从 UIPickerView 的选定行设置 UIButton 的标题-移动开发问题

Set Title of UIButton from Selected Row of UIPickerView(从 UIPickerView 的选定行设置 UIButton 的标题)

本文介绍了从 UIPickerView 的选定行设置 UIButton 的标题的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

详细的场景是这样的:

我正在使用循环创建 10 个按钮并将标签设置为 0-9.在点击每个按钮时，我正在调用一个 UIPickerView，我在其中从不同的数组加载数据.直到这里我得到了预期的结果.但我希望从 pickerView 中选择的行应该设置为相应按钮的标题.

I am creating 10 buttons using a loop and setting the tags from 0-9. On tap of each button I am calling a UIPickerView in which I am loading data from different arrays. Till here I am getting the expected results. But I want the selected row from the pickerView should set as the title of respective button.

我尝试过的方式 - 我将选定的行存储在 pickerViewDelegate 方法中的 NSString 中，并尝试像 setTitle 一样:

Way I tried - I stored the selected row in a NSString in the pickerViewDelegate method and trying to setTitle like :

[myButton setTitle:selectedString forState:UIControlStateNormal]

但它没有反映在任何按钮中.

but it's not reflecting in any of the buttons.

知道我错过了什么吗?

谢谢

推荐答案

你的 UIButton 点击动作，

- (IBAction) buttonTaped:(UITapGestureRecognizer *)sender 
{
    myButton=(UIButton *) sender.view; //It will make reference to tapped button,
    //Once you've this, in your picker delegate, you can set title for it
    //myButton should be declare in your controller's header file.
}

或

- (IBAction) buttonTaped:(UIButton *)sender 
{
    myButton=(UIButton *) sender;
}

您的 UIPickerView 委托

- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component 
{
    [myButton setTitle:[yourArray objectAtIndex:row] forState:UIControlStateNormal];
}

希望对您有所帮助！

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