GridView 二维排布

与ListView一维排布相对

public class MainActivity extends Activity implements AdapterView.OnItemClickListener{

    private GridView gv;

    private int[] icon = {

            R.drawable.address_book,R.drawable.calendar,R.drawable.camera,

            R.drawable.clock,R.drawable.games_control,R.drawable.messenger,

            R.drawable.ringtone,R.drawable.settings,R.drawable.youtube

    };

    private String[] name = {

            "address_book" , "calendar" , "camera" ,

            "clock" ,"games_control", "messenger" ,

            "ringtone" , "settings" ,"youtube"

    };

    private List<Map<String,Object>> listdata;

    private SimpleAdapter sim_adapter;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        //注册控件

        gv = (GridView)findViewById(R.id.gridView);

        //数据源

        listdata = new ArrayList<Map<String,Object>>();

        //适配器

        sim_adapter = new SimpleAdapter(this,getData(),R.layout.buju,new String[]{"pic", "txt"},new int[]{R.id.pic,R.id.txt});

        //GridView与适配器绑定

        gv.setAdapter(sim_adapter);

        gv.setOnItemClickListener(this);

    }

    private  List<Map<String,Object>> getData(){

        for(int i = 0 ; i < icon.length ; i++){

            Map<String,Object> map = new HashMap<String, Object>();

            map.put("pic",icon[i]);

            map.put("txt",name[i]);

            listdata.add(map);

        }

        return listdata;

    }

    @Override

    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

        Toast.makeText(this,"这里是："+ name[position],Toast.LENGTH_SHORT).show();

    }

　　

gridview 三个常用的属性
numcolumns :每一行显示多少列 列数 可以自动适配 auto_fit
horizontalspacing 两列之间的间距 其实翻译过来就是水平之间的距离 就是两列之间的距离
verticalspacing 行距 垂直之间的距离

    android:numColumns="3"              分为3列

    android:horizontalSpacing="10dp"    每列间距10dp

    android:verticalSpacing="10dp"      每行间距10dp

    <GridView

        android:layout_marginTop="10dp"

        android:numColumns="3"

        android:horizontalSpacing="10dp"

        android:verticalSpacing="10dp"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:id="@+id/gridView" />

GridView监听事件 OnItemClickListener