如何在iPhone中解析GDataXML?
这里是xml如何在iPhone中解析GDataXML?,iphone,objective-c,xml,parsing,gdata,Iphone,Objective C,Xml,Parsing,Gdata,这里是xml Root---> Subject---> SubjectID 1 /SubjectID SubjectName MatheMatics /SubjectName Sub_Subject----> Sub_SubjectID 1 /Sub_SubjectID
Root--->
Subject--->
SubjectID 1 /SubjectID
SubjectName MatheMatics /SubjectName
Sub_Subject---->
Sub_SubjectID 1 /Sub_SubjectID
Sub_SubjectName Calculus /Sub_SubjectName
/Sub_Subject
Sub_Subject
Sub_SubjectID 2 /Sub_SubjectID
Sub_SubjectName Geometry /Sub_SubjectName
/Sub_Subject
/Subject
Subject---->
SubjectID 2 /SubjectID
SubjectName Physics /SubjectName
/Subject
/Root
在应用程序中,当应用程序启动时,我想在tableviewcontroller中显示主题名称&当我们单击tableviewcell时,它会导致另一个显示sub_主题列表的表视图
如何做到这一点
为此
+ (NSString *)dataFilePath:(BOOL)forSave {
return [[NSBundle mainBundle] pathForResource:@"SubjectData" ofType:@"xml"];
}
+ (RootSubject *)loadParty {
NSString *filePath = [self dataFilePath:FALSE];
NSData *xmlData = [[NSMutableData alloc] initWithContentsOfFile:filePath];
NSError *error;
GDataXMLDocument *doc = [[GDataXMLDocument alloc] initWithData:xmlData
options:0 error:&error];
/* if (doc == nil) { return nil; }
NSLog(@"%@", doc.rootElement);
[doc release];
[xmlData release];
return nil;*/
RootSubject *rootSubject = [[[RootSubject alloc] init] autorelease];
NSArray *partyMembers = [doc nodesForXPath:@"//Root/Subject" error:nil];
//NSArray *patry = [doc nodesForXPath:@"//Root/Subject/SunjectID" error:nil];
for (GDataXMLElement *partyMember in partyMembers) {
// Let's fill these in!
NSString *subjectId, *subjectName, *sub_SubjectId, *sub_SubjectName;
// senderName
NSArray *subjectIds = [partyMember elementsForName:@"SubjectID"];
if (subjectIds.count > 0) {
GDataXMLElement *firstName = (GDataXMLElement *) [subjectIds objectAtIndex:0];
subjectId = firstName.stringValue;
} else continue;
// senderEmail
NSArray *subjectNames = [partyMember elementsForName:@"SubjectName"];
if (subjectNames.count > 0) {
GDataXMLElement *firstLevel = (GDataXMLElement *) [subjectNames objectAtIndex:0];
subjectName = firstLevel.stringValue;
} else continue;
/* //senderPhone
NSArray *sub_SubjectIds = [partyMember elementsForName:@"Sub_SubjectID"];
if (sub_SubjectIds.count > 0) {
GDataXMLElement *firstName = (GDataXMLElement *) [sub_SubjectIds objectAtIndex:0];
sub_SubjectId = firstName.stringValue;
} else continue;
//senderLocation
NSArray *sub_SubjectNames = [partyMember elementsForName:@"Sub_SubjectName"];
if (sub_SubjectNames.count > 0) {
GDataXMLElement *firstName = (GDataXMLElement *) [sub_SubjectNames objectAtIndex:0];
sub_SubjectName = firstName.stringValue;
} else continue;*/
//Subject *subject = [[[Subject alloc]initWithSubjectId:subjectId subjectName:subjectName sub_SubjectId:sub_SubjectId sub_SubjectName:sub_SubjectName]autorelease];
Subject *subject = [[[Subject alloc]initWithSubjectId:subjectId subjectName:subjectName sub_SubjectId:nil sub_SubjectName:nil]autorelease];
//Subject *subject = [[[Subject alloc]initWithSubjectId:subjectId subjectName:nil sub_SubjectId:sub_SubjectId sub_SubjectName:sub_SubjectName]autorelease];
//[rootGroup.groups addObject:group];
[rootSubject.subjects addObject:subject];
}
[doc release];
[xmlData release];
return rootSubject;
}
通过这个,我们得到了subject名称,并在tableviewcontroller中完美地显示了它,但当我单击在另一个视图控制器中提供subject的特定subject时,这里有一个很好的教程,演示了使用语法分析器进行XML解析
两件事:1:请学会正确设置答案的格式。如果您选择一个代码片段并按下带有
{}
图标的按钮,它将正确格式化它。2:看起来你在按submit之前没有写完问题。