Develop Reference

How can I print out the results of this json file? (Android Retrofit2)

I want to show Json result in textview using retrofit2, but I can't get the desired result.
json
{
"rows" : [ {
"playerId" : "f8a49812eb9c3e5c8e738c3664e0ebd1",
"nickname" : "Yuichuan",
"grade" : 89
} ]
}
Model.class
public class Model {
public String playerId;
public String nickname;
public int grade;
public String getPlayerId() {
return playerId;
}
public void setPlayerId(String playerId) {
this.playerId = playerId;
}
public String getNickname() {
return nickname;
}
public void setNickname(String nickname) {
this.nickname = nickname;
}
public int getGrade() {
return grade;
}
public void setGrade(int grade) {
this.grade = grade;
}
}
PlayerModel.class
public class PlayerModel {
public List<Model> rows;
}
**RetrofitFactory.class**
public class RetrofitFactory {
private static String BASE_URL="https://api.neople.co.kr/";
public static RetrofitService create(){
Retrofit retrofit=new Retrofit.Builder().baseUrl(BASE_URL).addConverterFactory(GsonC`enter code here`onverterFactory.create()).build();
return retrofit.create(RetrofitService.class);
}
}
RetrofitService.interface
public interface RetrofitService {
#GET("cy/players/")
Call<PlayerModel> getlist(#Query("nickname") String nickname,
#Query("apikey") String apikey);
}
MainActivityt
public class MainActivity extends AppCompatActivity {
private static final String API_KEY = "8yTuVMwy2DirHl2sWaZ3C8IJLslOfTpQ";
private static final String TAG ="Main" ;
TextView textView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
textView=findViewById(R.id.test);
RetrofitService networkService=RetrofitFactory.create();
networkService.getlist("Yuichuan",API_KEY)
.enqueue(new Callback<PlayerModel>() {
#Override
public void onResponse(Call<PlayerModel> call, Response<PlayerModel> response) {
if(!response.isSuccessful()){
textView.setText(response.code());
return;
}
Log.d(TAG, "onResponse: ConfigurationListener::"+call.request().url());
}
#Override
public void onFailure(Call<PlayerModel> call, Throwable t) {
textView.setText(t.getMessage());
}
});
}
}
I want to print out these json files, but it doesn't work as I want, so I want you to give me some help or advice.It seems like a simple problem, but it is very difficult for me because I am not used to json.

The textView.setText(response.code()); give you a code of response. To get your data model you need a body of response response.body()

How do I display json to textviews?

I'm trying to display some json data to textviews. My "getTitle" getter method works fine and the data is shown in the textview widget. However when I should pass the "getDescription" getter method, it doesn't comes up for suggestion.
I would really love some help with this, or also if I'm not going about it the right way someone could point me in the right direction.
call.enqueue(new Callback<Campaign>() {
#Override
public void onResponse(Call<Campaign> call, Response<Campaign> response) {
if (response.isSuccessful()) {
String id = response.body().getId();
campaignName.setText(getTitle());
campaignDesc.setText();
} else {
Toast.makeText(StartSurveyActivity.this, "Error Retrieving Id", Toast.LENGTH_SHORT).show();
}
}
#Override
public void onFailure(Call<Campaign> call, Throwable t) {
// Log error here if request failed
Log.e(TAG, t.toString());
}
});
}
Here is my java campaign model class. Also I thought it was important to mention that my "getDescription" getter and setter is shown in a pale greyish color while the "getTitle" getter and setter is the gold looking color. Thanks for your assistance in advance.
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public String getQuestion() {
return question;
}
public void setQuestion(String question) {
this.question = question;
}
public Boolean getDeleted() {
return deleted;
}
public void setDeleted(Boolean deleted) {
this.deleted = deleted;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
public String getSurveyUrl() {
return surveyUrl;
}
public void setSurveyUrl(String surveyUrl) {
this.surveyUrl = surveyUrl;
}
public Integer getTotalResponseCount() {
return totalResponseCount;
}
public void setTotalResponseCount(Integer totalResponseCount) {
this.totalResponseCount = totalResponseCount;
}
public String getLanguageCode() {
return languageCode;
}
public void setLanguageCode(String languageCode) {
this.languageCode = languageCode;
}
public List<Question> getQuestions() {
return questions;
}
public void setQuestions(List<Question> questions) {
this.questions = questions;
}
public Date getCreated() {
return created;
}
public void setCreated(Date created) {
this.created = created;
}
public String getOrganisationLogoUrl() {
return organisationLogoUrl;
}
public void setOrganisationLogoUrl(String organisationLogoUrl) {
this.organisationLogoUrl = organisationLogoUrl;
}
public String getOrganisationName() {
return organisationName;
}
public void setOrganisationName(String organisationName) {
this.organisationName = organisationName;
}

