DatePicker使用的跳坑之旅

之前在公司做一个抢单的项目，里面用到一个DatePicker的控件，写个文章记录一下，以后要用，来copy代码

1.设置属性

@property(nonatomic,strong)UIDatePicker*datePicker;

2.做初始化和设置

self.datePicker=[[UIDatePickeralloc]init];

//设置背景色

（1）self.datePicker.backgroundColor=[UIColorgroupTableViewBackgroundColor];

（2）self.datePicker.backgroundColor=[UIColorclearColor];

[self.viewaddSubview:self.datePicker];

//添加事件，当值改变的时候 注意选择UIControlEventValueChanged

[self.datePickeraddTarget:selfaction:@selector(dateChanged:)forControlEvents:UIControlEventValueChanged];

NSLocale*locale =[[NSLocalealloc]initWithLocaleIdentifier:@"zh_CN"];//设置时间的显示格式为中文显示

self.datePicker.locale=locale;

//当前时间创建NSDate

NSDate*localDate =[NSDatedate];

//在当前时间加上的时间：格里高利历

NSCalendar*gregorian =[[NSCalendaralloc]initWithCalendarIdentifier:NSCalendarIdentifierGregorian];

NSDateComponents*offsetComponents =[[NSDateComponentsalloc]init];

//设置时间

[offsetComponents setYear:0];

[offsetComponents setMonth:0];

[offsetComponents setDay:6];

[offsetComponents setHour:24];

[offsetComponents setMinute:60];

[offsetComponents setSecond:0];

//设置最大值时间

NSDate*maxDate =[gregorian dateByAddingComponents:offsetComponents toDate:localDateoptions:0];

self.datePicker.minimumDate= localDate;

self.datePicker.maximumDate= maxDate;

[alert.view addSubview:self.datePicker];

3.当datepicker的值改变时候具体的事件

-(void)dateChanged:(id)sender

{

UIDatePicker*control =(UIDatePicker*)sender;

NSDate*date =control.date;

NSLog(@"原来的格式：%@",date);

NSDate*pickerDate=[self.datePicker date];

NSDateFormatter*pickerFormatter = [[NSDateFormatter alloc]init];

//[pickerFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"];

[pickerFormatter setDateFormat:@"MM-dd HH:mm"];

NSString*dateString = [pickerFormatter stringFromDate:pickerDate];

self.dateStr=dateString;

}