setEnabled() 和 setClickable()，有什么区别? [英] setEnabled() vs setClickable(), what is the difference?

问题描述

直到现在，当我想阻止用户按下按钮时，我会设置 button.setClickable(false); 并且通常将文本更改为某种灰色(让用户知道该按钮已禁用).今天我偶然发现了 setEnabled() 属性.

Until now, when I wanted to stop the user from pressing the button, I would set the button.setClickable(false); and usually change the text to some kind of grey colour (to let the user know that the button is disabled). Today I stumbled upon the setEnabled() property.

于是我去文档看下面的方法说明:

So I went to the documentation to see the method's explanation below:

setEnabled(boolean enabled)
   Set the enabled state of this view.

这到底是什么意思?启用状态/可点击状态和禁用状态/不可点击状态有什么区别?有人可以解释一下我以前做的事情，使用 clickable 属性和使用 setEnabled() 属性有什么区别吗?什么时候应该使用?我搜索了 Stack Overflow，但找不到任何相关内容.

What does this even mean? What is the difference between enable state/clickable state and disabled state/not clickable state? Could someone please explain what is the difference between doing what I was doing previously, using the clickable property and using the setEnabled() property? What should be used when? I searched Stack Overflow but could not find anything related.

推荐答案

这到底是什么意思?

What the hell is that mean?

引用维基百科页面的GUI 小部件":

在应用程序的上下文中，可以在给定的时间点启用或禁用小部件.启用的小部件具有响应事件的能力，例如击键或鼠标操作.无法响应此类事件的小部件被视为已禁用.禁用小部件的外观通常与启用小部件不同；禁用的小部件可能会以较浅的颜色绘制，或者可能会以某种方式在视觉上变得模糊.见右图示例.

In the context of an application, a widget may be enabled or disabled at a given point in time. An enabled widget has the capacity to respond to events, such as keystrokes or mouse actions. A widget that cannot respond to such events is considered disabled. The appearance of disabled widget is typically different from an enabled widget; the disabled widget may be drawn in a lighter color, or may be visually obscured in some way. See the image to the right for an example.

这个概念已经存在了几十年，可以在大多数 GUI 框架中找到.

This concept has been around for a couple of decades and can be found in most GUI frameworks.

启用状态/可点击状态和禁用状态/不可点击状态有什么区别?

what is the difference between enable state/clickable state and disabled state/ not clickable state?

在 Android 中，不可点击的小部件不会响应点击事件.禁用的小部件不仅不可点击，而且还直观地表明它已禁用.

In Android, a widget that is not clickable will not respond to click events. A disabled widget not only is not clickable, but it also visually indicates that it is disabled.

你是什么意思:..因为它使按钮在视觉上被禁用"?它如何在视觉上改变它?

what do you mean by: "..since it makes the Button visually "disabled"? how does it changes it visually?

使 Button 看起来和响应像 Button 的是它的背景，它是一个 StateListDrawable.有一个用于禁用状态的特定图像.

What makes a Button look and respond like a Button is its background, which is a StateListDrawable. There is a specific image used for the disabled state.

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