Created
September 21, 2018 07:01
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public class LiteratureAdapter extends RecyclerView.Adapter { | |
private List<Literature> mLiteratureList; | |
@NonNull | |
@Override | |
public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) { | |
View itemView; | |
switch (viewType) { | |
case Literature.TYPE_BOOK: | |
itemView = LayoutInflater.from(parent.getContext()) | |
.inflate(R.layout.your_layout, parent, false); | |
return new BookViewHolder(itemView); | |
case Literature.TYPE_MAGAZINE: | |
itemView = LayoutInflater.from(parent.getContext()) | |
.inflate(R.layout.your_layout, parent, false); | |
return new MagazineViewHolder(itemView); | |
default: // TYPE_NEWSPAPER | |
itemView = LayoutInflater.from(parent.getContext()) | |
.inflate(R.layout.your_layout, parent, false); | |
return new NewspaperViewHolder(itemView); | |
} | |
} | |
@Override | |
public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, int position) { | |
switch (getItemViewType(position)) { | |
case Literature.TYPE_BOOK: | |
((BookViewHolder) holder).bindView(position); | |
break; | |
case Literature.TYPE_MAGAZINE: | |
((MagazineViewHolder) holder).bindView(position); | |
break; | |
case Literature.TYPE_NEWSPAPER: | |
((NewspaperViewHolder) holder).bindView(position); | |
break; | |
} | |
} | |
@Override | |
public int getItemCount() { | |
if (mLiteratureList == null) { | |
return 0; | |
} else { | |
return mLiteratureList.size(); | |
} | |
} | |
@Override | |
public int getItemViewType(int position) { | |
return mLiteratureList.get(position).getType(); | |
} | |
public void setLiteratureList(List<? extends Literature> literatureList) { | |
if (mLiteratureList == null){ | |
mLiteratureList = new ArrayList<>(); | |
} | |
mLiteratureList.clear(); | |
mLiteratureList.addAll(literatureList); | |
notifyDataSetChanged(); | |
} | |
class BookViewHolder extends RecyclerView.ViewHolder { | |
public BookViewHolder(View itemView) { | |
super(itemView); | |
// get reference to views | |
// itemView.findViewById... | |
} | |
void bindView(int position) { | |
Book book = (Book) mLiteratureList.get(position); | |
// bind data to the views | |
// textView.setText()... | |
} | |
} | |
class MagazineViewHolder extends RecyclerView.ViewHolder { | |
public MagazineViewHolder(View itemView) { | |
super(itemView); | |
// get reference to views | |
} | |
void bindView(int position) { | |
Magazine magazine = (Magazine) mLiteratureList.get(position); | |
// bind data to the views | |
} | |
} | |
class NewspaperViewHolder extends RecyclerView.ViewHolder { | |
public NewspaperViewHolder(View itemView) { | |
super(itemView); | |
// get reference to views | |
} | |
void bindView(int position) { | |
Newspaper newspaper = (Newspaper) mLiteratureList.get(position); | |
// bind data to the views | |
} | |
} | |
} |
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