viewpager+fragment实现滑动页面

1、适配器

package com.example.adapter;

import java.util.List;

import android.content.Intent;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentStatePagerAdapter;
import android.util.Log;
import android.view.ViewGroup;

import com.example.bean.Will;
import com.example.fragment.WillFragment;

public class WillPagerAdapter extends FragmentStatePagerAdapter {

    private List<Will> mList;

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

    public WillPagerAdapter(FragmentManager fm, List<Will> list) {
        this(fm);
        // TODO Auto-generated constructor stub
        mList = list;
    }

    /*
     * 生成新的 Fragment 对象。 .instantiateItem() 在大多数情况下，都将调用 getItem() 来生成新的对象
     */
    @Override
    public Fragment getItem(int position) {
        // TODO Auto-generated method stub
        WillFragment fragment = WillFragment.newInstance(mList.get(position));
        return fragment;
    }

    @Override
    public Object instantiateItem(ViewGroup container, int position) {
        // TODO Auto-generated method stub
        Log.i("instantiateItem", "position=" + position);
        // 得到缓存的fragment
        WillFragment fragment = (WillFragment) super.instantiateItem(container,
                position);
        return fragment;
    }

    @Override
    public int getCount() {
        // TODO Auto-generated method stub
        return mList.size();
    }

    /**
     * 要求getItemPosition、FragmentStatePagerAdapter
     */
    public void remove(int position) {
        mList.remove(position);
        notifyDataSetChanged();
    }

    @Override
    public int getItemPosition(Object object) {
        return POSITION_NONE;
    }

}

 

2、WillFragment

    public static WillFragment newInstance(Will will) {
        Log.i("WillFragment", "newInstance=" + will);

        WillFragment fragment = new WillFragment();
        Bundle bundle = new Bundle();
        bundle.putSerializable("will", will);
        fragment.setArguments(bundle);

        return fragment;

    }

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mWill = getArguments() != null ? (Will) getArguments().getSerializable(
                "will") : mWill;

        Log.i(tag, "onCreate=" + mWill);

        likeFlag = mWill.isLike();
        viewFlag = likeFlag;

    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        // 如果提供root时，返回值其实就是这个root，这个方法就是把xml解析成view之后挂载这个root下。
        // 如果root传null(不提供root)，返回值是View，它就是xml布局里面的根节点
        View view = inflater.inflate(R.layout.fragment_will, container, false);
return view
}

    public static WillFragment newInstance(Will will) {
        Log.i("WillFragment", "newInstance=" + will);

        WillFragment fragment = new WillFragment();
        Bundle bundle = new Bundle();
        bundle.putSerializable("will", will);
        fragment.setArguments(bundle);

        return fragment;

    }

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mWill = getArguments() != null ? (Will) getArguments().getSerializable(
                "will") : mWill;

        Log.i(tag, "onCreate=" + mWill);

        likeFlag = mWill.isLike();
        viewFlag = likeFlag;

    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        // 如果提供root时，返回值其实就是这个root，这个方法就是把xml解析成view之后挂载这个root下。
        // 如果root传null(不提供root)，返回值是View，它就是xml布局里面的根节点
        View view = inflater.inflate(R.layout.fragment_will, container, false);
        return view
}

 

WillActivity

private WillPagerAdapter mAdapter;
....
mViewPager = (ViewPager) findViewById(R.id.will_activity_pager);
mAdapter = new WillPagerAdapter(getSupportFragmentManager(), mWills);
mViewPager.setAdapter(mAdapter);
Log.i("WillActivity", "" + position);
mViewPager.setCurrentItem(position);

 

 

Done！