ViewPager+TabLayout+Fragment刷新Fragment中的數據

1.ViewPager與TabLayout的初始化:

private void initData() {
        mTabFragmentAdapter = new TabFragmentFirstAdapter(getSupportFragmentManager(), mDeptType);
        mVp.setAdapter(mTabFragmentAdapter);
        mVp.addOnPageChangeListener(
                new TabLayout.TabLayoutOnPageChangeListener(mTabLayout));
        mVp.setOffscreenPageLimit(3);
        mTabLayout.setupWithViewPager(mVp);
}

 

2.刷新主要還是靠FragmentPagerAdapter的notifyDataSetChanged()

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

3.當notify時,FragmentPagerAdapter中主要會回調getItemPosition(Object object)方法,在這里判斷是哪個Fragment

　　@Override
    public int getItemPosition(Object object) {
        if (object instanceof WorkSubFirstFragment) {
            if (list0.size()==0)return super.getItemPosition(object);
            ((WorkSubFirstFragment) object).updateView(list0);
        } else if (object instanceof WorkSubFirstFragment1) {
            if (list1.size()==0)return super.getItemPosition(object);
            ((WorkSubFirstFragment1) object).updateView(list1);
        } else if (object instanceof WorkSubFirstFragment2) {
            if (list2.size()==0)return super.getItemPosition(object);
            ((WorkSubFirstFragment2) object).updateView(list2);
        }
        return super.getItemPosition(object);
    }

 

4.定義Fragment中的更新視圖方法:

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

小貼士:

    添加數據時不要直接賦值,采用addList()方法最好,並且之前最好清空數據集

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