根据类型限制 UIDatePicker 控件，比如（成人、儿童、婴儿）Objective C

Question

我正在尝试根据类型限制 UIDatePicker 控件，例如（成人、儿童、婴儿）。下面是目前正在做的调用 DatePicker

cell.leftDetailTextField.inputView=[self customDatePickerView];

-(UIDatePicker *)customDatePickerView{
    NSLog (@"Date picker called");
    datePicker = [[UIDatePicker alloc]init];
    [datePicker setDatePickerMode:UIDatePickerModeDate];
    //datePicker.maximumDate=[NSDate date];  // to prevent future date selection:
    
    NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierGregorian];
    NSDate *currentDate = [NSDate date];
    NSDateComponents *comps = [[NSDateComponents alloc] init];
    [comps setYear:-90];
    NSDate *minDate = [gregorian dateByAddingComponents:comps toDate:currentDate  options:0];
    [comps setYear:-12];
    NSDate *maxDate = [gregorian dateByAddingComponents:comps toDate:currentDate  options:0];
    
    datePicker.minimumDate = minDate;
    datePicker.maximumDate = maxDate;
    
    [datePicker addTarget:self action:@selector(dateChanged:) forControlEvents:UIControlEventValueChanged];
    return datePicker;
}

如何将值动态传递给此方法调用。我需要通过 Adult(val 1), Children(Val 2), Infant (val 3)

Answer 1

-(UIDatePicker *)customDatePickerView:(NSInteger)val{
    datePicker = [[UIDatePicker alloc]init];
    [datePicker setDatePickerMode:UIDatePickerModeDate];
    
    //datePicker.maximumDate=[NSDate date];  // to prevent future date selection:
    NSCalendar *gregorian = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierGregorian];
    NSDate *currentDate = [NSDate date];
    NSDateComponents *comps = [[NSDateComponents alloc] init];
    NSDate *minDate, *maxDate;
    switch (val) {
        case 1: // Adult
                [comps setYear:-90];
                minDate = [gregorian dateByAddingComponents:comps toDate:currentDate  options:0];
                [comps setYear:-12];
                maxDate = [gregorian dateByAddingComponents:comps toDate:currentDate  options:0];
            break;
        case 2: // Child
                [comps setYear:-12];
                minDate = [gregorian dateByAddingComponents:comps toDate:currentDate  options:0];
                [comps setYear:-2];
                maxDate = [gregorian dateByAddingComponents:comps toDate:currentDate  options:0];
            break;
        case 3: // Infant
                [comps setYear:-2];
                minDate = [gregorian dateByAddingComponents:comps toDate:currentDate  options:0];
                [comps setYear:-0];
                maxDate = [gregorian dateByAddingComponents:comps toDate:currentDate  options:0];
            break;
            
        default:
            break;
    }
    
    datePicker.minimumDate = minDate;
    datePicker.maximumDate = maxDate;
    
    [datePicker addTarget:self action:@selector(dateChanged:) forControlEvents:UIControlEventValueChanged];
    return datePicker;
}

- (void) dateChanged:(UIDatePicker *)sender{
    UIDatePicker *datePicker=(UIDatePicker *)sender;
    NSDateFormatter *dateFormat =[[NSDateFormatter alloc]init];
    [dateFormat setDateFormat:@"dd-MMM-yyyy"];
    self.activeTextField.text = [dateFormat stringFromDate:datePicker.date];
}

根据类型限制 UIDatePicker 控件，比如（成人、儿童、婴儿）Objective C

Restrict the UIDatePicker control based on type, say (Adult, Child, Infant) Objective C

objective-c

uidatepicker