Gallery：横着滚动的列表

 mainActivity.java

package com.sxt.day05_01;import java.util.ArrayList;import java.util.List;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.view.ViewGroup;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.AdapterView.OnItemLongClickListener;import android.widget.BaseAdapter;import android.widget.Gallery;import android.widget.GridView;import android.widget.ImageView;import android.widget.ListView;import android.widget.TextView;import android.widget.Toast;import com.sxt.day05_01.entity.GeneralBean;public class MainActivity extends Activity {    Gallery mGallery;    List
     
       mGenerals;//代表十个军事家的集合    GeneralAdapter mAdapter;    int[] resid={        R.drawable.baiqi,R.drawable.caocao,R.drawable.chengjisihan,        R.drawable.hanxin,R.drawable.lishimin,R.drawable.nuerhachi,        R.drawable.sunbin,R.drawable.sunwu,R.drawable.yuefei,        R.drawable.zhuyuanzhang    };    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        initData();//初始化数据        initView();        setListener();    }        private void setListener() {        setOnItemClickListener();        setOnItemLongClickListener();            }    private void setOnItemLongClickListener() {        mGallery.setOnItemLongClickListener(new OnItemLongClickListener() {            @Override            public boolean onItemLongClick(AdapterView
       parent, View view,                    int position, long id) {                Toast.makeText(MainActivity.this, mGenerals.get(position).getName()+"被长按", 2000).show();                return true;            }        });    }    private void setOnItemClickListener() {        mGallery.setOnItemClickListener(new OnItemClickListener() {            @Override            public void onItemClick(AdapterView
       parent, View view,                    int position, long id) {                Toast.makeText(MainActivity.this, mGenerals.get(position).getName()+"被短按", 2000).show();            }        });    }    private void initView() {        mGallery=(Gallery) findViewById(R.id.galleryGeneral);        mAdapter=new GeneralAdapter();//创建适配器        mGallery.setAdapter(mAdapter);//关联适配器    }    private void initData() {        //将资源中的字符串组数转换为Java数组        String[] names=getResources().getStringArray(R.array.generals);        mGenerals=new ArrayList
      
       ();        for (int i = 0; i < names.length; i++) {            GeneralBean bean=new GeneralBean(resid[i], names[i]);            mGenerals.add(bean);        }    }    //适配器    class GeneralAdapter extends BaseAdapter{        @Override        public int getCount() {            return Integer.MAX_VALUE;//设置Gallery的长度为21亿，使得水平滚动的列表到最后的时候又从第一个开始        }        @Override        public GeneralBean getItem(int position) {            return mGenerals.get(position);        }        @Override        public long getItemId(int position) {            return position;        }        @Override        //滚动的时候显示Gallery中第position位置的单个布局，position从0到21亿，使得水平滚动的列表到最后的时候又从第一个开始        public View getView(int position, View convertView, ViewGroup parent) {            //拿到ListViewItem的布局，转换为View类型的对象            View layout=View.inflate(MainActivity.this, R.layout.item_generals, null);            ImageView ivThumb=(ImageView) layout.findViewById(R.id.ivThumb);            TextView tvName=(TextView) layout.findViewById(R.id.tvName);                        //position%mGenerals.size()使得水平滚动的列表到最后的时候又从第一个开始            GeneralBean bean=mGenerals.get(position%mGenerals.size());            ivThumb.setImageResource(bean.getResid());            tvName.setText(bean.getName());            return layout;//返回第position位置的单个布局，也就是item_generals.xml的LinearLayout        }            }}
      
     

main.xml

item_generals.xml

GeneralBean.java

public class GeneralBean {    private int resid;//图片的id值    private String name;//军事家的姓名    public int getResid() {        return resid;    }