I am again trying to use TMBD api. I am using a recyclerview to map the data into a list.But the response I am getting from the retrofit response is null.
Main Activity:
public class MainActivity extends AppCompatActivity {
public final static String BASE_URL="https://api.themoviedb.org";
public final static String apiKey="<ApiKey>";
public final static String language="en-US";
public final static String TAG="tag";
#BindView(R.id.recyclerView)
RecyclerView movieList;
DisplayAdapter adapter;
MovieResponse result;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ButterKnife.bind(this);
Retrofit retrofit=new Retrofit.Builder()
.baseUrl(BASE_URL)
.addConverterFactory(GsonConverterFactory.create())
.build();
ApiInterface apiInterface=retrofit.create(ApiInterface.class);
apiInterface.getMovies(apiKey,language,1)
.enqueue(new Callback<MovieResponse>() {
#Override
public void onResponse(Call<MovieResponse> call, Response<MovieResponse> response) {
if(response.isSuccessful())
{
result=response.body();
Log.e(TAG, "onCreate: "+result );
}
}
#Override
public void onFailure(Call<MovieResponse> call, Throwable t) { }
});
Log.e(TAG, "onCreate: "+result );
adapter=new DisplayAdapter(getApplicationContext(),result);
RecyclerView.LayoutManager layoutManager=new GridLayoutManager(getApplicationContext(),1);
movieList.setLayoutManager(layoutManager);
movieList.setAdapter(adapter);
}
}
Response Class:
public class MovieResponse {
private int page;
private int total_results;
private int total_pages;
private List<ResultsBean> results;
public int getPage() {
return page;
}
public void setPage(int page) {
this.page = page;
}
public int getTotal_results() {
return total_results;
}
public void setTotal_results(int total_results) {
this.total_results = total_results;
}
public int getTotal_pages() {
return total_pages;
}
public void setTotal_pages(int total_pages) {
this.total_pages = total_pages;
}
public List<ResultsBean> getResults() {
return results;
}
public void setResults(List<ResultsBean> results) {
this.results = results;
}
public static class ResultsBean {
private double popularity;
private int vote_count;
private boolean video;
private String poster_path;
private int id;
private boolean adult;
private String backdrop_path;
private String original_language;
private String original_title;
private String title;
private double vote_average;
private String overview;
private String release_date;
private List<Integer> genre_ids;
public double getPopularity() {
return popularity;
}
public void setPopularity(double popularity) {
this.popularity = popularity;
}
public int getVote_count() {
return vote_count;
}
public void setVote_count(int vote_count) {
this.vote_count = vote_count;
}
public boolean isVideo() {
return video;
}
public void setVideo(boolean video) {
this.video = video;
}
public String getPoster_path() {
return poster_path;
}
public void setPoster_path(String poster_path) {
this.poster_path = poster_path;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public boolean isAdult() {
return adult;
}
public void setAdult(boolean adult) {
this.adult = adult;
}
public String getBackdrop_path() {
return backdrop_path;
}
public void setBackdrop_path(String backdrop_path) {
this.backdrop_path = backdrop_path;
}
public String getOriginal_language() {
return original_language;
}
public void setOriginal_language(String original_language) {
this.original_language = original_language;
}
public String getOriginal_title() {
return original_title;
}
public void setOriginal_title(String original_title) {
this.original_title = original_title;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public double getVote_average() {
return vote_average;
}
public void setVote_average(double vote_average) {
this.vote_average = vote_average;
}
public String getOverview() {
return overview;
}
public void setOverview(String overview) {
this.overview = overview;
}
public String getRelease_date() {
return release_date;
}
public void setRelease_date(String release_date) {
this.release_date = release_date;
}
public List<Integer> getGenre_ids() {
return genre_ids;
}
public void setGenre_ids(List<Integer> genre_ids) {
this.genre_ids = genre_ids;
}
}
}
The Api Interface:
public interface ApiInterface {
#GET("3/movie/popular")
Call<MovieResponse> getMovies(
#Query("api_key") String apiKey,
#Query("language")String language,
#Query("page")int page
);
}
I am learning the concept of api calling. I dont understand why the response is null. If anybody could explai the reason it will be very helpfull.
This can be several things from what you posted.
It can be that the Java models don't match the JSON. You'd have to double check this.
It can be that you're getting an error, in which case retrofit does not have a response.body(), but rather a response.errorBody(). You can check this by debugging and checking response.erroeBody().string().
Or it could to be a classic example of asynch behaviour being handled like it's synchronous.
adapter=new DisplayAdapter(getApplicationContext(),result);
In this case you're using result, but it's assigned inside the retrofit callback which most likely finished after you create the adapter and hence result is still null.
