android - 微调器的 Onitemclicklistner 如何将 id 传递给 android 中的下一个微调器

Question

您好，下面的代码描述了微调器。在微调器中，我显示不同类型的建筑物名称以调用 Api。根据响应，我将建筑物的名称设置为微调器。

来自回复:身份证和姓名

现在，我的问题是用户何时从微调器中选择了任何建筑物名称。我想从微调器中获取 ID，然后将其传递给下一个微调器。

谁能帮我做一下。

   private void selectBuilding() {
        handler.postDelayed(new Runnable() {
            @Override
            public void run() {
                // Write code for your refresh logic

                progressDialog = new ProgressDialog (getActivity ());
                progressDialog.setIndeterminate(true);
                progressDialog.setMessage("Communicating...");
                progressDialog.setCanceledOnTouchOutside(false);
                progressDialog.setCancelable(false);
                progressDialog.show();
                OkHttpClient client = new OkHttpClient.Builder()
                        .connectTimeout(10, TimeUnit.SECONDS)
                        .writeTimeout(10, TimeUnit.SECONDS)
                        .readTimeout(30, TimeUnit.SECONDS)
                        .build();

                Retrofit retrofit = new Retrofit.Builder()
                        .baseUrl(API.URL_BASE)
                        .addConverterFactory(ScalarsConverterFactory.create())
                        .addConverterFactory(GsonConverterFactory.create())
                        .client (client)
                        .build();
                API service = retrofit.create (API.class);
                final Call<Managebuilding> userCall = service.getbuildinglist ();
                userCall.enqueue(new Callback<Managebuilding> () {

                    @Override
                    public void onResponse(Call <Managebuilding> call, Response <Managebuilding> response) {

                        if (response != null && response.code ( ) == 200 && response.isSuccessful ( )) {
                            Managebuilding building = response.body ();
                            String Name = null,Id;
                            String Lists=new Gson ( ).toJson (response.body ());
                                //  JSONArray jsonArray=new JSONArray ();
                               // JSONObject jsonObject = null;
                                try {
                                    JSONObject jsonObject = new JSONObject (Lists);
                                    JSONArray result = jsonObject.getJSONArray ("list");
                                    System.out.println (result);
                                    //JSONArray result = jsonArray.getJSONArray ("ID");

                                    arrayList = new ArrayList <> ( );
                                    arrayList1 = new ArrayList <> ( );
                                    for (int i = 0; i <result.length(); i++) {

                                        Id=result.getJSONObject (i).getString ("ID");

                                        Name=result.getJSONObject (i).getString ("Name");

                                        arrayList.add (Name);
                                        arrayList1.add (Id);
                                    }

                                    ArrayAdapter <String> adapter = new ArrayAdapter <String> (getContext (),android.R.layout.simple_spinner_item, arrayList);

                                    adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

                                    spinner.setAdapter(adapter);

                                } catch (JSONException e) {
                                e.printStackTrace ( );
                            }


                            progressDialog.dismiss ( );

                        } else {
                            progressDialog.dismiss ( );
                            Log.d ("Response errorBody", String.valueOf (response.errorBody ( )));
                        }

                    }


                    @Override
                    public void onFailure(Call<Managebuilding> call, Throwable t) {
                        // lv.setAdapter (adapter);
                        System.out.println("onFailure");
                        System.out.println(t.fillInStackTrace());
                        progressDialog.dismiss();
                        Toast.makeText(getActivity (), "Some error occurred -> ", Toast.LENGTH_LONG).show();;
                        // progressDialog.dismiss();



                    }

                });
            }


        }, 5000);
        return ;
    }

OnitemclickListner:

  spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener () {

            @Override
            public void onItemSelected(AdapterView<?> parent, View view,
                                       int position, long id) {
                // TODO Auto-generated method stub
                int pos=spinner.getSelectedItemPosition ();

                String ids= String.valueOf (arrayList1.get (pos));

                //String obj;

                System.out.println (ids);
            }

            @Override
            public void onNothingSelected(AdapterView<?> parent) {
                // TODO Auto-generated method stub

            }
        });

    }

Answer 1

首先创建一个模型类，如Building

public class Building{
 private String id;
 private String name:
 
 public Building(String id, String name){
  this.id = id;
  this.name = name;
 }
 
 public String getId(){
  return id;
 }
 public String getName(){
   return name;
  }
}

然后在您的 Activity 中创建一个ArrayList类型的Building，如下所示

// declear it in global scope
ArrayList<Building> buildingList;

// and initialize it in `onCreate`
buildingList = new ArrayList <> ();

并在您的 API 响应中使用此 arraylist，如下所示。

userCall.enqueue(new Callback<Managebuilding> () {

   @Override
   public void onResponse(Call <Managebuilding> call, Response <Managebuilding> response) {

         if (response != null && response.code ( ) == 200 && response.isSuccessful ( )) {
               Managebuilding building = response.body ();
                            
               String Lists=new Gson ( ).toJson (response.body ());
               //  JSONArray jsonArray=new JSONArray ();
               // JSONObject jsonObject = null;
               try {
                    JSONObject jsonObject = new JSONObject (Lists);
                    JSONArray result = jsonObject.getJSONArray ("list");
                    System.out.println (result);
                    //JSONArray result = jsonArray.getJSONArray ("ID");
                                    
                    arrayList = new ArrayList <> ();
                                    
                    for (int i = 0; i <result.length(); i++) {
                                        
                        String id=result.getJSONObject (i).getString ("ID");
                        String name =result.getJSONObject (i).getString ("Name");
                                        
                        // here you have create object of building using id and name
                        Building building = new Building(id, name)
                        buildingList.add(building);

                        arrayList.add(name);
                                        
                       }

                       ArrayAdapter <String> adapter = new ArrayAdapter <String> (getContext (),android.R.layout.simple_spinner_item, arrayList);

                       adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

                       spinner.setAdapter(adapter);

                    }catch (JSONException e) {
                         e.printStackTrace ( );
                     }


                   progressDialog.dismiss ( );
               } else {
                    progressDialog.dismiss ( );
                    Log.d ("Response errorBody", String.valueOf (response.errorBody ( )));
                 }

              }


                    @Override
                    public void onFailure(Call<Managebuilding> call, Throwable t) {
                        // lv.setAdapter (adapter);
                        System.out.println("onFailure");
                        System.out.println(t.fillInStackTrace());
                        progressDialog.dismiss();
                        Toast.makeText(getActivity (), "Some error occurred -> ", Toast.LENGTH_LONG).show();;
                        // progressDialog.dismiss();



                    }

                });
            }

现在您必须修改您的 setOnItemSelectedListener，如下所示。

spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener () {

            @Override
            public void onItemSelected(AdapterView<?> parent, View view,
                                       int position, long id) {
                // here you can retrive you building info by positon
                Building building = buildingList.get(position)
                
                 String id = building.getId();
                 String name = building.getName();
                 
                // Now you can use your id or name to do whatever you want.
                System.out.println (id);
                System.out.println (name);
            }

            @Override
            public void onNothingSelected(AdapterView<?> parent) {
                // TODO Auto-generated method stub

            }
        });

    }