recyclerview.onBindviewholder 始终处于位置 0

Question

recyclerview.onbindviewholder始终处于位置 0

public class NoteAdapter extends RecyclerView.Adapter<NoteAdapter.ViewHolder> {

    public static final int UNCOMPLETED = 0;

    public static final int COMPLETED = 1;

    public static final int HIGHTLIGHT = 2;

    public static final int HIGHTLIGHT_COMPETED = 3;

    Cursor cursor;

    Context context;

    public NoteAdapter(Context context, Cursor cursor) {

        this.context = context;

        this.cursor = cursor;

    }

    public Cursor getCursor() {

        return this.cursor;

    }

    public void setCursor(Cursor cursor) {

        this.cursor = cursor;

    }

    public Context getContext() {

        return context;

    }

    public void setContext(Context context) {

        this.context = context;

    }

    @Override

    public int getItemViewType(int position) {

        if (cursor.moveToPosition(position)) {

            cursor.move(position);

            String content = cursor.getString(cursor.getColumnIndex(DatabaseHandler.KEY_CONTENT));

            int completed = cursor.getInt(cursor.getColumnIndex(DatabaseHandler.KEY_COMPLETED));

            int hightlight = cursor.getInt(cursor.getColumnIndex(DatabaseHandler.KEY_HIGHTLIGHT));

            if (completed == 1) {

                if (hightlight == 1) {

                    return HIGHTLIGHT_COMPETED;

                }

                return COMPLETED;

            }

            if (hightlight == 1 && completed == 0) {

                return HIGHTLIGHT;

            }

            return UNCOMPLETED;

        }

        return -1;

    }

该程序不包含任何错误。当我运行程序时，它总是只显示0位置的元素，其余位置不显示。

函数getItemCount正常工作，返回 20 个元素。

英语不是我的母语，很抱歉有任何语法错误。感谢大家。

Answer 1

确保android:layout_height各种 ViewHolders 的布局（xml）文件中的父布局已设置wrap_content为而不是match_parent。