【代碼筆記】時間選擇框，代碼筆記

【代碼筆記】時間選擇框，代碼筆記

一， 。

二，工程圖。

三，代碼。

RootViewController.h

#import <UIKit/UIKit.h>@interface RootViewController : UIViewController{    UIDatePicker *datePicker;    UILabel *timeLabel;}@end

 

RootViewController.m

#import "RootViewController.h"@interface RootViewController ()@end@implementation RootViewController- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil{    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];    if (self) {        // Custom initialization    }    return self;}- (void)viewDidLoad{    [super viewDidLoad];    // Do any additional setup after loading the view.        self.title=@"timerPicker";        timeLabel=[[UILabel alloc]init];    timeLabel.backgroundColor=[UIColor redColor];    timeLabel.frame=CGRectMake(10, 100, 300, 50);    timeLabel.textAlignment=NSTextAlignmentCenter;    [self.view addSubview:timeLabel];        }//點擊任意處，彈出時間選擇框-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{    datePicker = [[UIDatePicker alloc]initWithFrame:CGRectMake(0, self.view.frame.size.height-216, 0, 0)];    datePicker.datePickerMode = UIDatePickerModeDateAndTime;    [datePicker addTarget:self action:@selector(dateChanged:) forControlEvents:UIControlEventValueChanged ];    [self.view addSubview:datePicker];}//開始結束時間選擇框- (void)dateChanged:(id)sender{    NSDate *date = datePicker.date;        NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];    [dateFormatter setDateFormat:@"yyyy-MM-dd hh:mm"];    //裝置預設的值    dateFormatter.locale=[NSLocale systemLocale];    //將所選擇的時候轉化為需要的時間格式    NSString *dateStr = [NSString stringWithFormat:@"%@",[dateFormatter stringFromDate:date]];    timeLabel.text=dateStr;        //讓選擇完時間後，選擇框，消失，這個時間可以自己調整    [UIView animateWithDuration:.5f delay:.5f options:UIViewAnimationOptionCurveEaseInOut animations:^{        [datePicker setFrame:CGRectMake(0, self.view.frame.size.height, 0, 0)];    } completion:nil];}- (void)didReceiveMemoryWarning{    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.}