ios - FSCalendar - 我想在 longPressGesture 上选择日期

Question

如何使用 FSCalendar 使用 LongpressGesture 选择日期？？

我正在使用 WenchaoD/FSCalendar来自 github 的第三方日历。

- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath
{
    NSDate *selectedDate = [self.calculator dateForIndexPath:indexPath];
    FSCalendarMonthPosition monthPosition = [self.calculator monthPositionForIndexPath:indexPath];
    FSCalendarCell *cell;
    if (monthPosition == FSCalendarMonthPositionCurrent) {
        cell = (FSCalendarCell *)[collectionView cellForItemAtIndexPath:indexPath];
    } else {
        cell = [self cellForDate:selectedDate atMonthPosition:FSCalendarMonthPositionCurrent];
        NSIndexPath *indexPath = [collectionView indexPathForCell:cell];
        if (indexPath) {
            [collectionView selectItemAtIndexPath:indexPath animated:NO scrollPosition:UICollectionViewScrollPositionNone];
        }
    }
    if (![_selectedDates containsObject:selectedDate]) {
        cell.selected = YES;
        [cell performSelecting];
    }
    [self enqueueSelectedDate:selectedDate];
    [self.delegateProxy calendar:self didSelectDate:selectedDate atMonthPosition:monthPosition];
    [self selectCounterpartDate:selectedDate];
}

Answer 1

按住并多选:

yourCalendarObject.swipeToChooseGesture.enabled = YES;
yourCalendarObject.allowsMultipleSelection = YES;

按住并单选:

[yourCalendarObject setAllowsSelection: YES];
[yourCalendarObject setAllowsMultipleSelection: NO];
yourCalendarObject.swipeToChooseGesture.enabled = YES;

编辑:为了区分点击或按住操作，FSCalendar 没有该功能，但您可以添加一个属性。

FSCalendar.h

你需要在你的头文件里面添加这个属性:

@interface FSCalendar : UIView

/**
Difference the tap or hold gesture date selection
When the value = YES is a UILongPressGestureRecognizer
When the value = NO is a tap selection
*/

@property (readonly, nonatomic) BOOL isLongPressGesture;

@end

FSCalendar.m

您需要在- (void)handleSwipeToChoose:(UILongPressGestureRecognizer *)pressGesture 中添加属性的设置值，如下所示:

- (void)handleSwipeToChoose:(UILongPressGestureRecognizer *)pressGesture
{
    switch (pressGesture.state) {
        case UIGestureRecognizerStateBegan:
        case UIGestureRecognizerStateChanged: {

            // New property value when the selection is UILongPressGestureRecognizer
            _isLongPressGesture = YES; 

            NSIndexPath *indexPath = [self.collectionView indexPathForItemAtPoint:[pressGesture locationInView:self.collectionView]];
            if (indexPath && ![indexPath isEqual:self.lastPressedIndexPath]) {
                NSDate *date = [self.calculator dateForIndexPath:indexPath];
                FSCalendarMonthPosition monthPosition = [self.calculator monthPositionForIndexPath:indexPath];
                if (![self.selectedDates containsObject:date] && [self collectionView:self.collectionView shouldSelectItemAtIndexPath:indexPath]) {
                    [self selectDate:date scrollToDate:NO atMonthPosition:monthPosition];
                    [self collectionView:self.collectionView didSelectItemAtIndexPath:indexPath];
                } else if (self.collectionView.allowsMultipleSelection && [self collectionView:self.collectionView shouldDeselectItemAtIndexPath:indexPath]) {
                    [self deselectDate:date];
                    [self collectionView:self.collectionView didDeselectItemAtIndexPath:indexPath];
                }
            }
            self.lastPressedIndexPath = indexPath;
            break;
        }
        case UIGestureRecognizerStateEnded:
        case UIGestureRecognizerStateCancelled: {
            self.lastPressedIndexPath = nil;
            break;
        }
        default:
            break;
    }

}

那么你需要修改方法 - (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath 像这样:

- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath
{
    NSDate *selectedDate = [self.calculator dateForIndexPath:indexPath];
    FSCalendarMonthPosition monthPosition = [self.calculator monthPositionForIndexPath:indexPath];
    FSCalendarCell *cell;
    if (monthPosition == FSCalendarMonthPositionCurrent) {
        cell = (FSCalendarCell *)[collectionView cellForItemAtIndexPath:indexPath];
    } else {
        cell = [self cellForDate:selectedDate atMonthPosition:FSCalendarMonthPositionCurrent];
        NSIndexPath *indexPath = [collectionView indexPathForCell:cell];
        if (indexPath) {
            [collectionView selectItemAtIndexPath:indexPath animated:NO scrollPosition:UICollectionViewScrollPositionNone];
        }
    }
    if (![_selectedDates containsObject:selectedDate]) {
        cell.selected = YES;
        [cell performSelecting];
    }
    [self enqueueSelectedDate:selectedDate];
    [self.delegateProxy calendar:self didSelectDate:selectedDate atMonthPosition:monthPosition];
    [self selectCounterpartDate:selectedDate];

    // Reset the value of property
    _isLongPressGesture = NO;
}

所以你可以试试这个:

- (void)calendar:(FSCalendar *)calendar didSelectDate:(NSDate *)date atMonthPosition:(FSCalendarMonthPosition)monthPosition
{
    if (calendar.isLongPressGesture)
        NSLog(@"Long Press");
    else
        NSLog(@"Tap Gesture");
}

享受代码:)