You can move the creation of the adapter and setting it to the list inside the callback:
public void onResponse(Call<MovieResponse> call, Response<MovieResponse> response) {
if(response.isSuccessful())
{
result=response.body();
Log.e(TAG, "onCreate: "+result );
adapter=new DisplayAdapter(getApplicationContext(),result);
RecyclerView.LayoutManager layoutManager=new GridLayoutManager(getApplicationContext(),1);
movieList.setLayoutManager(layoutManager);
movieList.setAdapter(adapter);
}
}
These are the only things that come to mind. Hope it helps.
EDIT
After taking a look at the github project, the only thing I found that is crashing the app is inside DisplayAdapter.java line 44:
holder.movieRating.setText((int) listOfMovies.getResults().get(position).getVote_average());
When you call setText that accepts an int you are in fact calling a method that will look in your strings.xml for a string with the id equal to the int you passed in. In this case, you are passing the vote average as an int. I'm guessing that what you want is to display the vote average, so the solution is to convert the double vote average to a string. This can easily be achieved with String.valueOf:
holder.movieRating.setText(String.valueOf(listOfMovies.getResults().get(position).getVote_average()));
Perhaps the most interesting bit is in the log message android.content.res.Resources$NotFoundException: String resource ID #0x7. This is thrown when trying to look for the string that doesn't exist.
Related
I'm new to Retrofit, I have an activity hosting 3 fragments for a weather app. My FirstFragment is where the
current weather data will be displayed using OpenWeatherMap One call API https://openweathermap.org/api/one-call-api. I noticed that retrofit request calls cannot be made on the fragment class, so
I tried using my Activity class and everything worked properly except these following lines:
call.enqueue(new Callback<WeatherResponse>() {
#Override
public void onResponse(#NonNull Call < WeatherResponse > call, #NonNull Response < WeatherResponse > response) {
if (response.code() == 200) {
WeatherResponse weatherResponse = response.body();
assert weatherResponse != null;
time_zone.setText(response.body().getTimezone());
time_field.setText(response.body().getCurrent.getDt());
current_temp.setText(response.body().getCurrent().getTemp()+" ℃");
current_output.setText(response.body().getCurrent().getWeather().getDescription);
rise_time.setText(response.body().getCurrent().getSunrise()+" AM");
set_time.setText(response.body().getCurrent().getSunset()+" PM");
temp_out.setText(response.body().getCurrent().getTemp()+" ℃");
Press_out.setText(response.body().getCurrent().getPressure()+" hpa");
Humid_out.setText(response.body().getCurrent().getHumidity()+" %");
Ws_out.setText(response.body().getCurrent).getWind_speed()+" Km/h");
Visi_out.setText(response.body().getCurrent().getVisibility()+" m");
UV_out.setText(response.body().getCurrent().getUvi());
showing error Cannot resolve Symbol "response". What can be done to fix it, please?
My full code:
HomeActivity.java
public class HomeActivity extends AppCompatActivity {
public static String BaseUrl = "http://api.openweathermap.org/";
public static String AppId = "";
public static String lat = "9.0574";
public static String lon = "7.4898";
// User Timezone name, current time, current temperature, current condition, sunrise, sunset, temperature, pressure, humidity, wind_speed, visibility, UV Index
TextView time_zone, time_field, current_temp, current_output, rise_time, set_time, temp_out, Press_out, Humid_out, Ws_out, Visi_out, UV_out;
ConstraintLayout constraintLayout;
public static int count=0;
int[] drawable =new int[]{R.drawable.dubai,R.drawable.central_bank_of_nigeria,R.drawable.eiffel_tower,R.drawable.hong_kong,R.drawable.statue_of_liberty};
Timer _t;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
time_zone = findViewById(R.id.textView9);
time_field = findViewById(R.id.textView4);
current_temp = findViewById(R.id.textView10);
current_output = findViewById(R.id.textView11);
rise_time = findViewById(R.id.textView25);
set_time = findViewById(R.id.textView26);
temp_out = findViewById(R.id.textView28);
Press_out = findViewById(R.id.textView29);
Humid_out = findViewById(R.id.textView30);
Ws_out = findViewById(R.id.textView33);
Visi_out = findViewById(R.id.textView34);
UV_out = findViewById(R.id.textView35);
