GetAdapterPosition () no devuelve la posición del elemento en RecyclerView

Esta es una especie de seguimiento o complemento a este post . Estoy tratando de obtener la posición de un elemento en mi RecyclerView, pero ninguno de los métodos que he probado han funcionado.

Llamé getAdapterPosition () en mi constructor PersonViewHolder y PersonViewHolder su valor a la posición entero, que se usa en la clase UnitOneFragment para hacer algo en consecuencia (ver método onClick ()). Pero cualquier cosa que sea, no sucede y mi suposición es porque el método getAdapterPosition () no funciona o no se usa correctamente.

Mi adaptador:

 public class RVAdapter extends RecyclerView.Adapter<RVAdapter.PersonViewHolder> { Context mContext; RVAdapter(Context context, List<Chapter> chapters) { mContext = context; this.chapters = chapters; } public static CardView cv; public static int position; public static String chapterNumberTitle; public class PersonViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener { TextView chapterName; TextView chapterNumber; // ImageView chapterPhoto; public PersonViewHolder(View itemView) { super(itemView); cv = (CardView) itemView.findViewById(R.id.cv); chapterName = (TextView) itemView.findViewById(R.id.chapter_name); chapterNumber = (TextView) itemView.findViewById(R.id.chapter_number); // chapterPhoto = (ImageView) itemView.findViewById(R.id.person_photo); chapterNumberTitle = chapterNumber.getText().toString(); position = getAdapterPosition(); itemView.setOnClickListener(this); } @Override public void onClick(View v) { UnitOneFragment.chapterChecker(); Intent intent = new Intent(mContext, ChapterActivity.class); mContext.startActivity(intent); } } List<Chapter> chapters; @Override public void onAttachedToRecyclerView(RecyclerView recyclerView) { super.onAttachedToRecyclerView(recyclerView); } @Override public PersonViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) { View v = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.item, viewGroup, false); PersonViewHolder pvh = new PersonViewHolder(v); return pvh; } @Override public void onBindViewHolder(PersonViewHolder personViewHolder, int i) { personViewHolder.chapterName.setText(chapters.get(i).chapterName); personViewHolder.chapterNumber.setText(chapters.get(i).chapterNumber); // personViewHolder.chapterPhoto.setImageResource(persons.get(i).photoId); } @Override public int getItemCount() { return chapters.size(); } } 

La otra clase:

 public class UnitOneFragment extends android.support.v4.app.Fragment { private List<Chapter> chapters; private RecyclerView rv; private RecyclerView.LayoutManager llm; public UnitOneFragment() { // Required empty public constructor } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { // Inflate the layout for this fragment View v = inflater.inflate(R.layout.fragment_unit_one, container, false); getActivity().setTitle("Unit One"); rv = (RecyclerView) v.findViewById(R.id.rv); rv.setHasFixedSize(true); llm = new LinearLayoutManager(getActivity()); rv.setLayoutManager(llm); initializeData(); initializeAdapter(); return v; } private void initializeData() { chapters = new ArrayList<>(); chapters.add(new Chapter("Human Prehistory to the Early Civilizations", "Chapter One")); chapters.add(new Chapter("Classical China", "Chapter Two")); chapters.add(new Chapter("Classical India", "Chapter Three")); chapters.add(new Chapter("Classical Greece and Rome", "Chapter Four")); chapters.add(new Chapter("Classical Period: Declines and Diversities", "Chapter Five")); } private void initializeAdapter() { RVAdapter adapter = new RVAdapter(getActivity(), chapters); rv.setAdapter(adapter); } public static void chapterChecker() { if (RVAdapter.position == 0) { SummaryFragment.summaryText.setText("Contrary to popular belief, Lorem Ipsum is not simply random text. It has roots in a piece of classical Latin literature from 45 BC, making it over 2000 years old. Richard McClintock, a Latin professor at Hampden-Sydney College in Virginia, looked up one of the more obscure Latin words, consectetur, from a Lorem Ipsum passage, and going through the cites of the word in classical literature, discovered the undoubtable source. Lorem Ipsum comes from sections 1.10.32 and 1.10.33 of \"de Finibus Bonorum et Malorum\" (The Extremes of Good and Evil) by Cicero, written in 45 BC. This book is a treatise on the theory of ethics, very popular during the Renaissance. The first line of Lorem Ipsum, \"Lorem ipsum dolor sit amet..\", comes from a line in section 1.10.32."); } } } class Chapter { String chapterName; String chapterNumber; // int photoId; Chapter(String chaptername, String chapternumber) { this.chapterName = chaptername; this.chapterNumber = chapternumber; // this.photoId = photoId; } } 

Mi código parece bastante auto-explicativo, pero si hay algo confuso, por favor hágamelo saber y voy a añadir más información. Una vez más, el problema es que no puedo obtener la posición del elemento en el RecyclerView y luego actuar sobre él.

    One Solution collect form web for “GetAdapterPosition () no devuelve la posición del elemento en RecyclerView”

    Llame a getAdapterPosition en su método onClick porque entonces en el momento del clic u desea saber la posición del elemento. Si comprueba en el momento de la creación que será (la mayoría de las veces) ser inexacto.

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