【代码笔记】iOS-时间选择框

来源：互联网发布：美工做一个首页多少钱编辑：程序博客网时间：2024/06/05 14:57

一，效果图。

二，工程图。

三，代码。

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];        }//点击任意处，弹出时间选择框-(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];}//开始结束时间选择框- (void)dateChanged:(id)sender{    NSDate *date = datePicker.date;        NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];    [dateFormatter setDateFormat:@"yyyy-MM-dd hh:mm"];    //设备默认的值    dateFormatter.locale=[NSLocale systemLocale];    //将所选择的时候转化为需要的时间格式    NSString *dateStr = [NSString stringWithFormat:@"%@",[dateFormatter stringFromDate:date]];    timeLabel.text=dateStr;        //让选择完时间后，选择框，消失，这个时间可以自己调整    [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.}

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