BottomNavigationView bottomNavigationView = findViewById(R.id.bottomNavigationView);
NavController navController = Navigation.findNavController(this, R.id.fragment);
NavigationUI.setupWithNavController(bottomNavigationView, navController);
constraintLayout = findViewById(R.id.layout);
constraintLayout.setBackgroundResource(R.drawable.dubai);
_t = new Timer();
_t.scheduleAtFixedRate(new TimerTask() {
#Override
public void run() {
runOnUiThread(new Runnable() { // run on ui thread
#Override
public void run() {
if (count < drawable.length) {
constraintLayout.setBackgroundResource(drawable[count]);
count = (count + 1) % drawable.length;
}
}
});
}
}, 5000, 5000);
}
Retrofit retrofit = new Retrofit.Builder()
.baseUrl(BaseUrl)
.addConverterFactory(GsonConverterFactory.create())
.build();
WeatherService service = retrofit.create(WeatherService.class);
Call<WeatherResponse> call = service.getCurrentWeatherData(lat, lon, AppId);
call.enqueue(new Callback<WeatherResponse>() {
#Override
public void onResponse(#NonNull Call < WeatherResponse > call, #NonNull Response < WeatherResponse > response) {
if (response.code() == 200) {
WeatherResponse weatherResponse = response.body();
assert weatherResponse != null;
time_zone.setText(response.body().getTimezone());
time_field.setText(response.body().getCurrent.getDt());
current_temp.setText(response.body().getCurrent().getTemp()+" ℃");
current_output.setText(response.body().getCurrent().getWeather().getDescription);
rise_time.setText(response.body().getCurrent().getSunrise()+" AM");
set_time.setText(response.body().getCurrent().getSunset()+" PM");
temp_out.setText(response.body().getCurrent().getTemp()+" ℃");
Press_out.setText(response.body().getCurrent().getPressure()+" hpa");
Humid_out.setText(response.body().getCurrent().getHumidity()+" %");
Ws_out.setText(response.body().getCurrent).getWind_speed()+" Km/h");
Visi_out.setText(response.body().getCurrent().getVisibility()+" m");
UV_out.setText(response.body().getCurrent().getUvi());
}
}
}
}
WeatherService.java
public interface WeatherService {
#GET("data/2.5/weather?")
Call<WeatherResponse> getCurrentWeatherData(#Query("lat") String lat, #Query("lon") String lon, #Query("APPID") String app_id);
}
JSON Response:
{
"lat":9.08,
"lon":7.4,
"timezone":"Africa/Lagos",
"timezone_offset":3600,
"current":{
"dt":1609157237,
"sunrise":1609134244,
"sunset":1609175993,
"temp":305.15,
"feels_like":304.63,
"pressure":1012,
"humidity":29,
"dew_point":284.9,
"uvi":8.32,
"clouds":82,
"visibility":5000,
"wind_speed":1.5,
"wind_deg":200,
"weather":[
{
"id":721,
"main":"Haze",
"description":"haze",
"icon":"50d"
}
]
}
I converted my JSON to GSON using http://www.jsonschema2pojo.org/
Current.java:
public class Current {
#SerializedName("dt")
#Expose
private Integer dt;
#SerializedName("sunrise")
#Expose
private Integer sunrise;
#SerializedName("sunset")
#Expose
private Integer sunset;
#SerializedName("temp")
#Expose
private Double temp;
#SerializedName("feels_like")
#Expose
private Double feelsLike;
#SerializedName("pressure")
#Expose
private Integer pressure;
#SerializedName("humidity")
#Expose
private Integer humidity;
#SerializedName("dew_point")
#Expose
private Double dewPoint;
#SerializedName("uvi")
#Expose
private Double uvi;
#SerializedName("clouds")
#Expose
private Integer clouds;
#SerializedName("visibility")
#Expose
private Integer visibility;
#SerializedName("wind_speed")
#Expose
private Double windSpeed;
#SerializedName("wind_deg")
#Expose
private Integer windDeg;
#SerializedName("weather")
#Expose
private List<Weather> weather = null;
public Integer getDt() {
return dt;
}
public void setDt(Integer dt) {
this.dt = dt;
}
public Integer getSunrise() {
return sunrise;
}
public void setSunrise(Integer sunrise) {
this.sunrise = sunrise;
}
public Integer getSunset() {
return sunset;
}
public void setSunset(Integer sunset) {
this.sunset = sunset;
}
public Double getTemp() {
return temp;
}
public void setTemp(Double temp) {
this.temp = temp;
}
public Double getFeelsLike() {
return feelsLike;
}
public void setFeelsLike(Double feelsLike) {
this.feelsLike = feelsLike;
}
public Integer getPressure() {
return pressure;
}
public void setPressure(Integer pressure) {
this.pressure = pressure;
}
public Integer getHumidity() {
return humidity;
}
public void setHumidity(Integer humidity) {
this.humidity = humidity;
}
public Double getDewPoint() {
