iOS: Tapku calendar library - allow selecting multiple dates for current month

问题

I am using Tapku library for calendar implementation. I could see that there is a way to add Markers for predefined start and end date but I want to allow users to select/unselect any number of dates from current month only, and want to generate event for each action.

Moreover, I have switched off the month navigation functionality by returning nil for Left and Right arrow to display only current month but not able to remove events for few previous and next months Date tiles that gets displayed on current month. I can still select previous month's day 31st to navigate to previous month or select 1st on next month to navigate to next month. Can I restrict the date selection to only current month please?

Thanks.

回答1:

The touches are handled in TKCalendarMonthView.m in the following method:

- (void) reactToTouch:(UITouch*)touch down:(BOOL)down

look at the block at row 563:

if(portion == 1)
{
    selectedDay = day;
    selectedPortion = portion;
    [target performSelector:action withObject:[NSArray arrayWithObject:[NSNumber numberWithInt:day]]];
}
else if(down)
{
    // this is the important part for you.
    // ignore it by adding a return here (or remove the following three lines)
    return;
    [target performSelector:action withObject:[NSArray arrayWithObjects:[NSNumber numberWithInt:day],[NSNumber numberWithInt:portion],nil]];
    selectedDay = day;
    selectedPortion = portion;
}

The selecting/deselecting perhaps doesn't work as you expect. It's not like setDateSelected and setDateDeselected.. instead there is a single UIImageView*, which represents the selected state. And that view is moved around to the current position. You can search for self.selectedImageView in the code to see, what is happening.

So its not that easy to introduce multiple-date-selection. The architecture isn't built for that.

回答2:

In TKCalendarMonthView there is a method name

-(void) reactToTouch:(UITouch*)touch down:(BOOL)down

in that method comment this line

[target performSelector:action withObject:[NSArray arrayWithObjects:[NSNumber numberWithInt:day],[NSNumber numberWithInt:portion],nil]];

this wont allow you to change month. You can store all selected date in an array and pass all the values in

- (NSArray*)calendarMonthView:(TKCalendarMonthView *)monthView marksFromDate:(NSDate *)startDate toDate:(NSDate *)lastDate

The above method is used to put tiles but if u want selection image then u can replace it with tile image

回答3:

You can also try this code:

You can do this by first entering the dates in to an array. code for this is.

- (void)calendarMonthView:(TKCalendarMonthView *)monthView didSelectDate:(NSDate *)d {
NSLog(@"selected Date IS - %@",inDate);

[myArray addObject:d];

for (id entry in myArray)
{

    if (inDate == nil && outDate == nil)
    {
        inDate = d;
        outDate = d;
    }
    if ([d compare:inDate] == NSOrderedAscending)
    {
        inDate = d;
    }
    if ([d compare:outDate] == NSOrderedDescending)
    {
        outDate = d;
    }

    d = nil;
}

}

After this you have to use a button click action by which you can make the dates selected between these two dates. Code for it is:

 - (IBAction)goBtn:(id)sender
  {
NSLog(@"startDate is: %@",inDate);
NSLog(@"endDate is: %@",outDate);

[calendar reload];
inDate = nil;
outDate = nil;

}

}

Then in one delegate method you just have to make an array containing all the dates between these two dates. It will be called just after the button click. Code for it is:

 - (NSArray*)calendarMonthView:(TKCalendarMonthView *)monthView marksFromDate:(NSDate *)startDate toDate:(NSDate *)lastDate {
//***********
NSMutableArray *tempData = [[NSMutableArray alloc] init];
NSDate *nextDate;
for ( nextDate = inDate ; [nextDate compare:outDate] < 0 ; nextDate = [nextDate addTimeInterval:24*60*60] ) {
    // use date
    NSLog(@"%@",nextDate);
    [tempData addObject:[NSString stringWithFormat:@"%@",nextDate]];
}
[tempData addObject:[NSString stringWithFormat:@"%@",outDate]];
//***********


NSMutableArray *marks = [NSMutableArray array];


NSCalendar *cal = [NSCalendar currentCalendar];
[cal setTimeZone:[NSTimeZone timeZoneForSecondsFromGMT:0]];

NSDateComponents *comp = [cal components:(NSMonthCalendarUnit | NSMinuteCalendarUnit | NSYearCalendarUnit |
                                          NSDayCalendarUnit | NSWeekdayCalendarUnit | NSHourCalendarUnit | NSSecondCalendarUnit)
                                fromDate:startDate];
NSDate *d = [cal dateFromComponents:comp];

NSDateComponents *offsetComponents = [[NSDateComponents alloc] init];
[offsetComponents setDay:1];


while (YES) {
    if ([d compare:lastDate] == NSOrderedDescending) {
        break;
    }

    if ([tempData containsObject:[d description]]) {
        [marks addObject:[NSNumber numberWithBool:YES]];
    } else {
        [marks addObject:[NSNumber numberWithBool:NO]];
    }

    d = [cal dateByAddingComponents:offsetComponents toDate:d options:0];
}

return [NSArray arrayWithArray:marks];

}

I hope, this helped you. Please let me know if you face any problem.

来源：https://stackoverflow.com/questions/9686684/ios-tapku-calendar-library-allow-selecting-multiple-dates-for-current-month

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ios

calendar

tapku