OStack程序员社区-中国程序员成长平台

标题: ios - DSLCalendarView 的自定义实现，用于日历等 expedia [打印本页]

---

作者: 菜鸟教程小白    时间: 2022-12-12 16:15
标题: ios - DSLCalendarView 的自定义实现，用于日历等 expedia

我一直在尝试修改存储库， https://github.com/PeteC/DSLCalendarView允许用户通过点击并自动选择两者之间的日期来选择开始和结束日期。我通过在随附的演示中实现以下代码来实现这一点:

问题在于它破坏了拖动日历以选择日期范围的原始实现。

非常感谢任何帮助/指导，如果您知道任何其他实现相同目标的库，我将不胜感激。我正在寻找的功能是: 允许用户选择第一个日期、最后一个日期并在中间显示日期作为选择。

在 ViewController.m 中

- (DSLCalendarRange*)calendarViewDSLCalendarView *)calendarView didDragToDayNSDateComponents *)day selectingRangeDSLCalendarRange *)range {

    if (!self.startDate) {

        //        self.startDate = [self.dateFormatter dateFromString:[NSString stringWithFormat"%d/%d/%d",range.startDay.month, range.startDay.day,range.startDay.year]];
        //self.startDate = range.s

        self.startDate = range.startDay;

        self.hasSelectedStartDate = YES;

        return [[DSLCalendarRange alloc] initWithStartDay:self.startDate endDay:self.startDate];



        NSLog(@"start date set to: %@",self.startDate);
    }
    else if (self.startDate && !self.endDate)
    {

        //self.endDate = [self.dateFormatter dateFromString:[NSString stringWithFormat"%d/%d/%d",range.startDay.month, range.startDay.day,range.startDay.year]];
        self.endDate = range.endDay;

        NSLog(@"Start date is: %@",self.startDate);
        NSLog(@"end date set to: %@",self.endDate);

        return [[DSLCalendarRange alloc] initWithStartDay:self.startDate endDay:self.endDate];


    } else if (self.startDate && self.endDate)
    {
        return [[DSLCalendarRange alloc] initWithStartDay:self.startDate endDay:self.endDate];

        self.hasSelectedStartDate = NO;
    }
    NSLog(@"Select range programattically");

}

在 DSLCalendarView.m 中，我将以下代码添加到 touchEnded 以补充上述实现:

//added code: Aakash
- (void)touchesEndedNSSet *)touches withEventUIEvent *)event {
//added condition here besides the other code
if ([self.delegate respondsToSelectorselector(hasSelectedStartDate)]) {
    self.flag = [self.delegate performSelectorselector(hasSelectedStartDate)];
    NSLog(@"Value: %hhd",self.flag);
}

if (!self.draggedOffStartDay && [self.draggingStartDay isEqual:touchedView.day] && !self.flag) {
self.selectedRange = [[DSLCalendarRange alloc] initWithStartDay:touchedView.day endDay:touchedView.day];
}

触摸处理的原始代码是:

#pragma mark - Touches

- (void)touchesBeganNSSet *)touches withEventUIEvent *)event {
    DSLCalendarDayView *touchedView = [self dayViewForTouches:touches];
    if (touchedView == nil) {
        self.draggingStartDay = nil;
        return;
    }

    self.draggingStartDay = touchedView.day;
    self.draggingFixedDay = touchedView.day;
    self.draggedOffStartDay = NO;

    DSLCalendarRange *newRange = self.selectedRange;
    if (self.selectedRange == nil) {
        newRange = [[DSLCalendarRange alloc] initWithStartDay:touchedView.day endDay:touchedView.day];
    }
    else if (![self.selectedRange.startDay isEqual:touchedView.day] && ![self.selectedRange.endDay isEqual:touchedView.day]) {
        newRange = [[DSLCalendarRange alloc] initWithStartDay:touchedView.day endDay:touchedView.day];
    }
    else if ([self.selectedRange.startDay isEqual:touchedView.day]) {
        self.draggingFixedDay = self.selectedRange.endDay;
    }
    else {
        self.draggingFixedDay = self.selectedRange.startDay;
    }

    if ([self.delegate respondsToSelectorselector(calendarView:didDragToDay:selectingRange]) {
    newRange = [self.delegate calendarView:self didDragToDay:touchedView.day selectingRange:newRange];
    }
    self.selectedRange = newRange;

