java - 如何在 android 中使用 recyclerView 传递 id 而不是位置

Question

我在 recyclerView click 中传递了位置，但传递到位置时出现了某种问题以显示错误的数据，所以我如何在 recyclerView 中传递人员 ID。
我是 android 编程新手

recycler查看项目点击

 recyclerView = (RecyclerView) findViewById(R.id.recycler_view);
    buildCustomAdapter = new BuildCustomAdapter(this, peopleList);
    RecyclerView.LayoutManager mLayoutManager = new LinearLayoutManager(getApplicationContext());
    recyclerView.setLayoutManager(mLayoutManager);
    buildCustomAdapter.notifyDataSetChanged();
    recyclerView.setItemAnimator(new DefaultItemAnimator());
    recyclerView.setAdapter(buildCustomAdapter);
buildCustomAdapter.setOnItemClickListener(new BuildCustomAdapter.OnItemClickListener() {
    @Override
    public void onItemClick(View view, int position) {
        detailPeople(position);
    }
});

private void detailPeople(int position) {
    Intent intent = new Intent(this, AddDetail.class);
    intent.putExtra("peopleID", position);
    startActivity(intent);
}

模型类

public class People implements Serializable {
    private String peopleImage;
    private String peopleName;
    private String id;

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public void setPeopleName(String peopleName) {
        this.peopleName = peopleName;
    }

    public String getPeopleName() {
        return peopleName;
    }

    public void setPeopleImage(String peopleImage) {
        this.peopleImage = peopleImage;
    }

    public String getPeopleImage() {
        return peopleImage;
    }
}

适配器代码

public class BuildCustomAdapter extends RecyclerView.Adapter<BuildCustomAdapter.MyViewHolder> implements Filterable {
private List<People> peopleList;
private List<People> peopleListCopy;
private ItemFilter mFilter = new ItemFilter();
private OnItemClickListener mOnItemClickListener;
private Context mContext;

public BuildCustomAdapter(Context context, List<People> buildList) {
    mContext = context;
    this.peopleList = buildList;
    this.peopleListCopy = new ArrayList<>();
    peopleListCopy.addAll(buildList);
}

@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View itemView = LayoutInflater.from(parent.getContext())
            .inflate(R.layout.build_list_row, parent, false);

    return new MyViewHolder(itemView);
}


@Override
public void onBindViewHolder(final MyViewHolder holder, final int position) {

    People people = peopleList.get(position);

    byte[] decodedString = Base64.decode(people.getPeopleImage(), Base64.DEFAULT);
    Bitmap decodedByte = BitmapFactory.decodeByteArray(decodedString, 0, decodedString.length);
    holder.ivPeopleImage.setImageBitmap(decodedByte);
    holder.tvPersonName.setText(people.getPeopleName());

    holder.button.setSelected(people.getStatus() == 1);
    holder.button.setOnClickListener(new onSelectListener(position));

}

@Override
public int getItemCount() {
    return peopleList.size();
}

@Override
public Filter getFilter() {
    if (mFilter == null) {
        mFilter = new ItemFilter();
    }
    return mFilter;
}

public class MyViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
    public TextView tvPersonName;
    public Button button;
    public CircularImageView ivPeopleImage;


    public MyViewHolder(View itemView) {
        super(itemView);
        mContext = itemView.getContext();
        ivPeopleImage = (CircularImageView) itemView.findViewById(R.id.ivPerson);
        tvPersonName = (TextView) itemView.findViewById(R.id.tvPersonName);
        button = (Button) itemView.findViewById(R.id.addbn);
        tvPersonName.setOnClickListener(this);
        ivPeopleImage.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        if (mOnItemClickListener != null)
            mOnItemClickListener.onItemClick(v, getPosition());
    }
}

public void setOnItemClickListener(OnItemClickListener onItemClickListener) {
    mOnItemClickListener = onItemClickListener;
}

public interface OnItemClickListener {
    void onItemClick(View view, int position);

}

private class ItemFilter extends Filter {

    protected FilterResults performFiltering(CharSequence constraint) {
        FilterResults results = new FilterResults();
        if (constraint != null && constraint.length() > 0) {
            List<People> filterList = new ArrayList<>();

            for (int i = 0; i < peopleListCopy.size(); i++) {
                if ((peopleListCopy.get(i).getPeopleName().toUpperCase())
                        .contains(constraint.toString().toUpperCase())) {

                    People peopleName = peopleListCopy.get(i);
                    filterList.add(peopleName);
                }
            }
            results.count = filterList.size();
            results.values = filterList;

        } else {
            results.count = peopleListCopy.size();
            results.values = peopleListCopy;
        }
        return results;
    }

    @Override
    protected void publishResults(CharSequence constraint, FilterResults results) {
        peopleList = (List<People>) results.values;
        notifyDataSetChanged();
    }
}


private class onSelectListener implements View.OnClickListener {

    int mPosition;

    public onSelectListener(int position) {
        mPosition = position;
    }

    @Override
    public void onClick(View view) {
        People people = peopleList.get(mPosition);
        view.setSelected(!view.isSelected());
        people.setStatus(view.isSelected() ? 1 : 0);
        notifyDataSetChanged();
    }
}

}获取 Intent 的下一个 Activity

   Bundle bundle = getIntent().getExtras();
    if (bundle != null) {
        int peopleID = bundle.getInt("peopleID");
        peopleList.clear();

        BuildDataa();
        People peopleDetailsObj = peopleList.get(peopleID);
}

Answer 1

请替换

@Override
public void onClick(View v) {
    if (mOnItemClickListener != null)
        mOnItemClickListener.onItemClick(v, getPosition());
}

到

    @Override
public void onClick(View v) {
    if (mOnItemClickListener != null)
        mOnItemClickListener.onItemClick(v, peopleList.get(getPosition()).getId());
}

在你的适配器中。并更改方法 onItemClick 的签名来自

onItemClick(View v, int position)

到

onItemClick(View v, String id)

并使用它根据 ID 获取人员

  People peopleDetailsObj=null;
  for(People ple:peopleList)
  {
    if(ple.getId().equals(peopleID)){
  peopleDetailsObj=ple;
     break;
   }}