Wie kann ich Gson in der Retrofit-Bibliothek verwenden?
Ich habe Retrofit für die Sendeanforderung verwendet und die Antwort in Android erhalten, aber ich habe ein Problem, wenn ich die Antwort konvertieren möchte, die von dem Server kommt, den ich immer erhalte.Exception
:
retrofit.RetrofitError: com.google.gson.JsonSyntaxException:
java.lang.IllegalStateException: Expected BEGIN_OBJECT but was STRING
Wenn die Antwort vom Server lautet, sollte ich eine Liste mit Filmen erhalten, damit ich alle diese Filme in die Liste aufnehmen kann.
Movie
(Modellklasse):
public class Movie {
public Movie() {}
@SerializedName("original_title")
private String movieTitle;
@SerializedName("vote_average")
private String movieVoteAverage;
@SerializedName("overview")
private String movieOverview;
............
}
GitMovieApi
Klasse:
public interface GitMovieApi {
@GET("/3/movie/{movie}")
public void getMovie(@Path("movie") String typeMovie,@Query("api_key") String keyApi, Callback<Movie> response);
}
RestAdapter
Aufbau
RestAdapter restAdapter = new RestAdapter.Builder()
.setLogLevel(RestAdapter.LogLevel.FULL)
.setConverter(new GsonConverter(new GsonBuilder().registerTypeAdapter(Movie.class, new UserDeserializer()).create()))
.setEndpoint("http://api.themoviedb.org")
.build();
GitMovieApi git = restAdapter.create(GitMovieApi.class);
git.getMovie("popular", "Keyapi", new Callback<Movie>() {
@Override
public void success(Movie movie, Response response) {
Toast.makeText(getActivity(), "s", Toast.LENGTH_LONG).show();
}
@Override
public void failure(RetrofitError error) {
Toast.makeText(getActivity(), error.getMessage(), Toast.LENGTH_LONG).show();
}
});
UserDeserializer:
public class UserDeserializer implements JsonDeserializer<Movie> {
@Override
public Movie deserialize(JsonElement jsonElement, Type typeOF,
JsonDeserializationContext context)
throws JsonParseException {
JsonElement userJson = new JsonParser().parse("results");
return new Gson().fromJson(userJson, Movie.class);
}
}
Json (Antwort):
{
"page": 1,
"results": [
{
"adult": false,
"backdrop_path": "/tbhdm8UJAb4ViCTsulYFL3lxMCd.jpg",
"genre_ids": [
53,
28,
12
],
"id": 76341,
"original_language": "en",
"original_title": "Mad Max: Fury Road",
"overview": "An apocalyptic story set in the furthest.",
"release_date": "2015-05-15",
"poster_path": "/kqjL17yufvn9OVLyXYpvtyrFfak.jpg",
"popularity": 48.399601,
"title": "Mad Max: Fury Road",
"video": false,
"vote_average": 7.6,
"vote_count": 2114
},
{
"adult": false,
"backdrop_path": "/sLbXneTErDvS3HIjqRWQJPiZ4Ci.jpg",
"genre_ids": [
10751,
16,
12,
35
],
"id": 211672,
"original_language": "en",
"original_title": "Minions",
"overview": "Minions Stuart.",
"release_date": "2015-06-25",
"poster_path": "/s5uMY8ooGRZOL0oe4sIvnlTsYQO.jpg",
"popularity": 31.272707,
"title": "Minions",
"video": false,
"vote_average": 6.8,
"vote_count": 1206
},
],
"total_pages": 11871,
"total_results": 237415
}