重置标签栏操作上的片段状态（不保存或恢复）

Question

每当我通过标签栏动作导航到片段时，如何重置片段的状态。 例如：我有两个TABS（A和B），每个都有3个片段。 目前，我在标签B的片段3中。   - 我选择标签A.   - 我选择标签B 预期结果应该是相应标签（B）的片段编号1。 它实际上是什么，它将我带到以前保存的状态，即片段3。

        toolBarTextView  = (TextView) findViewById(R.id.toolBarTextView);
        viewPager = (ViewPager) findViewById(R.id.pager);

        adapter = new ViewPagerAdapter(getSupportFragmentManager());
        tabLayout = (TabLayout) findViewById(R.id.tabLayout);

        // Add Fragments to adapter one by one -- For TAB 1
        if (fragmentNo != 1){
            adapter.addFragment(new OpenOrdersFragment(),"0\nOPEN");
        }else if (fragmentNo == 1){
            //from OpenOrdersFragment fragment to move in BookingDetailFragment
            adapter.addFragment(new BookingDetailFragment(),"0\nOPEN");
        }

        //from assigned fragment to move in BookingDetailFragment   -- For TAB 2
        if (fragmentNo == 0 || fragmentNo == 1 || fragmentNo == 2){
        //adapter.addFragment(new BookingAssigned(),"0\nASSIGNED");
        } else if (fragmentNo == 3){
            adapter.addFragment(new 
            BookingDetailFragment("assigned"),"0\nASSIGNED");
        }else if (fragmentNo == 4){
            adapter.addFragment(new PickUpFragment(),"0\nASSIGNED");
        }

//        -- For TAB 3
        adapter.addFragment(new BookingDelivered(),"0\nDELIVERED");
        viewPager.setAdapter(adapter);
}
}