Try below, you are calling method on response
campaignName.setText(response.body().getDescription())

The body of the response will hold the data or response object you have defined. So to call any getter or setter method of the response object you have to use body of the response for example response.body().getDescription(), response.body().getCreated(). To show description in the TextView try this
campaignDesc.setText(response.body().getDescription())

Retrofit not getting data from api

I have some api that contains JSON with partner names.
I've set up interface and pojo model. I'll post below my code.
Here is my POJO model Partner:
public class Partner {
#SerializedName("name")
#Expose
private String name;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
Now here is my interface:
public interface APIService {
#GET("Partner")
Call<List<Partner>> getPartners();
}
And here is my APIHelper:
public class APIHelper {
public static final String PARTNERS_URL = "https://part-of-url.herokuapp.com/partners.json/";
public static APIService apiService;
public static APIService getApiService() {
if (apiService == null) {
Retrofit retrofit = new Retrofit.Builder().baseUrl(PARTNERS_URL)
.addConverterFactory(GsonConverterFactory.create()).build();
apiService = retrofit.create(APIService.class);
}
return apiService;
}
}
And this is Fragment which contains Button where onClick method needs to get data from web.
public class DownloadMain extends Fragment implements Callback<Partner> {
private static final String TAG = DownloadMain.class.getSimpleName();
private Button dloadPartners;
private Call callPartners;
public DownloadMain() {}
public DownloadMain newInstance() { return new DownloadMain(); }
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.download_main, container, false);
dloadPartners = (Button) view.findViewById(R.id.downloadPartners);
dloadPartners.setOnClickListener(btnListener);
callPartners = APIHelper.getApiService().getPartners();
return view;
}
Button.OnClickListener btnListener = (new Button.OnClickListener() {
#Override
public void onClick(View v) {
callPartners.clone().enqueue(DownloadMain.this);
}
});
#Override
public void onResponse(Call call, Response response) {
if(response.body() == null) {
try {
response.errorBody().string();
} catch (IOException e) {
e.printStackTrace();
}
Toast.makeText(getActivity(), "No Partners!", Toast.LENGTH_SHORT).show();
} else {
List<String> partners = (List<String>) response.body();
Log.d(TAG, "Number of partners received: " + partners.size());
Toast.makeText(getActivity(), "Partners downloaded!", Toast.LENGTH_SHORT).show();
}
}
#Override
public void onFailure(Call call, Throwable t) {
}
}
This is all my code for getting Partners from web.
I'm getting this error on server side and can't resolve it:
No route matches [GET] "/partners.json/Partner"
QUESTION: Can someone look at this code and say what is wrong and why I'm not getting data from web and also how should I resolve this no route error?

change your get path like so
public interface APIService {
#GET("partners.json")
Call<List<Partner>> getPartners();
}
and remove that path from your base url.
public class APIHelper {
public static final String PARTNERS_URL = "https://part-of-url.herokuapp.com/";
public static APIService apiService;
public static APIService getApiService() {
if (apiService == null) {
Retrofit retrofit = new Retrofit.Builder().baseUrl(PARTNERS_URL)
.addConverterFactory(GsonConverterFactory.create()).build();
apiService = retrofit.create(APIService.class);
}
return apiService;
}
}

