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// ViewController.m
#import "ViewController.h"
@interface ViewController ()
@property(nonatomic,retain) NSData* xmlData;
@end
@implementation ViewController
@synthesize xmlData = _xmlData;
@synthesize xmlParser = _xmlParser;
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
NSString* str = @"<city>\
\
<pois>\
<poi catalog=\"生活服务\" name=\"火车票飞机票售票处\" x=\"12960121.140000\" y=\"4864264.440000\" />\
<poi catalog=\"购物\" name=\"皂就人生\" x=\"12960087.850000\" y=\"4864269.380000\" />\
<poi catalog=\"美食\" name=\"必胜客(惠新东桥店)\" x=\"12960191.040000\" y=\"4864423.390000\" /> \
<poi catalog=\"房产小区\" name=\"惠中园小区(北门)\" x=\"12960001.910000\" y=\"4864271.850000\" />\
</pois>\
\
<roads>\
<road id=\"J50F001020_37715\" name=\"北四环东路\" valid=\"1\" width=\"2\" >\
<points>\
<point order=\"0\" vid=\"10011018120904120936600\" x=\"12960310.270000\" y=\"4864348.300000\" />\
<point order=\"1\" vid=\"10011018120904120937600\" x=\"12960296.410000\" y=\"4864347.700000\" />\
</points>\
</road>\
</roads>\
</city>";
str = [str stringByAppendingString:str];
NSData *xmlData = [str dataUsingEncoding: NSUTF8StringEncoding];
self.xmlData = xmlData;
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (void)dealloc
{
[_xmlData release];
_xmlParser.delegate = nil;
[_xmlParser release];
[super dealloc];
}
#pragma mark----NSXMLParser----
- (IBAction)testNSXMLParserEvent:(id)sender
{
//对xml进行解析需要使用NSXMLParser类，首先声明一个NSXMLParser对象
//开始解析
NSXMLParser* xmlParser = [[NSXMLParser alloc] initWithData:_xmlData];//初始化NSXMLParser对象
[xmlParser setDelegate:self];//设置NSXMLParser对象的解析方法代理
[xmlParser parse];//调用代理解析NSXMLParser对象，看解析是否成功
self.xmlParser = xmlParser;
[xmlParser release];
}
////解析器，从两个结点之间读取内容
//- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string {
// NSLog(@"foundCharacters %@",string);
//}
//获得结点结尾的值
- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName
namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName {
NSLog(@"didEndElement %@",elementName);
if ([elementName isEqualToString:@"road"]) {
//这样可以把road关于刚才记录的point数组放进来，组成road完整的数据
}
}
//获得结点头的值
- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName
namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName
attributes:(NSDictionary *)attributeDict
{
NSLog(@"didStartElement %@",elementName);
if([elementName isEqualToString: @"poi"])
{
NSString* catalog = [attributeDict objectForKey:@"catalog"];
NSString* name = [attributeDict objectForKey:@"name"];
double x = [[attributeDict objectForKey:@"x"] doubleValue];
double y = [[attributeDict objectForKey:@"y"] doubleValue];
NSLog(@"poi data = {catalog=%@,name=%@,x =%lf,y = %lf}",catalog,name,x,y);
}
else if([elementName isEqualToString: @"point"])
{
NSInteger order = [[attributeDict objectForKey:@"order"] intValue];
NSString* vid = [attributeDict objectForKey:@"vid"];
double x = [[attributeDict objectForKey:@"x"] doubleValue];
double y = [[attributeDict objectForKey:@"y"] doubleValue];
NSLog(@"point data = {order=%d,vid=%@,x =%lf,y = %lf}",order,vid,x,y);
}
else if([elementName isEqualToString: @"road"])
{
NSString* name = [attributeDict objectForKey:@"name"];
NSString* roadID = [attributeDict objectForKey:@"id"];
NSInteger width = [[attributeDict objectForKey:@"width"] intValue];
NSInteger valid = [[attributeDict objectForKey:@"valid"] intValue];
NSLog(@"road data = {name=%@,roadID=%@,width=%d,valid %d}",name,roadID,width,valid);
}
}
@end
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