Android利用ViewPager+GridView实现首页导航栏布局分页效果

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package com.item.jiejie.adapter;

import java.util.List;

import com.item.jiejie.ProdctBean;
import com.item.jiejie.R;
import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

/**
 * GridView加载数据的适配器
 * @author Administrator
 *
 */
public class MyGridViewAdpter extends BaseAdapter{
  
  private Context context;
  private List lists;//数据源
  private int mIndex; // 页数下标，标示第几页，从0开始
  private int mPargerSize;// 每页显示的最大的数量
  
  
  
  public MyGridViewAdpter(Context context, List lists,
      int mIndex, int mPargerSize) {
    this.cOntext= context;
    this.lists = lists;
    this.mIndex = mIndex;
    this.mPargerSize = mPargerSize;
  }

  /**
   * 先判断数据及的大小是否显示满本页lists.size() > (mIndex + 1)*mPagerSize
   * 如果满足，则此页就显示最大数量lists的个数
   * 如果不够显示每页的最大数量，那么剩下几个就显示几个
   */
  @Override
  public int getCount() {
    // TODO Auto-generated method stub
    return lists.size() > (mIndex + 1) * mPargerSize &＃63; 
        mPargerSize : (lists.size() - mIndex*mPargerSize);
  }

  @Override
  public ProdctBean getItem(int arg0) {
    // TODO Auto-generated method stub
    return lists.get(arg0 + mIndex * mPargerSize);
  }

  @Override
  public long getItemId(int arg0) {
    // TODO Auto-generated method stub
    return arg0 + mIndex * mPargerSize;
  }

  @Override
  public View getView(int position, View convertView, ViewGroup parent) {
    // TODO Auto-generated method stub
    ViewHolder holder = null;
    if(cOnvertView== null){
      holder = new ViewHolder();
      cOnvertView= View.inflate(context, R.layout.item_view, null);
      holder.tv_name = (TextView)convertView.findViewById(R.id.item_name);
      holder.iv_nul = (ImageView)convertView.findViewById(R.id.item_image);
      convertView.setTag(holder);
    }else {
      holder = (ViewHolder)convertView.getTag();
    }
    //重新确定position因为拿到的总是数据源，数据源是分页加载到每页的GridView上的
    final int pos = position + mIndex * mPargerSize;//假设mPageSiez
    //假设mPagerSize=8，假如点击的是第二页（即mIndex=1）上的第二个位置item(position=1),那么这个item的实际位置就是pos=9
    holder.tv_name.setText(lists.get(pos).getName() + "");
    holder.iv_nul.setImageResource(lists.get(pos).getUrl());
    //添加item监听
//    convertView.setOnClickListener(new View.OnClickListener() {
//      
//      @Override
//      public void onClick(View arg0) {
//        // TODO Auto-generated method stub
//        Toast.makeText(context, "您点击了" + lists.get(pos).getName(), Toast.LENGTH_SHORT).show();
//      }
//    });
    return convertView;
  }
  static class ViewHolder{
    private TextView tv_name;
    private ImageView iv_nul;
  }
}

package com.item.jiejie;

import java.util.ArrayList;
import java.util.List;
import com.item.jiejie.adapter.MyGridViewAdpter;
import com.item.jiejie.adapter.MyViewPagerAdapter;
import android.app.Activity;
import android.os.Bundle;
import android.support.v4.view.ViewPager;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.Toast;

/**
 * 实现仿美团首页导航栏布局分页效果 
 * @author Administrator
 *
 */
public class MyActivity extends Activity {
  private ViewPager viewPager;
  private LinearLayout group;//圆点指示器
  private ImageView[] ivPoints;//小圆点图片的集合
  private int totalPage; //总的页数
  private int mPageSize = 8; //每页显示的最大的数量
  private List listDatas;//总的数据源
  private List viewPagerList;//GridView作为一个View对象添加到ViewPager集合中
  //private int currentPage;//当前页
  
  private String[] prOname= {"名称0","名称1","名称2","名称3","名称4","名称5",
      "名称6","名称7","名称8","名称9","名称10","名称11","名称12","名称13",
      "名称14","名称15","名称16","名称17","名称18","名称19"};
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_my);
    //初始化控件
    initView();
    //添加业务逻辑
    initData();
  }
  
  private void initView() {
    // TODO Auto-generated method stub
    viewPager = (ViewPager)findViewById(R.id.viewpager);
    group = (LinearLayout)findViewById(R.id.points);
    listDatas = new ArrayList();
    for(int i =0 ; i ();
    for(int i = 0; i  arg0, View arg1,
            int position, long arg3) {
          // TODO Auto-generated method stub
          Object obj = gridView.getItemAtPosition(position);
          if(obj != null && obj instanceof ProdctBean){
            System.out.println(obj);
            Toast.makeText(MyActivity.this, ((ProdctBean)obj).getName(), Toast.LENGTH_SHORT).show();
          }
        }
      });
      //每一个GridView作为一个View对象添加到ViewPager集合中      
      viewPagerList.add(gridView);
    }
    //设置ViewPager适配器
    viewPager.setAdapter(new MyViewPagerAdapter(viewPagerList));
    
    //添加小圆点
    ivPoints = new ImageView[totalPage];
    for(int i = 0; i 

package com.item.jiejie.adapter;

import java.util.List;

import android.support.v4.view.PagerAdapter;
import android.view.View;
import android.view.ViewGroup;

/**
 * ViewPage的适配器
 * @author Administrator
 *
 */
public class MyViewPagerAdapter extends PagerAdapter{
  
  private List viewList;//View就二十GridView
  
  
  public MyViewPagerAdapter(List viewList) {
    this.viewList = viewList;
  }

  @Override
  public int getCount() {
    // TODO Auto-generated method stub
    return viewList!=null &＃63; viewList.size() : 0;
  }

  @Override
  public boolean isViewFromObject(View arg0, Object arg1) {
    // TODO Auto-generated method stub
    return arg0 == arg1;
  }
  /**
   * 将当前的View添加到ViewGroup容器中
   * 这个方法，return一个对象，这个对象表明了PagerAdapter适配器选择哪个对象放在当前的ViewPage上
   */
  @Override
  public Object instantiateItem(ViewGroup container, int position) {
    // TODO Auto-generated method stub
    container.addView(viewList.get(position));
    return viewList.get(position);
  }
  
  @Override
  public void destroyItem(ViewGroup container, int position, Object object) {
    // TODO Auto-generated method stub
     container.removeView((View) object);
  }
}