OC 年月日選擇器及年月選擇器的實現

1.建立繼承自upview這個檢視彈出類的時間選擇檢視類datepickerview,upview類的內容參照鏈結upview

#import "upview.h"

ns_assume_nonnull_begin
typedef ns_enum(nsinteger, datestyle);
@protocol datepickerviewdelegate -(void)didclicksurewithyear:(nsinteger )year andmonth:(nsinteger )month andday:(nsinteger)day;
@end
@inte***ce datepickerview : upview
//確定按鈕
@property (nonatomic, strong)uibutton *surebtn;
//取消按鈕
@property (nonatomic, strong)uibutton *cancelbtn;
//自定義選擇檢視
@property (nonatomic, strong)uipickerview *pickerview;
//系統選擇檢視
@property (nonatomic, strong)uidatepicker *datepicker;
//選擇的時間模式
@property (nonatomic, assign)datestyle datestyle;
//年，月，日
@property (nonatomic, assign)nsinteger year;
@property (nonatomic, assign)nsinteger month;
@property (nonatomic, assign)nsinteger day;
@property(nonatomic, weak)iddelegate;
@end

#import "datepickerview.h"

@inte***ce datepickerview()@end
@implementation datepickerview
/*// only override drawrect: if you perform custom drawing.
// an empty implementation adversely affects performance during animation.
- (void)drawrect:(cgrect)rect 
*/- (instancetype)init 
#pragma mark - 建立內容檢視
- (void)setcontentview else if (self.datestyle == datestyleyearandmonth)
}#pragma mark - 自定義選擇檢視
- (uipickerview *)pickerview 
return _pickerview;
}#pragma mark - 系統時間檢視
- (uidatepicker *)datepicker 
return _datepicker;
}#pragma mark - 系統時間選擇器變化
- (void)datechanged:(uidatepicker *)datepicker
#pragma mark - uipickerviewdelegate,uipickerviewdatasource
- (nsinteger)numberofcomponentsinpickerview:(uipickerview *)pickerview 
- (nsinteger)pickerview:(uipickerview *)pickerview numberofrowsincomponent:(nsinteger)component else 
}- (nsstring *)pickerview:(uipickerview *)pickerview titleforrow:(nsinteger)row forcomponent:(nsinteger)component else 
}- (void)pickerview:(uipickerview *)pickerview didselectrow:(nsinteger)row incomponent:(nsinteger)component else 
}#pragma mark - 確定按鈕
- (uibutton *)surebtn 
return _surebtn;
}#pragma mark - 取消按鈕
- (uibutton *)cancelbtn 
return _cancelbtn;
}#pragma mark -確定選擇
- (void)sureaction 
}#pragma mark -重寫檢視出現的方法
- (void)show 
[self setcontentview];
[[self lastwidow] addsubview:self];
[uiview animatewithduration:0.3 animations:^completion:^(bool finished) else if (self.datestyle == datestyleyearandmonth)
}];}#pragma mark - 獲取最上層window
- (uiwindow *)lastwidow
}}#pragma mark - 根據date獲取年月日
- (nsdatecomponents *)getyearandmonthanddayfrom:(nsdate *)date 
@end

datepickerview *datev = [[datepickerview alloc]init];

datev.contentheight = 300.0f;
datev.datestyle = datestyledate;
datev.delegate = self;
[datev show];

datepickerview *datev = [[datepickerview alloc]init];

datev.contentheight = 300.0f;
datev.datestyle = datestyleyearandmonth;
datev.delegate = self;
[datev show];

#pragma mark - datepickerviewdelegate

- (void)didclicksurewithyear:(nsinteger)year andmonth:(nsinteger)month andday:(nsinteger)day

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