fragment中嵌套使用viewpager不显示的解决方案

private void InitViewPager(View parentView) {
       mPager = (ViewPager) parentView.findViewById(R.id.vPager);
       fragmentsList = new ArrayList<Fragment>();


       fragment1 = new SortHotFragment();
       fragment2 = new SortNewFragment();


       fragmentsList.add(fragment1);
       fragmentsList.add(fragment2);
       
       mPager.setAdapter(new MyFragmentPagerAdapter(getActivity().getSupportFragmentManager(), fragmentsList));
       mPager.setCurrentItem(0);
       mPager.setOnPageChangeListener(new MyOnPageChangeListener());
 }

 

解决方法为第二层的fragment中getSupportFragmentManager()使用getChildFragmentManager(),代替就可以了。

 

使用viewPager类似ios tabbar布局解决切换时界面销毁的问题可以使用

 

viewPager.setOffscreenPageLimit(2);

 

 

 

viewPager+fragment刷新不生效的解决办法：

 

 

 

package com.hortor.officecloud.ui;

 

import java.util.ArrayList;

 

import android.support.v4.app.Fragment;

import android.support.v4.app.FragmentManager;

import android.support.v4.app.FragmentPagerAdapter;

import android.support.v4.app.FragmentTransaction;

 

 

publicclass FragmentVPAdapter extends FragmentPagerAdapter {

private ArrayList<Fragment> fragments; 

private FragmentManager fm;

public FragmentVPAdapter(FragmentManager fm, ArrayList<Fragment> fragments) {

super(fm);

this.fm = fm;

this.fragments = fragments;

}

 

publicvoid setFragments(ArrayList<Fragment> fragments) {

if(this.fragments != null){

FragmentTransaction ft = fm.beginTransaction();

for(Fragment f:this.fragments){

ft.remove(f);

}

ft.commit();

ft=null;

fm.executePendingTransactions();

}

this.fragments = fragments;

notifyDataSetChanged();

}

 

@Override  

publicint getItemPosition(Object object) {  

    return POSITION_NONE;  

}  

 

@Override

public Fragment getItem(int arg0) {

return fragments.get(arg0);

}

 

@Override

publicint getCount() {

return fragments.size();

}

 

}