问题
i have a functionility for show count down timer in format, but when uidatepicker in count down timer mode , it show only HH:MM.
how i can add a extra field for second in uidatepickerview.
回答1:
how i can add a extra field for second in uidatepickerview.
You can't. UIDatePicker only displays hours and minutes in countdown mode. If you need to display seconds as well, you'll have to recreate it yourself using a UIPickerView.
As always, you should file an enhancement request to request this functionality.
回答2:
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView;
{
return 2;
}
it will create section in your picker view.
来源：https://stackoverflow.com/questions/12742501/add-second-field-when-uipickerview-in-countdowntimer-mode-in-iphone