return dewPoint;
}
public void setDewPoint(Double dewPoint) {
this.dewPoint = dewPoint;
}
public Double getUvi() {
return uvi;
}
public void setUvi(Double uvi) {
this.uvi = uvi;
}
public Integer getClouds() {
return clouds;
}
public void setClouds(Integer clouds) {
this.clouds = clouds;
}
public Integer getVisibility() {
return visibility;
}
public void setVisibility(Integer visibility) {
this.visibility = visibility;
}
public Double getWindSpeed() {
return windSpeed;
}
public void setWindSpeed(Double windSpeed) {
this.windSpeed = windSpeed;
}
public Integer getWindDeg() {
return windDeg;
}
public void setWindDeg(Integer windDeg) {
this.windDeg = windDeg;
}
public List<Weather> getWeather() {
return weather;
}
public void setWeather(List<Weather> weather) {
this.weather = weather;
}
}
Weather.java:
public class Weather {
#SerializedName("id")
#Expose
private Integer id;
#SerializedName("main")
#Expose
private String main;
#SerializedName("description")
#Expose
private String description;
#SerializedName("icon")
#Expose
private String icon;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getMain() {
return main;
}
public void setMain(String main) {
this.main = main;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public String getIcon() {
return icon;
}
public void setIcon(String icon) {
this.icon = icon;
}
}
WeatherResponse.java:
public class WeatherResponse {
#SerializedName("lat")
#Expose
private Double lat;
#SerializedName("lon")
#Expose
private Double lon;
#SerializedName("timezone")
#Expose
private String timezone;
#SerializedName("timezone_offset")
#Expose
private Integer timezoneOffset;
#SerializedName("current")
#Expose
private Current current;
public Double getLat() {
return lat;
}
public void setLat(Double lat) {
this.lat = lat;
}
public Double getLon() {
return lon;
}
public void setLon(Double lon) {
this.lon = lon;
}
public String getTimezone() {
return timezone;
}
public void setTimezone(String timezone) {
this.timezone = timezone;
}
public Integer getTimezoneOffset() {
return timezoneOffset;
}
public void setTimezoneOffset(Integer timezoneOffset) {
this.timezoneOffset = timezoneOffset;
}
public Current getCurrent() {
return current;
}
public void setCurrent(Current current) {
this.current = current;
}
}
I also want to make my fragment class make use of the Activity data, how to do that, please?
This piece of code is outside of onCreate
Retrofit retrofit = new Retrofit.Builder()
.baseUrl(BaseUrl)
.addConverterFactory(GsonConverterFactory.create())
.build();
WeatherService service = retrofit.create(WeatherService.class);
Call < WeatherResponse > call = service.getCurrentWeatherData(lat, lon, AppId);
// .... etc.
It needs to be inside a method; onCreate for example.
You can only have declarations and default assignments in the class body. Any other code must be within a method body.
You probably closed the brace of onCreate to early accidentally.
Note: This also explains why you get so many errors. You just have so many lines of code which are, to the compiler, totally out of place and thus marks everything as incorrect.
It might be rather something alike this:
#Override
public void onResponse(#NonNull Call<WeatherResponse> call, #NonNull Response <WeatherResponse> response) {
if (response.code() == 200) {
WeatherResponse weatherResponse = response.body();
time_zone.setText(weatherResponse.getTimezone());
time_field.setText(weatherResponse.getCurrent.getDt());
current_temp.setText(weatherResponse.getCurrent().getTemp()+" ℃");
rise_time.setText(weatherResponse.getCurrent().getSunrise()+" AM");
set_time.setText(weatherResponse.getCurrent().getSunset()+" PM");
temp_out.setText(weatherResponse.getCurrent().getTemp()+" ℃");
Press_out.setText(weatherResponse.getCurrent().getPressure()+" hpa");
Humid_out.setText(weatherResponse.getCurrent().getHumidity()+" %");
Ws_out.setText(weatherResponse.getCurrent).getWind_speed()+" Km/h");
Visi_out.setText(weatherResponse.getCurrent().getVisibility()+" m");
UV_out.setText(weatherResponse.getCurrent().getUvi());
}
}
Make sure to have class WeatherResponse and Current properly annotated.
That ? in the URL is useless.
make sure your enqueue() looks like this
call.enqueue(new Callback<WeatherResponse>() {
#Override
public void onResponse(#NotNull Call<WeatherResponse> call, #NotNull Response<WeatherResponse> response) {
if (response.body() != null) {
//...
