Android应用中利用ViewPager实现多页面滑动切换效果示例

<&＃63;xml version="1.0" encoding="utf-8"&＃63;>

  
  
    
  

public class ViewPagerDemo extends FragmentActivity {

  /** 页面list **/
  List fragmentList = new ArrayList();
  /** 页面title list **/
  List  titleList  = new ArrayList();

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.view_pager_demo);

    ViewPager vp = (ViewPager)findViewById(R.id.viewPager);
    fragmentList.add(new ViewPagerFragment1("页面1"));
    fragmentList.add(new ViewPagerFragment1("页面2"));
    fragmentList.add(new ViewPagerFragment1("页面3"));
    titleList.add("title 1 ");
    titleList.add("title 2 ");
    titleList.add("title 3 ");
    vp.setAdapter(new myPagerAdapter(getSupportFragmentManager(), fragmentList, titleList));
  }

  /**
   * 定义适配器
   */
  class myPagerAdapter extends FragmentPagerAdapter {

    private List fragmentList;
    private List  titleList;

    public myPagerAdapter(FragmentManager fm, List fragmentList, List titleList){
      super(fm);
      this.fragmentList = fragmentList;
      this.titleList = titleList;
    }

    /**
     * 得到每个页面
     */
    @Override
    public Fragment getItem(int arg0) {
      return (fragmentList == null || fragmentList.size() == 0) &＃63; null : fragmentList.get(arg0);
    }

    /**
     * 每个页面的title
     */
    @Override
    public CharSequence getPageTitle(int position) {
      return (titleList.size() > position) &＃63; titleList.get(position) : "";
    }

    /**
     * 页面的总个数
     */
    @Override
    public int getCount() {
      return fragmentList == null &＃63; 0 : fragmentList.size();
    }
  }
}

public class ViewPagerFragment1 extends Fragment {

  private String  text;
  private TextView tv = null;

  public ViewPagerFragment1(String text){
    super();
    this.text = text;
  }

  /**
   * 覆盖此函数，先通过inflater inflate函数得到view最后返回
   */
  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View v = inflater.inflate(R.layout.view_pager_fragment_demo1, container, false);
    tv = (TextView)v.findViewById(R.id.viewPagerText);
    tv.setText(text);
    return v;
  }
}

package cn.trinea.android.demo;

import java.util.ArrayList;
import java.util.List;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;

public class ViewPagerDemo extends BaseFragmentActivity {

  private static int TOTAL_COUNT = 3;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState, R.layout.view_pager_demo);

    ViewPager vp = (ViewPager)findViewById(R.id.view_pager);
    List fragmentList = new ArrayList();
    List titleList = new ArrayList();
    for (int i = 0; i  fragmentList;
    private List  titleList;

    public myPagerAdapter(FragmentManager fm, List fragmentList, List titleList) {
      super(fm);
      this.fragmentList = fragmentList;
      this.titleList = titleList;
    }

    @Override
    public Fragment getItem(int arg0) {
      return (fragmentList == null || fragmentList.size() == 0) &＃63; null : fragmentList.get(arg0);
    }

    @Override
    public CharSequence getPageTitle(int position) {
      return (titleList.size() > position) &＃63; titleList.get(position) : "";
    }

    @Override
    public int getCount() {
      return fragmentList == null &＃63; 0 : fragmentList.size();
    }
  }
}