使用 UIButton 数组检测按下了哪个按钮 [英] Detect which button is pressed with an UIButton Array

问题描述

我有一个这样的 UIButton 数组:

I have an UIButton array like this:

@property (nonatomic, retain) IBOutletCollection(UIButton) NSArray *btn_Impact_Collection;

我有这个功能:

- (IBAction)impactAction:(id)sender;

在 XIB 文件中，我有九个按钮，每个按钮都通过引用插座集合连接到 btn_Impact_Collection 数组.此外，每个按钮的 Touch_inside 属性都连接到 ImpactAction 函数.

In the XIB file I have nine button, each button is connected to btn_Impact_Collection Array with the Referencing Outlet Collection. Moreover the Touch_inside property of each button is connected to the function ImpactAction.

现在，当单击按钮时，会调用 ImpactAction 函数，但在此函数内部，我如何知道按下了哪个按钮?

Now, when a button is clicked the ImpactAction function is called, but inside this function, how can i know which button is pressed?

提前感谢您的回答！

推荐答案

将 sender 转换为 UIButton 类，这将为您提供单击按钮的实例.我没有 Xcode，但有类似的东西:

Cast sender to UIButton class, and that will give you the instance of the clicked button. I don't have Xcode with me but something like:

if ([sender isMemberOfClass:[UIButton class]])
{
    UIButton *btn = (UIButton *)sender;

    // Then you can reference the title or a tag of the clicked button to do some further conditional logic if you want.
    if([btn.currentTitle isEqualToString:@"title of button"])
    {
        // do something.
    }
    else if(etc...)
}

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