I have an array of a CardView (CardView) which I load into RecyclerView.

I want to separate these cards with my element, I do not understand how this can be done.

For example:

RecyclerView
Header1, action button
Cardview
Cardview
Cardview
Title2, action button
Cardview
Cardview
Cardview
Header 3, action button
Cardview
Cardview
Cardview
RecyclerView

    3 answers 3

    You need to determine the type of the element according to the position of the element and, depending on this, load certain markup and display it:

    //ΠΌΠ΅Ρ‚ΠΎΠ΄, Π² ΠΊΠΎΠ΅ΠΌ Π²Ρ‹ Π΄ΠΎΠ»ΠΆΠ½Ρ‹ Π² зависимости ΠΎΡ‚ ΠΏΠΎΠ·ΠΈΡ†ΠΈΠΈ элСмСнта Π²ΠΎΠ·Π²Ρ€Π°Ρ‰Π°Ρ‚ΡŒ //Π΅Ρ‘ Ρ‚ΠΈΠΏ Π² Π²ΠΈΠ΄Π΅ числа, ΠΊΠΎΠ΅ ΠΏΠΎΡ‚ΠΎΠΌ ΠΈΡΠΏΠΎΠ»ΡŒΠ·ΡƒΠ΅Ρ‚ΡΡ Π² onCreateViewHolder для Π·Π°Π³Ρ€ΡƒΠ·ΠΊΠΈ Ρ€Π°Π·ΠΌΠ΅Ρ‚ΠΊΠΈ //ΠΈ Π² onBindViewHolder для наполнСния Π΅Ρ‘ Π΄Π°Π½Π½Ρ‹ΠΌΠΈ @Override public int getItemViewType(int position) { if (position == 0) { return 0; } else { return 1; } } @Override public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { RecyclerView.ViewHolder vh; View itemLayoutView; //Π·Π°Π³Ρ€ΡƒΠΆΠ°Π΅ΠΌ Ρ€Π°Π·ΠΌΠ΅Ρ‚ΠΊΡƒ Π² зависимости ΠΎΡ‚ Ρ‚ΠΈΠΏΠ° ΠΈ Π²ΠΎΠ·Π²Ρ€Π°Ρ‰Π°Π΅ΠΌ //Π½ΡƒΠΆΠ½Ρ‹ΠΉ Ρ…ΠΎΠ»Π΄Π΅Ρ€ switch (viewType) { case 0: itemLayoutView = LayoutInflater.from(parent.getContext()).inflate(R.layout.zero_type_layout, parent, false); vh = new HolderZeroType(itemLayoutView); break; case 1: itemLayoutView = LayoutInflater.from(parent.getContext()).inflate(R.layout.first_type_layout, parent, false); vh = new HolderFirstType(itemLayoutView); break; } return vh; } @Override public void onBindViewHolder(final RecyclerView.ViewHolder holder, final int position) { switch (this.getItemViewType(position)) { case 0: HolderZeroType zero = (HolderZeroType) holder; //наполняСм Π΄Π°Π½Π½Ρ‹ΠΌΠΈ Ρ€Π°Π·ΠΌΠ΅Ρ‚ΠΊΡƒ для Π½ΡƒΠ»Π΅Π²ΠΎΠ³ΠΎ Ρ‚ΠΈΠΏΠ° break; case 1: HolderFirstType first = (HolderFirstType) holder; //наполняСм Π΄Π°Π½Π½Ρ‹ΠΌΠΈ Ρ€Π°Π·ΠΌΠ΅Ρ‚ΠΊΡƒ для Π½ΡƒΠ»Π΅Π²ΠΎΠ³ΠΎ Ρ‚ΠΈΠΏΠ° break; } } public static class HolderFirstType extends RecyclerView.ViewHolder { ... public ViewHolderText(View v) { super(v); ... } } public static class HolderZeroType extends RecyclerView.ViewHolder { ... public ViewHolderText(View v) { super(v); ... } }

      Here is another example in the list is inserted Header and Footer.

      Instead of enum, you can use constants.

        public class RecyclerAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> { int footerHeight; List<String> newCities; private enum ItemType { CARD_VIEW { @Override public int number() { return 1; } }, HEADER { @Override public int number() { return 2; } }, FOOTER { @Override public int number() { return 3; } }; public abstract int number(); } private List<String> mItemList; private final View.OnClickListener mListener; private final View.OnLongClickListener mLongListener; public RecyclerAdapter(List<String> itemList, View.OnClickListener mListener, View.OnLongClickListener mLongListener) { mItemList = itemList; this.mListener = mListener; this.mLongListener = mLongListener; newCities = new ArrayList<>(); } @Override public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { Context context = parent.getContext(); if (viewType == ItemType.CARD_VIEW.number()) { final View view = LayoutInflater.from(parent.getContext()). inflate(R.layout.recycler_item, parent, false); return new RecyclerItemViewHolder(view, mListener, mLongListener); } else if (viewType == ItemType.HEADER.number()) { final View view = LayoutInflater.from(context).inflate(R.layout.recycler_header, parent, false); return new RecyclerEmptyViewHolder(view); } else if (viewType == ItemType.FOOTER.number()) { final View view = LayoutInflater.from(context).inflate(R.layout.recycler_footer, parent, false); ViewGroup.LayoutParams params = view.getLayoutParams(); params.height = footerHeight; view.requestLayout(); return new RecyclerEmptyViewHolder(view); } throw new RuntimeException("There is no type that matches the type " + viewType + " + make sure your using types correctly"); } @Override public void onBindViewHolder(RecyclerView.ViewHolder viewHolder, int position) { if (!(isPositionHeader(position) || isLastPosition(position))) { RecyclerItemViewHolder holder = (RecyclerItemViewHolder) viewHolder; String itemText = mItemList.get(position - 1); // we are taking header in to account so all of our items are correctly positioned if (newCities.contains(itemText)) { holder.markCityAsNew(true); } else { holder.markCityAsNew(false); } holder.setItemFavoriteState(PositionManager.getInstance().isFavouriteCity(itemText)); holder.setItemText(itemText); } } public int getBasicItemCount() { return mItemList == null ? 0 : mItemList.size(); } //our new getItemCount() that includes header View @Override public int getItemCount() { return getBasicItemCount() + 1 + 1; // header } // returns viewType for a given position @Override public int getItemViewType(int position) { if (isPositionHeader(position)) { return ItemType.HEADER.number(); } if (isLastPosition(position)) { return ItemType.FOOTER.number(); } return ItemType.CARD_VIEW.number(); } // check if given position is a header private boolean isPositionHeader(int position) { return position == 0; } private boolean isLastPosition(int position) { return position == getItemCount() - 1; } public void setFooterHeight(int height) { footerHeight = height * 4; } public void addCityToNewLocationsList(String city) { newCities.add(city); } }

        Very interesting library, just can solve your problem RendererRecyclerViewAdapter