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Fragment中的viewpager里面填充子fragment的问题

2015-11-30 16:14 405 查看
最近遇到一个问题,在fragment中有一个spinner,切换他的时候,viewpager里面的子fragment也要加载新的数据,发现设置的bundle与在里面getargument获得的bundle不一致,get到的都是第一次的bundle,最终解决问题是需要重写FragmentPagerAdapter里面的destroyItem方法,完整代码如下:

package cn.com.eado.remotemonitor.adaper;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.app.FragmentTransaction;
import android.view.View;
import android.view.ViewGroup;

import java.util.ArrayList;

import cn.com.eado.remotemonitor.Utils.T;

/**
 * viewpager每一页均为fragment的adapter适配器;
 * Created by lcy on 2015/10/28.
 */
public class MyFragmentPagerAdapter extends FragmentPagerAdapter {
    ArrayList<Fragment> listFragments;
    public MyFragmentPagerAdapter(FragmentManager fm, ArrayList<Fragment> al) {
        super(fm);
        listFragments = al;
    }

    public MyFragmentPagerAdapter(FragmentManager fm) {
        super(fm);
    }
    @Override
    public Fragment getItem(int position) {
        return listFragments.get(position);
    }
    @Override
    public int getCount() {
        return listFragments.size();
    }

    //这个注意要重写;
    @Override
    public void destroyItem(ViewGroup container, int position, Object object) {
        super.destroyItem(container, position, object);
        if (position <= getCount()) {
            FragmentManager manager = ((Fragment) object).getFragmentManager();
            FragmentTransaction trans = manager.beginTransaction();
            trans.remove((Fragment) object);
            trans.commit();
        }
    }
}


listFragments = new ArrayList<>();
energyFragment = EnergyFragment.newInstance(currentPID);
monthFragment = MonthFragment.newInstance(currentPID);
peakFragment =PeakFragment.newInstance(currentPID);
listFragments.add(energyFragment);
listFragments.add(monthFragment);
listFragments.add(peakFragment);
adapter=new MyFragmentPagerAdapter(fm, listFragments);
viewPager.setAdapter(adapter);
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