Question

在我的FragmentActivity中我有一个recycleView，我想在我的Activity中保存实例，因为我有一个带有View寻呼机的tabLayout看起来在图片中问题是如何在我的代码中保存实例以回收视图请帮帮我

这是我的代码：

   public class Menu1Fragment extends Fragment {
        recycleAdapter imp_listArrayAdapter;
        public static ArrayList<String> arrayList = new ArrayList<String>();

        public Menu1Fragment() {
        }

        @Override
        public void onCreate(@Nullable Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
        }

        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                                 Bundle savedInstanceState) {
            View rootView = inflater.inflate(R.layout.list_item, container, false);
            //if (savedInstanceState != null) {
            //Restore the fragment's state here
            //  }
            //

            Boolean a = false;


            ArrayList<imp_list> impLists = new ArrayList<imp_list>();
            impLists.add(new imp_list("Make a Banana", "3000", R.drawable.makabananasplit, a));
            impLists.add(new imp_list("Abdeys Apple Sizzler", "2000", R.drawable.abbeys, a));
            impLists.add(new imp_list("Cheese Cake", "1000", R.drawable.cheesecake, a));
            impLists.add(new imp_list("Choise Of Ice_Cream", "1500", R.drawable.icecream, a));
            impLists.add(new imp_list("Daeth By Chocolate", "3000", R.drawable.deathbychocolate, a));
            impLists.add(new imp_list("Make a Banana", "3000", R.drawable.makabananasplit, a));
            impLists.add(new imp_list("Abdeys Apple Sizzler", "2000", R.drawable.abbeys, a));
            impLists.add(new imp_list("Cheese Cake", "1000", R.drawable.cheesecake, a));
            impLists.add(new imp_list("Choise Of Ice_Cream", "1500", R.drawable.icecream, a));
            impLists.add(new imp_list("Daeth By Chocolate", "3000", R.drawable.deathbychocolate, a));
            impLists.add(new imp_list("Make a Banana", "3000", R.drawable.makabananasplit, a));
            impLists.add(new imp_list("Abdeys Apple Sizzler", "2000", R.drawable.abbeys, a));
            impLists.add(new imp_list("Cheese Cake", "1000", R.drawable.cheesecake, a));
            impLists.add(new imp_list("Choise Of Ice_Cream", "1500", R.drawable.icecream, a));
            impLists.add(new imp_list("Daeth By Chocolate", "3000", R.drawable.deathbychocolate, a));


            imp_listArrayAdapter = new recycleAdapter(getActivity(), impLists);
            RecyclerView recyclerView = (RecyclerView) rootView.findViewById(R.id.res_id);
            recyclerView.setAdapter(imp_listArrayAdapter);
            recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
            arrayList = imp_listArrayAdapter.stringArrayList;


            return rootView;

        }

Answer 1

 public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
       View rootView = inflater.inflate(R.layout.list_item, container, false);
        if(savedInstanceState == null) {
            // do nothing
        } else {
            String something = savedInstanceState.getString("string1");

        }
        return rootView;
    }

    @Override
    public void onSaveInstanceState(Bundle savedInstanceState){
        super.onSaveInstanceState(savedInstanceState);
        savedInstanceState.putString("string1","something");
    }
}

这将有助于改变方向。如果替换片段而不将其放在backstack中，则其状态（以及保存的实例状态）将与片段一起清除。

在FragmentActivity中保存了实例

这是我的代码：

1 个答案: