1.创建对象，引入AddressModel类（此处直接贴出AddressModel类的h文件代码和m文件代码）（Address.xml文件在资源里有）
@interface AddressVC ()<UIPickerViewDelegate,UIPickerViewDataSource>
{
UIView * _bgView;
UIView * picker_baseView;
UIPickerView * pickerV;
NSMutableArray * _addressModel_arry;//地域数组
AddressModel * selectedModel;//当前选中的省
}
#import <Foundation/Foundation.h>
@interface AddressModel : NSObject
@property (copy , nonatomic) NSString * proviance;//省
@property (strong ,nonatomic) NSMutableArray * citys;//市
@end
@interface countryModel : NSObject
@property (copy , nonatomic) NSString * cityName;
@property (strong ,nonatomic) NSMutableArray * countrys;//县
@property (strong ,nonatomic) NSMutableArray * zipcodes;//区号
@end
#import "AddressModel.h"
@implementation AddressModel
@end
@implementation countryModel
@end
2.初始化数据
- (void)initData
{
//省市区三级联动
NSString *path = [[NSBundlemainBundle] pathForResource:@"Address"ofType:@"xml"];
NSURL * url = [NSURLfileURLWithPath:path];
//开始xml解析
NSXMLParser * parser = [[NSXMLParseralloc]initWithContentsOfURL:url];
parser.delegate = self;
[parser parse];
}
3.初始化界面，自己在适当地方调用方法 initPickerView- (void)initPickerView
{
if (!_bgView) {
_bgView = [[UIViewalloc] initWithFrame:CGRectMake(0,0, SCREEN_WDITH,SCREEN_HEIGTH)];
_bgView.backgroundColor = [UIColorblackColor];
_bgView.alpha =0;
UITapGestureRecognizer * tapGesture = [[UITapGestureRecognizeralloc]initWithTarget:selfaction:@selector(pickerCancelBtnTarget)];
[_bgView addGestureRecognizer:tapGesture];
}
[[UIApplicationsharedApplication].keyWindowaddSubview:_bgView];
if (!picker_baseView) {
picker_baseView = [[UIViewalloc]initWithFrame:CGRectMake(0,SCREEN_HEIGTH,SCREEN_WDITH,210)];
picker_baseView.backgroundColor = [UIColorwhiteColor];
[[UIApplicationsharedApplication].keyWindowaddSubview:picker_baseView];
UIButton *cancelBtn = [[UIButtonalloc] initWithFrame:CGRectMake(0,0, 90,30)];
[cancelBtn setTitleColor:[UIColordarkGrayColor] forState:UIControlStateNormal];
[cancelBtn setTitle:@"取消"forState:UIControlStateNormal];
[cancelBtn addTarget:selfaction:@selector(pickerCancelBtnTarget)forControlEvents:UIControlEventTouchUpInside];
UIButton *ensureBtn = [[UIButtonalloc] initWithFrame:CGRectMake(0,0, 90,30)];
[ensureBtn setTitle:@"确定"forState:UIControlStateNormal];
[ensureBtn setTitleColor:[UIColordarkGrayColor] forState:UIControlStateNormal];
[ensureBtn addTarget:selfaction:@selector(pickerEnsureBtnTarget)forControlEvents:UIControlEventTouchUpInside];
ensureBtn.right = SCREEN_WDITH;
[picker_baseView addSubview:cancelBtn];
[picker_baseView addSubview:ensureBtn];
}
if (!pickerV) {
pickerV = [[UIPickerViewalloc]initWithFrame:CGRectMake(0,30, SCREEN_WDITH, 180)];
pickerV.backgroundColor = [UIColorclearColor];
pickerV.delegate =self;
pickerV.dataSource =self;
pickerV.showsSelectionIndicator =YES;
[picker_baseViewaddSubview:pickerV];
}
[pickerVreloadAllComponents];
selectedModel =_addressModel_arry[0];
[pickerVselectRow:0inComponent:0animated:YES];
[UIView animateWithDuration:0.25animations:^{
_bgView.alpha =0.5f;
picker_baseView.frame =CGRectMake(0,SCREEN_HEIGTH - 210,SCREEN_WDITH, 210);
}];
}
- (void)pickerCancelBtnTarget
{
[UIView animateWithDuration:0.25animations:^{
_bgView.alpha =0.0f;
picker_baseView.frame =CGRectMake(0,SCREEN_HEIGTH, SCREEN_WDITH,210);
} completion:^(BOOL finished) {
[pickerVremoveFromSuperview];
[picker_baseViewremoveFromSuperview];
picker_baseView =nil;
pickerV = nil;
}];
}
- (void)pickerEnsureBtnTarget
{
//xml
NSString * privance_string = selectedModel.proviance;
countryModel * ctrModel = [selectedModel.citysobjectAtIndex:[pickerVselectedRowInComponent:1]];
NSString * city_string = ctrModel.cityName;
NSString * countryName = [ctrModel.countrysobjectAtIndex:[pickerVselectedRowInComponent:2]];
////
// //[NSString stringWithFormat:@"%@ %@ %@",privance_string,city_string,countryName]];//此处就是需要的地址
[selfpickerCancelBtnTarget];
}
4.实现pickerview的代理方法#pragma -----------------UIPickerViewDelegate,UIPickerDataSource----------
-(NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
{
return 3;
}
-(NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
{
if (component == 0) {
return_addressModel_arry.count;
} else if (component ==1) {
