ios - 如何将 pickerView 设置为之前选择的值？

Question

我正在使用选择器视图从数组中选择一个值，并将其保存到数据库中。下次用户进入选择器视图“字段”时，我想将突出显示的选择器设置为保存到数据库的值。我怎么做 ？

Answer 1

您可以使用以下方法-selectRow:inComponent:animated:：UIPickerView

// I suppose that you have such variables and one component
UIPickerView *pickerView;
NSArray *variants;

id userVariant = // get variant from db
NSUInteger row = [variants indexOfObject:userVariant];
if (row != NSNotFound) {
    [pickerView selectRow:[variants indexOfObject:userVariant] inComponent:0 animated:YES];
}