How to Add the Json Response into Spinner in Android Using Retrofit

How to show response.body form from retrofit in a spinner

After the response is fully done you should be able to set the adapter with the new items.

@Override
public void onResponse(Call<List<Plant>> call, Response<List<Plant>> response) {
       for (Plant p : response.body()) {
            plantasInvasorasNombre.add(p.getName());
        }
        ArrayAdapter<String> adapter = new ArrayAdapter<>(context,android.R.layout.simple_spinner_item,plantasInvasorasNombre);
        adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        spinner.setAdapter(adapter);             
}

How to retrieve 2 values using retrofit with spinner

Don't provide i-1. Your index also start from 0 but when you try to select baru it takes position 0 - 1 = -1. So just provide i which is index of baru in ArrayList.

spinnerProvinsi.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
    @Override
    public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {
        int IDProvinces = getProvincesIDList.get(i);
        Toast.makeText(getContext(), "ID Province : " + IDProvinces, Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onNothingSelected(AdapterView<?> adapterView) {

    }
});

Dynamically populating spinner using Retrofit?

first create theretrofitapi interface

/**
 * reCreated by goodlife on 1/11/2016.
 */
import java.util.List;


import retrofit.Callback;
import retrofit.client.Response;
import retrofit.http.Field;
import retrofit.http.FormUrlEncoded;
import retrofit.http.GET;
import retrofit.http.POST;

/**
 * Created by Belal on 11/5/2015.
 */
public interface RetrofitInternetApi {

    //@FormUrlEncoded, we have to write this if we want to send post data to the server.
    //@POST, because we are using an HTTP Post request we have written this.
    // Inside it we have the URL of the script that will be receiving the post request.
    // Note that the URL is excluding the root URL. And we have defined the root URL  in our MainActivity.
    //@Field(“key”) String variable inside key we have to write what we have written inside $_POST[‘key’] in our script.
    // And we have to specify it for all the values we are going to send.

    //Callback<Response> callback it is also inside the retrofit library. It will receive the output from the server.

    //But this is only an interface and the method is abstract.
    //We will define the method inside fetchDepartmentName() method that is declared inside MainActivity.java.

    @GET("/getDepartmentName.php")
    public void getDepartmentName(Callback<List<DepartmentNoRealm>> response);

}

then create the function

  private void fetchDepartmentName(){
//Creating a rest adapter
        RestAdapter restAdapter = new RestAdapter.Builder()
                .setEndpoint(ROOT_URL)
                .build();

        //Creating an object of our api interface
        RetrofitInternetApi retrofitInternetApi = restAdapter.create(RetrofitInternetApi.class);
            //While the app fetched data we are displaying a progress dialog
            final ProgressDialog loading = ProgressDialog.show(getActivity(), "Fetching Data", "Please wait...", false, false);



            //Defining the method
            retrofitInternetApi.getDepartmentName(new Callback<List<DepartmentNoRealm>>() {
                @Override
                public void success(List<DepartmentNoRealm> list, Response response) {
                    //Dismissing the loading progressbar
                    loading.dismiss();
                    Log.d("JSON  LIST",list.toString());
                    //Storing the data in our list
                    departmentNoRealmList = list;

                    //Calling a method to show the list
                      showListinSpinner();            }

                @Override
                public void failure(RetrofitError error) {
                    //you can handle the errors here
                }
            });
        }

then create a class model

package myafya.safaricom.co.ke.myafya.model.realm;

/**
 * Created by 001557 on 1/13/2016.
 */
public class DepartmentNoRealm {
    public int departmentID;
    public String departmentName;
    public String departmentURLimage;

    public int getDepartmentID() {
        return departmentID;
    }

    public void setDepartmentID(int departmentID) {
        this.departmentID = departmentID;
    }

    public String getDepartmentName() {
        return departmentName;
    }

    public void setDepartmentName(String departmentName) {
        this.departmentName = departmentName;
    }

    public String getDepartmentURLimage() {
        return departmentURLimage;
    }

    public void setDepartmentURLimage(String departmentURLimage) {
        this.departmentURLimage = departmentURLimage;
    }
}

now the code showList in Spinner

//Our method to show list
    private void showListinSpinner(){
        //String array to store all the book names
        String[] items = new String[departmentNoRealmList.size()];

        //Traversing through the whole list to get all the names
        for(int i=0; i<departmentNoRealmList.size(); i++){
            //Storing names to string array
            items[i] = departmentNoRealmList.get(i).getDepartmentName();
        }

        //Spinner spinner = (Spinner) findViewById(R.id.spinner1);
        ArrayAdapter<String> adapter;
        adapter = new ArrayAdapter<String>(getActivity(), android.R.layout.simple_list_item_1, items);
        //setting adapter to spinner
        spinnerDepartments.setAdapter(adapter);
        //Creating an array adapter for list view

    }

Then SHARE IT AND MAKE IT EASY

MY JSON WAS

[
  {
    "departmentID": "1",
    "departmentName": "Enterprise Business Unit (EBU)",
    "departmentURLimage": "https://encrypted-tbn1.gstatic.com/images?q=tbn:ANd9GcSKOZmGNAA08NbHwRJrloAouWqs6r4x7BGXY4k-ULWiHuPEobHI"
  },
  {
    "departmentID": "2",
    "departmentName": "Consumer Business Unit (CBU)",
    "departmentURLimage": "https://encrypted-tbn1.gstatic.com/images?q=tbn:ANd9GcQ0IAFhZ52KiG_0ck5VbBxweZWf_MEA9eRmgHAEr6CG-rUG_a2QEQ"
  }
]