Rxjava : Apply treatment on members of an object

I hava a function which is returning an object containing a list from a html page :
#Override
public Observable<MediaList> getMediaListFromUrl(String url) {
return getHtml(url)
.map(new Func1<String, MediaList>() {
#Override
public MediaList call(String s) {
return interpreter.interpretMediaResultsFromHtml(s);
}
});
}
What I would like to do next is:
for(Media media : mediaList.getMedias()) {
if (media.getImageUrl().contains("couvertureAjax")) {
// fetch media.getImageUrl
// replace the image url with the result
}
}
and at the end, return the original MediaList object with the replaced image urls.
I think I should use flatmap and from somewhere, but I don't know exactly how.
MediaList.java:
import android.os.Parcel;
import android.os.Parcelable;
import java.util.List;
public class MediaList implements Parcelable {
public static final String TAG = MediaList.class.getSimpleName();
private List<Media> medias;
private String nextPageUrl;
public MediaList() {}
protected MediaList(Parcel in) {
medias = in.createTypedArrayList(Media.CREATOR);
nextPageUrl = in.readString();
}
public List<Media> getMedias() {
return medias;
}
public void setMedias(List<Media> medias) {
this.medias = medias;
}
public String getNextPageUrl() {
return nextPageUrl;
}
public void setNextPageUrl(String nextPageUrl) {
this.nextPageUrl = nextPageUrl;
}
#Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeTypedList(medias);
dest.writeString(nextPageUrl);
}
#Override
public int describeContents() {
return 0;
}
public static final Creator<MediaList> CREATOR = new Creator<MediaList>() {
#Override
public MediaList createFromParcel(Parcel in) {
return new MediaList(in);
}
#Override
public MediaList[] newArray(int size) {
return new MediaList[size];
}
};
}

As I am not having all classes that are involved here, so I have written a Rx code that would help to achieve what you want:
getHtml(url)
.flatMap(new Func1<String, Media>() {
#Override
public Media call(String s) {
// Here update code interpreter.interpretMediaResultsFromHtml(s) and make sure your return List<Media> from here
return Observable.from(interpreter.interpretMediaResultsFromHtml(s));
}
})
.map(new Func1<Media, Media>() {
#Override
public Media call(Media media) {
// Write code here to update Url in media and return it
return null; // Return updated media object from here
}
})
.toList()
.subscribe(new Action1<List<Media>>() {
#Override
public void call(List<Media> mediaList) {
// Here MediaLkist object will be your updated List<Media>
}
});
Let me know if it fix your issue or you need more details. It's definitely possible what you want to achieve via RxJava.

One way to do this :
#Override
public Observable<MediaList> getMediaList(String url) {
return getHtml(url)
.flatMap(new Func1<String, Observable<MediaList>>() {
#Override
public Observable<MediaList> call(String s) {
MediaList mediaList = interpreter.interpretMediaResultsFromHtml(s);
Observable<List<Media>> list = Observable.from(mediaList.getMedias())
.flatMap(new Func1<Media, Observable<Media>>() {
#Override
public Observable<Media> call(Media media) {
if (media.needImagePreload()) {
return getMediaLoadedImage(media.getImageUrl(), media);
} else {
return Observable.just(media);
}
}
})
.toList();
return Observable.zip(Observable.just(mediaList.getNextPageUrl()), list, new Func2<String, List<Media>, MediaList>() {
#Override
public MediaList call(String s, List<Media> medias) {
return zipMediaList(s, medias);
}
});
}
});
}
private MediaList zipMediaList(String s, List<Media> medias) {
MediaList mediaList = DefaultFactory.MediaList.constructDefaultInstance();
mediaList.setNextPageUrl(s);
mediaList.setMedias(medias);
return mediaList;
}
I think they are easier ways to do this, but it works.

Iterate through Retrofit response

I'm using Retrofit for my Android app, calling it like this:
RestAdapter restAdapter = new RestAdapter.Builder()
.setEndpoint(BASE_URL)
.build();
ApiEndpointInterface apiService = restAdapter.create(ApiEndpointInterface.class);
apiService.getFeed(9, new Callback<Post>() {
#Override
public void success(Post post, Response response) {
// loop
}
#Override
public void failure(RetrofitError retrofitError) {
retrofitError.printStackTrace();
}
});
The JSON is formatted like this:
{
"success":true,
"data":[
{
"id":"1",
"user_id":"2",
"message":"Hello, world!"
},
{
"id":"2",
"user_id":"1",
"message":"Another hello!"
}
]
}
How can I iterate through each item and, for example, print its message to console? Each item belongs to the Post model:
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class Post {
public String id;
public String userId;
public String message;
public String getMessage() {
return message;
}
}

Your Main model class look like this.
public class Post {
private String success;
private List<data> data;
public List<data> getData() {
return data;
}
}
Here is your data class.You need to create another class to retrieve json arary(For you it is data.)
public class data {
public String id;
public String userId;
public String message;
public String getMessage() {
return message;
}
}
apiService.getFeed(9, new Callback<Post>() {
#Override
public void success(Post post, Response response) {
post.getData().getPositoin(YourPosition).getMessage(); //or you can use for loop
}
#Override
public void failure(RetrofitError retrofitError) {
retrofitError.printStackTrace();
}
});