如何在UIPickerView标签旁边获得复选标记？

问题描述

Safari中显示的 UIPickerView 在当前选择旁边有一个复选标记。有一个内置的方法来获得这个，或者我必须自己编程？如果我必须创建它，任何人都可以点我一些代码来做这个？感谢

The UIPickerView that appears in Safari has a check mark beside the current choice. Is there a built-in way to get this, or do I have to program it up myself? If I do have to create it, can anyone point me to some code to do this? Thanks

推荐答案

您需要实施 $ b $

You need to implement -pickerView:viewForRow:forComponent:reusingView: from the UIPickerViewDelegate.

您必须创建一个视图，其中包含带有复选标记图像的UIButton，并从 -pickerView：viewForRow：forComponent：reusingView：

You have to create a view, that contains a UIButton with the checkmark image, and return it from -pickerView:viewForRow:forComponent:reusingView:

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