android 32 Gallery：横着滚动的列表

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<GeneralBean> 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<GeneralBean>();
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
} }
}

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" > <Gallery
android:id="@+id/galleryGeneral"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:spacing="2dp"/></RelativeLayout>

<?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="wrap_content"
android:orientation="vertical" >
<ImageView
android:id="@+id/ivThumb"
android:layout_width="80dp" 上图下字
android:layout_height="80dp"
android:scaleType="fitXY"
android:src="@drawable/baiqi"/>
<TextView
android:id="@+id/tvName"
android:layout_width="80dp"
android:layout_height="wrap_content"
android:text="白起"
android:textSize="20sp"
android:gravity="center_horizontal"/>
</LinearLayout>

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;
}