How to add the json response into spinner in android using retrofit?

问题

In our project we don't hard code the Label and dropdown, we assign the value to Label from JSON. I don't understand how to assign the gender array to dropdown.
Here is the response getting from URL

{
    "statusCode": "200",
    "statusMessage": "SUCCESS",
    "meetmeConfig": {
        "id": "bb52dc0f-29d0-4079-99c7-a07c8045a829",
        "moduleName": "MeetMe",
        "createdDate": 1523962430721,
        "configContent": {
            "trackingOptions": [
                {
                    "optionName": "Before the meet",
                    "isTimeRequired": true,
                    "trackingTime": [
                        5,
                        10,
                        15
                    ],
                    "isDeleted": false
                },
                {
                    "optionName": "After the meet",
                    "isTimeRequired": true,
                    "trackingTime": [
                        5,
                        10,
                        15
                    ],
                    "isDeleted": false
                },
                {
                    "optionName": "At the start",
                    "isTimeRequired": false,
                    "trackingTime": [],
                    "isDeleted": false
                },
                {
                    "optionName": "Never",
                    "isTimeRequired": false,
                    "trackingTime": [],
                    "isDeleted": false
                }
            ],
            "numberOfParticipants": 8,
            "mapResetTimeInterval": 30,
            "meetingTrackableTime": 3600,
            "addressTypes": [
                "Home",
                "Work"
            ],
            "transportModes": [
                "Walking",
                "Driving"
            ],
            "gender": [
                "Male",
                "Female",
                "Trans-Female",
                "Bi-Gender",
                "Non-Binary",
                "Gender nonconfirming",
                "Undisclosed",
                "Rather not say"
            ],
            "toastDelayTimeForPulse": 3,
            "syncToastMaxTimeInterval": 300,
            "syncToastThirdTimeInterval": 180,
            "firstTimeInterval": 1,
            "secondTimeInterval": 2,
            "meetmeSearchContactTimeInterval": 2,
            "signupToastDelayTime": 4,
            "signupToastdelatimebysix": 6,
            "signupToastDelayMedium": 5,
            "profileToastDelayTime": 4,
            "profileToastDelatimebysix": 6,
            "languages": [
                "English",
                "Spanish",
                "Marathi",
                "Hindi",
                "Bengali",
                "French",
                "Arabic",
                "German",
                "Italian",
                "Dutch",
                "Japanese",
                "Russia",
                "Korean"
            ]
        }
    }
}

I want to use gender array getting from response and added to a Spinner which is in a fragment.
Here is the code in onResponse method.

heroList =  response.body();   
data = new ArrayList<>(Arrays.asList(heroList));                                                

Log.d("Data","Datarecevied:"+heroList.getMeetmeConfig().getConfigContent().getGender());

How can we do that?

回答1:

List anyList = heroList.getMeetmeConfig().getConfigContent().getGender()

Spinner spinner = (Spinner) findViewById(R.id.msSpinnerID);

ArrayAdapter<String> adp = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item, anyList);

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

spinner.setAdapter(adp);

If you want show on Dialog

AlertDialog.Builder builderSingle = new AlertDialog.Builder(DialogActivity.this);
builderSingle.setIcon(R.drawable.ic_launcher);
builderSingle.setTitle("Select One Name:-");
final ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(DialogActivity.this, android.R.layout.select_dialog_singlechoice);
  List anyList = heroList.getMeetmeConfig().getConfigContent().getGender()
for(gender : anyList)
{
arrayAdapter.add(gender)
}
builderSingle.setNegativeButton("cancel", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                dialog.dismiss();
            }
        });
builderSingle.setAdapter(arrayAdapter, new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                String strName = arrayAdapter.getItem(which);
                Log.e("My Selected Gender", strName)
       }
        });
builderSingle.show();

回答2:

Once you have your JSON Response, there is an Android Library called Ason found here https://android-arsenal.com/details/1/5313

You can use the libary to fetch the array that you would want to use on your spinner way easier. Its a wrapper of org.json in android.

So your array will be constructed as follows:

Ason ason = new Ason(urlResponse);
AsonArray genderArray = ason.getJsonArray('meetmeConfig.configContent.gender')

//then u convert the genderArray into an array or ArrayList thats spinners use
ArrayList<String> spinnerItems = new ArrayList();
for (Ason gender : genderArray){
    spinnerItems.add(gender.toString());
}

use the spinnerItems for the spinner adapter

回答3:

Just Try this code and your problem will be solved.Thank you

ArrayAdapter<String> genderAdapter;
Spinner spin_gender = findViewById(R.id.spin_gender);

heroList =  response.body();   
data = new ArrayList<>(Arrays.asList(heroList));                                                

String[] genderArray = heroList.getMeetmeConfig().getConfigContent().getGender()

genderAdapter = new ArrayAdapter<String>(this, R.layout.label, genderArray);
spin_gender.setAdapter(genderAdapter);

回答4:

 AppCompatSpinner spinner;
 spinner = (AppCompatSpinner) findViewById(R.id.spinner);
 ArrayList<String> categoryDropDownItems = new ArrayList<String>();

In Your Response

categoryDropDownItems.add("<Set Title if you want>");

 //Array Response from Server
 if (response != null) {
     if (response.length() > 0) {
         for (int i = 0; i < response.length(); i++) {
             try {
                 JSONObject jsonObject = response.getJSONObject(i);
                 String dropDownDisplayCategoryName = jsonObject.getString("<YOUR STRIN FROM JSON>");                  
                 categoryDropDownItems.add(dropDownDisplayCategoryName);
             } catch (JSONException je) {
                 return null;
             }
         }
      } else {
          return null;
      }
 }

//For Set Array Data in Spinner

ArrayAdapter<String> adapter = new ArrayAdapter<String>(getActivity(), R.layout.spinner_item, categoryDropDownItems);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinner.setAdapter(adapter);
spinner.setSelection(selection);

If you want to pass data from Activity to Fragment you can Use

Fragment fragment = new YourFragmentName();
Bundle bundle = new Bundle();
bundle.putString("RESPONSE",<Your Response as a String>);
fragment.setArguments(bundle);

And Get Data in Fragment like below

String responseData = getArguments().getString("RESPONSE");

Now you can convert your object in JSON and from JSON get Spinner data and use above code for Add data in ArrayList and set to Spinner.

来源：https://stackoverflow.com/questions/52566068/how-to-add-the-json-response-into-spinner-in-android-using-retrofit