嘿， 我有，暂时，与9补丁图像边框的自定义视图。

Hey, I have, for the time being, a custom view with a 9-patch image as a border.

这是自定义视图放置三次在LinearLayout中，所以它看起来是这样的：

That custom view is placed three times in a LinearLayout, so it looks like this:

+------------------------+
|  CustomView            |
+------------------------+
|  CustomView            |
+------------------------+
|  CustomView            |
+------------------------+

我附上一个点击事件监听器查看，所以它是可以点击的。但后来我点击它，我不能看到，我点击了它 - 没有颜色没有变化。

I have attached a click event listener to the View, so it is clickable. But then I click it, I cant see that I am clicking it - there is no change in color.

所以，林认为我会附上一份关于preSS监听器，然后更改视图的背景，但我无法找到这样的监听器。

So, Im thought that I'd attach a "onPress" listener, and then change the background of the view but I couldnt find such a listener.

所以，问题是 - 如何创建视图上的行为，这样我就可以看到它正在pressed？这是在Android的正常完成一个绿色的背景，表示它现在是pressed。

So, the question is - how do I create the behaviour on the View so I can see that it is being pressed? this is normally done in Android with a green background to indicate that it is now being pressed.

问候

推荐答案

您可以设置OnClickListener的观点。该视图被点击时会被调用。但是，对于一些简单的改变背景当一个视图被点击，你应该使用一个有状态的绘制。他们的工作就是这样，你做3 9片图像。

You could set the OnClickListener for the view. That will be called when the view is clicked. But for something as simple as changing the background when a view is clicked you should use a stateful drawable. They work like this, you make 3 9-patch images.

然后，创建你的文件夹绘制一个新的XML文件。它应该是这样的：

Then you create an new xml file in your drawable folder. It should look like this:

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item
    android:state_focused="true"
    android:state_pressed="true"
    android:drawable="@drawable/background_pressed" />
<item
    android:state_focused="true"
    android:state_pressed="false"
    android:drawable="@drawable/background_focused" />
<item
    android:state_focused="false"
    android:state_pressed="true"
    android:drawable="@drawable/background_pressed" />
<item
    android:drawable="@drawable/background_normal" />

然后，当你设置视图的背景设置到XML文件。

Then, when you set the background of your view set it to the xml file.