首先了解一下LayouInflater类：
将一个layout xml文件实例化为相应的View 对象。他永远不会直接使用，而是使用 getLayoutInflater() 或者 getSystemService(String) 来获得标准的LayoutInflater实例，这个实例已经将context连接起来，为正在运行的设备配置正确。
比如：
[java] view plaincopy
LayoutInflater inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
public View inflate (int resource, ViewGroup root)
Since: API Level 1
Inflate a new view hierarchy from the specified xml resource. Throws InflateException if there is an error.
Parameters
resource ID for an XML layout resource to load (e.g., R.layout.main_page)
root Optional view to be the parent of the generated hierarchy.
Returns
The root View of the inflated hierarchy. If root was supplied, this is the root View; otherwise it is the root of the inflated XML file.
假如有一个这样的xml文件(guess_button.xml) 放入到一个buttonTableLayout：
[html] view plaincopy
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<Button
android:id="@+id/newGuessButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1" />
</LinearLayout>
(guess_button.xml)
[html] view plaincopy
<TableLayout
android:id="@+id/buttonTableLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:stretchColumns="0,1,2" >
<TableRow
android:id="@+id/tableRow0"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
</TableRow>
<TableRow
android:id="@+id/tableRow1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
</TableRow>
<TableRow
android:id="@+id/tableRow2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
</TableRow>
</TableLayout>
(main.xml中定义的需要被扩充的buttonTableLayout,假设其在程序中的引用也叫buttonTableLayout, 即buttonTableLayout =(TableLayout) findViewById(R.id.buttonLayout);)
现在我们将其第一行进行扩充：
[java] view plaincopy
LayoutInflater inflater = (LayoutInflater)context.getSystemService (Context.LAYOUT_INFLATER_SERVICE);
Button newGuessButton =(Button)inflater.inflater(R.layout.guess_button,null); //获得按钮
newGuessButton.setText("abc"); //设置按钮文本
newGuessButton.setOnClickListener(guessButtonListener); //设置Listener
(TableRow) buttonTableLayout.getChildAt(1); //将newGuessButton加到table第一行
OK 整个流程就完成了
