GeezerVison

getJSONArray()

JSONArray

Retrieves the JSONArray with the associated index value.

• // The following short JSON file called "data.json" is parsed 
  // in the code below. It must be in the project's "data" folder.
  //
  // [
  //   [
  //     { "name": "apple", "isFruit": true },
  //     { "name": "grape", "isFruit": true },
  //     { "name": "carrot", "isFruit": false }
  //   ],
  //   [
  //     { "name": "lettuce", "isFruit": false },
  //     { "name": "plum", "isFruit": true },
  //     { "name": "cinnamon", "isFruit": false }
  //   ]
  // ]
  
  JSONArray json;
  
  void setup() {
  
    json = loadJSONArray("data.json");
  
    // Get the first array of elements
    JSONArray values = json.getJSONArray(0);
    
    for (int i = 0; i < values.size(); i++) {
      
      JSONObject item = values.getJSONObject(i); 
  
      String name = item.getString("name");
      boolean isFruit = item.getBoolean("isFruit");
  
      println(name + ", " + isFruit);
    }
  }
  
  // Sketch prints:
  // apple, true
  // grape, true
  // carrot, false
  

• .getJSONArray(index)
• .getJSONArray(index, defaultValue)

• index(int)must be between 0 and length() - 1

• JSONArray

• JSONArray::getJSONObject()
• JSONArray::setJSONObject()
• JSONArray::setJSONArray()