AddressModel * model = _addressModel_arry[[pickerView selectedRowInComponent:0]];
return model.citys.count;
}else if (component ==2){
AddressModel * model = _addressModel_arry[[pickerView selectedRowInComponent:0]];
countryModel * ctrModel = model.citys[[pickerViewselectedRowInComponent:1]];
return ctrModel.countrys.count;
}
return 0;
}
-(CGFloat)pickerView:(UIPickerView *)pickerView rowHeightForComponent:(NSInteger)component
{
return 30.0f;
}
//-(NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
//{
//
// if (component == 0) {
// AddressModel * model = _addressModel_arry[row];
// return model.proviance;
// } else if (component == 1) {
// AddressModel * model = _addressModel_arry[[pickerView selectedRowInComponent:0]];
// countryModel * ctrModel = model.citys[row];
// return ctrModel.cityName;
// }else if (component == 2) {
// AddressModel * model = _addressModel_arry[[pickerView selectedRowInComponent:0]];
// countryModel * ctrModel = model.citys[[pickerView selectedRowInComponent:1]];
// return ctrModel.countrys[row];
// }
// return @"";
//}
- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
if (component == 0) {
//xml
selectedModel =_addressModel_arry[row];
}
//xml
[pickerView selectedRowInComponent:1];
[pickerView reloadComponent:1];
[pickerView selectedRowInComponent:2];
[pickerView reloadComponent:2];
}
- (UIView *)pickerView:(UIPickerView *)pickerView viewForRow:(NSInteger)row forComponent:(NSInteger)component reusingView:(UIView *)view{
NSString *title = @"";
if (component == 0) {
AddressModel * model =_addressModel_arry[row];
title = model.proviance;
} else if (component ==1) {
AddressModel * model = _addressModel_arry[[pickerView selectedRowInComponent:0]];
countryModel * ctrModel = model.citys[row];
title = ctrModel.cityName;
}else if (component ==2) {
AddressModel * model = _addressModel_arry[[pickerView selectedRowInComponent:0]];
countryModel * ctrModel = model.citys[[pickerViewselectedRowInComponent:1]];
title = ctrModel.countrys[row];
}
UILabel* tView = (UILabel*)view;
if (!tView){
tView = [[UILabelalloc] initWithFrame:CGRectZero];
[tView setFont:DiyFont(14)];
// tView.minimumScaleFactor = 9.0f;
// tView.adjustsFontSizeToFitWidth = YES;
tView.numberOfLines = 0;
tView.lineBreakMode =NSLineBreakByCharWrapping;
[tView setText:title];
[tView setTextAlignment:NSTextAlignmentCenter];
if (SCREEN_WDITH <=375) {
CGFloat width = [@"新疆维吾尔自治"sizeWithAttributes:@{NSFontAttributeName:DiyFont(14)}].width;
tView.width = width;
[tView sizeToFit];
}
}
return tView;
}
5.实现pasre代理方法#pragma mark --------NSXMLPasreDelegate-----------
-(void)parserDidStartDocument:(NSXMLParser *)parser
{
_addressModel_arry = [NSMutableArraynew];
}
-(void)parser:(NSXMLParser *)parser parseErrorOccurred:(NSError *)parseError
{
NSLog(@"%@",parseError);
}
-(void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary<NSString *,NSString *> *)attributeDict
{
if ([elementName isEqualToString:@"province"]) {
AddressModel * model = [[AddressModelalloc]init];
model.proviance = attributeDict[@"name"];
model.citys = [NSMutableArrayarrayWithCapacity:0];
[_addressModel_arry insertObject:model atIndex:0];
}
if ([elementName isEqualToString:@"city"]) {
AddressModel * model =_addressModel_arry[0];
countryModel * ctrModel = [[countryModelalloc]init];
ctrModel.countrys = [NSMutableArrayarrayWithCapacity:0];
ctrModel.zipcodes = [NSMutableArrayarrayWithCapacity:0];
ctrModel.cityName = attributeDict[@"name"];
[model.citys insertObject:ctrModel atIndex:0];
}
if ([elementName isEqualToString:@"district"]) {
AddressModel * model =_addressModel_arry[0];
countryModel * ctrModel = model.citys[0];
[ctrModel.countrys insertObject:attributeDict[@"name"] atIndex:0];
[ctrModel.zipcodes insertObject:attributeDict[@"zipcode"] atIndex:0];
}
}
-(void)parserDidEndDocument:(NSXMLParser *)parser
{
//数组倒序排列
for (int i =0; i < _addressModel_arry.count; i++) {
AddressModel * model =_addressModel_arry[i];
model.citys = [NSMutableArrayarrayWithArray:[[model.citysreverseObjectEnumerator] allObjects]];
[_addressModel_arryreplaceObjectAtIndex:i withObject:model];
}
_addressModel_arry = [NSMutableArrayarrayWithArray:[[_addressModel_arryreverseObjectEnumerator] allObjects]];
}