//
// ViewController.m
// 04-键盘处理
//
//
#import "ViewController.h"
#import "XMGProvince.h"
@interface ViewController ()<UITextFieldDelegate,UIPickerViewDataSource,UIPickerViewDelegate>
@property (weak, nonatomic) IBOutlet UITextField *birthdayField;
@property (nonatomic, weak) UIDatePicker *datePicker;
@property (nonatomic, weak) UIPickerView *pickerView;
@property (weak, nonatomic) IBOutlet UITextField *cityField;
@property (nonatomic, strong) NSMutableArray *provinces;
@property (nonatomic, assign) NSInteger proIndex;
@end
@implementation ViewController
// 懒加载省会
- (NSMutableArray *)provinces
{
if (_provinces == nil) {
// 装所有的省会
_provinces = [NSMutableArray array];
// 加载plist文件
NSString *filePath = [[NSBundle mainBundle] pathForResource:@"provinces.plist" ofType:nil];
NSArray *arr = [NSArray arrayWithContentsOfFile:filePath];
for (NSDictionary *dict in arr) {
// 字典转模型
XMGProvince *p = [XMGProvince provinceWithDict:dict];
[_provinces addObject:p];
}
}
return _provinces;
}
#pragma mark - UITextFieldDelegate
// 是否允许用户输入文字
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string{
return NO;
}
// 文本框开始编辑的时候调用
- (void)textFieldDidBeginEditing:(UITextField *)textField
{
if (textField == _birthdayField) {
// 给生日文本框赋值
[self dateChange:_datePicker];
}else{
// 给城市文本框赋值
[self pickerView:_pickerView didSelectRow:0 inComponent:0];
}
}
#pragma mark -viewDidLoad
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
// 设置文本框的代码
_birthdayField.delegate = self;
_cityField.delegate = self;
// 自定义生日键盘
[self setUpBirthdayKeyboard];
// 自定义城市键盘
[self setUpCityKeyboard];
}
#pragma mark - 自定义城市键盘
- (void)setUpCityKeyboard
{
UIPickerView *pickerView = [[UIPickerView alloc] init];
_pickerView = pickerView;
pickerView.dataSource = self;
pickerView.delegate = self;
_cityField.inputView = pickerView;
}
#pragma mark -UIPickerView
#pragma mark UIPickerView的数据源
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
{
return 2;
}
// pickerView的第0列描述省会,有多少个省
// pickerView的第1列描述选中的省会,有多少个城市
- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
{
if (component == 0) { // 描述省会
return self.provinces.count;
}else{ // 描述选中的省会的城市
// 获取省会
XMGProvince *p = self.provinces[_proIndex];
return p.cities.count;
}
}
#pragma mark -UIPickerView的代理
- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
{
if (component == 0) { // 描述省会
// 获取省会
XMGProvince *p = self.provinces[row];
return p.name;
}else{ // 描述选中的省会的城市
// 获取选中的省会的角标
NSInteger index = [pickerView selectedRowInComponent:0];
// 获取选中省会
XMGProvince *p = self.provinces[_proIndex];
// 当前选中的内蒙古省,只有12个城市,角标0~11,但是右边城市是北京,北京的城市大于12个城市,所以滚动的时候会出现越界。
NSLog(@"province:%@, count:%ld row:%ld",p.name,p.cities.count,row);
#warning TODO:
return p.cities[row];
}
}
// 全局断点就是帮我们定位到出bug的那一行。
// 滚动UIPickerView就会调用
- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
if (component == 0) { // 滚动省会,刷新城市(1列)
// 记录当前选中的省会
_proIndex = [pickerView selectedRowInComponent:0];
[pickerView reloadComponent:1];
}
// 给城市文本框赋值
// 获取选中省会
XMGProvince *p = self.provinces[_proIndex];
// 获取选中的城市
NSInteger cityIndex = [pickerView selectedRowInComponent:1];
NSString *cityName = p.cities[cityIndex];
_cityField.text = [NSString stringWithFormat:@"%@ %@",p.name,cityName];
}
#pragma mark -自定义生日键盘
- (void)setUpBirthdayKeyboard
{
// 创建UIDatePicker
// 注意:UIDatePicker有默认的尺寸,可以不用设置frame
UIDatePicker *picker = [[UIDatePicker alloc] init];
_datePicker = picker;
// 设置地区 zh:中国
picker.locale = [NSLocale localeWithLocaleIdentifier:@"zh"];
// 设置日期的模式
picker.datePickerMode = UIDatePickerModeDate;
// 监听UIDatePicker的滚动
[picker addTarget:self action:@selector(dateChange:) forControlEvents:UIControlEventValueChanged];
_birthdayField.inputView = picker;
}
// 当UIDatePicker滚动的时候调用
// 给生日文本框赋值
- (void)dateChange:(UIDatePicker *)datePicker
{
NSLog(@"%@",datePicker.date);
// 日期转换字符串
NSDateFormatter *fmt = [[NSDateFormatter alloc] init];
fmt.dateFormat = @"yyyy-MM-dd";
NSString *dateStr = [fmt stringFromDate:datePicker.date];
_birthdayField.text = dateStr;
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end