Android 列表使用(ListView GridView Gallery图片计时滚动)

ListView

public class ActivityListView extends Activity {
private ListView mListView;
protected void onCreate(android.os.Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//加载listview控件所在的布局文件
setContentView(R.layout.listview_layout);
//获取listview控件的对象
mListView = (ListView)findViewById(R.id.listview);
/**
*定义SimpleAdapter（并加载对应item布局文件，获得对应的keY,获得对应item布局文件中的组件的id
*第二个参数data：数据源第三个参数resource：listView每个item对应的布局文件第四个参数 from：
*第五个参数to： new String[]{对应的key}v
*/
SimpleAdapter simpleAdapter =new SimpleAdapter(this, get_data(),
R.layout.item_listview,new String[]{"name","img" },
newint[] { R.id.txtname, R.id.img });
//通过setAdapter将适配器绑定到listView控件
mListView.setAdapter(simpleAdapter);
};
/**
*数据源
*/
String[] name = { "张三","李四","小星星","静静","明明","小翠" };
private ArrayList<Map<String, Object>> get_data() {
//定义一个ArrayList的集合（集合中又封装一个map类型的集合）
ArrayList<Map<String, Object>> data_list =new ArrayList<Map<String,Object>>();
for (int i = 0; i<name.length; i++) {
// key,valueintstring map不能new map
Map<String, Object> data_map =new HashMap<String, Object>();
data_map.put("name",name[i]);
data_map.put("img",R.drawable.a1);
//将map集合添加（封装）到ArrayList集合中
data_list.add(data_map);
}
//返回ArrayList集合
return data_list;
}
}

public class ActivityGrelly extends Activity {
/** Called when the activity isfirst created. */
private int index;
private Gallery g;
private Handler handler;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.gallery_layout);
initView();
}

private void initView() {
// TODOAuto-generated method stub
// 获得Gallery对象
g = (Gallery)findViewById(R.id.gallery);

// 添加ImageAdapter给Gallery对象
g.setAdapter(newImageAdapter(this));

// 设置Gallery的背景
g.setBackgroundResource(R.drawable.bg);

TimerTask task = new TimerTask() {

@Override
public void run() {
Message message = new Message();
message.what = 2;
index = g.getSelectedItemPosition();
index++;
handler.sendMessage(message);
}
};
Timer timer = new Timer();
timer.schedule(task, 3000, 3000);
handler = new Handler(){

@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
switch (msg.what) {
case 2:
g.setSelection(index);
break;

default:
break;
}
}

};

// 设置Gallery的事件监听
g.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View v,
int position,long id) {
Toast.makeText(ActivityGrelly.this,
"你选择了" + (position + 1) +"号图片", Toast.LENGTH_SHORT)
.show();
}
});
}
}