在 FSCalendar ObjC 中禁用对一系列日期的选择答案

【问题标题】：Disable selection to a range of dates in FSCalendar ObjC在 FSCalendar ObjC 中禁用对一系列日期的选择
【发布时间】：2018-08-30 04:57:03
【问题描述】：

我是 ObjC 的新手，我正在使用 FSCalendar 库。我需要禁用对一系列日期的选择。例如：从日期 - 2018-01-01 到日期 - 2018-12-30。我使用以下方法禁用过去的日期。

- (BOOL)calendar:(FSCalendar *)calendar shouldSelectDate:(NSDate *)date atMonthPosition:(FSCalendarMonthPosition)monthPosition

请帮我禁用日期范围的选择

【问题讨论】：

标签： objective-c cocoapods fscalendar

【解决方案1】：

我对 FSCalendar 不是很熟悉，但我快速浏览了一下，您应该能够设置 startDateToAvoid 和 endingDateToAvoid，然后检查从 shouldSelectDate 传入的日期是否在该范围内，如果是则返回 NO （禁止选择）：

#import "ViewController.h"
#import "FSCalendar.h"

@interface ViewController () <FSCalendarDelegate, FSCalendarDataSource>
@property (strong, nullable) NSDate *startingDateToAvoid;
@property (strong, nullable) NSDate *endingDateToAvoid;
@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
    formatter.dateFormat = @"yyyy-MM-dd";
    self.startingDateToAvoid = [formatter dateFromString:@"2018-01-01"];
    self.endingDateToAvoid = [formatter dateFromString:@"2018-12-30"];
    // Do any additional setup after loading the view, typically from a nib.
}

- (BOOL)_shouldAllowSelectionOfDate:(NSDate *)date {
    // if you want it to be inclusive of the starting/ending dates (i.e. they can't select 2018-01-01 as well) then uncomment this line below
    /*if ([date isEqualToDate:self.startingDateToAvoid] || [date isEqualToDate:self.endingDateToAvoid]) {
        return NO;
    }*/
    // if the date passed in is between your starting and ending date, we don't want to allow selection
    if ([date compare:self.startingDateToAvoid] == NSOrderedDescending &&
        [date compare:self.endingDateToAvoid] == NSOrderedAscending) {
        return NO;
    }
    return YES;
}

- (BOOL)calendar:(FSCalendar *)calendar shouldSelectDate:(NSDate *)date atMonthPosition:(FSCalendarMonthPosition)monthPosition {
    return [self _shouldAllowSelectionOfDate:date];
}

@end

【讨论】：