lesen Json in android

Question

{"721xxxxxxx":true,"722xxxxxxx":true,"723xxxxxxx":true} 

Wie kann ich alle Schlüssel in der json lesen und wie alle Daten in der Jsonarray

Mein Code zählen kann ->

String members = s; 
/* s contain {"721xxxxxxx":true,"722xxxxxxx":true,"723xxxxxxx":true} */ 
JSONArray jsonChildArr = new JSONArray(members); 

Log.e("Error","Data in jsonArray--->"+jsonChildArr.length()); 

Answer 1

wie folgt tun.

try { 
      String members = s; 
/* s contain {"721xxxxxxx":true,"722xxxxxxx":true,"723xxxxxxx":true} */ 

      JSONObject obj = new JSONObject(members); 

     JSONArray array = obj.names(); 

     Log.d("ItemCount",array.length()+""); 

     for(int i=0;i<array.length();i++){ 
      Log.d("Item",array.getString(i)+":"+ obj.getBoolean(array.getString(i)); 
     } 

     } catch (JSONException e) { 
      e.printStackTrace(); 
     } 

Answer 2

einfacher Weg zu lesen Sie JSON-Objekt

JSONObject jsonObject = new JSONObject(members); 
Log.i("Data","Data in jsonObject--->"+jsonObject.getBoolean("721xxxxxxx")); 

Answer 3

die Sie interessieren,

JSONObject jsonObject = new JSONObject(result); 
    boolean data = jsonObject .getBoolean("721xxxxxxx"); 
    Log.d("Data","data:"+data); 

Answer 4

try this:

String jsonStr = "{"721xxxxxxx":true,"722xxxxxxx":true,"723xxxxxxx":true}"; 
JSONObject itemJsonObj = new JSONObject(jsonStr); 

HashMap<String,Boolean> result = new HashMap<>(); 
while(itemJsonObj.keys().hasNext()){ 
    //parse json and save as key-value. 
    result.put(itemJsonObj.keys().next()+"",itemJsonObj.get(itemJsonObj.keys().next()); 

// result.size() ist wie Größe des Arrays.

}

Answer 5

schrieb ich eine Bibliothek für das Parsen und Generieren von JSON in Android http://github.com/amirdew/JSON

für Ihre Probe:

JSON jsonData = new JSON(jsonString); 
int count = jsonData.count();