Android 下拉重新整理控制項 SwipeRefreshLayout

上個月，google發布了自己的下拉重新整理控制項------SwipeRefreshLayout，該控制項封裝在android-support-v4.jar包中，依靠監聽OnRefreshListener實現重新整理操作。該控制項用法十分簡單，setEnable()方法控制重新整理是否可用，setRefreshing()方法控制重新整理進度條動畫是否可用，由於是要實現下拉重新整理，官方文檔明確指出該控制項所含有的一個直接子View必須是能夠滾動的，如ListView、ScrollView等等。

要使用該控制項，需要現在布局檔案定義SwipeRefreshLayout控制項，布局檔案如下：

listView 的item布局檔案：

主activity代碼如下：

package com.example.android_test_swiperefreshlayout;import java.util.ArrayList;import android.os.Bundle;import android.os.Handler;import android.R.integer;import android.app.Activity;import android.support.v4.widget.SwipeRefreshLayout;import android.support.v4.widget.SwipeRefreshLayout.OnRefreshListener;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.ListView;import android.widget.TextView;import android.widget.Toast;public class MainActivity extends Activity implements OnRefreshListener{    private SwipeRefreshLayout swipeLayout;    private ListView listView;    private ArrayList list;    private MyAdapter adapter;    private int count = 0;    @Override    protected void onCreate(Bundle savedInstanceState)    {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);initData();swipeLayout = (SwipeRefreshLayout) findViewById(R.id.swipe);swipeLayout.setColorScheme(android.R.color.holo_blue_bright,android.R.color.holo_green_light, android.R.color.holo_orange_light,android.R.color.holo_red_light);listView = (ListView) findViewById(R.id.list);adapter = new MyAdapter();listView.setAdapter(adapter);swipeLayout.setOnRefreshListener(this);    }    public void initData()    {list = new ArrayList();for (int i = 0; i < 24; i++){    list.add("北京" + i);}count = 24;    }    class MyAdapter extends BaseAdapter    {@Overridepublic int getCount(){    // TODO Auto-generated method stub    return list.size();}@Overridepublic Object getItem(int position){    // TODO Auto-generated method stub    return list.get(position);}@Overridepublic long getItemId(int position){    // TODO Auto-generated method stub    return position;}@Overridepublic View getView(int position, View convertView, ViewGroup parent){    // TODO Auto-generated method stub    if (convertView == null)    {convertView = LayoutInflater.from(getApplicationContext()).inflate(R.layout.item,null);    }    TextView textView = (TextView) convertView.findViewById(R.id.textView1);    textView.setText(list.get(position));    return convertView;}    }    @Override    public void onRefresh()    {// TODO Auto-generated method stubnew Handler().postDelayed(new Runnable(){        @Override    public void run()    {// TODO Auto-generated method stubswipeLayout.setRefreshing(true);list.add("新增北京"+count);count++;adapter.notifyDataSetChanged();    }}, 3000);    }}

Demo：點擊開啟連結