonatomic, strong) NSString *ID; // MAKE SURE THIS EXACTLY MATCHES THE ELEMENT IN THE XML!!
@property (nonatomic, strong) NSString *Name; // MAKE SURE THIS EXACTLY MATCHES THE ELEMENT IN THE XML!!
@end
StudentXML.m
#import "StudentXML.h"
@implementation StudentXML
@end
SchoolXML.h
#import <Foundation/Foundation.h>
#import "StudentXML.h"
@interface SchoolXML : NSObject
@property (nonatomic, strong) NSString *ID; // MAKE SURE THIS EXACTLY MATCHES THE ELEMENT IN THE XML!!
@property (nonatomic, strong) NSString *Name; // MAKE SURE THIS EXACTLY MATCHES THE ELEMENT IN THE XML!!
@property (nonatomic, strong) NSMutableArray *studentsArray; // Array of StudentXML objects
@end
SchoolXML.m
#import "SchoolXML.h"
@implementation SchoolXML
// Need to overwrite init method so that array is created when new SchoolXML object is created
- (SchoolXML *) init;
{
if (self = [super init])
{
self.studentsArray = [[NSMutableArray alloc] init];
return self;
}
else
{
NSLog(@"Error - SchoolXML object could not be initialized in init on SchoolXML.m");
return nil;
}
}
@end
SchoolsParser.h
#import <Foundation/Foundation.h>
#import "SchoolXML.h"
#import "StudentXML.h"
@interface SchoolsParser : NSObject
{
NSMutableString *currentElementValue; // Will hold the string between tags until we decide where to put it
}
@property (nonatomic, strong) SchoolXML *currentSchool; // Will hold the school that is in the process of being filled
@property (nonatomic, strong) StudentXML *currentStudent; // Will hold the student that is in the process of being filled
@property (nonatomic, strong) NSMutableArray *allSchools; // This is the final list of all the data in the XML file
- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qualifiedName attributes:(NSDictionary *)attributeDict;
- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string;
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName;
@end
SchoolsParser.당신은 구문 분석을 시작하려는 m
#import "SchoolsParser.h"
@implementation SchoolsParser
- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qualifiedName attributes:(NSDictionary *)attributeDict
// This method will be hit each time the parser sees an opening tag
// elementName is the string between the <> (example "School")
{
if ([elementName isEqualToString:@"School"])
{
self.currentSchool = [[SchoolXML alloc] init];
}
else if ([elementName isEqualToString:@"Student"])
{
self.currentStudent = [[StudentXML alloc] init];
}
}
- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string
// This method will be hit each time the parser sees a string between tags
// string is the value between the open and close tag (example "Fairfax High School")
// We take string and hold onto it until we can decide where it should be put
{
currentElementValue = [[NSMutableString alloc] initWithString:string];
}
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName
// This method will be hit each time the parser sees an closing tag
// elementName is the string between the </> (example "School")
// This is the method where we decide where we want to put the currentElementValue string
{
if ([elementName isEqualToString:@"Student"])
{
// Put the current student into the studentsArray of the currentSchool
[self.currentSchool.studentsArray addObject:self.currentStudent];
// We've finished building this student and have put it into the school we wanted, so we clear out currentStudent so we can reuse it next time
self.currentStudent = nil;
}
else if ([elementName isEqualToString:@"School"])
{
// Put the current school into the allSchoolsArray to send back to our view controller
[self.allSchools addObject:self.currentSchool];
// We've finished building this school and have put it into the return array, so we clear out currentSchool so we can reuse it next time
self.currentSchool = nil;
}
else if ([elementName isEqualToString:@"Schools"])
{
// We reached the end of the XML document
return;
}
else
// This is either a Name or an ID, so we want to put it into the correct currentSomething we are building
{
if (self.currentStudent)
// There is a currentStudent, so the Name or ID we found is that of a student
{
// Since the properties of our currentStudent object exactly match the elementNames in our XML, the parser can automatically fills values in where they need to be without us doing any more
// For example, it will take "Will Turner" in the <Name> tags in the XML and put it into the .Name property of our student
[self.currentStudent setValue:currentElementValue forKey:elementName];
}
else
// There was no student, so the Name or ID we found is that of a school
{
// Since the properties of our currentStudent object exactly match the elementNames in our XML, the parser can automatically fills values in where they need to be without us doing any more
// For example, it will take "Fairfax High School" in the <Name> tags in the XML and put it into the .Name property of our school
[self.currentSchool setValue:currentElementValue forKey:elementName];
}
}
// We've now put the string in currentElementValue where we wanted it, so we clear out currentElementValue so we can reuse it next time
currentElementValue = nil;
}
-(void)parser:(NSXMLParser *)parser parseErrorOccurred:(NSError *)parseError
{
NSLog(@"Error in SchoolsParser.m");
NSLog(@"%@",parseError.description);
}
@end
UIViewController.m는 (있는지 확인 당신 #include SchoolXML, StudentXML 및 SchoolsParser) :
- (void) startSchoolParser
{
NSXMLParser *nsXmlParser = [[NSXMLParser alloc] initWithData:responseData]; // where "responseData" is the NSData object that holds your XML
SchoolsParser *parser = [[SchoolsParser alloc] init];
[nsXmlParser setDelegate:parser];
if ([nsXmlParser parse])
{
// Parsing was successful
NSArray *allSchools = parser.allSchools;
// You can now loop through allSchools and use the data how ever you want
// For example, this code just NSLog's all the data
for (SchoolXML *school in allSchools)
{
NSLog(@"School Name = %@",school.Name);
NSLog(@"School ID = %@",school.ID);
for (StudentXML *student in school.studentsArray)
{
NSLog(@"Student Name = %@",student.Name);
NSLog(@"Student ID = %@",student.ID);
}
}
}
else
{
NSLog(@"Parsing Failed");
}
}
XML에 마지막 닫는 태그의'/'도 누락되었습니다. – Rob