已解决：ViewPager的notifyDataSetChanged不刷新问题

1.ViewPager的适配器必须继承FragmentStatePagerAdapter才能刷新。

2.要在destroyItem加摧毁View的代码

3.在getItemPosition方法中返回POSITION_NONE。

这样，我们在调用mAdapter.notifyDataSetChanged()时才能刷新
具体实现如下：

classMyAdapterextendsFragmentStatePagerAdapter{

privateArrayListreturnFragment;

publicMyAdapter(FragmentManager fm,ArrayList returnFragment) {

super(fm);

this.returnFragment= returnFragment;

}

@Override

publicFragment getItem(intposition) {

returnreturnFragment.get(position);

}

@Override

public void destroyItem(ViewGroup container,intposition, Object object) {

super.destroyItem(container, position, object);

container.removeView(returnFragment.get(position).getView());

}

@Override

public int getCount() {

Log.i("tian","getCount: "+returnFragment.size());

returnreturnFragment.size();

}

@Override

public int getItemPosition(Object object) {

returnPOSITION_NONE;

}

}