objective c - Is there any way to remove the "year" of the date picker?

Question

I have a date picker in a view, but I only want it to display the days and the months, not the years, is there any way to take the year out?

Answer 1

As others have pointed out: You are left alone, to create your own picker, but actually this isn't difficult. A quick prototype, note that I use the first componet for days, second for years, this should be made acording to locale in a real world app:

-(NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
{
    return 2;
}

-(NSInteger)pickerView:pickerView numberOfRowsInComponent:(NSInteger)component
{
    NSUInteger number = 0;
    if (component == 1) {
        number = 12;
    } else {

        NSDateComponents *comps = [[NSCalendar currentCalendar] components:NSDayCalendarUnit | NSMonthCalendarUnit | NSYearCalendarUnit fromDate:[NSDate date]];

        NSUInteger month = [pickerView selectedRowInComponent:1]+1 ;
        NSUInteger actualYear = [comps year];

        NSDateComponents *selectMothComps = [[NSDateComponents alloc] init];
        selectMothComps.year = actualYear;
        selectMothComps.month = month;
        selectMothComps.day = 1;

        NSDateComponents *nextMothComps = [[NSDateComponents alloc] init];
        nextMothComps.year = actualYear;
        nextMothComps.month = month+1;
        nextMothComps.day = 1;

        NSDate *thisMonthDate = [[NSCalendar currentCalendar] dateFromComponents:selectMothComps];
        NSDate *nextMonthDate = [[NSCalendar currentCalendar] dateFromComponents:nextMothComps];

        NSDateComponents *differnce = [[NSCalendar currentCalendar]  components:NSDayCalendarUnit
                                                   fromDate:thisMonthDate
                                                     toDate:nextMonthDate
                                                    options:0];

        number = [differnce day];

    }

    return number;
}

-(void)pickerView:pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
    if (component == 1) {
        [pickerView reloadComponent:0];
    }
}

-(NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
{
    return [NSString stringWithFormat:@"%d", row+1];
}

you'll find an example code at GitHub

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The version you'll find on GitHub knows about the month's names of the most preferred language