ViewPager+TabLayout+Fragment刷新Fragment中的数据

1.ViewPager与TabLayout的初始化:

11 private void initData() {
22         mTabFragmentAdapter = new TabFragmentFirstAdapter(getSupportFragmentManager(), mDeptType);
33         mVp.setAdapter(mTabFragmentAdapter);
44         mVp.addOnPageChangeListener(
55                 new TabLayout.TabLayoutOnPageChangeListener(mTabLayout));
66         mVp.setOffscreenPageLimit(3);
77         mTabLayout.setupWithViewPager(mVp);
88 }

2.刷新主要还是靠FragmentPagerAdapter的notifyDataSetChanged()

11 private void reflashData(int type, List<WorkOrderBean.RowsBean> list) {
22         mTabFragmentAdapter.setDataAndType(type, list);
33         mTabFragmentAdapter.notifyDataSetChanged();
44 }

3.当notify时,FragmentPagerAdapter中主要会回调getItemPosition(Object object)方法,在这里判断是哪个Fragment

1 1 　　@Override
2 2     public int getItemPosition(Object object) {
3 3         if (object instanceof WorkSubFirstFragment) {
4 4             if (list0.size()==0)return super.getItemPosition(object);
5 5             ((WorkSubFirstFragment) object).updateView(list0);
6 6         } else if (object instanceof WorkSubFirstFragment1) {
7 7             if (list1.size()==0)return super.getItemPosition(object);
8 8             ((WorkSubFirstFragment1) object).updateView(list1);
9 9         } else if (object instanceof WorkSubFirstFragment2) {
1010             if (list2.size()==0)return super.getItemPosition(object);
1111             ((WorkSubFirstFragment2) object).updateView(list2);
1212         }
1313         return super.getItemPosition(object);
1414     }

4.定义Fragment中的更新视图方法:

11 public void updateView(List<WorkOrderBean.RowsBean> rows) {
22         reflashSelfData(rows);
33 }

小贴士:

    添加数据时不要直接赋值,采用addList()方法最好,并且之前最好清空数据集

11 list0.clear();
22 list0.addAll(list);