1、具体内容就不再赘述了。直接看关键代码。
viewController.h
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//// ViewController.h// ParseXmlToRealizeChooseCityDemo//// Created by zhanggui on 15/7/25.// Copyright (c) 2015年 zhanggui. All rights reserved.//#import <UIKit/UIKit.h>@interface ViewController : UIViewController<UIPickerViewDataSource,UIPickerViewDelegate,NSXMLParserDelegate>
- (IBAction)getAction:(UIButton *)sender;
@property (weak, nonatomic) IBOutlet UIPickerView *pickerView;
@end |
viewController.m
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//// ViewController.m// ParseXmlToRealizeChooseCityDemo//// Created by zhanggui on 15/7/25.// Copyright (c) 2015年 zhanggui. All rights reserved.//#import "ViewController.h"@interface ViewController ()
{ NSMutableDictionary *province,*city;
NSMutableArray *provinceArr,*cityArr,*areaArr;
NSString *tempProvince,*tempCity,*tempArea;
NSArray *finalProvinceArr,*finalCityArr,*finalAreaArr;
NSString *seletedStr;
}@end@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
NSString *xmlFilePath = [[NSBundle mainBundle]pathForResource:@"province_data" ofType:@"xml"];
NSData *data = [NSData dataWithContentsOfFile:xmlFilePath];
NSXMLParser *xmlParser = [[NSXMLParser alloc]initWithData:data];
xmlParser.delegate = self;
province = [NSMutableDictionary new];
city = [NSMutableDictionary new];
provinceArr = [NSMutableArray new];
cityArr = [NSMutableArray new];
[xmlParser parse];
finalProvinceArr = [province allKeys];
NSDictionary *tempCityDic = [province objectForKey:[finalProvinceArr objectAtIndex:0]];
finalCityArr = [tempCityDic allKeys];
finalAreaArr = [tempCityDic objectForKey:[finalCityArr objectAtIndex:0]];
}#pragma mark - xmlParseDelegateMethod-(void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict {
if ([elementName isEqualToString:@"province"]) {
tempProvince = [attributeDict objectForKey:@"name"];
}
if ([elementName isEqualToString:@"city"]) {
tempCity = [attributeDict objectForKey:@"name"];
areaArr = [NSMutableArray new];
}else if ([elementName isEqualToString:@"district"]) {
[areaArr addObject:[attributeDict objectForKey:@"name"]];
}
}
-(void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName {
if ([elementName isEqualToString:@"city"]) {
NSMutableArray *temp =[[NSMutableArray alloc] initWithArray:areaArr] ;
[city setValue:temp forKey:tempCity];
[areaArr removeAllObjects];
}else if ([elementName isEqualToString:@"province"]) {
NSDictionary *tempDic = [[NSDictionary alloc] initWithDictionary:city];
[province setValue:tempDic forKey:tempProvince];
[city removeAllObjects];
}
}#pragma mark - UIPickerViewDeletate-(NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView {
return 3;
}-(NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component {
if(component==0) {
return [finalProvinceArr count];
}else if (component==1) {
return [finalCityArr count];
}else {
return [finalAreaArr count];
}
}-(NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component {
if (component==0) {
return finalProvinceArr[row];
}else if (component==1) {
return finalCityArr[row];
}else
{
return finalAreaArr[row];
}
}-(void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component {
if (component==0) {
finalCityArr =[[province objectForKey:[finalProvinceArr objectAtIndex:row]] allKeys];
[pickerView selectRow:0 inComponent:1 animated:NO];
[pickerView reloadComponent:1];
if ([finalCityArr count]!=0) {
NSString *selectedProvince = [self pickerView:pickerView titleForRow:[pickerView selectedRowInComponent:0] forComponent:0];
NSString *selectedCity = [self pickerView:pickerView titleForRow:[pickerView selectedRowInComponent:1] forComponent:1];
finalAreaArr = [[province objectForKey:selectedProvince] objectForKey:selectedCity];
[pickerView selectRow:0 inComponent:2 animated:NO];
[pickerView reloadComponent:2];
}
}else if (component==1) {
NSString *selectedProvince = [self pickerView:pickerView titleForRow:[pickerView selectedRowInComponent:0] forComponent:0];
NSString *selectedCity = [self pickerView:pickerView titleForRow:[pickerView selectedRowInComponent:1] forComponent:1];
finalAreaArr = [[province objectForKey:selectedProvince] objectForKey:selectedCity] ;
[pickerView selectRow:0 inComponent:2 animated:NO];
[pickerView reloadComponent:2];
// finalAreaArr = [province objectForKey:[province objectForKey:<#(id)#>]]; }
NSString *pro =[self pickerView:pickerView titleForRow:[pickerView selectedRowInComponent:0] forComponent:0];
NSString *cit =[self pickerView:pickerView titleForRow:[pickerView selectedRowInComponent:1] forComponent:1];
NSString *are = [self pickerView:pickerView titleForRow:[pickerView selectedRowInComponent:2] forComponent:2];
seletedStr =[NSString stringWithFormat:@"%@%@%@",pro,cit,are];
}#pragma mark - UIButton Method- (IBAction)getAction:(UIButton *)sender {
UIAlertView *aler = [[UIAlertView alloc] initWithTitle:@"选中结果" message:seletedStr delegate:self cancelButtonTitle:@"确定" otherButtonTitles: nil];
[aler show];
}@end |
2、province_data.xml文件下载地址：http://pan.baidu.com/s/1c0Cr9ja
3、源码下载地址：https://github.com/ScottZg/GetProvinceCityAreaByXMLFile
4、有什么疑问欢迎评论提问。