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ViewPager+GridView实现横向滑动 仿大众点评
先看演示效果：
1 ViewPager类提供了多界面切换的新效果。
新效果有如下特征：
[1] 当前显示一组界面中的其中一个界面。
[2] 当用户通过左右滑动界面时，当前的屏幕显示当前界面和下一个界面的一部分。
[3]滑动结束后，界面自动跳转到当前选择的界面中
2 介绍里面几个比较重要的方法与接口
1,OnPageChangeListener ViewPager页面进行切换监听接口 其中我们经常要实现public void onPageSelected(int arg0)，public void onPageScrolled(int arg0, float arg1, int arg2),public void onPageScrollStateChanged(int arg0)着三个方面，其中第一个方法是更多的用到;
2,setCurrentItem(int item),来设置跳转到当前的页面;
3,要显示ViewPager,当然还少不了PagerAdapter类，进行适配;其中我们经常也要实现以下方法才可以:public void destroyItem(View arg0, int arg1, Object arg2),public int getCount(),public Object instantiateItem(View arg0, int arg1),public boolean isViewFromObject(View arg0, Object arg1),具体的使用方法等会看例子就ok了
3 例子代码
java代码
package mm.shandong.com.testviewpagergrid;import android.content.res.TypedArray;import android.support.v4.view.PagerAdapter;import android.support.v4.view.ViewPager;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.GridView;import android.widget.ImageView;import android.widget.RadioButton;import android.widget.RadioGroup;import android.widget.TextView;import android.widget.Toast;import java.util.ArrayList;import java.util.List;import mm.shandong.com.testviewpagergrid.entity.Catogray;public class TestViewpagerGridActivity extends AppCompatActivity { ViewPager viewPagerHomeFragment; List<Catogray> catogarys; String[] catogary_names; int[] catogary_resourceIds; LayoutInflater layoutInflater; List<View> gridViews; RadioGroup radioGroup_index_fragment; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_test_viewpager_grid); catogary_names = getResources().getStringArray(R.array.catogary_names); TypedArray typedArray = getResources().obtainTypedArray(R.array.catogary_resourceIds); catogary_resourceIds = new int[typedArray.length()]; for (int i = 0; i < typedArray.length(); i++) { catogary_resourceIds[i] = typedArray.getResourceId(i, 0); } catogarys = new ArrayList<Catogray>(); viewPagerHomeFragment = (ViewPager) findViewById(R.id.viewPagerHomeFragment); layoutInflater = getLayoutInflater(); radioGroup_index_fragment = (RadioGroup) findViewById(R.id.radioGroup_index_fragment); for (int i = 0; i < catogary_names.length; i++) { Catogray catogary = new Catogray(); catogary.setName(catogary_names[i]); catogary.setImage_source(catogary_resourceIds[i]); catogarys.add(catogary); } initViewPager(); } public void initViewPager() { gridViews = new ArrayList<View>(); ///定义第一个GridView GridView gridView1 = (GridView) layoutInflater.inflate(R.layout.grid_fragment_home, null); MyGridViewAdapter myGridViewAdapter1 = new MyGridViewAdapter(0, 8); gridView1.setAdapter(myGridViewAdapter1); ///定义第二个GridView GridView gridView2 = (GridView) layoutInflater.inflate(R.layout.grid_fragment_home, null); MyGridViewAdapter myGridViewAdapter2 = new MyGridViewAdapter(1, 8); gridView2.setAdapter(myGridViewAdapter2); ///定义第三个GridView GridView gridView3 = (GridView) layoutInflater.inflate(R.layout.grid_fragment_home, null); MyGridViewAdapter myGridViewAdapter3 = new MyGridViewAdapter(2, 8); gridView3.setAdapter(myGridViewAdapter3); gridViews.add(gridView1); gridViews.add(gridView2); gridViews.add(gridView3); ///定义viewpager的PagerAdapter viewPagerHomeFragment.setAdapter(new PagerAdapter() { @Override public boolean isViewFromObject(View arg0, Object arg1) { // TODO Auto-generated method stub return arg0 == arg1; } @Override public int getCount() { // TODO Auto-generated method stub return gridViews.size(); } @Override public void destroyItem(ViewGroup container, int position, Object object) { // TODO Auto-generated method stub container.removeView(gridViews.get(position)); //super.destroyItem(container, position, object); } @Override public Object instantiateItem(ViewGroup container, int position) { // TODO Auto-generated method stub container.addView(gridViews.get(position)); return gridViews.get(position); } }); ///注册viewPager页选择变化时的响应事件 viewPagerHomeFragment.setOnPageChangeListener(new ViewPager.OnPageChangeListener() { @Override public void onPageScrollStateChanged(int position) { // TODO Auto-generated method stub } @Override public void onPageScrolled(int arg0, float arg1, int arg2) { // TODO Auto-generated method stub } @Override public void onPageSelected(int position) { // TODO Auto-generated method stub RadioButton radioButton = (RadioButton) radioGroup_index_fragment.getChildAt(position); radioButton.setChecked(true); } }); } ///定影GridView的Adapter public class MyGridViewAdapter extends BaseAdapter { private int page; private int count; public MyGridViewAdapter(int page, int count) { this.page = page; this.count = count; } @Override public int getCount() { // TODO Auto-generated method stub return 8; } @Override public Catogray getItem(int position) { // TODO Auto-generated method stub return catogarys.get(page * count + position); } @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 ViewHolder viewHolder = null; final Catogray catogary = catogarys.get(page * count + position); if (convertView == null) { viewHolder = new ViewHolder(); convertView = layoutInflater.inflate(R.layout.grid_fragment_home_item, null); viewHolder.grid_fragment_home_item_img = (ImageView) convertView.findViewById(R.id.grid_fragment_home_item_img); viewHolder.grid_fragment_home_item_txt = (TextView) convertView.findViewById(R.id.grid_fragment_home_item_txt); convertView.setTag(viewHolder); } else { viewHolder = (ViewHolder) convertView.getTag(); } viewHolder.grid_fragment_home_item_img.setImageResource(catogary.getImage_source()); viewHolder.grid_fragment_home_item_txt.setText(catogary.getName()); viewHolder.grid_fragment_home_item_img. setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { // TODO Auto-generated method stub Toast.makeText(TestViewpagerGridActivity.this, catogary.getName(), Toast.LENGTH_SHORT).show(); } }); return convertView; } } public class ViewHolder { public ImageView grid_fragment_home_item_img; public TextView grid_fragment_home_item_txt; }}
Demo下载
最后，以上例子都来源与安卓无忧，请去应用宝或者豌豆荚下载：http://android.myapp.com/myapp/detail.htm?apkName=com.shandong.mm.androidstudy，源码例子文档一网打尽。
ViewPager+GridView实现横向滑动 仿大众点评
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