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Android
How do I update the particular list item in RecyclerView
Debdeep Ganguly
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posted 7 years ago
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Here is my EditListItemsFragment.java which supports a separate fragment to edit the list items
@Override public View onCreateView(final LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { View view = inflater.inflate(R.layout.fragment_edit_list_item, container, false); mUnbinder = ButterKnife.bind(this, view); // Retrieving Bundle contents mBundle = getArguments(); if (mBundle != null) { // Log.d(TAG, mBundle.toString()); mInformation = mBundle.getParcelable("Information"); // Log.d(TAG, mInformation.name.toString()); fullNameEdit.setText(mInformation.name.toString(), TextView.BufferType.EDITABLE); descriptionEdit.setText(mInformation.description.toString(), TextView.BufferType.EDITABLE); dobEdit.setText(mInformation.dateOfBirth.toString(), TextView.BufferType.EDITABLE); genderEdit.setText(mInformation.gender.toString(), TextView.BufferType.EDITABLE); } else { Toast.makeText(getActivity(), "No data in bundle", Toast.LENGTH_SHORT).show(); } refreshButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { String name = fullNameEdit.getText().toString(); String description = descriptionEdit.getText().toString(); String dob = dobEdit.getText().toString(); String gender = genderEdit.getText().toString(); Information information = new Information(name, description, dob, gender); // getting position of view clicked in DataListFragment setOnItemClick int position = mBundle.getInt("pos"); updateListItem(information, position); getActivity().getSupportFragmentManager().popBackStack(); } }); return view; } private void updateListItem(Information information,int position) { mFragmentListAdapter.notifyItemChanged(position); }
Here's my DataListFragment.java containing the recyclerview list items
@Override public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { View view = inflater.inflate(R.layout.data_list_fragment, container, false); return view; } View.OnClickListener mOnClickListener=new View.OnClickListener() { @Override public void onClick(View view) { Information information = data.get((int)view.getTag()); // Putting recycler view list items data into bundle here mBundle = new Bundle(); mBundle.putParcelable("Information", information); mBundle.putInt("pos",(int) view.getTag()); FragmentManager fragmentManager = getActivity().getSupportFragmentManager(); fragmentManager.beginTransaction().replace(R.id.relative_layout_container, EditListItemsFragment.instantiate(getActivity(),EditListItemsFragment.class.getName(),mBundle), EditListItemsFragment.class.getName()).addToBackStack(EditListItemsFragment.class.getName()).commit(); } }; private void setAdapter() { if (mFragmentListAdapter == null) { data = new ArrayList<>(); mFragmentListAdapter = new FragmentListAdapter(getActivity(), data, mOnClickListener); } else { mFragmentListAdapter.notifyDataSetChanged(); } mRecyclerView.setAdapter(mFragmentListAdapter); } @Override public void onViewCreated(View view, @Nullable Bundle savedInstanceState) { super.onViewCreated(view, savedInstanceState); mRecyclerView = (RecyclerView) view.findViewById(R.id.my_recycler_view); mRecyclerView.setLayoutManager(new LinearLayoutManager(getActivity())); floatingActionButton = (FloatingActionButton) view.findViewById(R.id.myFAB); floatingActionButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { FragmentManager fragmentManager = getActivity().getSupportFragmentManager(); FragmentNewEntryPage fragmentNewEntryPage = new FragmentNewEntryPage(); FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction(); fragmentTransaction.replace(R.id.relative_layout_container, fragmentNewEntryPage, FragmentNewEntryPage.class.getName()); fragmentTransaction.addToBackStack(DataListFragment.class.getName()); fragmentTransaction.commit(); } }); setAdapter(); }
About that updateListItem(), how to implement it ?
Tim Moores
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posted 7 years ago
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What do you want to do that you can't do using the reference to the adapter, or by replacing the adapter with a new one based on the updated data?
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