Tipos incompatibles: no se puede emitir el visor a imageviewholder

Este es el archivo actualizado:

 public class MyAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> { private ArrayList<String> mDataset; public class ImageViewHolder extends RecyclerView.ViewHolder { //ImageView mImage; public TextView txtHeader; public TextView txtFooter; public ImageViewHolder(View itemView) { super (itemView); txtHeader = (TextView) itemView.findViewById(R.id.firstLine1); txtFooter = (TextView) itemView.findViewById(R.id.secondLine1); } } // Provide a reference to the views for each data item // Complex data items may need more than one view per item, and // you provide access to all the views for a data item in a view holder public class TextViewHolder extends RecyclerView.ViewHolder { // each data item is just a string in this case public TextView txtHeader; public TextView txtFooter; public TextViewHolder(View v) { super(v); txtHeader = (TextView) v.findViewById(R.id.firstLine); txtFooter = (TextView) v.findViewById(R.id.secondLine); } } public void add(int position, String item) { mDataset.add(position, item); notifyItemInserted(position); } public void remove(String item) { int position = mDataset.indexOf(item); mDataset.remove(position); notifyItemRemoved(position); } // Provide a suitable constructor (depends on the kind of dataset) public MyAdapter(ArrayList<String> myDataset) { mDataset = myDataset; } // Create new views (invoked by the layout manager) @Override public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { if (viewType == TYPE_IMAGE) { // create a new view View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.rowlayout, parent, false); // set the view's size, margins, paddings and layout parameters ImageViewHolder vh = new ImageViewHolder(v); return vh; } else { // create a new view View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.rowlayout, parent, false); // set the view's size, margins, paddings and layout parameters TextViewHolder vh = new TextViewHolder(v); return vh; } } private static final int TYPE_IMAGE = 1; private static final int TYPE_GROUP = 2; @Override public int getItemViewType(int position) { // here your custom logic to choose the view type return position == 0 ? TYPE_IMAGE : TYPE_GROUP; } // Replace the contents of a view (invoked by the layout manager) @Override public void onBindViewHolder(RecyclerView.ViewHolder TextViewHolder, int position) { switch (TextViewHolder.getItemViewType()) { case TYPE_IMAGE: ImageViewHolder imageViewHolder = (ImageViewHolder) TextViewHolder; // imageViewHolder.mImage.setImageResource(...); final String namev = mDataset.get(position); imageViewHolder.txtHeader.setText(mDataset.get(position)); imageViewHolder.txtHeader.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { remove(namev); } }); break; case TYPE_GROUP: TextViewHolder viewHolder = (TextViewHolder) TextViewHolder; // viewHolder.txtHeader.setText(...) final String name = mDataset.get(position); viewHolder.txtHeader.setText(mDataset.get(position)); viewHolder.txtHeader.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { remove(name); } }); viewHolder.txtFooter.setText("Footer: " + mDataset.get(position)); break; } /* // - get element from your dataset at this position // - replace the contents of the view with that element final String name = mDataset.get(position); holder.txtHeader.setText(mDataset.get(position)); holder.txtHeader.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { remove(name); } }); holder.txtFooter.setText("Footer: " + mDataset.get(position)); */ } // Return the size of your dataset (invoked by the layout manager) @Override public int getItemCount() { return mDataset.size(); } } 

Usted debe cambiar:

  public class MyAdapter extends RecyclerView.Adapter<MyAdapter.TextViewHolder> 

para:

  public class MyAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> 

Y luego cambia tu onCreateViewHolder para aceptar múltiples ViewTypes:

  @Override public MyAdapter.TextViewHolder onCreateViewHolder(ViewGroup parent, int viewType) 

para:

  @Override public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) 

A continuación, cambie el método onBindViewHolder:

  @Override public void onBindViewHolder(TextViewHolder TextViewHolder, int position) 

para:

  @Override public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) 

Y no olvides establecer tus tipos de ViewHolder:

  @Override public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType){ switch (viewType) { case TYPE_IMAGE: { View itemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.XXX, parent, false); return new ImageViewHolder(itemView); } case TYPE_GROUP: { View itemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.XXX, parent, false); return new TextViewHolder(itemView); } }