如何在uipickerview中选择时更改文字颜色？

Question

我想更改uipickerview选择所在行的颜色。还有另一个问题，但唯一的答案是展示如何将uipickerview中的所有文本更改为某种颜色。我只是希望在查看器中选择的文本显示不同的颜色。

-(UIView *)pickerView:(UIPickerView *)pickerView viewForRow:(NSInteger)row forComponent: (NSInteger) component reusingView:(UIView *)view
{
    NSString *rowItem =[thing objectAtIndex:row];
    UILabel *lblRow = [[UILabel alloc] initWithFrame:CGRectMake(0.0f, 0.0f, [pickerView bounds].size.width, 44.0f];
    [lblRow setTextColor: [UIColor grayColor]];
    [lblRow setTextAlignment:NSTextAlignmentCenter];
    [lblRow setText:rowItem];

    [lblRow setBackgroundColor:[UIColor clearColor];

    return lblRow;

}

Answer 1

如何使用此委托方法：

- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
    NSString *rowItem =[thing objectAtIndex:row];
    UILabel *lblRow = [[UILabel alloc] initWithFrame:CGRectMake(0.0f, 0.0f, [pickerView bounds].size.width, 44.0f];
    [lblRow setTextColor: [UIColor grayColor]];
    [lblRow setTextAlignment:NSTextAlignmentCenter];
    [lblRow setText:rowItem];

    [lblRow setBackgroundColor:[UIColor clearColor];
}