安卓：按钮状态改变事件

问题描述：

按钮（如背景，文字颜色等），一些XML属性可以用颜色或绘制状态列表像这样定义的：

Some XML attributes of buttons (such as background, textColor, etc) can be defined with color or drawable state List like this:

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="true"
          android:color="#ffff0000"/> 
    <item android:state_focused="true"
          android:color="#ff0000ff"/> 
    <item android:state_enabled="true"
          android:color="#ff00ffff"/> 
    <item android:color="#ff000000"/> 
</selector>

在视图状态更改（pressed / UN pressed为例），相应的颜色会自动改变。

When view state changes (pressed/unpressed, for example), corresponding color is changed automatically.

我怎么能prograqmmatically处理某种stateChangedEvent来执行更复杂的布局改变，不仅仅是改变颜色（例如，更改字体大小或设置其他文本）？

How can I prograqmmatically handle some kind of stateChangedEvent to perform more complicated layout change, than just changing a color (for example, change font size or set another text)?

答

有关焦点更改和触摸事件，你可以通过setOnFocusChangeListener和setOnTouchListener注册监听器。而关于禁用/启用状态的变化，你可以改变你的按钮状态后直接执行。

For focus changes and touch events you can register listeners by setOnFocusChangeListener and setOnTouchListener. And changes about disabled/enabled states you can perform directly after changing your button state.

安卓：按钮状态改变事件

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