设置PickerView分割线属性&字体属性

// 设置PickerView分割线属性&字体属性
- (UIView *)pickerView:(UIPickerView *)pickerView viewForRow:(NSInteger)row forComponent:(NSInteger)component reusingView:(UIView *)view
{
    // 设置分割线的颜色
    for(UIView *singleLine in pickerView.subviews)
    {
        if (singleLine.frame.size.height < 1)
        {
            singleLine.backgroundColor = [UIColor colorWithRed:50/255.0 green:50/255.0 blue:50/255.0 alpha:1.0];
        }
    }
    
    // 设置文字的属性
    UILabel *pickerLabel = [[UILabel alloc] init];
    pickerLabel.text = self.hours_Array[row];
    pickerLabel.textAlignment = NSTextAlignmentCenter;
    pickerLabel.textColor = [UIColor whiteColor];
    pickerLabel.font = [UIFont systemFontOfSize:23];
   // pickerLabel.font = [UIFont boldSystemFontOfSize:30];// ------加粗字体

    return pickerLabel;
}