[_durationPicker selectRow: row
inComponent: 0
animated: NO];
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
- (NSInteger) pickerView: (UIPickerView *) picker
numberOfRowsInComponent: (NSInteger) component
- (NSString *) pickerView: (UIPickerView *) picker
titleForRow: (NSInteger) row
forComponent: (NSInteger) component
- (void) pickerView: (UIPickerView *) picker
didSelectRow: (NSInteger) row
inComponent: (NSInteger) component