    [self positionCalloutViewForDayView:touchedView]; }

- (void)touchesMovedNSSet *)touches withEventUIEvent *)event {
    if (self.draggingStartDay == nil) {
        return;
    }

    DSLCalendarDayView *touchedView = [self dayViewForTouches:touches];
    if (touchedView == nil) {
        self.draggingStartDay = nil;
        return;
    }

    DSLCalendarRange *newRange;
    if ([touchedView.day.date compare:self.draggingFixedDay.date] == NSOrderedAscending) {
        newRange = [[DSLCalendarRange alloc] initWithStartDay:touchedView.day endDay:self.draggingFixedDay];
    }
    else {
        newRange = [[DSLCalendarRange alloc] initWithStartDay:self.draggingFixedDay endDay:touchedView.day];
    }

    if ([self.delegate respondsToSelectorselector(calendarView:didDragToDay:selectingRange]) {
        newRange = [self.delegate calendarView:self didDragToDay:touchedView.day selectingRange:newRange];
    }
    self.selectedRange = newRange;

    if (!self.draggedOffStartDay) {
        if (![self.draggingStartDay isEqual:touchedView.day]) {
            self.draggedOffStartDay = YES;
        }
    }

    [self positionCalloutViewForDayView:touchedView]; }

- (void)touchesEndedNSSet *)touches withEvent:(UIEvent *)event {
    if (self.draggingStartDay == nil) {
        return;
    }

    DSLCalendarDayView *touchedView = [self dayViewForTouches:touches];
    if (touchedView == nil) {
        self.draggingStartDay = nil;
        return;
    }


    if (!self.draggedOffStartDay && [self.draggingStartDay isEqual:touchedView.day]) {
    self.selectedRange = [[DSLCalendarRange alloc] initWithStartDay:touchedView.day endDay:touchedView.day];
    }

    self.draggingStartDay = nil;

    // Check if the user has dragged to a day in an adjacent month
    if (touchedView.day.year != _visibleMonth.year || touchedView.day.month != _visibleMonth.month) {
        // Ask the delegate if it's OK to animate to the adjacent month
        BOOL animateToAdjacentMonth = YES;
        if ([self.delegate respondsToSelectorselector(calendarView:shouldAnimateDragToMonth]) {
            animateToAdjacentMonth = [self.delegate calendarView:self shouldAnimateDragToMonth:[touchedView.dayAsDate dslCalendarView_monthWithCalendar:_visibleMonth.calendar]];
        }

        if (animateToAdjacentMonth) {
            if ([touchedView.dayAsDate compare:_visibleMonth.date] == NSOrderedAscending) {
                [self didTapMonthBack:nil];
            }
            else {
                [self didTapMonthForward:nil];
            }
        }
    }

    if ([self.delegate respondsToSelectorselector(calendarView:didSelectRange]) {
        [self.delegate calendarView:self didSelectRange:self.selectedRange];
    }
     }

---

Best Answer-推荐答案

您可以通过它自己的演示示例来实现这一点，

只需在 ViewController.m 中查找 - (void)calendarView:(DSLCalendarView *)calendarView didSelectRange:(DSLCalendarRange *)range 委托(delegate)

用这个替换它，

- (void)calendarView:(DSLCalendarView *)calendarView didSelectRange:(DSLCalendarRange *)range
{
    if (range != nil)
    {
    if(startD == nil) {
        if(endD == nil) {
            [self start:nil];
        }else{
            [self end:nil];
        }
    }else{
        if(endD == nil) {
            [self end:nil];
        }
    }

    [self draw:nil];
}

现在在同一个类中寻找- (IBAction)draw:(id)sender，

用这个替换它，

- (IBAction)draw:(id)sender {
    if(startD && endD) {
        [_calendarView setSelectedRange:[[DSLCalendarRange alloc] initWithStartDay:startD.startDay endDay:endD.endDay]];
        startD = nil;
        endD = nil;
    }

    else if(startD)
    [_calendarView setSelectedRange:[[DSLCalendarRange alloc] initWithStartDay:startD.startDay endDay:startD.endDay]];
    else if(endD)
        [_calendarView setSelectedRange:[[DSLCalendarRange alloc] initWithStartDay:endD.startDay endDay:endD.endDay]];
}

关于ios - DSLCalendarView 的自定义实现，用于日历等 expedia，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/19846379/

---

欢迎光临 OStack程序员社区-中国程序员成长平台 (https://ostack.cn/)

Powered by Discuz! X3.4