Android改造：在Recyclerview中显示

概述我对如何将json数据显示到回收者视图有问题.这是我的JSON数据,我想在其中显示回收站视图中的“错误”.我尝试了一些方法,但是它总是会强制关闭.{"result":true,"errors":[{"id":"e1812696024","offset":2,"length":2,"bad":&qu

我对如何将Json数据显示到回收者视图有问题.这是我的JSON数据,我想在其中显示回收站视图中的“错误”.我尝试了一些方法,但是它总是会强制关闭.

{ "result": true, "errors": [   {    "ID": "e1812696024",    "offset": 2,    "length": 2,    "bad": "is",    "better": [      "am"        ],    "type": "grammar"   },   {    "ID": "e962925648",    "offset": 8,    "length": 8,    "bad": "engeneer",    "better": [       "engineer",       "engender"        ],    "type": "spelling"    } ]}

这是我的代码：
Service.class(接口)

public interface Service {      @POST("/check.PHP")      Call<inputResult> readErrors(@query("userinput") String userinput,                                   @query("APIKey") String APIKey); }

模型类别：
inputResult.java

public class inputResult {    @Serializedname("result")    private String result;    @Serializedname("errors")    private List<Errors> errors;   //getter and setter}

错误.java

public class Errors {   @Serializedname("ID")   private String ID;   @Serializedname("offset")   private int offset;   @Serializedname("length")   private int length;   @Serializedname("bad")   private String bad;   //getter and setter}

适配器

public class ResultAdapter extends RecyclerVIEw.Adapter<ResultAdapter.ResultVIEwHolder>{Context mContext;List<Photo> photoList = new ArrayList<>();List<Errors> errorsList = new ArrayList<>();public ResultAdapter (Context mContext, List<Errors> errorsList){    this.errorsList = errorsList;    this.mContext = mContext;}@OverrIDepublic ResultVIEwHolder onCreateVIEwHolder(VIEwGroup vIEwGroup, int i) {    VIEw vIEw = LayoutInflater.from(vIEwGroup.getContext())            .inflate(R.layout.result_card, vIEwGroup, false);    return new ResultVIEwHolder(vIEw);}@OverrIDepublic voID onBindVIEwHolder(ResultVIEwHolder resultVIEwHolder, int i) {    Errors errors = errorsList.get(i);    resultVIEwHolder.mNumErrorsTextVIEw.setText(errorsList.size());    resultVIEwHolder.mIDErrorTextVIEw.setText(errors.getID());    resultVIEwHolder.mLengthErrorTextVIEw.setText(errors.getLength());    resultVIEwHolder.mBadErrorTextVIEw.setText(errors.getBad());}@OverrIDepublic int getItemCount() {    return errorsList.size();} //VIEwholder ... }

片段类：

ublic class Tab1Fragment_Gram@R_301_6598@hecker extends Fragment {private static final String TAG = "Tab1Fragment";private PhotoAdapter adapter;@BindVIEw(R.ID.inputTextEditText)EditText minputGrammarEditText;@BindVIEw(R.ID.ErrorsRecyclerVIEw)RecyclerVIEw mErrorsRecyclerVIEw;List<Errors> errors = new ArrayList<>();public ArrayList<Errors> errorArrayList = new ArrayList<>();List<inputResult> inputResults = new ArrayList<>();public ArrayList<inputResult> inputResultArrayList = new ArrayList<>();public static String userinput = "I is an engeneer!";public String APIKey = ""; @OverrIDepublic 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);    loadJson();    return vIEw;}public voID loadJson(){    Retrofit.Builder builder = new Retrofit.Builder()            .baseUrl("https://API.textgears.com")            .addConverterFactory(GsonConverterFactory.create());    Retrofit retrofit = builder.build();    Service serviceAPI = retrofit.create(Service.class);    Call<inputResult> loadErrorsCall = serviceAPI.readErrors(userinput, APIKey);    loadErrorsCall.enqueue(new Callback<inputResult>() {        @OverrIDe        public voID onResponse(Call<inputResult> call, Response<inputResult> response) {            if (response.isSuccessful()){                inputResults = response.body();                Log.i("ORIG. ARRAY SIZE", String.valueOf(inputResultArrayList.size()));                if (inputResultArrayList != null){                    for (int i = 0; i < 5; i++){                        inputResultArrayList.add(inputResults.get(i));                    }                    Log.i("NEW ARRAY SIZE", String.valueOf(errorArrayList.size()));                }                mErrorsRecyclerVIEw.setItemAnimator(new DefaultItemAnimator());                mErrorsRecyclerVIEw.setAdapter(new ResultAdapter1(getContext(), inputResultArrayList));                Log.e("Fragment", response.body().toString());                Log.e("Fragment", "SUCCESS");            }            else {                Log.i("ERROR", "");            }        }        @OverrIDe        public voID onFailure(Call<inputResult> call, Throwable t) {            Log.i("Error: ", t.getMessage());        }    });}}

Logcat：

E/AndroIDRuntime: FATAL EXCEPTION: mainProcess: renelyn.austria.grammatika, PID: 32547java.lang.classCastException: renelyn.austria.grammatika.Model.inputResult cannot be cast to java.util.List    at renelyn.austria.grammatika.Tab1Fragment_Gram@[email protected](Tab1Fragment_Gram@[email protected]:95)    at retrofit2.ExecutorCallAdapterFactory$ExecutorCallbackCall.run(ExecutorCallAdapterFactory.java:71)    at androID.os.Handler.handleCallback(Handler.java:739)    at androID.os.Handler.dispatchMessage(Handler.java:95)    at androID.os.Looper.loop(Looper.java:145)    at androID.app.ActivityThread.main(ActivityThread.java:5832)    at java.lang.reflect.Method.invoke(Native Method)    at java.lang.reflect.Method.invoke(Method.java:372)    at com.androID.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1399)    at com.androID.internal.os.ZygoteInit.main(ZygoteInit.java:1194)

解决方法:

该模型可能应该看起来像JsON输入…

与ArrayList< Error>错误而不是列表：

public class Results {    @Serializedname("result")    private Boolean success;    @Serializedname("errors")    private ArrayList<Error> errors;    ...}

另一个(这里的List可用于映射String项)：

public class Error {    @Serializedname("ID")    private String ID;    @Serializedname("offset")    private Long offset;    @Serializedname("length")    private Long length;    @Serializedname("bad")    private String bad;    @Serializedname("better")    private List<String> better;    @Serializedname("type")    private String type;    ...}

那么它应该可以正常工作,而不会引起任何混乱：

Results results = response.body();if(results.getSuccess())    ArrayList<Error> errors = results.getErrors();}

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