它应该显示的数据和过滤器时，我搜索，但它没有显示任何数据。我以为我写了一些相当不错的代码，但我找不到我的错误。
我有一个模型班，有职位、公司、经验、年龄、薪水和类型。我制作了一个单独的布局xml文件。以下是firebase实时数据库结构。这是模型课。
下面是java代码

protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_showjobs);
            ref = FirebaseDatabase.getInstance().getReference("jobs");

            searchbtn = findViewById(R.id.searchjobbtn);
            searchtxt = findViewById(R.id.searchjobtxt);
            result = (RecyclerView) findViewById(R.id.results);
            result.setHasFixedSize(true);
            result.setLayoutManager(new LinearLayoutManager(this));

            searchbtn.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    String searchedText = searchtxt.getText().toString();
                    firebasesearch(searchedText);
                }
            });
        }

        private void firebasesearch(String searchtxt) {
            Query firebaseSearchQuery=ref.orderByChild("jobTitle").startAt(searchtxt).endAt(searchtxt+"\uf8ff");

            FirebaseRecyclerOptions<jobclass> options = new FirebaseRecyclerOptions.Builder<jobclass>().setQuery(firebaseSearchQuery, jobclass.class).build();

            FirebaseRecyclerAdapter<jobclass, jobviewholder> recycleradaptor = new FirebaseRecyclerAdapter<jobclass, jobviewholder>(options) {
                @Override
                protected void onBindViewHolder(@NonNull jobviewholder holder, int position, @NonNull jobclass model) {
                    holder.setDetails(model.getJobTitle(), model.getCompany(), model.getPay(), model.getType(), model.getExperience(), model.getAge());
                }

                @NonNull
                @Override
                public jobviewholder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
                    View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.listlayout, parent, false);
                    jobviewholder jv = new jobviewholder(v);
                    return jv;
                }
            };
            result.setAdapter(recycleradaptor);
            Toast.makeText(showjobs.this, "Searching", Toast.LENGTH_LONG).show();

        }
      /*  @Override
        protected void onStart() {
            super.onStart();
            FirebaseRecyclerOptions<jobclass> options = new FirebaseRecyclerOptions.Builder<jobclass>().setQuery(ref, jobclass.class).build();

            Toast.makeText(showjobs.this, "Searching", Toast.LENGTH_LONG).show();
            FirebaseRecyclerAdapter<jobclass, jobviewholder> recycleradaptor = new FirebaseRecyclerAdapter<jobclass, jobviewholder>(options) {
                @Override
                protected void onBindViewHolder(@NonNull jobviewholder holder, int position, @NonNull jobclass model) {
                    holder.setDetails(model.getJobTitle(), model.getCompany(), model.getPay(), model.getType(), model.getExperience(), model.getAge());
                }

                @NonNull
                @Override
                public jobviewholder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
                    View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.listlayout, parent, false);
                    jobviewholder jv = new jobviewholder(v);
                    return jv;
                }
            };
            result.setAdapter(recycleradaptor);
        }*/

        public class jobviewholder extends RecyclerView.ViewHolder {

            View v;

            public jobviewholder(View itemView){
                super(itemView);
                v=itemView;
            }
            public void setDetails(String jobn, String companyn, String pay, String Ag, String xreq, String jtyp){
                TextView jobtitle=findViewById(R.id.jname);
                TextView companyname=findViewById(R.id.cname);
                TextView payment=findViewById(R.id.sal);
                TextView age=findViewById(R.id.agereq);
                TextView exprequired=findViewById(R.id.reqex);
                TextView jobtype=findViewById(R.id.type);

                jobtitle.setText(jobn);
                companyname.setText(companyn);
                payment.setText(pay);
                age.setText(Ag);
                exprequired.setText(xreq);
                jobtype.setText(jtyp);
            }
        }
    }

谢谢你抽出时间。我希望有人能帮我找到问题。