如何将单个RecycleView适配器用于多个布局java

Question

我创建了一个Recycler-View适配器，我想知道如何在多个布局中使用同一个适配器？第一个布局是一个可扩展的卡视图，我想在另一个具有另一个布局的活动中使用此适配器我需要创建另一个适配器吗？或者有什么方法可以再次使用这个适配器？这是我的适配器代码：

public class BookRecyclerViewAdapter extends RecyclerView.Adapter<BookRecyclerViewAdapter.viewHolder> {

private ArrayList<Book> books = new ArrayList<>();
private Context context;
public BookRecyclerViewAdapter(Context context) {
this.context = context;
}

@NonNull
@Override
public viewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.list_item_book, parent, false);
return new viewHolder(view);
}

@Override
public void onBindViewHolder(@NonNull viewHolder holder, int position) {
holder.txtName.setText(books.get(position).getName());
holder.txtAuthor.setText(books.get(position).getAuthor());
holder.txtDesc.setText(books.get(position).getShortDesc());
Glide.with(context)
.asBitmap()
.load(books.get(position).getImgUrl())
.into(holder.imgBook);
holder.parent.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(context, BookActivity.class);
intent.putExtra(BOOK_ID_KEY, books.get(position).getId());
context.startActivity(intent);
}
});

if (books.get(position).isExpanded()) {
TransitionManager.beginDelayedTransition(holder.parent);
holder.expanded.setVisibility(View.VISIBLE);
holder.downArrow.setVisibility(View.GONE);
} else {
TransitionManager.beginDelayedTransition(holder.parent);
holder.expanded.setVisibility(View.GONE);
holder.downArrow.setVisibility(View.VISIBLE);
}
}
@Override
public int getItemCount() {
return books.size();
}
public void setBooks(ArrayList<Book> books) {
this.books = books;
notifyDataSetChanged();
}
public class viewHolder extends RecyclerView.ViewHolder {
private CardView parent;
private ImageView imgBook;
private TextView txtName;
private ImageView downArrow, upArrow;
private RelativeLayout expanded, collapsed;
private TextView txtAuthor, txtDesc;

public viewHolder(@NonNull View itemView) {
super(itemView);
parent = itemView.findViewById(R.id.parent);
imgBook = itemView.findViewById(R.id.imgBook);
txtName = itemView.findViewById(R.id.txtBookName);
downArrow = itemView.findViewById(R.id.btnDownArrow);
upArrow = itemView.findViewById(R.id.btnUpArrow);
expanded = itemView.findViewById(R.id.expandedRellayout);
collapsed = itemView.findViewById(R.id.collapsedRelLayout);
txtAuthor = itemView.findViewById(R.id.txtAuthor);
txtDesc = itemView.findViewById(R.id.txtShortDesc);
downArrow.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Book book = books.get(getAdapterPosition());
book.setExpanded(!book.isExpanded());
notifyItemChanged(getAdapterPosition());
}
});
upArrow.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Book book = books.get(getAdapterPosition());
book.setExpanded(!book.isExpanded());
notifyItemChanged(getAdapterPosition());
}
});
}
}
}

Answer 1

找到解决方案并决定与所有人共享。您可以在上一个项布局中创建另一个布局，并使其可见性消失。在onBindViewHolder内的适配器类中，您可以创建一个逻辑，用于在新活动中将可见性更改为"Visible"。

if ( parentActivity.equals("new Activity Name") {
holder.newLayout.setVisibilty(Visible)
}