Freagmentparge(滑动)

package com.example.day8viewpagerfragment;

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

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

public class MainActivity extends FragmentActivity {

    List<Fragment> list;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
      
      /*
       * 1.初始化控件
       * 2、初始化数据
       * 3、创建adapter对象
       * 4、绑定
       */
        ViewPager vp = (ViewPager) findViewById(R.id.vp);
        initData();
        //因为继承FragmentActivity 那么我们就可以在该类中获取到  这个Fragment管理器
        MyFragmentPagerAdapter adapter = new MyFragmentPagerAdapter(getSupportFragmentManager());
        vp.setAdapter(adapter);
    }

    private void initData() {
        list = new ArrayList<Fragment>();
        list.add(new FragmentOne());
        list.add(new FragmentTwo());
    }

    class MyFragmentPagerAdapter extends FragmentPagerAdapter{

        public MyFragmentPagerAdapter(FragmentManager fm) {
            super(fm);
            // TODO Auto-generated constructor stub
        }

        /**
         * 该方法是用来返回显示的  item  就是 Fragment对象
         * arg0 就是当前viewpager的position
         */
        @Override
        public Fragment getItem(int arg0) {
            // TODO Auto-generated method stub
            return list.get(arg0);
        }

        @Override
        public int getCount() {
            // TODO Auto-generated method stub
            if(list != null){
                return list.size();
            }
            return 0;
        }

    }

}