1、介绍：
现在越来越多的项目都用到了地址，尤其是电商O2O的购物平台，我之前做的教育产品和电商产品都用到了，而实现地址的设置用到的技术就是城市级联列表，即普遍的做法就是自定义选择器控件UIPickerView，然后从本地整理的城市plist文件获取省份、城市、县镇三级级联。现在整理一下，分享给大家。
2、效果图如下：
3、用法：
(1)导入本地城市级联文件：provincecity.plist.zip
(2)导入DDMeZonePickerView.h头文件，在控制器通过[UIView Animation]的动画控制创建的DDMeZonePickerView视图对象的frame让其显示或隐藏即可，被选择的城市然后通过block进行回传。
4、废话不多说，实现代码如下：
DDMeZonePickerView.h
// DDMeZonePickerView.h
// BiaoJiePay
//
// Created by 夏远全 on 16/11/19.
// Copyright © 2016年 广州东德科技. All rights reserved.
// #import <UIKit/UIKit.h> /**
* 声明block
*/
typedef void (^adressBlock)(NSString *adress); @interface DDMeZonePickerView : UIView
/**
* 定义block属性
*/
@property (copy,nonatomic)adressBlock adressBlock;
/**
* 传递地址
*/
-(void)chooseAdressBlock:(adressBlock)adressBlock; @end
DDMeZonePickerView.m
//
// DDMeZonePickerView.m
// BiaoJiePay
//
// Created by 夏远全 on 16/11/19.
// Copyright © 2016年 广州东德科技. All rights reserved.
// #import "DDMeZonePickerView.h" @interface DDMeZonePickerView ()<UIPickerViewDataSource,UIPickerViewDelegate> /** picker选择器*/
@property (strong, nonatomic)UIPickerView *customPicker;
/**
* 原始省份数组
*/
@property (strong, nonatomic)NSArray *provinceArray;
/**
* 原始城市数组
*/
@property (strong, nonatomic)NSArray *cityArray;
/**
* 原始区镇数组
*/
@property (strong, nonatomic)NSArray *townArray;
/**
* 选择省份字典
*/
@property (strong, nonatomic)NSDictionary *selectedProvinceDic;
/**
* 选择城市字典
*/
@property (strong, nonatomic)NSDictionary *selectedCityDic;
/**
* 确认
*/
@property (strong,nonatomic)UIButton *sureButton;
/**
* 取消
*/
@property (strong,nonatomic)UIButton *cancelButton; @end @implementation DDMeZonePickerView
/**
* 懒加载
*/
-(UIPickerView *)customPicker{
if (!_customPicker) {
_customPicker = [[UIPickerView alloc]init];
_customPicker.dataSource = self;
_customPicker.delegate = self;
_customPicker.backgroundColor = XYQColor(, , );
}
return _customPicker;
}
-(NSArray *)provinceArray{
if (!_provinceArray) {
_provinceArray = [NSArray array];
}
return _provinceArray;
}
-(NSArray *)cityArray{
if (!_cityArray) {
_cityArray = [NSArray array];
}
return _cityArray;
}
-(NSArray *)townArray{
if (!_townArray) {
_townArray = [NSArray array];
}
return _townArray;
}
-(NSDictionary *)selectedProvinceDic{
if (!_selectedProvinceDic) {
_selectedProvinceDic = [NSDictionary dictionary];
}
return _selectedProvinceDic;
}
-(NSDictionary *)selectedCityDic{
if (!_selectedCityDic) {
_selectedCityDic = [NSDictionary dictionary];
}
return _selectedCityDic;
} /**
* 初始化
*/
-(instancetype)initWithFrame:(CGRect)frame{
self = [super initWithFrame:frame];
if (self) {
[self getPickerData];
self.customPicker.frame = CGRectMake(, , SCREEN_WIDTH, frame.size.height);
[self addSubview:self.customPicker];
}
return self;
} /**
* 从本地文件获取数据
*/
- (void)getPickerData{ NSString *path = [[NSBundle mainBundle] pathForResource:@"provincecity" ofType:@"plist"];
self.provinceArray = [NSArray arrayWithContentsOfFile:path]; //所有的省份 self.selectedProvinceDic = self.provinceArray[];
self.cityArray = [self.selectedProvinceDic objectForKey:@"city"];//所有的城市 self.selectedCityDic = self.cityArray[];
self.townArray = [self.selectedCityDic objectForKey:@"area"];//所有的区/县
} #pragma mark UIPickerViewDataSource
//设置有多少列
