如何从UIPickerview取消选择行 [英] How to deleselect a row from UIPickerview

问题描述

我正在使用picker view，默认情况下它选择第一行.我不要这个选项.例如，我有否"和是"选项.如果我在pickerview中提供此选项，则在pickerview中将选择否"(附加屏幕快照).我不需要.我需要将第一行作为空白.一旦用户选择如果选择否"或是"，则只需将其显示为选定的行即可.相关屏幕截图如下. 怎么做到的?

Hi I am using picker view, by default it is selecting the first row. I don't want this option. For example I am having "No" and "yes" options.If i give this option in pickerview "No " will be selected in pickerview (attached screenshot).I dont need this.I need first row as empty .once the user selects on "No" or "Yes" then only it need to show as a selected row. Related screenshot attached below. How to this?

提前谢谢.

推荐答案

如果要使用UIPickerView来获取此代码，则将选择器视图的第一个component作为空值传递，否则可以使用custom pickerview.

If you want to get this one by using UIPickerView then pass the first component of the picker view as a empty value,otherwise you can use custom pickerview.

[pickerArray addObject:@""];//first element of the picker component.

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