嵌套的Json使用改造

Question

我想閱讀sub_category> ID，從JSON使用改造名稱

但是，下面的代碼給失敗的響應。

java.lang.IllegalStateException：預期BEGIN_OBJECT但 BEGIN_ARRAY第2行2列路徑$

的json ....

[ 
{ 
    "id": "1", 
    "name": "Invamore", 
    "sub_category": [ 
     { 
      "id": "101", 
      "name": "Banner" 
     }, 
     { 
      "id": "102", 
      "name": "3 sided Dangler" 
     }, 
     { 
      "id": "103", 
      "name": "Leaflet" 
     } 
    ] 
}, 
{ 
    "id": "2", 
    "name": "HUPS", 
    "sub_category": [ 
     { 
      "id": "103", 
      "name": "Leaflet" 
     }, 
     { 
      "id": "104", 
      "name": "Posters" 
     }, 
     { 
      "id": "105", 
      "name": "Sunpack" 
     } 
    ] 
}, 
{ 
    "id": "3", 
    "name": "Xplore", 
    "sub_category": [ 
     { 
      "id": "101", 
      "name": "Banner" 
     }, 
     { 
      "id": "103", 
      "name": "Leaflet" 
     }, 
     { 
      "id": "106", 
      "name": "Dangler" 
     }, 
     { 
      "id": "107", 
      "name": "Vertical Streamer" 
     } 
    ] 
}, 
{ 
    "id": "4", 
    "name": "Xpress", 
    "sub_category": [ 
     { 
      "id": "101", 
      "name": "Banner" 
     }, 
     { 
      "id": "103", 
      "name": "Leaflet" 
     }, 
     { 
      "id": "108", 
      "name": "Streamer" 
     } 
    ] 
}, 
{ 
    "id": "5", 
    "name": "Matrix", 
    "sub_category": [ 
     { 
      "id": "103", 
      "name": "Leaflet" 
     } 
    ] 
}, 
{ 
    "id": "6", 
    "name": "Instabrite", 
    "sub_category": [ 
     { 
      "id": "103", 
      "name": "Leaflet" 
     } 
    ] 
}, 
{ 
    "id": "7", 
    "name": "Mileage", 
    "sub_category": [ 
     { 
      "id": "107", 
      "name": "Vertical Streamer" 
     } 
    ] 
}, 
{ 
    "id": "8", 
    "name": "Onam Posm", 
    "sub_category": [ 
     { 
      "id": "101", 
      "name": "Banner" 
     }, 
     { 
      "id": "106", 
      "name": "Dangler" 
     } 
    ] 
}] 

Backend.java

public void pos_func(String user_id) { 

    ApiInterface apiService = ApiClient.getClient().create(ApiInterface.class);  

    Call call = apiService.POS_MODEL_CALL(user_id); 
    call.enqueue(new Callback() { 
     @Override 
     public void onResponse(Call call, Response response) { 

     } 

     @Override 
     public void onFailure(Call call, Throwable t) { 
      Log.d("sk_log", "Failed! Error = " + t.getMessage()); 

     } 
    }); 

} 

ApiInterface.java

@FormUrlEncoded 
@POST("pos_distributed.php") 
Call<ValuesPos> POS_MODEL_CALL(@Field("user_id") String user_id); 

型號：從pojoschema2pojo.com以上JSON

ValuesPos.java

package com.example.shkhan.myapp.model; 

import com.google.gson.annotations.Expose; 
import com.google.gson.annotations.SerializedName; 

import java.util.ArrayList; 
import java.util.List; 

/** 
* Created by shkhan on 14/11/16. 
*/ 
public class ValuesPos { 
    @SerializedName("id") 
    @Expose 
    public String id; 
    @SerializedName("name") 
    @Expose 
    public String name; 
    @SerializedName("sub_category") 
    @Expose 
    public List<SubCategory> subCategory = new ArrayList<SubCategory>(); 

    /** 
    * 
    * @return 
    * The id 
    */ 
    public String getId() { 
     return id; 
    } 

    /** 
    * 
    * @param id 
    * The id 
    */ 
    public void setId(String id) { 
     this.id = id; 
    } 

    /** 
    * 
    * @return 
    * The name 
    */ 
    public String getName() { 
     return name; 
    } 

    /** 
    * 
    * @param name 
    * The name 
    */ 
    public void setName(String name) { 
     this.name = name; 
    } 

    /** 
    * 
    * @return 
    * The subCategory 
    */ 
    public List<SubCategory> getSubCategory() { 
     return subCategory; 
    } 

    /** 
    * 
    * @param subCategory 
    * The sub_category 
    */ 
    public void setSubCategory(List<SubCategory> subCategory) { 
     this.subCategory = subCategory; 
    } 

} 

SubCategory.json

package com.example.shkhan.myapp.model; 

import com.google.gson.annotations.Expose; 
import com.google.gson.annotations.SerializedName; 

/** 
* Created by shkhan on 14/11/16. 
*/ 


public class SubCategory { 

    @SerializedName("id") 
    @Expose 
    public String id; 
    @SerializedName("name") 
    @Expose 
    public String name; 

    /** 
    * 
    * @return 
    * The id 
    */ 
    public String getId() { 
     return id; 
    } 

    /** 
    * 
    * @param id 
    * The id 
    */ 
    public void setId(String id) { 
     this.id = id; 
    } 

    /** 
    * 
    * @return 
    * The name 
    */ 
    public String getName() { 
     return name; 
    } 

    /** 
    * 
    * @param name 
    * The name 
    */ 
    public void setName(String name) { 
     this.name = name; 
    } 

} 

Answer 1

將JSON包含ValuesPos

列表

ApiInterfac e.java調用單個ValuesPos

---

編輯

更改ApiInterface.java呼籲的ValuesPos

@FormUrlEncoded 
@POST("pos_distributed.php") 
Call<List<ValuesPos>> POS_MODEL_CALL(@Field("user_id") String user_id); 

Answer 2

下面的列表是整個代碼爲我工作...（感謝您的幫助）

修改後的兩類

ApiInterface.java

@FormUrlEncoded 
@POST("pos_distributed.php") 
Call<List<ValuesPos>> POS_MODEL_CALL(@Field("user_id") String user_id); 

Backend.java

public void pos_func(String user_id) { 
     dataArrayList1 = new ArrayList<>(); 
     ApiInterface apiService = ApiClient.getClient().create(ApiInterface.class); 


     Call <List<ValuesPos>> call = apiService.POS_MODEL_CALL(user_id); 

     call.enqueue(new Callback<List<ValuesPos>>() { 
      @Override 
      public void onResponse(Call<List<ValuesPos>> call, Response<List<ValuesPos>> response) { 
       Log.d("sk_log", "Status POS Code = successsss"); 
       dataArrayList1 = response.body(); 

       //ValuesPos valuesPos = (ValuesPos) response.body(); 
       Log.d("sk_log", "name==="+dataArrayList1.get(0).getName()); 
       Log.d("sk_log", "name==="+dataArrayList1.get(0).getSubCategory().get(0).getName()); 
       CustomerCollection.spinner_pos(dataArrayList1); 


      } 
      @Override 
      public void onFailure(Call<List<ValuesPos>> call, Throwable t) { 
       Log.d("sk_log", "Failed! Error = " + t.getMessage());    

      } 
     });  
    } 

:)