无法从 API 获取数据，我做错了什么？

Question

hello iam试图用API中的数据填充回收视图下面主表中的子表中的数据都是为了更清楚起见的代码。

API JSON。我知道预期的begin_object有问题，但它是begin_array，并且做得很好。

{
"Status": 200,
"Message": "OK",
"Data": {
"MainServices": [
{
"Id": 11,
"ServiceTypeId": 1,
"MainServiceNameAr": "تكييفاتrn",
"MainServiceNameEn": "Air conditioningrn",
"SubServices": []
},
{
"Id": 12,
"ServiceTypeId": 1,
"MainServiceNameAr": "كهرباءrn",
"MainServiceNameEn": "Electricityrn",
"SubServices": []
},
{
"Id": 14,
"ServiceTypeId": 1,
"MainServiceNameAr": "سباكة",
"MainServiceNameEn": "Plumbingrn",
"SubServices": [
{
"Id": 24,
"MainServiceId": 14,
"SubServiceNameAr": "ادوات صحةrn",
"SubServiceNameEn": "Health Toolsrn",
"ServicePriceLists": []
},
{
"Id": 25,
"MainServiceId": 14,
"SubServiceNameAr": "انسداد المياهrn",
"SubServiceNameEn": "Water blockagern",
"ServicePriceLists": []
}
]
},
{
"Id": 15,
"ServiceTypeId": 1,
"MainServiceNameAr": "اجهزة منزليةrn",
"MainServiceNameEn": "Home appliancesrn",
"SubServices": []
},
{
"Id": 16,
"ServiceTypeId": 2,
"MainServiceNameAr": "نظافةrn",
"MainServiceNameEn": "Cleaningrn",
"SubServices": []
}
]
}
}

模型。我将模型分为ResponseModel、DataModel(其中DataModel包括列表和服务的其余部分(和MainServicesModel with ServicesTypeModel

public class MainServicesModel {
@SerializedName("Id")
public int Id;
@SerializedName("ServiceTypeId")
public int ServiceTypeId;
@SerializedName("MainServiceNameAr")
public String MainServiceNameAr;
@SerializedName("MainServiceNameEn")
public String MainServiceNameEn;
@SerializedName("SubServices")
public List<SubServicesModel> subServicesModel;
public int getId() {
return Id;
}
public void setId(int id) {
Id = id;
}
public int getServiceTypeId() {
return ServiceTypeId;
}
public void setServiceTypeId(int serviceTypeId) {
ServiceTypeId = serviceTypeId;
}
public String getMainServiceNameAr() {
return MainServiceNameAr;
}
public void setMainServiceNameAr(String mainServiceNameAr) {
MainServiceNameAr = mainServiceNameAr;
}
public String getMainServiceNameEn() {
return MainServiceNameEn;
}
public void setMainServiceNameEn(String mainServiceNameEn) {
MainServiceNameEn = mainServiceNameEn;
}
public List<SubServicesModel> getSubServicesModel() {
return subServicesModel;
}
public void setSubServicesModel(List<SubServicesModel> subServicesModel) {
this.subServicesModel = subServicesModel;
}
} 

主服务适配器

public class MainServiceAdapter extends RecyclerView.Adapter<MainServiceAdapter.MainServiceHolder> {
private List<MainServicesModel> mainServicesModelList;
private MainServiceListener listener;

public MainServiceAdapter(List<MainServicesModel> mainServicesModels , MainServiceListener listener) {
this.mainServicesModelList = mainServicesModels;
this.listener = listener;
}
@NonNull
@Override
public MainServiceAdapter.MainServiceHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View iteView = LayoutInflater.from(parent.getContext()).inflate(R.layout.main_service_item, parent, false);
return new MainServiceHolder(iteView);
}
@Override
public void onBindViewHolder(@NonNull MainServiceAdapter.MainServiceHolder holder, int position) {
holder.MainServiceTxt.setText(mainServicesModelList.get(position).getMainServiceNameAr());
}
@Override
public int getItemCount() {
//        return null!=mainServicesModelList?mainServicesModelList.size():0;
return mainServicesModelList.size();
}
public long getItemId(int position) {
return position;
}
public void setMainServicesModelList(List<MainServicesModel> mainServicesModelList) {
this.mainServicesModelList = mainServicesModelList;
notifyDataSetChanged();
}
public class MainServiceHolder extends RecyclerView.ViewHolder {
TextView MainServiceTxt;
//        ImageView
public MainServiceHolder(@NonNull View itemView) {
super(itemView);
MainServiceTxt = itemView.findViewById(R.id.MainServiceName);
itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
listener.onMainServiceSelected(mainServicesModelList.get(getAdapterPosition()));
}
});
}
}
public interface MainServiceListener {
void onMainServiceSelected(MainServicesModel mainServicesModel);
}
}

主要活动

public class MainServicesAndSubServices extends AppCompatActivity implements MainServiceAdapter.MainServiceListener {
private final List<MainServicesModel> mainServicesModelArrayList = new ArrayList<>();
MainServiceAdapter serviceAdapter = new MainServiceAdapter(mainServicesModelArrayList, this);
MainServiceViewModel mainServiceViewModel;
RecyclerView MainServiceRV;
int ServiceTypeId ;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main_sub_services);
// Here i call the ServiceTypeId from MainServiceType
Intent intent = getIntent();
Bundle bd = intent.getExtras();
if (bd != null) {
ServiceTypeId = (int) bd.get("ServiceTypeId");
}
Toast.makeText(MainServicesAndSubServices.this, "" + ServiceTypeId, 
Toast.LENGTH_SHORT).show();
// Here i call the ServiceTypeId from MainServiceType
try {
MainServiceRV = findViewById(R.id.RVMainServices);
mainServiceViewModel = ViewModelProviders.of(this).get(MainServiceViewModel.class);
mainServiceViewModel.getMainServicesByServiceTypeId(ServiceTypeId);
LinearLayoutManager layoutManager = new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false);
MainServiceRV.setLayoutManager(layoutManager);
MainServiceRV.setAdapter(serviceAdapter);
FillMainServicesList();
} catch (Exception e) {
e.printStackTrace();
}
}
private void FillMainServicesList() {
mainServiceViewModel.MainServiceMutableLiveData.observe(MainServicesAndSubServices.this, new Observer<ResponseModel>() {
@Override
public void onChanged(ResponseModel responseModel) {
serviceAdapter.setMainServicesModelList(responseModel.getData().getMainServicesModels());
serviceAdapter.notifyDataSetChanged();
Toast.makeText(MainServicesAndSubServices.this, "" + responseModel.getData().getMainServicesModels(), Toast.LENGTH_SHORT).show();
MainServiceRV.setAdapter(serviceAdapter);
}
});
}
@Override
public void onMainServiceSelected(MainServicesModel mainServicesModel) {
}
}

我在API中创建了另一个服务，以方便我对进行编码

getMainServicesByServicesTypeId(ServiceTypeId)

如有任何帮助，我们将不胜感激。如果您需要更多澄清，请随时询问

Answer 1

在MainService客户端调用它

public Call<ResponseModel> GetMainServiceByServiceTypeId(int id) {
return serviceMainInterface.GetMainServiceByServiceTypeId(id);
}