<?xml version="1.0" encoding="utf-8" ?>
<GridLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:rowCount="6"
android:columnCount="4"
android:id="@+id/root"
>
<!-- 定义一个横跨4列的文本框，
并设置该文本框的前景色、背景色等属性 -->
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_columnSpan="4"
android:textSize="50sp"
android:layout_marginLeft="4px"
android:layout_marginRight="4px"
android:padding="5px"
android:layout_gravity="right"
android:background="#eee"
android:textColor="#000"
android:text="0"/>
<!-- 定义一个横跨4列的按钮 -->
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_columnSpan="4"
android:text="清除"/>
</GridLayout>

后台代码

public class GridLayoutTest extends Activity
{
GridLayout gridLayout;
// 定义16个按钮的文本
String[] chars = new String[]
{
"7" , "8" , "9" , "÷",
"4" , "5" , "6" , "×",
"1" , "2" , "3" , "-",
"." , "0" , "=" , "+"
};
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
gridLayout = (GridLayout) findViewById(R.id.root);

for(int i = 0 ; i < chars.length ; i++)
{
Button bn = new Button(this);
bn.setText(chars[i]);
// 设置该按钮的字体大小
bn.setTextSize(68);
// 指定该组件所在的行
GridLayout.Spec rowSpec = GridLayout.spec(i / 4 + 2);
// 指定该组件所在列
GridLayout.Spec columnSpec = GridLayout.spec(i % 4);
GridLayout.LayoutParams params = new GridLayout.LayoutParams(
rowSpec , columnSpec);
// 指定该组件占满父容器
params.setGravity(Gravity.FILL);
gridLayout.addView(bn , params);
}
}
}

网格布局--计算器界面