ViewPager+TabLayout+Fragment刷新Fragment中的数据

1.ViewPager与TabLayout的初始化:

1 private void initData() {2 mTabFragmentAdapter = new TabFragmentFirstAdapter(getSupportFragmentManager(), mDeptType);3 mVp.setAdapter(mTabFragmentAdapter);4 mVp.addOnPageChangeListener(5 new TabLayout.TabLayoutOnPageChangeListener(mTabLayout));6 mVp.setOffscreenPageLimit(3);7 mTabLayout.setupWithViewPager(mVp);8 }

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

1 private void reflashData(int type, List<WorkOrderBean.RowsBean> list) {2 mTabFragmentAdapter.setDataAndType(type, list);3 mTabFragmentAdapter.notifyDataSetChanged();4 }

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 @Override 2public int getItemPosition(Object object) { 3 if (object instanceof WorkSubFirstFragment) { 4 if (list0.size()==0)return super.getItemPosition(object); 5 ((WorkSubFirstFragment) object).updateView(list0); 6 } else if (object instanceof WorkSubFirstFragment1) { 7 if (list1.size()==0)return super.getItemPosition(object); 8 ((WorkSubFirstFragment1) object).updateView(list1); 9 } else if (object instanceof WorkSubFirstFragment2) {10 if (list2.size()==0)return super.getItemPosition(object);11 ((WorkSubFirstFragment2) object).updateView(list2);12 }13 return super.getItemPosition(object);14}

4.定义Fragment中的更新视图方法:

1 public void updateView(List<WorkOrderBean.RowsBean> rows) {2 reflashSelfData(rows);3 }

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

1 list0.clear();2 list0.addAll(list);