}
}
#Override
public void onFailure(#NotNull Call<WeatherResponse> call, #NotNull Throwable t) {
t.printStackTrace();
}
});
API File
METHOD : GET
OUTPUT:
{
"status": true,
"message": "Subjects found.",
"data": {
"subjects": [
{
"subj_id": "2",
"name": "Maths",
"img": "Math.jpg"
},
{
"subj_id": "1",
"name": "Physics",
"img": "physics.png"
}
],
"total": 2
}
}
Model Class
public class SubjectTopics
{
#SerializedName("status")
#Expose
private Boolean status;
#SerializedName("message")
#Expose
private String message;
#SerializedName("data")
#Expose
private Data data;
public Boolean getStatus() {
return status;
}
public void setStatus(Boolean status) {
this.status = status;
}
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
public Data getData() {
return data;
}
public void setData(Data data) {
this.data = data;
}
}
public class Data {
#SerializedName("subjects")
#Expose
private List<Subjects> subjects = null;
#SerializedName("total")
#Expose
private Integer total;
public List<Subjects> getSubjects() {
return subjects;
}
public void setSubjects(List<Subjects> subjects) {
this.subjects = subjects;
}
public Integer getTotal() {
return total;
}
public void setTotal(Integer total) {
this.total = total;
}
}
public class Subjects {
#SerializedName("subj_id")
#Expose
private String subjId;
#SerializedName("name")
#Expose
private String name;
#SerializedName("img")
#Expose
private String img;
public String getSubjId() {
return subjId;
}
public void setSubjId(String subjId) {
this.subjId = subjId;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getImg() {
return img;
}
public void setImg(String img) {
this.img = img;
}
}
My Adapter
public class MoviesAdapter extends RecyclerView.Adapter<MoviesAdapter.MovieViewHolder> {
private List<Subjects> movies;
private int rowLayout;
private Context context;
public static class MovieViewHolder extends RecyclerView.ViewHolder {
private TextView subjectName;
private TextView ID;
private ImageView ImageV;
private RelativeLayout relativeClick;
public MovieViewHolder(View v) {
super(v);
subjectName = (TextView) itemView.findViewById(R.id.textView);
relativeClick = (RelativeLayout) itemView.findViewById(R.id.relative_click);
ImageV = (ImageView) itemView.findViewById(R.id.imageView);
}
}
public MoviesAdapter(List<Subjects> movies, int rowLayout, Context context) {
this.movies = movies;
this.rowLayout = rowLayout;
this.context = context;
}
#Override
public MoviesAdapter.MovieViewHolder onCreateViewHolder(ViewGroup parent,
int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(rowLayout, parent, false);
return new MoviesAdapter.MovieViewHolder(view);
}
#Override
public void onBindViewHolder(MoviesAdapter.MovieViewHolder holder, final int position) {
holder.subjectName.setText(movies.get(position).getName());
holder.relativeClick.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent intent = new Intent(context, SubjectTopicList.class);
intent.putExtra("subject_id", movies.get(position).getSubjId());
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(intent);
}
});
Picasso.with(context)
.load(movies.get(position).getImg())
.placeholder(R.drawable.load)
.into(holder.ImageV);
}
#Override
public int getItemCount() {
return movies.size();
}
}
Activity
private void getSubjects() {
progressBar.setVisibility(View.VISIBLE);
Call<SubjectTopics> getProductsModelClassCall = webService.getSubjects();
getProductsModelClassCall.enqueue(new Callback<SubjectTopics>() {
#Override
public void onResponse(Call<SubjectTopics> call, Response<SubjectTopics> response) {
if (response.isSuccessful()) {
List<Subjects> movies = response.body().getData().getSubjects();
MoviesAdapter newAd=new MoviesAdapter(movies, R.layout.unit_test_row, getApplicationContext());
recyclerView.setAdapter(newAd);
} else {
APIError apiError = ErrorUtils.parseError(response);
Toast.makeText(UnitTestSubjects.this, ""+apiError, Toast.LENGTH_SHORT).show();
}
if (progressBar.isEnabled())
progressBar.setVisibility(View.INVISIBLE);
progressBar.setVisibility(View.GONE);
}
#Override
public void onFailure(Call<SubjectTopics> call, Throwable t) {
Toast.makeText(UnitTestSubjects.this, "Please Try Again", Toast.LENGTH_SHORT).show();
if (progressBar.isEnabled())
progressBar.setVisibility(View.INVISIBLE);
progressBar.setVisibility(View.GONE);
}
});
}
Retrofit Code
public class ServiceGenerator {
private final static String TAG = "ApiCall";
public static Retrofit getRetrofit(){
HttpLoggingInterceptor logging = new HttpLoggingInterceptor();
// set your desired log level
logging.setLevel(HttpLoggingInterceptor.Level.BODY);
OkHttpClient.Builder httpClient = new OkHttpClient.Builder();
// add your other interceptors …
// add logging as last interceptor
httpClient.addInterceptor(logging); // <-- this is the important line!
httpClient.connectTimeout(10, TimeUnit.SECONDS).readTimeout(14, TimeUnit.SECONDS).writeTimeout(16, TimeUnit.SECONDS);
Gson gson = new GsonBuilder()
.setDateFormat("yyyy-MM-dd'T'HH:mm:ssZ")
.create();
return new Retrofit.Builder()
.baseUrl(WebServices.BASE_URL)
.client(httpClient.build())
.addConverterFactory(GsonConverterFactory.create(gson))
.build();
}
public static Api getApi(){
return getRetrofit().create(Api.class);
}
}
After calling API's using Retrofit 2.0, Unable to get any response and getting this error:
Failure:
retrofit2.ExecutorCallAdapterFactory$ExecutorCallbackCall#5321
every-time after callback it directly coming out from the method
I have tried all possible ways to solve but not able to find any solution regarding this.
