Android 在回收器视图中单击项目是否获取TextView的值？

当我单击RecyclerView中项目的TextView时，我需要TextView的值。我不希望整个项目可点击，我只需要单一的文本查看项目可点击，这是“countNumber”在下面的代码。当我点击它时，我想得到countNumber显示的文本数据

回收器适配器

 public class CustomAdapter extends RecyclerView.Adapter<CustomAdapter.MyViewHolder> {

    ArrayList<UserData> dataSet = new ArrayList<>();

    public CustomAdapter(ArrayList<UserData> data) {
        this.dataSet = data;
    }

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


        MyViewHolder myViewHolder = new MyViewHolder(view);
        return myViewHolder;
    }

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

        holder.heading.setText(dataSet.get(listPosition).getHeading());
        holder.description.setText(dataSet.get(listPosition).getDescription());
        holder.countNumber.setText(String.valueOf(dataSet.get(listPosition).getCount()));
        holder.time.setText(dataSet.get(listPosition).getTime());
        holder.date.setText(dataSet.get(listPosition).getDate());
        holder.place.setText(dataSet.get(listPosition).getPlace());


    }

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

    public void countIncrease() {

    }

    public List<UserData> getList() {
        return this.dataSet;
    }

    public static class MyViewHolder extends RecyclerView.ViewHolder {


        TextView heading;
        TextView description;
        TextView countNumber;
        TextView time;
        TextView date;
        TextView place;

        public MyViewHolder(final View itemView) {
            super(itemView);

            this.countNumber = (TextView) itemView.findViewById(R.id.countId);
            this.heading = (TextView) itemView.findViewById(R.id.textViewName);
            this.description = (TextView) itemView.findViewById(R.id.textViewVersion);
            this.place = (TextView) itemView.findViewById(R.id.placeId);
            this.time = (TextView) itemView.findViewById(R.id.timeId);
            this.date = (TextView) itemView.findViewById(R.id.dateId);
            this.countNumber.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                         //i need counterNumber value here
                    Log.v("loo", "Click");
                }
            });
        }
    }
}

试试下面的代码

  this.countNumber.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
           String value=((TextView)v).getText();
                 //i need counterNumber value here
            Log.v("loo", value);
        }
    });

试试这个代码

将

countNumber

转换为

final

final this.countNumber = (TextView) itemView.findViewById(R.id.countId);

并且，从

TextView

获取值，即

countNumber

    this.countNumber.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
                 //i need counterNumber value here
            String value = this.countNumber.getText().toString().trim();
            Log.v("loo", "countNumber=="+value);
        }
    });

---

如@ramesh-r所述，如果您想从适配器的内部获取，可以使用

（（TextView）v.getText（）获取它

但是，如果您想从活动中获得价值，则需要为其创建并实现一个接口。首先在适配器中创建接口（带有注释的代码）：

可以使用（（TextView）v.getText（）获取onClick（）中的文本；
    this.countNumber.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
                 //i need counterNumber value here
            String value = this.countNumber.getText().toString().trim();
            Log.v("loo", "countNumber=="+value);
        }
    });

this.countNumber.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
               ((TextView)v).getText();
            }
        });

public class CustomAdapter extends RecyclerView.Adapter<CustomAdapter.MyViewHolder> {

  ArrayList<UserData> dataSet = new ArrayList<>();

  public CustomAdapter(ArrayList<UserData> data) {
    this.dataSet = data;
  }

  // Define listener member variable
  private static OnRecyclerViewItemClickListener mListener;

  // Define the listener interface
  public interface OnRecyclerViewItemClickListener {
    void onItemClicked(String text);
  }

  // Define the method that allows the parent activity or fragment to define the listener.
  public void setOnRecyclerViewItemClickListener(OnRecyclerViewItemClickListener listener) {
    this.mListener = listener;
  }

  @Override
  public MyViewHolder onCreateViewHolder(ViewGroup parent,
                                       int viewType) {
    ...
  }

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

    ...
  }

  ...

  public static class MyViewHolder extends RecyclerView.ViewHolder {
    ...

    public MyViewHolder(final View itemView) {
      super(itemView);

      ...

      this.countNumber.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
              // send the text to the listener, i.e Activity.
              mListener.onItemClicked(((TextView)v).getText());
            }
        });
    }
  }

  ...
}

adapter = new CustomAdapter(dbHelper.getAllIncidents());

// Interface implementation.
adapter.setOnRecyclerViewItemClickListener(new YourAdapter.OnRecyclerViewItemClickListener() {
  @Override 
  public void onItemClicked(String text) {
    Log.d(TAG, "Text is = " + text); 
  }
});

recyclerView.setAdapter(adapter);