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ListView 点击加载更多

 主要代码

private void findView() {//初始化控件
        // TODO Auto-generated method stub
        lv_queryHistory = (ListView) findViewById(R.id.lv_pegging_result);
        loadMoreView = LayoutInflater.from(this).inflate(R.layout.load_more,
                null);
        headView = LayoutInflater.from(this).inflate(R.layout.peg_res_head,
                null);

        ll_headline = (LinearLayout) headView.findViewById(R.id.ll_headline);
        ll_headline.setVisibility(View.GONE);
        queDomain = (TextView) headView.findViewById(R.id.tv_query_domain);
        queDate = (TextView) headView.findViewById(R.id.tv_query_date);
        queDomain.setText("查询的域名");
        queDate.setText("查询时间");

        loadMoreButton = (Button) loadMoreView.findViewById(R.id.btn_loading);
        lv_queryHistory.addFooterView(loadMoreView);
        lv_queryHistory.addHeaderView(headView);
        lv_queryHistory.setOnItemClickListener(listItemClick);
    }

    private void initData() {//初始化数据
        lstHistories = ManageHistory.getLimitHistory(count, Global.PAGESIZE);
        if(lstHistories==null){
            if (sumHistory >= ManageHistory.getAllHistory().size()) {
                loadMoreButton.setVisibility(View.GONE);
            }
        }else{
            sumHistory = lstHistories.size();
            peggingResAdapter = new PeggingResultAdapter(this.getApplication(),
                    lstHistories, null);
            lv_queryHistory.setAdapter(peggingResAdapter);
            if (sumHistory >= ManageHistory.getAllHistory().size()) {
                loadMoreButton.setVisibility(View.GONE);
            }
        }
        
        
    }

    public void loadMore(View view) {//单击事件

        dialog.showProgressDialog(QueryHistoryActivity.this, "数据加载中", true);
        loadMoreButton.setText("加载数据中..."); // 设置按钮文字loading
        loadData();
        peggingResAdapter.notifyDataSetChanged(); // 数据集变化后,通知adapter
        // // listView.setSelection(visibleLastIndex - visibleItemCount +
        // // 1); // 设置选中项
        loadMoreButton.setText("点击加载更多"); // 恢复按钮文字
        dialog.dismissProgressDialog();
    }

    /**
     * 
     * 加载更多的数据
     * 
     */
    private void loadData() {//加载数据
        count += 1;

        lstHistories = ManageHistory.getLimitHistory(count * Global.PAGESIZE,
                Global.PAGESIZE);
        sumHistory += lstHistories.size();
        for (int i = 0; i < lstHistories.size(); i++) {
            peggingResAdapter.AddItem(lstHistories.get(i));
        }

        if (sumHistory >= ManageHistory.getAllHistory().size()) {
            loadMoreButton.setVisibility(View.GONE);
            Toast.makeText(getApplicationContext(), "没有更多的数据了",
                    Toast.LENGTH_LONG).show();
        }
    }

 

 

适配器ListView

package cn.ename.cxw.whois.adapter;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;

import android.content.Context;

import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;
import cn.ename.cxw.R;

import cn.ename.cxw.whois.domain.InquireHistory;
import cn.ename.cxw.whois.domain.PostInformations;
import cn.ename.cxw.whois.domain.WhoisData;
import cn.ename.cxw.whois.net.StringUtils;

public class PeggingResultAdapter extends BaseAdapter {
    private Context mContext;
    private TextView domain;
    private TextView resultDate;

    private List<InquireHistory> lstHistory;


    public PeggingResultAdapter(Context mContext) {
        super();
        this.mContext = mContext;
    }

    public PeggingResultAdapter(Context mContext, List<InquireHistory> lstHistory, String histroy) {
        super();
        this.mContext = mContext;
        this.lstHistory = lstHistory;
    }

    

    @Override
    public int getCount() {
        // TODO Auto-generated method stub
        

            return this.lstHistory.size();
    
    
    }

    @Override
    public Object getItem(int position) {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public long getItemId(int position) {
        // TODO Auto-generated method stub
        return 0;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        // TODO Auto-generated method stub

        convertView = LayoutInflater.from(mContext).inflate(R.layout.pegging_result_item, null);
        domain = (TextView) convertView.findViewById(R.id.tv_domain);
        resultDate = (TextView) convertView.findViewById(R.id.tv_reg_date);


            domain.setText(lstHistory.get(position).getDomain());
            
            SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd"); 
              Date date = null;
            try {
                date = new SimpleDateFormat("yyyy-MM-dd").parse(lstHistory.get(position).getSaveTime());
            } catch (ParseException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }  
              String now = new SimpleDateFormat("yyyy-MM-dd").format(date);
            resultDate.setText(now);
    
        return convertView;
    }

    public void AddItem(InquireHistory inquireHistory) {
        this.lstHistory.add(inquireHistory);
        Log.i("SUM", inquireHistory.toString());
    }


}

peg_res_head.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="@color/white"
    android:orientation="vertical" >

    <LinearLayout
        android:id="@+id/ll_headline"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_margin="10dp"
        android:orientation="horizontal" >

        <TextView
            android:id="@+id/tv_hl_domain"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="baidu.com"
            android:textSize="15sp"
            android:textColor="@color/black" />
    </LinearLayout>

    <LinearLayout
        android:id="@+id/ll_query_result"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:background="@drawable/gray_nav"
        android:orientation="horizontal"
        android:padding="10dp" >

        <TextView
            android:id="@+id/tv_query_domain"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_weight="3"
            android:paddingRight="10dp"
            android:singleLine="true"
            android:text="域名"
            android:ellipsize="end"
            android:textSize="15sp"
            android:textColor="@color/black" />

        <TextView
            android:id="@+id/tv_query_date"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_weight="5"
            android:text="注册时间"
            android:textSize="15sp"
            android:textColor="@color/black" />
    </LinearLayout>
</LinearLayout>

load_more.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <Button 
        android:id="@+id/btn_loading"
        android:layout_width="fill_parent"
        android:layout_height="50dp"
        android:text="点击加载更多"
        android:onClick="loadMore"
        android:background="@color/transparent"
        />

</LinearLayout>


效果图

posted on 2013-07-02 13:48  啊塔  阅读(1419)  评论(0编辑  收藏  举报