宏定义
#define RGB(x,y,z) [UIColor colorWithRed:x/255.0 green:y/255.0 blue:z/255.0 alpha:1.0]


可设置的属性
//确定按钮颜色
@property (nonatomic,strong)UIColor *doneButtonColor;

//年-月-日-时-分 文字颜色(默认橙色)
@property (nonatomic,strong)UIColor *dateLabelColor;

//滚轮日期颜色(默认黑色)
@property (nonatomic,strong)UIColor *datePickerColor;

//限制最大时间（默认2099）datePicker大于最大日期则滚动回最大限制日期
@property (nonatomic, retain) NSDate *maxLimitDate;

//限制最小时间（默认0） datePicker小于最小日期则滚动回最小限制日期
@property (nonatomic, retain) NSDate *minLimitDate;

//大号年份字体颜色(默认灰色)想隐藏可以设置为clearColor
@property (nonatomic, retain) UIColor *yearLabelColor;

//隐藏背景年份文字
@property (nonatomic, assign) BOOL hideBackgroundYearLabel;

//默认滚动到当前时间
-(instancetype)initWithDateStyle:(WSDateStyle)datePickerStyle CompleteBlock:(void(^)(NSDate *))completeBlock;

//滚动到指定的的日期
-(instancetype)initWithDateStyle:(WSDateStyle)datePickerStyle scrollToDate:(NSDate *)scrollToDate CompleteBlock:(void(^)(NSDate *))completeBlock;

typedef enum{
DateStyleShowYearMonthDayHourMinute  = 0,    //年-月-日-时-分
DateStyleShowMonthDayHourMinute,             //月-日-时-分
DateStyleShowYearMonthDay,                   //年-月-日
DateStyleShowMonthDay,                       //月-日
DateStyleShowHourMinute                      //时-分

}WSDateStyle;

//_________________________年-月-日-时-分____________________________________________
//年-月-日-时-分
WSDatePickerView *datepicker = [[WSDatePickerView alloc] initWithDateStyle:DateStyleShowYearMonthDayHourMinute CompleteBlock:^(NSDate *selectDate) {

NSString *dateString = [selectDate stringWithFormat:@"yyyy-MM-dd HH:mm"];
NSLog(@"选择的日期：%@",dateString);
[btn setTitle:dateString forState:UIControlStateNormal];
}];
datepicker.dateLabelColor = [UIColor orangeColor];//年-月-日-时-分 颜色
datepicker.datePickerColor = [UIColor blackColor];//滚轮日期颜色
datepicker.doneButtonColor = [UIColor orangeColor];//确定按钮的颜色
[datepicker show];

WSDatePickerView *datepicker = [[WSDatePickerView alloc] initWithDateStyle:DateStyleShowMonthDayHourMinute CompleteBlock:^(NSDate *selectDate) {

NSString *date = [selectDate stringWithFormat:@"MM-dd HH:mm"];
NSLog(@"选择的月日时分：%@",date);
}];
[datepicker show];

WSDatePickerView *datepicker = [[WSDatePickerView alloc] initWithDateStyle:DateStyleShowYearMonthDay CompleteBlock:^(NSDate *selectDate) {

NSString *date = [selectDate stringWithFormat:@"yyyy-MM-dd"];
NSLog(@"选择的年月日：%@",date);

}];
[datepicker show];

WSDatePickerView *datepicker = [[WSDatePickerView alloc] initWithDateStyle:DateStyleShowYearMonthDay CompleteBlock:^(NSDate *selectDate) {

NSString *date = [selectDate stringWithFormat:@"yyyy-MM-dd"];
NSLog(@"选择的年月日：%@",date);

}];
[datepicker show];

WSDatePickerView *datepicker = [[WSDatePickerView alloc] initWithDateStyle:DateStyleShowMonthDay CompleteBlock:^(NSDate *selectDate) {

NSString *date = [selectDate stringWithFormat:@"MM-dd"];
NSLog(@"选择的月日：%@",date);

}];
[datepicker show];

WSDatePickerView *datepicker = [[WSDatePickerView alloc] initWithDateStyle:DateStyleShowHourMinute CompleteBlock:^(NSDate *selectDate) {

NSString *date = [selectDate stringWithFormat:@"HH:mm"];
NSLog(@"选择的时分：%@",date);

}];
[datepicker show];

//_____________________指定日期2011-11-11 11:11_______________________________
NSDateFormatter *minDateFormater = [[NSDateFormatter alloc] init];
[minDateFormater setDateFormat:@"yyyy-MM-dd HH:mm"];
NSDate *scrollToDate = [minDateFormater dateFromString:@"2011-11-11 11:11"];

WSDatePickerView *datepicker = [[WSDatePickerView alloc] initWithDateStyle:DateStyleShowYearMonthDayHourMinute scrollToDate:scrollToDate CompleteBlock:^(NSDate *selectDate) {

NSString *date = [selectDate stringWithFormat:@"yyyy-MM-dd HH:mm"];
NSLog(@"选择的日期：%@",date);
[btn setTitle:date forState:UIControlStateNormal];

}];
datepicker.dateLabelColor = RGB(65, 188, 241);//年-月-日-时-分 颜色
datepicker.datePickerColor = [UIColor blackColor];//滚轮日期颜色
datepicker.doneButtonColor = RGB(65, 188, 241);//确定按钮的颜色
datepicker.hideBackgroundYearLabel = YES;//隐藏背景年份文字
[datepicker show];