Android---GridView使用

1.MainActiivty.java

public class MainActivity extends Activity {

    private GridView mGridView;
    private MyGridViewAdapter mAdapter;
    private ArrayList<String> strDrinks;
    private ArrayList<Integer> imgId;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        initData();
        initViews();
    }

    private void initData() {
        imgId = new ArrayList<>();
        imgId.add(R.drawable.ic_launcher);
        imgId.add(R.drawable.ic_launcher);
        imgId.add(R.drawable.ic_launcher);
        imgId.add(R.drawable.ic_launcher);
        imgId.add(R.drawable.ic_launcher);
        imgId.add(R.drawable.ic_launcher);
        imgId.add(R.drawable.ic_launcher);
        imgId.add(R.drawable.ic_launcher);
        imgId.add(R.drawable.ic_launcher);
        imgId.add(R.drawable.ic_launcher);
        imgId.add(R.drawable.ic_launcher);
        imgId.add(R.drawable.ic_launcher);

        strDrinks = new ArrayList<>();
        strDrinks.add("卡布奇若");
        strDrinks.add("咖啡奶茶");
        strDrinks.add("黑乌龙");
        strDrinks.add("红茶");
        strDrinks.add("拿铁咖啡");
        strDrinks.add("奶茶");
        strDrinks.add("卡布奇若");
        strDrinks.add("咖啡奶茶");
        strDrinks.add("黑乌龙");
        strDrinks.add("红茶");
        strDrinks.add("拿铁咖啡");
        strDrinks.add("奶茶");
    }

    private void initViews() {
        mGridView = (GridView) findViewById(R.id.gridview);
        mAdapter = new MyGridViewAdapter(this, strDrinks, imgId);
        mGridView.setAdapter(mAdapter);
        mGridView.setOnItemClickListener(new OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
                    long arg3) {
                Toast.makeText(MainActivity.this, strDrinks.get(arg2),
                        Toast.LENGTH_SHORT).show();
            }
        });
    }

}

2.适配器MyGridViewAdapter.java

public class MyGridViewAdapter extends BaseAdapter {

    private Context mContext;
    private ArrayList<Integer> imgId;
    private ArrayList<String> strDrinks;

    public MyGridViewAdapter(Context pContext, ArrayList<String> strDrinks,
            ArrayList<Integer> imgId) {
        this.mContext = pContext;
        this.imgId = imgId;
        this.strDrinks = strDrinks;
    }

    @Override
    public int getCount() {
        return strDrinks.size();
    }

    @Override
    public Object getItem(int position) {
        return strDrinks.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {

        ViewHolder viewHolder = null;
        if (null == convertView) {
            viewHolder = new ViewHolder();
            LayoutInflater mInflater = LayoutInflater.from(mContext);
            convertView = mInflater.inflate(R.layout.gridview_item, null);

            viewHolder.grid_img_item = (ImageView) convertView
                    .findViewById(R.id.grid_img_item);
            viewHolder.grid_tv_item = (TextView) convertView
                    .findViewById(R.id.grid_tv_item);

            convertView.setTag(viewHolder);
        } else {
            viewHolder = (ViewHolder) convertView.getTag();
        }

        viewHolder.grid_tv_item.setText(strDrinks.get(position));
        viewHolder.grid_img_item.setImageResource(imgId.get(position));
        return convertView;
    }

    private static class ViewHolder {
        ImageView grid_img_item;
        TextView grid_tv_item;
    }

}

3.activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="10dp"
    tools:context="com.example.gridviewtest.MainActivity" >

    <GridView
        android:id="@+id/gridview"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:horizontalSpacing="10dp"
        android:verticalSpacing="10dp"
        android:numColumns="auto_fit"
        />

</RelativeLayout>

4.gridview_item.xml

<?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:gravity="center"
    android:padding="10dp"
    android:background="@drawable/border"
    android:orientation="vertical" >
    <ImageView
        android:id="@+id/grid_img_item"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="5dp"
        />
    <TextView 
        android:id="@+id/grid_tv_item"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="卡布奇若"
        android:textSize="16sp"
        android:textColor="#000"
        />

</LinearLayout>

效果：

源码下载