iOS解析XML

最近要做一个关于城市列表的选项，用到xml解析，了解了下，下面贴代码

从网上下了一个城市列表的模子，类似下面这样的

然后新建一个项目  名字就起XMLparse

@interface ViewController ()

{

    NSMutableArray * province;//获取省份数组

    NSMutableArray * citytype;//获取城市列表数组

    NSMutableArray * city;//城市数组

    NSMutableArray * areaname;//乡镇数组

    NSMutableArray * postcode;//市级邮编数组

    NSMutableArray * postcode1;//乡镇邮编

    NSMutableString * tmpstring;//可变字符串临时保存数据用

    UITextField * utf;  //用于输入搜索条件

    UITextField * utf1;//同上

}

@end

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    // Do any additional setup after loading the view, typically from a nib.

    

    [self load:@"result1"];//调用下面的方法，开始解析

    [self showUI];

    UITapGestureRecognizer * tap=[[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(shouhui)];

    [self.view addGestureRecognizer:tap];//点击屏幕空白收回键盘。

    

}

-(void)shouhui{

    [utf resignFirstResponder];

    [utf1 resignFirstResponder];

}

-(BOOL)load:(NSString *)name

{

    

    NSString * file=[[NSBundle mainBundle]pathForResource:name ofType:@"xml"];//取到xml文件

    NSData * date=[NSData dataWithContentsOfFile:file];

    

    //create xml parser

    NSXMLParser *parser;

    parser = [[NSXMLParser alloc] initWithData:date];

    

    [parser setShouldProcessNamespaces:NO];

    [parser setShouldReportNamespacePrefixes:NO];

    [parser setShouldResolveExternalEntities:NO];

    [parser setDelegate:self];//此处添加xml解析代理。注意代理方法必须要在下面写上

    

    //开始解析 

    [parser parse];

    return  YES;

}

-(void)unload

{

    

}

//开始解析xml，此处对数组进行初始化

- (void)parserDidStartDocument:(NSXMLParser *)parser

{

    citytype=[[NSMutableArray alloc]init];

    postcode=[[NSMutableArray alloc]init];

    areaname=[[NSMutableArray alloc]init];

    city=[[NSMutableArray alloc]init];

    province=[[NSMutableArray alloc]init];

    postcode1=[[NSMutableArray alloc]init];

}

- (void)parserDidEndDocument:(NSXMLParser *)parser//XML所有内容解析完成后调用此方法。

{

    NSLog(@"解析完成");

}

//根据选定的内容进行解析。

- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict

{

//备注部分是城市列表部分

    if ([elementName isEqualToString:@"province"]) {//此处elementname是元素名称，在xml中为<province>意思就是以此为总范围，选定其中的字典取值

      NSLog(@"省份=%@", [attributeDict objectForKey:@"name"]);

       [province addObject:[attributeDict objectForKey:@"name"]];

   }

   else if ([elementName isEqualToString:@"city"]) {//此处同上

       NSLog(@"城市类型= %@ 邮编=%@ ", [attributeDict objectForKey:@"name"], [attributeDict objectForKey:@"postcode"]);

      

//取出来的城市类型（城市还是乡镇还是村）和邮编存到数组

      [citytype addObject:[attributeDict objectForKey:@"name"]];

        [postcode addObject:[attributeDict objectForKey:@"postcode"]];

       

   }else if ([elementName isEqualToString:@"area"]){

       NSLog(@"二级城市=%@  邮编%@", [attributeDict objectForKey:@"name"],[attributeDict objectForKey:@"postcode"]);

      [areaname addObject:[attributeDict objectForKey:@"name"]];

       [postcode1 addObject:[attributeDict objectForKey:@"postcode"]];

   }    

}

- (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName

{

//    NSLog(@"=======end element:%@=========", elementName);

   }

- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string

{

//    NSLog(@"=======element content=%@=====", string);

}

#pragma mark 搜索部分

-(void)showUI{

    utf=[[UITextField alloc]init];

    utf.placeholder=@"银行名,如:工商或招商或信用社";

    utf.backgroundColor=[UIColor lightGrayColor];

    utf.frame=CGRectMake(100, 100, 200, 100);

    [self.view addSubview:utf];

    

    utf1=[[UITextField alloc]init];

    utf1.placeholder=@"城市或城镇名";

    utf1.backgroundColor=[UIColor yellowColor];

    utf1.frame=CGRectMake(100, 300, 200, 100);

    [self.view addSubview:utf1];

    

    UIButton * btn=[UIButton buttonWithType:UIButtonTypeCustom];

    btn.backgroundColor=[UIColor greenColor];

    [btn setTitle:@"查询" forState:UIControlStateNormal];

    btn.frame=CGRectMake(100, 450, 100, 100);

    [btn addTarget:self action:@selector(chaxun:) forControlEvents:UIControlEventTouchUpInside];

    [self.view addSubview:btn];

}

//查询按钮点击后开始查询 根据包含词汇查询

-(void)chaxun:(UIButton *)sender{

    for (NSString * name in city) {

        if ([name containsString:utf.text]) {

            if ([name containsString:utf1.text]) {

                NSLog(@"%@",name);

            }

        }

    }

}

效果图

因为放的是城市xml  为了让搜索效果更明晰，又放了一张银行xml，这样搜索的结果可以更清楚明白。只要在viewdidload方法中改写【self load：@“”】中的xml的文件名字即可