I think this is internal retrofit error or in the pojo class I guess. Please help!
I need to Show Registration Form With Spinner Using Fragments and get the data using Json
This is kind of register form. At the bottom we have change language button which will reset the form and will be shown in arabic / english.
[
{
"Id":1,
"TitleEN":"Kuwait",
"TitleAR":"الكويت",
"CurrencyId":1,
"CurrencyEN":"Kuwaiti Dinar",
"CurrencyAR":"دينار كويتى",
"CodeEN":"KWD",
"CodeAR":"د.ك",
"Code":"965"
},
{
"Id":2,
"TitleEN":"Emirates",
"TitleAR":"الإمارات",
"CurrencyId":2,
"CurrencyEN":"Emirati Dirham",
"CurrencyAR":"درهم إماراتي",
"CodeEN":"AED",
"CodeAR":"درهم",
"Code":"971"
},
{
"Id":3,
"TitleEN":"Saudi Arabia",
"TitleAR":"السعودية",
"CurrencyId":3,
"CurrencyEN":"Saudi Riyal",
"CurrencyAR":"ريال سعودى",
"CodeEN":"SAR",
"CodeAR":"ر.س",
"Code":"966"
}
]
Note.I assume you have followed the first 3 steps from this [question][1]
and will start from the following
Step 1
Add spinner in xml
<Spinner
android:id="#+id/spinner"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:prompt="#string/spinner_title" />
Step 2
In ApiInterface Class add the following code
#GET("/app/app.asmx/GetCountries")
Call<List<Country>> getCountry();
Step 3
Create new model class by name Country
public class Country {
#SerializedName("Id")
#Expose
private Integer id;
#SerializedName("TitleEN")
#Expose
private String titleEN;
#SerializedName("TitleAR")
#Expose
private String titleAR;
#SerializedName("CurrencyId")
#Expose
private Integer currencyId;
#SerializedName("CurrencyEN")
#Expose
private String currencyEN;
#SerializedName("CurrencyAR")
#Expose
private String currencyAR;
#SerializedName("CodeEN")
#Expose
private String codeEN;
#SerializedName("CodeAR")
#Expose
private String codeAR;
#SerializedName("Code")
#Expose
private String code;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getTitleEN() {
return titleEN;
}
public void setTitleEN(String titleEN) {
this.titleEN = titleEN;
}
public String getTitleAR() {
return titleAR;
}
public void setTitleAR(String titleAR) {
this.titleAR = titleAR;
}
public Integer getCurrencyId() {
return currencyId;
}
public void setCurrencyId(Integer currencyId) {
this.currencyId = currencyId;
}
public String getCurrencyEN() {
return currencyEN;
}
public void setCurrencyEN(String currencyEN) {
this.currencyEN = currencyEN;
}
public String getCurrencyAR() {
return currencyAR;
}
public void setCurrencyAR(String currencyAR) {
this.currencyAR = currencyAR;
}
public String getCodeEN() {
return codeEN;
}
public void setCodeEN(String codeEN) {
this.codeEN = codeEN;
}
public String getCodeAR() {
return codeAR;
}
public void setCodeAR(String codeAR) {
this.codeAR = codeAR;
}
public String getCode() {
return code;
}
public void setCode(String code) {
this.code = code;
}
}
Step 4
find view in activity or fragment and add call the request and get response and add the response in spinner adapter.Initialize a string list out side the onCreate method
List<String> codes = new ArrayList<String>();
APIInterface apiInterfacePages;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Spinner spinner = (Spinner) findViewById(R.id.spinner);
apiInterfacePages= PageApiClient.getRetrofit().create(APIInterface.class);
Call<List<Country>> getCountry = apiInterfacePages.getCountry();
getCountry.enqueue(new Callback<List<Country>>() {
#Override
public void onResponse(Call<List<Country>> call, Response<List<Country>> response) {
countryList = response.body();
for (int i = 0; i < countryList.size(); i++) {
codes.add(countryList.get(i).getCode());
}
ArrayAdapter<String> adapterTime = new ArrayAdapter<>(MainActivity.this, android.R.layout.simple_spinner_dropdown_item, codes);
spinner.setAdapter(adapterTime);
spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
#Override
public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {
Toast.makeText(MainActivity.this, "" + countryList.get(i).getTitleEN(), Toast.LENGTH_SHORT).show();
}
#Override
public void onNothingSelected(AdapterView<?> adapterView) {
}
});
}
#Override
public void onFailure(Call<List<Country>> call, Throwable t) {
}
});
}
I just want to develop an application that can scan barcode and I also just learned to develop the application. Well the problem dan i'm confusing is, how do the results of the scan barcode send data and match the data then appear like "User Registered".
