////  ViewController.m//  CityPicker////  Created by vousaimer on 15-1-23.//  Copyright (c) 2015年 va. All rights reserved.//#import "ViewController.h"#import "ProvinceViewController.h"@interface ViewController ()<CityPickerProtocol>@property (nonatomic, strong) UIButton *testButton;@end@implementation ViewController- (void)viewDidLoad {    [super viewDidLoad];        _testButton = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 100, 45)];    [_testButton setTitle:@"cityPicker" forState:UIControlStateNormal];    _testButton.backgroundColor = [UIColor greenColor];    [self.view addSubview:_testButton];    _testButton.center = self.view.center;    [_testButton addTarget:self action:@selector(testCityPicker:)          forControlEvents:UIControlEventTouchUpInside];    }- (void)didReceiveMemoryWarning {    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.}- (void)testCityPicker:(id)sender{    ProvinceViewController *vc = [[ProvinceViewController alloc] initWithNibName:nil bundle:nil];    vc.delegate = self;    [self presentViewController:[[UINavigationController alloc] initWithRootViewController:vc] animated:YES completion:^{            }];}- (void)CityPickerDidCancel:(ProvinceViewController *)provinceVC{    [provinceVC dismissViewControllerAnimated:YES completion:^{            }];}- (void)CityPickerDidChoose:(ProvinceViewController *)provinceVC              withResultDic:(NSDictionary *)dic{    [provinceVC dismissViewControllerAnimated:YES completion:^{                NSString *province = dic[@"Province"];        NSString *city = dic[@"City"];                NSLog(@"province = %@ , city = %@",province, city);            }];}@end

////  CityViewController.m//  CityPicker////  Created by vousaimer on 15-1-24.//  Copyright (c) 2015年 va. All rights reserved.//#import "CityViewController.h"@interface CityViewController ()@end@implementation CityViewController- (void)viewDidLoad {    [super viewDidLoad];        self.tableView.separatorStyle = UITableViewCellSeparatorStyleSingleLine;}- (void)didReceiveMemoryWarning {    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.}- (void)setCityArray:(NSArray *)cityArray{    _cityArray = cityArray;        [[NSOperationQueue mainQueue] addOperationWithBlock:^{        [self.tableView reloadData];    }];}#pragma mark - Table view data source- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{    // Return the number of sections.    return _cityArray.count;}- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"CityCell"];    if(cell == nil)    {        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault                                      reuseIdentifier:@"ProvinceCell"];    }    NSDictionary *dic = self.cityArray[indexPath.row];    cell.textLabel.text = dic[@"name"];        cell.accessoryType = UITableViewCellAccessoryNone;        return cell;}- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{    [tableView deselectRowAtIndexPath:indexPath animated:YES];        if([self.delegate respondsToSelector:@selector(CityPickerDidChoose:withResultDic:)])    {        NSArray *vcArray = self.navigationController.viewControllers;                        [self.delegate CityPickerDidChoose:vcArray[vcArray.count -2]                             withResultDic:@{@"City":self.cityArray[indexPath.row][@"name"],                                             @"Province":self.Province}];    }}@end