安卓改造 : Display JSON data in Recyclerview

Question

我对如何将我的 json 数据显示到回收站 View 有疑问。这是我的 JSON 数据，我想在其中显示单个回收器 View 中的“匹配”和“替换”对象值。我已经使用了一些其他的 json 结构，但是这个对我来说有点复杂，所以我不知道我将如何去做。

{
  "software": {
     "name": "GrammarBot",
     "version": "4.3-SNAPSHOT",
     "apiVersion": 1,
     "premium": false,
     "premiumHint": "You might be missing errors only the Premium version can find. Upgrade to see what you're missing.",
     "status": ""
      },
  "warnings": {
     "incompleteResults": false
     },
  "language": {
     "name": "English",
     "code": "en-US",
     "detectedLanguage": {
        "name": "English (US)",
        "code": "en-US"
        }
    },
  "matches": [
   {
     "message": "Statistics suggests that 'there' (as in 'Is there an answer?') might be the correct word here, not 'their' (as in 'It’s not their fault.'). Please check.",
     "shortMessage": "",
     "replacements": [
        {
        "value": "there"
        }
      ],
    "offset": 27,
    "length": 5,
    "context": {
       "text": "I can't remember how to go their.",
       "offset": 27,
       "length": 5
       },
    "sentence": "I can't remember how to go their.",
    "type": {
       "typeName": "Other"
        },
    "rule": {
       "id": "CONFUSION_RULE",
       "description": "Statistically detect wrong use of words that are easily confused",
       "issueType": "non-conformance",
       "category": {
           "id": "TYPOS",
            "name": "Possible Typo"
            }
        }
     }
   ]
}

我想要的 RecyclerView 看起来像:

匹配 1，
替换 1，
第 2 场比赛，
第 3 场比赛，
替换 2

这是我的代码:

服务(接口(interface))

public interface Service {

      @GET("/v2/check?")
      Call<GrammarBotMain> readErrorsGrammar(@Query("api_key") String api_key,
                                       @Query("text") String text,
                                       @Query("language") String language);
 }

模型类:

GrammarBotMain.java

public class GrammarBotMain {

    @SerializedName("software")
    private Software software;

    @SerializedName("warnings")
    private Warning warning;

    @SerializedName("language")
    private Language language;

    @SerializedName("matches")
    private ArrayList<Match> matches;

    //--getter and setter
}

匹配.java

public class Match {

    @SerializedName("message")
    private String message;

    @SerializedName("shortMessage")
    private String shortMessage;

    @SerializedName("replacements")
    private ArrayList<Replacement> replacements;

    @SerializedName("offset")
    private int offset;

    @SerializedName("length")
    private int length;

    @SerializedName("context")
    private Context context;

    @SerializedName("sentence")
    private String sentence;

    @SerializedName("type")
    private Type type;

    @SerializedName("rule")
    private Rule rule;

    //--getter and setter
 }

替换.java

public class Replacement {

    @SerializedName("value")
    private String value;

    //--getter and setter
 }

适配器

public class ResultAdapter extends RecyclerView.Adapter<ResultAdapter.ResultViewHolder>{

Context mContext;
ArrayList<Match> matchList = new ArrayList<>();
ArrayList<Replacement> replacementList = new ArrayList<>();

public ResultAdapter (Context mContext, ArrayList<Match> matchList){
    this.matchList = matchList;
    this.mContext = mContext;
}


@Override
public ResultViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
    View view = LayoutInflater.from(viewGroup.getContext())
            .inflate(R.layout.result_card, viewGroup, false);
    return new ResultViewHolder(view);
}

@Override
public void onBindViewHolder(ResultViewHolder resultViewHolder, int i) {

    Match match = matchList.get(i);
    resultViewHolder.mBadErrorTextView.setText(match.getSentence());
    resultViewHolder.mBetterErrorTextView.setText(match.getMessage());
}
 //viewholder and getcount
}

fragment 类

public class Tab1Fragment_GrammarChecker extends Fragment {

@BindView(R.id.InputTextEditText)
EditText mInputGrammarEditText;

@BindView(R.id.ErrorsRecyclerView)
RecyclerView mErrorsRecyclerView;

public static String userInput;
public String apiKey = "";
public String language = "en-US";

@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.tab1_grammar_checker, container, false);

    ButterKnife.bind(this, view);
    RecyclerView.LayoutManager layoutManager = new LinearLayoutManager(getContext());
    mErrorsRecyclerView.setLayoutManager(layoutManager);
    mErrorsRecyclerView.setItemAnimator(new DefaultItemAnimator());

    return view;
}

//onClick

public void loadJson(){
    Retrofit.Builder builder = new Retrofit.Builder()
            .baseUrl("http://api.grammarbot.io")
            .addConverterFactory(GsonConverterFactory.create());

    Retrofit retrofit = builder.build();
    Service serviceAPI = retrofit.create(Service.class);
    Call<GrammarBotMain> loadErrorsCall = serviceAPI.readErrorsGrammar(apiKey, userInput, language);

    final ProgressDialog progressDialog;
    progressDialog = new ProgressDialog(getActivity());
    progressDialog.setMax(100);
    progressDialog.setMessage(getResources().getString(R.string.progressDialogLoadingResultMessage));
    progressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
    progressDialog.show();

    loadErrorsCall.enqueue(new Callback<GrammarBotMain>() {
        @Override
        public void onResponse(Call<GrammarBotMain> call, Response<GrammarBotMain> response) {
            progressDialog.dismiss();
            GrammarBotMain grammarBotMain = response.body();

                ArrayList<Match> matches = grammarBotMain.getMatches();

                mErrorsRecyclerView.setAdapter(new ResultAdapter(getContext(), matches));
                Log.i("Fragment", "SUCCESS");
            }

        @Override
        public void onFailure(Call<GrammarBotMain> call, Throwable t) {
            progressDialog.dismiss();
            Log.e("Error: ", t.getMessage());
        }
    });
}

}

Answer 1

我不知道你是如何决定维护列表顺序的。但是如果你想在同一个 RecyclerView 中混合两种类型的对象值，那么你可以按照以下步骤操作:

1) 在您的适配器中使用 Object 的 ArrayList 而不是 Match 或 Replacement ArrayLists。根据您想要的顺序将您的 Match 和 Replacement 对象添加到该对象列表中。

ArrayList<Object> data = new ArrayList<>();
data.add(match1);
data.add(replacement1);
data.add(match2);

2) 通过这种方式确定当前需要在 onCreateViewHolder() 和 onBindViewHolder() 中处理的 View 类型方法:

int VIEW_TYPE_MATCH = 1;
int VIEW_TYPE_REPLQCEMENT = 2;

private int getViewType(int position) {
   Object value = data.get(position);
   if (value instanceof Match) return VIEW_TYPE_MATCH;
   else return VIEW_TYPE_REPLQCEMENT;
}