I use the library from ZXING and RETROFIT,
here is my coding:
public class ScanQRCodeActivity extends AppCompatActivity implements ZXingScannerView.ResultHandler {
private ZXingScannerView mScannerView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_scan_qrcode);
mScannerView = new ZXingScannerView(this);
setContentView(mScannerView);
}
#Override
protected void onResume() {
super.onResume();
mScannerView.setResultHandler(this);
mScannerView.startCamera();
}
#Override
protected void onPause() {
super.onPause();
mScannerView.stopCamera();
}
#Override
public void handleResult(Result rawresult) {
if (rawresult == postData()) {
// i must write what?
}
Log.v("TAG", rawresult.getText());
Log.v("TAG", rawresult.getBarcodeFormat().toString());
final AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Hasil Scan");
builder.setMessage(rawresult.getText());
builder.setNeutralButton("OK", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialogInterface, int i) {
dialogInterface.cancel();
}
});
builder.create();
builder.show();
mScannerView.resumeCameraPreview(this);
}
And my model had 2 like this:
public class DataRegisteredIn {
#SerializedName("data")
#Expose
private RegisteredIn data;
#SerializedName("status")
#Expose
private String status;
public RegisteredIn getData() {
return data;
}
public void setData(RegisteredIn data) {
this.data = data;
}
public String getStatus() {
return status;
}
public void setStatus(String status) {
this.status = status;
}
}
and this :
public class RegisteredIn {
#SerializedName("participants_id")
#Expose
private Integer participantsId;
#SerializedName("registration_number")
#Expose
private String registrationNumber;
#SerializedName("title_name")
#Expose
private String titleName;
#SerializedName("call_badge_name")
#Expose
private String callBadgeName;
#SerializedName("family_name")
#Expose
private String familyName;
#SerializedName("first_name")
#Expose
private String firstName;
#SerializedName("last_title")
#Expose
private String lastTitle;
#SerializedName("event_meals_id")
#Expose
private Integer eventMealsId;
#SerializedName("place")
#Expose
private String place;
#SerializedName("item_name")
#Expose
private String itemName;
public Integer getParticipantsId() {
return participantsId;
}
public void setParticipantsId(Integer participantsId) {
this.participantsId = participantsId;
}
public String getRegistrationNumber() {
return registrationNumber;
}
public void setRegistrationNumber(String registrationNumber) {
this.registrationNumber = registrationNumber;
}
public String getTitleName() {
return titleName;
}
public void setTitleName(String titleName) {
this.titleName = titleName;
}
public String getCallBadgeName() {
return callBadgeName;
}
public void setCallBadgeName(String callBadgeName) {
this.callBadgeName = callBadgeName;
}
public String getFamilyName() {
return familyName;
}
public void setFamilyName(String familyName) {
this.familyName = familyName;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastTitle() {
return lastTitle;
}
public void setLastTitle(String lastTitle) {
this.lastTitle = lastTitle;
}
public Integer getEventMealsId() {
return eventMealsId;
}
public void setEventMealsId(Integer eventMealsId) {
this.eventMealsId = eventMealsId;
}
public String getPlace() {
return place;
}
public void setPlace(String place) {
this.place = place;
}
public String getItemName() {
return itemName;
}
public void setItemName(String itemName) {
this.itemName = itemName;
}
}
This is also the first time I ask, so for example there is something I need to add let me clear, please tell me clearly because honestly I am very beginner.
thank you
Updated
this is a little picture what I want to make, in the picture to the left it is my application that can only get the value of the barcode but like the picture is the right one that I want, so like the value of the barcode is translated into a shape like the picture in right.
I am trying to use Retrofit2 to retrieve data as JSON and then parsing it to my RecyclerView adapter, but whatever I do I can't figure out how to get this thing to work.
At the moment, I can load up one RecyclerView with local DBFlow data, but can't figure out how to do it for the JSON that I HTTP GET with Retrofit2 for my second RecyclerView. I have the code below so far, which loads the JSON in the Log. But can't parse it to the RecyclerView.
