Question

我是ObjC的新手，正在使用FSCalendar库。我需要禁用对日期范围的选择。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

请帮助我禁止选择日期范围

Answer 1

我对FSCalendar并不是很熟悉，但是我快速浏览了一下，您应该能够设置一个startingDateToAvoid和EndingDateToAvoid，然后检查从shouldSelectDate传入的日期是否在该范围内，然后返回否（不允许选择）：

#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

在FSCalendar ObjC中禁用对日期范围的选择

1 个答案: