android - 每次实例化 fragment 时如何创建一个新的ViewPager(再次创建它)？ (Pager幸免于 fragment 破坏。)

如何在每次删除片段（再次创建）时创建新的viewpager？我的传呼机在碎片破坏中幸存了下来。
我在片段中有一个viewpager，但是当我从framelayout中移除片段并将其添加回原来的位置时。他的viewpager与旧的片段实例相同（我想是的），但是所有片段都消失了（空的pager是空的：）.如何重新创建viewpager？
此代码位于我的片段上的onCreateView（）方法上：

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {

    View fragment = inflater.inflate(getLayoutID(), container,false);
    ViewPager pager = (ViewPager) fragment.findViewById(R.id.myPager);

    PagerAdapter newAdapter = new MyPagerAdapter(getFragmentManager(), getFragments());
    pager.setAdapter(newAdapter);

    return fragment;
}

我想你们只需要知道这些。

最佳答案

现在我知道我不能在碎片里面有碎片，我做了这个viewpageradapter，有一个可以通过（可能是你想要的任何东西）并显示的视图数组。代码来了：
视图页面

import java.util.List;

import android.os.Parcelable;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.View;

public class ViewPagerAdapter extends PagerAdapter{

    private List<View> pages;

    public ViewPagerAdapter(List<View> pages) {
        this.pages = pages;
    }



    @Override
    public Object instantiateItem(View collection, int position) {
        ((ViewPager) collection).addView(pages.get(position),0);

        return pages.get(position);
    }

    @Override
    public int getCount() {
        return pages.size();
    }

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

    /**
     * Remove a page for the given position. The adapter is responsible
     * for removing the view from its container, although it only must ensure
     * this is done by the time it returns from {@link #finishUpdate()}.
     *
     * @param container The containing View from which the page will be removed.
     * @param position The page position to be removed.
     * @param object The same object that was returned by
     * {@link #instantiateItem(View, int)}.
     */
    @Override
    public void destroyItem(View collection, int position, Object view) {
        ((ViewPager) collection).removeView((View) view);
    }

    @Override
    public boolean isViewFromObject(View view, Object object) {
        return view==((View)object);
    }

    /**
     * Called when the a change in the shown pages has been completed. At this
     * point you must ensure that all of the pages have actually been added or
     * removed from the container as appropriate.
     * @param container The containing View which is displaying this adapter's
     * page views.
     */
    @Override
    public void finishUpdate(View arg0) {}

    @Override
    public void restoreState(Parcelable arg0, ClassLoader arg1) {}

    @Override
    public Parcelable saveState() {
        return null;
    }

    @Override
    public void startUpdate(View arg0) {}
}

这里有一个额外的抽象片段，您可以重写抽象方法，然后：
摘要页面摘要

import java.util.List;

import templateDigital.util.ViewPagerAdapter;


import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

public abstract class AbstractPagerFragment extends Fragment {

    private ViewPager pager;
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment

        View fragment = inflater.inflate(getLayoutID(), container,false);
        setRetainInstance(false);
        PagerAdapter mPagerAdapter = new ViewPagerAdapter(getViews());
        pager = (ViewPager) fragment.findViewById(getPagerID());
        pager.setAdapter(mPagerAdapter);
        pager.getAdapter().notifyDataSetChanged();

        return fragment;
    }


    public abstract List<View> getViews();

    public abstract int getLayoutID();

    public abstract int getPagerID();

    @Override
    public void onDestroy() {
        super.onDestroy();
        pager = null;
        System.gc();
    }


}