How to Retrieve 2 Values from Spinner with Retrofit2 on Android

In your response :

private void initSpinnerType(){
    RetrofitInterface api = RetrofitClient.getClient().create(RetrofitInterface.class);
    Call<LeaveTypeResponse> call = api.getDataPermit();
    call.enqueue(new Callback<LeaveTypeResponse>() {
        @Override
        public void onResponse(Call<LeaveTypeResponse> call, Response<LeaveTypeResponse> response) {
            if (response.isSuccessful()) {
                List<LeaveType> leaveTypeItems = response.body().getResult();
                for (int i = 0; i < leaveTypeItems.size(); i++){
                    String Code = leaveTypeItems.get(i).getCode(); // I want to show this when Selected
                    String leaveType = leaveTypeItems.get(i).getType();
                    listSpinner.add(leaveType);
                    // Add your code into an separate ArrayList
                    listCode.add(code);
                }
                listSpinner.add(0, "- SELECT TYPE -");

                adapter = new ArrayAdapter<>(context, android.R.layout.simple_spinner_item, listSpinner);
                adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
                leaveType.setAdapter(adapter);

            } else {
                Toast.makeText(context, "FAILED", Toast.LENGTH_SHORT).show();
            }
        }
        @Override
        public void onFailure(Call<LeaveTypeResponse> call, Throwable t) {
            t.printStackTrace();
            Toast.makeText(context, "CAN'T CONNECT", Toast.LENGTH_SHORT).show();
        }
    });
}

Your Listener :

leaveType.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
    @Override
    public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
        // position -1 because in listspinner we add an extra String at 0 index
        String selectedCode=listCode.get(--position);
        String selected = parent.getItemAtPosition(position).toString();
        Toast.makeText(context, "Choose " + selectedCode, Toast.LENGTH_SHORT).show();
    }
    @Override
    public void onNothingSelected(AdapterView<?> parent) {
    }
});

Populating Spinners using Retrofit 1.9?

Below, is a sample for setting the spinner

Spinner spinner = (Spinner) findViewById(R.id.spinner1);
ArrayAdapter<String> adapter;
List<String> data;

data = new ArrayList<>();
for (int i = 0; i < 20; i++)
        data.add("Data " + (i + 1));

adapter = new ArrayAdapter<>(this, android.R.layout.simple_list_item_1, data);
spinner.setAdapter(adapter);

Here data is a dummy data , in your case it will be dummy data.

populate spinner with retrofit and moshi

Here is code for same, I modified and integrate in your code only:

"MainActivity.kt" class:

 class MainActivity : AppCompatActivity() {

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_main)

    var spinner: Spinner = findViewById(R.id.spinner)

    val task = object : AsyncTask<Void, Void, Response<List<ProductTypeDataResponse>>>() {
        override fun doInBackground(vararg params: Void): Response<List<ProductTypeDataResponse>> {

            val typeAPI = RestAPI()
            val callResponse = typeAPI.getNews()
            val response = callResponse.execute()

            return response

        }

        override fun onPostExecute(response: Response<List<ProductTypeDataResponse>>) {
            if (response.isSuccessful) {
                val news: List<ProductTypeDataResponse>? = response.body()

                var adapter: SpinnerAdapter = SpinnerAdapter(this@MainActivity, news!!);

                spinner.adapter=adapter


               }
        }
    }.execute()
}
}

Now Layout "activity_main":

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.ankitpatidar.checkkotlin.MainActivity">

<Spinner
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:id="@+id/spinner"></Spinner>
</LinearLayout>

Now Spinner Adapter as "SpinnerAdapter":

 class SpinnerAdapter internal constructor(internal var context: Context, internal var list: List<ProductTypeDataResponse>) : BaseAdapter() {
override fun getCount(): Int {
    return list.size
}

override fun getItem(i: Int): Any? {
    return null
}

override fun getItemId(i: Int): Long {
    return 0
}

override fun getView(i: Int, view: View?, viewGroup: ViewGroup): View {
    var view = view
    if (view == null) {
        val inflater = LayoutInflater.from(context)

        view = inflater.inflate(R.layout.item, viewGroup, false)
    }

    val textView = view!!.findViewById<TextView>(R.id.textView)

    textView.text = list[i].productType + " " + list[i].readable

    return textView

}
}

Spinner item layout as "item":

 <?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent"
android:layout_height="match_parent">

<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/textView"/>

</LinearLayout>

Now some changes in your existing files:

"ApiModel.kt":

 class TypeDataResponse(
    val children: List<ProductTypeChildrenResponse>
 )

 class ProductTypeChildrenResponse(val data: ProductTypeDataResponse)

 class ProductTypeDataResponse(
    val productType: String,
    val readable: String
 )

"RestAPI.kt"

 class RestAPI() {

private val tigaerApi: TigaerApi

init {
    val retrofit = Retrofit.Builder()
            .baseUrl("http://app.tigaer.id/laravel/")
            .addConverterFactory(MoshiConverterFactory.create())
            .build()

    tigaerApi = retrofit.create(TigaerApi::class.java)
}

fun getNews(): Call<List<ProductTypeDataResponse>> {
    return tigaerApi.getTop()
}
}

Hence it will work for you.

Populate spinner [custom adapter] retrofit

Ok, so to implement this you need first of all to create you xml view, for example:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <TextView
        android:id="@+id/name_text_view"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
</LinearLayout>

Now in adapter in function getView() you need to inflate it and bind the TextView:

convertView = LayoutInflater.from(context).
                        inflate(R.layout.layout_list_view_row_items, parent, false);
TextView nameTextView = (TextView) convertView.findViewById(R.id.name_text_view);


//and now get the SpinnerArrayObject by position


 SpinnerArrayObject currentObject = spinnerArrayObjects.get(position);
    nameTextView.setText(currentObject.getName());

    return convertView;

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