MainActivity.java:
onCreate() {
...
mGithubApi = ApiUtils.getApi();
mGithubRecyclerView = (RecyclerView)
findViewById(R.id.github_repository_recyclerview);
RecyclerView.LayoutManager mGithubLayoutManager = new
LinearLayoutManager(getApplicationContext());
mGithubRecyclerView.setLayoutManager(mGithubLayoutManager);
mGithubRecyclerView.setHasFixedSize(true);
...
loadGithubUserRepositoryJson();
}
// Load Github repo JSON
public void loadGithubUserRepositoryJson() {
Call<ResponseBody> result = api.getRepos("motivecodex");
result.enqueue(new Callback<ResponseBody>() {
#Override
public void onResponse(Call<ResponseBody> call, Response<ResponseBody> response) {
try {
Log.e(LOG_TAG, response.body().string());
mGithubAdapter = new GithubRepositoriesAdapter((List<GithubRepository>) mGithubRepository);
mGithubRecyclerView.setAdapter(mGithubAdapter);
} catch (IOException e) {
e.printStackTrace();
}
}
#Override
public void onFailure(Call<ResponseBody> call, Throwable t) {
Log.e("MainActivity", "error loading from API");
}
});
}
GithubRepositoryAdapter.java
public class GithubRepositoriesAdapter extends RecyclerView.Adapter<GithubRepositoriesAdapter.RepositoryViewHolder> {
private List<GithubRepository> githubRepositoryList;
public class RepositoryViewHolder extends RecyclerView.ViewHolder {
public TextView repository, commits, stars, forks;
public RepositoryViewHolder(View view) {
super(view);
repository = (TextView) view.findViewById(R.id.listitem_repository);
commits = (TextView) view.findViewById(R.id.listitem_commits);
stars = (TextView) view.findViewById(R.id.listitem_stars);
forks = (TextView) view.findViewById(R.id.listitem_forked);
}
}
public GithubRepositoriesAdapter(List<GithubRepository> githubRepositoryList) {
this.githubRepositoryList = githubRepositoryList;
}
#Override
public RepositoryViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.listitem_repository, parent, false);
return new RepositoryViewHolder(itemView);
}
#Override
public void onBindViewHolder(RepositoryViewHolder holder, int position) {
GithubRepository githubRepository = githubRepositoryList.get(position);
holder.repository.setText(githubRepository.getName());
holder.commits.setText(githubRepository.getStargazersCount());
holder.stars.setText(githubRepository.getStargazersCount());
holder.forks.setText(githubRepository.getForks());
}
#Override
public int getItemCount() {
return githubRepositoryList.size();
}
}
interface Api.java:
#GET("users/{user}/repos")
Call<List<GithubRepository>> listRepos(#Path("user") String user);
model GithubRepository.java
public class GithubRepository {
#SerializedName("id")
#Expose
private Integer id;
#SerializedName("name")
#Expose
private String name;
#SerializedName("full_name")
#Expose
private String fullName;
#SerializedName("stargazers_count")
#Expose
private Integer stargazersCount;
#SerializedName("forks")
#Expose
private Integer forks;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getFullName() {
return fullName;
}
public void setFullName(String fullName) {
this.fullName = fullName;
}
public Integer getStargazersCount() {
return stargazersCount;
}
public void setStargazersCount(Integer stargazersCount) {
this.stargazersCount = stargazersCount;
}
public Integer getForks() {
return forks;
}
public void setForks(Integer forks) {
this.forks = forks;
}
}
ApiUtil.java
public static final String BASE_URL = "https://api.github.com/users/";
public static Api getApi() {
return RetrofitClient.getClient(BASE_URL).create(Api.class);
}
RetrofitClient.java
public class RetrofitClient {
private static Retrofit retrofit = null;
public static Retrofit getClient(String baseUrl) {
if (retrofit == null) {
retrofit = new Retrofit.Builder()
.baseUrl(baseUrl)
.addConverterFactory(GsonConverterFactory.create())
.build();
}
return retrofit;
}
}
Instead of Log (this approximately as I can't see your types):
localRepositoryList.addAll(response.body());
adapter.notifyDataSetChanged();
P.S: I assume you have in the code something like:
GithubRepositoriesAdapter adapter=new GithubRepositoriesAdapter(localRepositoryList);
mGithubRecyclerView.setAdapter(adapter);
Another option in log place:
mGithubRecyclerView.setAdapter(new GithubRepositoriesAdapter(response.body()));
UPDATE:
public void loadGithubUserRepositoryJson() {
api.listRepos("motivecodex").enqueue(new Callback<List<GithubRepository>>() {
#Override
public void onResponse(Call<List<GithubRepository>> call, Response<List<GithubRepository>> response) {
try {
Log.e(LOG_TAG, response.body().string());
mGithubAdapter = new GithubRepositoriesAdapter(response.body());
mGithubRecyclerView.setAdapter(mGithubAdapter);
} catch (IOException e) {
e.printStackTrace();
}
}
#Override
public void onFailure(Call<List<GithubRepository>> call, Throwable t) {
Log.e("MainActivity", "error loading from API");
}
});
}