PullToRefreshListView 2.0 【ArrayList与LinkedList】

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使用LinkedList。。。。LinkedList.addFirst(“helloworld”);

package com.example.helloworld;import java.util.Arrays;import java.util.LinkedList;import android.app.Activity;import android.os.AsyncTask;import android.os.Bundle;import android.widget.ArrayAdapter;import android.widget.ListView;import com.handmark.pulltorefresh.library.PullToRefreshBase;import com.handmark.pulltorefresh.library.PullToRefreshBase.OnRefreshListener;import com.handmark.pulltorefresh.library.PullToRefreshListView;public class MainActivity extends Activity {     private String[] mStrings = { "123", "1234", "12345"};      private PullToRefreshListView lV;    private ArrayAdapter<String> adapter;    private LinkedList<String> mListItems;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        mListItems = new LinkedList<String>();        mListItems.addAll(Arrays.asList(mStrings));        lV = (PullToRefreshListView) findViewById(R.id.mylv);        adapter = new ArrayAdapter<String>(MainActivity.this, android.R.layout.simple_list_item_1,mListItems);        lV.setAdapter(adapter);        lV.setOnRefreshListener(new OnRefreshListener<ListView>() {            @Override            public void onRefresh(PullToRefreshBase<ListView> refreshView) {                new AsyncTask<Void, Void, Void>() {                    @Override                    protected Void doInBackground(Void... arg0) {                        try {                            Thread.sleep(1000);                        } catch (InterruptedException e) {                            e.printStackTrace();                        }                        return null;                    }                    protected void onPostExecute(Void result) {                        mListItems.addFirst("dajiahao");                        adapter.notifyDataSetChanged();                        lV.onRefreshComplete();                    };                }.execute();            }        });    }}

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使用ArrayList。。。。arrayList.add(0,”helloworld”);

package com.example.helloworld;import java.util.ArrayList;import com.handmark.pulltorefresh.library.PullToRefreshBase;import com.handmark.pulltorefresh.library.PullToRefreshBase.OnRefreshListener;import com.handmark.pulltorefresh.library.PullToRefreshListView;import android.app.Activity;import android.os.AsyncTask;import android.os.Bundle;import android.widget.ArrayAdapter;import android.widget.ListView;public class SecondActivity extends Activity {    private PullToRefreshListView myListView;    private ArrayList<String> arrayList;    private ArrayAdapter<String> adapter;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_second);        arrayList = new ArrayList<String>();        arrayList.add("hello");        arrayList.add("hongye");        myListView = (PullToRefreshListView) findViewById(R.id.myListView);        adapter = new ArrayAdapter<String>(SecondActivity.this,                android.R.layout.simple_list_item_1, arrayList);        myListView.setAdapter(adapter);        myListView.setOnRefreshListener(new OnRefreshListener<ListView>() {            @Override            public void onRefresh(PullToRefreshBase<ListView> refreshView) {                new AsyncTask<Void, Void, Void>() {                    @Override                    protected Void doInBackground(Void... arg0) {                        try {                            Thread.sleep(1000);                        } catch (InterruptedException e) {                            e.printStackTrace();                        }                        return null;                    }                    @Override                    protected void onPostExecute(Void result) {                        arrayList.add(0, "secondActivity");                        adapter.notifyDataSetChanged();                        myListView.onRefreshComplete();                        super.onPostExecute(result);                    }                }.execute();            }        });    }}

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