iOS中的UIDatePicker 日期选择器

#import "RootViewController.h"

@interface RootViewController ()
@property (nonatomic, retain) UITextField *textField;
@end

@implementation RootViewController
- (void)viewDidLoad {
    [super viewDidLoad];
    
    //使用 DatePicker自定义键盘
    [self customTextFieldForDatePicker];
}

#pragma mark - UIDatePicker 日期选择器



//通常用于自定义键盘
- (void)customTextFieldForDatePicker {

    /** 创建一个 UITextField*/
    self.textField = [[UITextField alloc] initWithFrame:CGRectMake(10, 100, 300, 40)];
    self.textField.tag = 100;
    self.textField.borderStyle = UITextBorderStyleRoundedRect;
    [self.view addSubview:self.textField];
    [self.textField release];
    
    /** 创建一个 Button*/
    UIButton *btn  = [UIButton buttonWithType:UIButtonTypeSystem];
    btn.frame = CGRectMake(120, 150, 100, 30);
    [btn setTitle:@"按钮" forState:UIControlStateNormal];
    [btn addTarget:self action:@selector(handleAction:) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview: btn];
    
#pragma mark - ①初始化方法(高是固定的)

    UIDatePicker *picker = [[UIDatePicker alloc] init];
    picker.tag = 200;
    
#pragma mark - ②设置显示模型
        /*UIDatePickerModeTime           只显示时间
          UIDatePickerModeDate           只显示日期
          UIDatePickerModeDateAndTime    日期和时间
          UIDatePickerModeCountDownTimer 小时和分钟*/
    picker.datePickerMode = UIDatePickerModeDate;
    
#pragma mark - ③设置区域语言(设置12/24小时制是根据手机本身时间显示)

    picker.locale = [[NSLocale alloc] initWithLocaleIdentifier:@"zh_CN"];
    
#pragma mark - ④设置默认日历( 默认为当天)
    
    picker.calendar = [NSCalendar currentCalendar];
    //picker.calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierChinese];
    
#pragma mark - ⑤设置显示的日期

    picker.date = [NSDate date];
    [picker setDate:[NSDate date] animated:YES];
    
#pragma mark - ⑥设置时区(默认为0时区)

    //picker.timeZone = [NSTimeZone defaultTimeZone];
    picker.timeZone = [NSTimeZone timeZoneWithName:@"GMT+8"];
    NSLog(@"%@", picker.date);

#pragma mark - ⑦最小时间

    NSDateFormatter *fMinDate = [[NSDateFormatter alloc] init];
    [fMinDate setDateFormat:@"yyyy-MM-dd HH:mm"];
    NSDate *minDate = [fMinDate dateFromString:@"2015-09-09 08:20"];
    [fMinDate release];
    picker.minimumDate = minDate;
    
#pragma mark - ⑧最大时间

    picker.maximumDate = [NSDate date];

#pragma mark - ⑨倒计时时长(模型设置为UIDatePickerModeCountDownTimer)

    picker.countDownDuration = 2;

#pragma mark - ⑩设置分钟间隔(默认为1,设置的间隔要能被60整除)

    picker.minuteInterval = 1;
    
#pragma mark - addTarget:action:..

    [picker addTarget:self action:@selector(changeValue:) forControlEvents:UIControlEventValueChanged];

    //自定义键盘
    self.textField.inputView = picker;
    [picker release];
    
}

#pragma mark - UIDatePicker的 Target方法

- (void)changeValue:(UIDatePicker *)picker {
    //获取当前UIPickerDate所在的时间

    NSDate *date = [picker date];
    UITextField *textField = (UITextField *)[self.view viewWithTag:100];
    /*//创建日期转换工具
    NSDateFormatter *formatter = [[NSDateFormatter alloc]init];
    //设置时区
    formatter.timeZone = [NSTimeZone timeZoneWithName:@"GMT+8"];
    
    //设定日期转换格式
    formatter.dateFormat = @"yyyy年MM年dd日 hh:mm:ss";
    textField.text = [formatter stringFromDate:date];*/
    
    textField.text = [NSString stringWithFormat:@"%@", date];
}

#pragma mark - 方法
- (void)handleAction:(UIButton *)sender {
    
    //获得 UIDatePicker
    UIDatePicker *picker = (UIDatePicker *)self.textField.inputView;
    
    //设置日期  - (void)setDate:(NSDate *)date animated:(BOOL)animated;
    //[picker setDate:[NSDate date] animated:NO];
    picker.date = [NSDate date];
    //刷新数据
    [self changeValue:picker];

}


 
//编辑结束,回收键盘
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
    [self.view endEditing:YES];
}
 
 
 
 /*NSCalendar设置日历
  + (id)currentCalendar;
  取得当前用户的逻辑日历(logical calendar)
  
  + (id)autoupdatingCurrentCalendar;
  取得当前用户的逻辑日历(logical calendar), ......
  
  - (id)initWithCalendarIdentifier:(NSString *)identifier;
  初始化为各种日历。identifier的范围可以是:
    NSCalendarIdentifierGregorian 阳历
    NSCalendarIdentifierBuddhist 佛历
    NSCalendarIdentifierChinese 中国日历
    NSCalendarIdentifierHebrew 希伯来日历
    NSCalendarIdentifierIslamic 伊斯兰日历
    NSCalendarIdentifierIslamicCivil 伊斯兰民事日历
    NSCalendarIdentifierJapanese 日本日历
  */



@end