使用UIPickerView禁用某个组件的交互

Question

我有一个UIPickerView，有4列/组件。

我希望其他3个组件被禁用，或者当其中一个组件正在旋转时，它们无法接受来自用户的交互。

关于如何实现这一目标的任何建议？感谢。

编辑：添加示例代码，如下所示：

- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component{

    NSInteger rs1 = [pickerView selectedRowInComponent:0];
    NSInteger rs2 = [pickerView selectedRowInComponent:1];
    NSInteger rs3 = [pickerView selectedRowInComponent:2];
    NSInteger rs4 = [pickerView selectedRowInComponent:3];

    NSLog(@"selected: %d %d %d %d",rs1, rs2, rs3, rs4);        
}

// returns the number of 'columns' to display.
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView{
    return 4;
}

// returns the # of rows in each component..
- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component{
    return 10;
}

- (UIView *)pickerView:(UIPickerView *)pickerView viewForRow:(NSInteger)row forComponent:(NSInteger)component reusingView:(UIView *)view{
    UIImageView *slotImage = [[UIImageView alloc] init];
    if (component == 0) {
        [slotImage setImage:...];
    }else if (component == 1) {
        [slotImage setImage:...];
    }else if (component == 2) {
        [slotImage setImage:...];
    }else if (component == 3) {
        [slotImage setImage:...];
    }        
    return slotImage;
}