The Button element - MDN

在Objective-C和Swift中，UIView类有一个tag属性，它是一个整型值，用于在视图层次结构中唯一标识一个视图。这个属性非常实用，特别是在需要通过编程方式区分 ...

Depending on the platform, a button can contain a symbol (or icon), a text label, or both to help people understand what it does. Note. In macOS and visionOS, ...

The label is a view that describes the button's action — for example, by showing text, an icon, or both. The label of a button can be any kind of view, such as ...

2 天前 · The <button> HTML element is an interactive element activated by a user with a mouse, keyboard, finger, voice command, or other assistive technology.

在Web 應用中，我們常常會看到畫面的右下角會提供一個按鈕，點下去後會展開更多的按鈕，用來提供一些功能（例如分享到Facebook/Line/Weibo）. 這次要在iOS 中實現這個功能。

為了在function 裡判斷點選的button ，我們可以用tag 區分。不過這方方有個麻煩的地方，我們必須另外設定button 的tag，而且tag 的數字也會讓程式碼看起來較 ...

方法2: 判斷tag. 將四個button 分別設定tag，比方設為tag 0，1，2，3。 Press enter or click to view image in full size. 讀取tag 數字判斷點選的是第幾個 ...

Tags are a convenient way to identify which button was actioned by the user without needing to map it back to a outlet.

You can set a tag in the storyboard for each of the buttons. Then you can identify them this way: @IBAction func mainButton(sender: UIButton) { println(sender. ...

A useful button component to use in your app designs. Fully customized by variants: 4 types: filled, tinted, gray, plain; 3 sizes: large, medium and small.