最近我嘗試使用ViewPager+GridView實現的，看起來一切正常，廢話不多說，具體代碼如下：
如圖是效果圖
首先分析下思路
1.首先是怎么布局：整體是一個ViewPager將GridView作為一個View添加到ViewPager的adapter中，下方是圓點
<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:background="#CDCDCD" > <RelativeLayout android:layout_width="match_parent" android:layout_height="200dp" android:background="#fff" > <android.support.v4.view.ViewPager android:id="@+id/viewpager" android:layout_width="match_parent" android:layout_height="wrap_content" /> <LinearLayout android:id="@+id/points" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:layout_marginBottom="10dp" android:gravity="center" android:orientation="horizontal" /> </RelativeLayout></RelativeLayout>
2.接下來時作為ViewPager的item布局文件GridView，（如果最外層是RelativeLayout或線型布局等，會轉換異常）
<?xml version="1.0" encoding="utf-8"?><GridView xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/gridView" android:layout_width="match_parent" android:layout_height="wrap_content" android:numColumns="4"></GridView>
3.是GridView適配器的編寫，主要是注意數量如果一共有all=10條數據，每頁最多max=8條的話，第一個頁面就是個數是max=8，第二個就2個all-max
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加載數據的適配器 * @author Administrator * */public class MyGridViewAdpter extends BaseAdapter{ private Context context; private List<ProdctBean> lists;//數據源 private int mIndex; // 頁數下標，標示第幾頁，從0開始 private int mPargerSize;// 每頁顯示的最大的數量 public MyGridViewAdpter(Context context, List<ProdctBean> lists, int mIndex, int mPargerSize) { this.context = context; this.lists = lists; this.mIndex = mIndex; this.mPargerSize = mPargerSize; } /** * 先判斷數據及的大小是否顯示滿本頁lists.size() > (mIndex + 1)*mPagerSize * 如果滿足，則此頁就顯示最大數量lists的個數 * 如果不夠顯示每頁的最大數量，那么剩下幾個就顯示幾個 */ @Override public int getCount() { // TODO Auto-generated method stub return lists.size() > (mIndex + 1) * mPargerSize ? 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(); } //重新確定position因為拿到的總是數據源，數據源是分頁加載到每頁的GridView上的 final int pos = position + mIndex * mPargerSize;//假設mPageSiez //假設mPagerSize=8，假如點擊的是第二頁（即mIndex=1）上的第二個位置item(position=1),那么這個item的實際位置就是pos=9 holder.tv_name.setText(lists.get(pos).getName() + ""); holder.iv_nul.setImageResource(lists.get(pos).getUrl()); //添加item監聽// convertView.setOnClickListener(new View.OnClickListener() {// // @Override// public void onClick(View arg0) {// // TODO Auto-generated method stub// Toast.makeText(context, "您點擊了" + lists.get(pos).getName(), Toast.LENGTH_SHORT).show();// }// }); return convertView; } static class ViewHolder{ private TextView tv_name; private ImageView iv_nul; }}4.GridView的點擊事件這里提供2種方法一種是在適配器用布局的點擊事件來處理；第二種是Object obj = gridView.getItemAtPosition(position);來處理。
5.主程序將GridView作為View添加到ViewPager中 代碼如下
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;/** * 實現仿美團首頁導航欄布局分頁效果 * @author Administrator * */public class MyActivity extends Activity { private ViewPager viewPager; private LinearLayout group;//圓點指示器 private ImageView[] ivPoints;//小圓點圖片的集合 private int totalPage; //總的頁數 private int mPageSize = 8; //每頁顯示的最大的數量 private List<ProdctBean> listDatas;//總的數據源 private List<View> viewPagerList;//GridView作為一個View對象添加到ViewPager集合中 //private int currentPage;//當前頁 private String[] proName = {"名稱0","名稱1","名稱2","名稱3","名稱4","名稱5", "名稱6","名稱7","名稱8","名稱9","名稱10","名稱11","名稱12","名稱13", "名稱14","名稱15","名稱16","名稱17","名稱18","名稱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(); //添加業務邏輯 initData(); } private void initView() { // TODO Auto-generated method stub viewPager = (ViewPager)findViewById(R.id.viewpager); group = (LinearLayout)findViewById(R.id.points); listDatas = new ArrayList<ProdctBean>(); for(int i =0 ; i < proName.length; i++){ listDatas.add(new ProdctBean(proName[i], R.drawable.iv_driving)); } } private void initData() { // TODO Auto-generated method stub //總的頁數向上取整 totalPage = (int) Math.ceil(listDatas.size() * 1.0 / mPageSize); viewPagerList = new ArrayList<View>(); for(int i = 0; i < totalPage; i++){ //每個頁面都是inflate出一個新實例 final GridView gridView = (GridView)View.inflate(this, R.layout.item_gridview, null); gridView.setAdapter(new MyGridViewAdpter(this, listDatas, i, mPageSize)); //添加item點擊監聽 gridView.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> 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(); } } }); //每一個GridView作為一個View對象添加到ViewPager集合中 viewPagerList.add(gridView); } //設置ViewPager適配器 viewPager.setAdapter(new MyViewPagerAdapter(viewPagerList)); //添加小圓點 ivPoints = new ImageView[totalPage]; for(int i = 0; i < totalPage; i++){ //循壞加入點點圖片組 ivPoints[i] = new ImageView(this); if(i==0){ ivPoints[i].setImageResource(R.drawable.page_focuese); }else { ivPoints[i].setImageResource(R.drawable.page_unfocused); } ivPoints[i].setPadding(8, 8, 8, 8); group.addView(ivPoints[i]); } //設置ViewPager的滑動監聽，主要是設置點點的背景顏色的改變 viewPager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener(){ @Override public void onPageSelected(int position) { // TODO Auto-generated method stub //currentPage = position; for(int i=0 ; i < totalPage; i++){ if(i == position){ ivPoints[i].setImageResource(R.drawable.page_focuese); }else { ivPoints[i].setImageResource(R.drawable.page_unfocused); } } } }); }}6.ViewPage的適配器代碼
package com.item.jiejie.adapter;import java.util.List;import android.support.v4.view.PagerAdapter;import android.view.View;import android.view.ViewGroup;/** * ViewPage的適配器 * @author Administrator * */public class MyViewPagerAdapter extends PagerAdapter{ private List<View> viewList;//View就二十GridView public MyViewPagerAdapter(List<View> viewList) { this.viewList = viewList; } @Override public int getCount() { // TODO Auto-generated method stub return viewList!=null ? viewList.size() : 0; } @Override public boolean isViewFromObject(View arg0, Object arg1) { // TODO Auto-generated method stub return arg0 == arg1; } /** * 將當前的View添加到ViewGroup容器中 * 這個方法，return一個對象，這個對象表明了PagerAdapter適配器選擇哪個對象放在當前的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); }}以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持武林網。
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