由网友(全力以赴)分享简介：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 li...

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)?

推荐答案

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.