-(NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView{
return ;
} //设置每列多少行
-(NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
{
if (component == ) {
return self.provinceArray.count;
} else if (component == ) {
return self.cityArray.count;
} else {
return self.townArray.count;
}
} #pragma mark - UIPickerViewDelegate
//自定义字体大小
- (UIView *)pickerView:(UIPickerView *)pickerView viewForRow:(NSInteger)row forComponent:(NSInteger)component reusingView:(UIView *)view
{ UILabel *myView = nil;
if (component == ) {
myView = [[UILabel alloc] initWithFrame:CGRectMake(0.0, 0.0, , )] ;
myView.text = [[self.provinceArray objectAtIndex:row] objectForKey:@"name"]; }else if(component == ){
myView = [[UILabel alloc] initWithFrame:CGRectMake(0.0, 0.0, (SCREEN_WIDTH-)/, )];
myView.text = [[self.cityArray objectAtIndex:row] objectForKey:@"name"]; }else{
myView = [[UILabel alloc] initWithFrame:CGRectMake(0.0, 0.0, (SCREEN_WIDTH-)/-, )];
myView.text = [[self.townArray objectAtIndex:row] objectForKey:@"name"];
}
myView.textAlignment = NSTextAlignmentCenter;
myView.font = [UIFont systemFontOfSize:]; //用label来设置字体大小
myView.backgroundColor = [UIColor whiteColor]; return myView;
} //设置宽度
- (CGFloat)pickerView:(UIPickerView *)pickerView widthForComponent:(NSInteger)component
{
return SCREEN_WIDTH/;
} //返回行高
- (CGFloat)pickerView:(UIPickerView *)pickerView rowHeightForComponent:(NSInteger)component
{
return ;
} //通过代理方法didSelectRows获取数据
- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component { if (component == ) { //获取省份选中行
self.selectedProvinceDic = self.provinceArray[row];
self.cityArray = [self.selectedProvinceDic objectForKey:@"city"];//所有的城市
self.selectedCityDic = self.cityArray[];
self.townArray = [self.selectedCityDic objectForKey:@"area"];//所有的区/县
[pickerView reloadComponent:];
[pickerView reloadComponent:]; }
if (component == ) { //获取城市选中行
NSInteger cityselectedRow = [pickerView selectedRowInComponent:];
self.selectedCityDic = self.cityArray[cityselectedRow];
self.townArray = [self.selectedCityDic objectForKey:@"area"];//所有的区/县
[pickerView reloadComponent:];
} //获取选中的省
NSString *provice = [NSString stringWithFormat:@"%@",[[self.provinceArray objectAtIndex:[pickerView selectedRowInComponent:]] objectForKey:@"name"]];
//获取选中的市
NSString *city = [NSString stringWithFormat:@"%@",[[self.cityArray objectAtIndex:[pickerView selectedRowInComponent:]] objectForKey:@"name"]];
//获取选中的县
NSString *town = [NSString stringWithFormat:@"%@",[[self.townArray objectAtIndex:[pickerView selectedRowInComponent:]] objectForKey:@"name"]]; //赋值
NSString *adressText = [NSString stringWithFormat:@"%@%@%@",provice,city,town];
self.adressBlock(adressText);
} /**
* 地址传值
*/
-(void)chooseAdressBlock:(void (^)(NSString *))adressBlock{
if (adressBlock) {
self.adressBlock = [adressBlock copy];
}
}@end
在ViewController.h懒加载选择器调用block取值：
/**
* 选择器
*/
-(DDMeZonePickerView *)zonePickerView{
if (!_zonePickerView) {
_zonePickerView = [[DDMeZonePickerView alloc]initWithFrame:CGRectMake(, SCREEN_HEIGHT, SCREEN_WIDTH, )];
[_zonePickerView chooseAdressBlock:^(NSString *adress) {
self.updateField.text = adress;
}];
}
return _zonePickerView;
}
本人原创，欢迎大家分享，转载需注明出处