Show a UIDatePicker on bottom and attached with UITextField.

BottomDatePicker.m

    UIDatePicker *datePicker = [[UIDatePicker alloc] init];
    datePicker.backgroundColor = [UIColor whiteColor];
    datePicker.datePickerMode = UIDatePickerModeDate;
    [datePicker setMinimumDate:[self.dateFormatter dateFromString:@"1980-01-01"]];
    [datePicker setMaximumDate:[self.dateFormatter dateFromString:@"2050-01-01"]];
    [datePicker setLocale:[NSLocale localeWithLocaleIdentifier:[CPLanguage sharedInstance].currentLanguageCode]];
    
    self.dateFormatter = [[CPDateFormatter alloc] init];
    [self.dateFormatter setDateFormat:@"dd-MM-yyyy"];
    
    UIToolbar *toolBar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, self.scrollView.frame.size.width, 45)];
    CPBarButtonItem *btnDone = [[CPBarButtonItem alloc] initWithTitle:@"Done" style:UIBarButtonItemStyleBordered target:self action:@selector(showSelectedDate:)];
    [btnDone setTintColor:[UIColor blueColor]];
    [btnDone setObj:datePicker];
    CPBarButtonItem *space = [[CPBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
    [toolBar setTintColor:[UIColor grayColor]];
    [toolBar setItems:[NSArray arrayWithObjects:space, btnDone, nil]];
    
    [self.bankAccountValidFromTextField setInputView:datePicker];
    [self.bankAccountValidFromTextField setInputAccessoryView:toolBar];