how to access JSON DATA use key value such as "name" {"name":"young"}

Question

 

{"name":"zet", "HP":1000, "MP":2000 } --> THIS IS MY JSON COLLECTION

I want to get data value use key like "name " and get value "zet" or use key "HP" and get 1000 

how can i access  jsonDocList.get(i).getJsonDoc()  use key value?

i found function like  -> String strName = jsonDocList.get(i).getJsonDoc().getkey("zet");

 

 

 

ArrayList<Storage.JSONDocument> jsonDocList = storage.getJsonDocList();              

        for(int i=0;i<jsonDocList.size();i++)  

        {  

            strSWORDObjUID = jsonDocList.get(i).getDocId();

             System.out.println("ParseMyHero jsonSwordHero objectId is " + jsonDocList.get(i).getDocId());    

            System.out.println("ParseMyHero jsonSwordHero CreatedAt is " + jsonDocList.get(i).getCreatedAt());    

            System.out.println("ParseMyHero jsonSwordHero UpdatedAtis " + jsonDocList.get(i).getUpdatedAt());    

            System.out.println("ParseMyHero jsonSwordHero Jsondoc is " + jsonDocList.get(i).getJsonDoc());  

 

 

        }   

 

Answer 1

Hi Young,

Iterating key values from JSON document is very simple, you can use iterator as shown below:

JSONObject jsonDocument = new JSONObject(jsonDocList.get(i).getJsonDoc());

Iterator<?> keys = jsonDocument.keys();

while( keys.hasNext() ) {

   String key = (String)keys.next();

   Object value = jsonDocument.get(key);

   System.out.println("Document key: " + key + "Value is: "+value);

}

 

Using this line(Object value = jsonDocument.get(key);) of code inside for loop, you can get the values of your desired keys.  For example: name, HP etc

 

Let me know if it helps.

 

regards,

Himanshu Sharma

Comments

thank you for your help!

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Can you provide an example of iterating key values using Corona?

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Hi Brian,

You can use sortByKeyValue method as shown below:

for key, value in sortKeyByValue(table) do
       print(key..value)
    end

Regards,
Himanshu Sharma