Question

 spinner.setOnItemSelectedListener(new AdapterView.OnIte
 @Override                                          
 public void onItemSelected(AdapterView<?> parent, V
     if (position == 0) {                           

         title.clear();                             
         news_id.clear();                           
         date.clear();                              
         description.clear();                       
         img_url.clear();                           
         source_url.clear();                        
         category_to_fetch = "analysis";            
         getO(category_to_fetch);                   
     } else if (position == 1) {                    
         title.clear();                             
         news_id.clear();                           
         date.clear();                              
         description.clear();                       
         img_url.clear();                           
         source_url.clear();                        
         category_to_fetch = "blockchain";          
         getO(category_to_fetch);                   
     } else if (position == 2) {                    

         title.clear();                             
         news_id.clear();                           
         date.clear();                              
         description.clear();                       
         img_url.clear();                           
         source_url.clear();                        
         category_to_fetch = "exchanges";           
         getO(category_to_fetch);                   
     } else if (position == 3) {                    
         title.clear();                             
         news_id.clear();                           
         date.clear();                              
         description.clear();                       
         img_url.clear();                           
         source_url.clear();                        
         category_to_fetch = "general";             
         getO(category_to_fetch);                   
     } else if (position == 4) {                    

         title.clear();                             
         news_id.clear();                           
         date.clear();                              
         description.clear();                       
         img_url.clear();                           
         source_url.clear();                        
         category_to_fetch = "government";          
         getO(category_to_fetch);                   
     } else if (position == 5) {                    

         title.clear();                             
         news_id.clear();                           
         date.clear();                              
         description.clear();                       
         img_url.clear();                           
         source_url.clear();                        
         category_to_fetch = "ico";                 
         getO(category_to_fetch);                   
     } else if (position == 6) {                    

         title.clear();                             
         news_id.clear();                           
         date.clear();                              
         description.clear();                       
         img_url.clear();                           
         source_url.clear();                        
         category_to_fetch = "mining";              
         getO(category_to_fetch);                   
     }                                              


 }                                                  

 StringRequest stringRequest = new StringRequest(               
         Request.Method.GET,                                    
         Utils.CATEGORY, new Response.Listener<String>() {      
     @Override                                                  
     public void onResponse(String response) {                  
         try {                                                  
             Log.e("RESPONSE", response);                       

             JSONObject jsonObject = new JSONObject(response);  

             Log.e("OBJECT", jsonObject.toString());

LOGCAT

这是STRING响应

E / RESPONSE：{“分析”：[// RESPONSE

将其转换为JSON对象后，它会显示下面的数据 E / OBJECT：{“ exchanges”：[//响应

当我从旋转数据中选择分析类别时

当我从spinner数据中选择分析类别是ICO

当我从旋转数据中选择分析类别时

其他

即使我有数据也没有加载数据

Answer 1

JSON属性未排序。如果它们在解析前后突然以不同的顺序显示，就不会打扰您。

Answer 2

如果您使用改造，请使用WITH DataSource AS ( SELECT col1 ,col2 ,0 as level ,ROW_NUMBER() OVER(ORDER BY Col1, col2) AS [groupID] ,0 as anchorMatched ,col1 as startValue FROM tbl_test WHERE col1 IN (SELECT MIN(col1) FROM tbl_test) UNION ALL SELECT A.col1 ,A.col2 ,level + 1 ,B.[groupID] ,anchorMatched + CASE WHEN A.col1 = B.col2 AND A.col2 = B.startValue THEN 1 ELSE 0 END ,b.startValue FROM tbl_test A INNER JOIN DataSource B ON A.col1 = B.col2 WHERE (anchorMatched = 0 AND A.col1 <> B.startValue) ) SELECT * FROM DataSource WHERE groupID = 1;这个拦截器来记录请求和响应信息：添加gradle：

实现'com.squareup.okhttp3：logging-interceptor：3.6.0'

并添加HttpLogginInterceptor

.addInterceptor(interceptor)

如果要打印响应，请使用GSON转换器：

HttpLoggingInterceptor interceptor = new HttpLoggingInterceptor().setLevel(HttpLoggingInterceptor.Level.BODY);

OkHttpClient client = new OkHttpClient.Builder()
                .readTimeout(60, TimeUnit.SECONDS)
                .connectTimeout(60, TimeUnit.SECONDS)
                .writeTimeout(60, TimeUnit.SECONDS)
                .addInterceptor(interceptor)
                .cookieJar(new JavaNetCookieJar(cookieHandler))
                .build();

check my ans here

JSON数据未从StringRequest截距转换为JSONObject

2 个答案: