io.flutter.plugin.common.JSONUtil Class Reference

Static Public Member Functions
static Object	unwrap (@Nullable Object o)
static Object	wrap (@Nullable Object o)

Detailed Description

Definition at line 14 of file JSONUtil.java.

Member Function Documentation

unwrap()

static Object io.flutter.plugin.common.JSONUtil.unwrap ( @Nullable Object  o )

inlinestatic

Convert the Json java representation to Java objects. Particularly used for converting JSONArray and JSONObject to Lists and Maps.

Definition at line 22 of file JSONUtil.java.

                                                  {
    if (JSONObject.NULL.equals(o) || o == null) {
      return null;
    }
    if (o instanceof Boolean
        || o instanceof Byte
        || o instanceof Character
        || o instanceof Double
        || o instanceof Float
        || o instanceof Integer
        || o instanceof Long
        || o instanceof Short
        || o instanceof String) {
      return o;
    }
    try {
      if (o instanceof JSONArray) {
        List<Object> list = new ArrayList<>();
        JSONArray array = (JSONArray) o;
        for (int i = 0; i < array.length(); i++) {
          list.add(unwrap(array.get(i)));
        }
        return list;
      }
      if (o instanceof JSONObject) {
        Map<String, Object> map = new HashMap<>();
        JSONObject jsonObject = (JSONObject) o;
        Iterator<String> keyIterator = jsonObject.keys();
        while (keyIterator.hasNext()) {
          String key = keyIterator.next();
          map.put(key, unwrap(jsonObject.get(key)));
        }
        return map;
      }
    } catch (Exception ignored) {
    }
    return null;
  }

wrap()

static Object io.flutter.plugin.common.JSONUtil.wrap ( @Nullable Object  o )

inlinestatic

Backport of JSONObject#wrap(Object) for use on pre-KitKat systems.

Definition at line 63 of file JSONUtil.java.

                                                {
    if (o == null) {
      return JSONObject.NULL;
    }
    if (o instanceof JSONArray || o instanceof JSONObject) {
      return o;
    }
    if (o.equals(JSONObject.NULL)) {
      return o;
    }
    try {
      if (o instanceof Collection) {
        JSONArray result = new JSONArray();
        for (Object e : (Collection) o) result.put(wrap(e));
        return result;
      } else if (o.getClass().isArray()) {
        JSONArray result = new JSONArray();
        int length = Array.getLength(o);
        for (int i = 0; i < length; i++) result.put(wrap(Array.get(o, i)));
        return result;
      }
      if (o instanceof Map) {
        JSONObject result = new JSONObject();
        for (Map.Entry<?, ?> entry : ((Map<?, ?>) o).entrySet())
          result.put((String) entry.getKey(), wrap(entry.getValue()));
        return result;
      }
      if (o instanceof Boolean
          || o instanceof Byte
          || o instanceof Character
          || o instanceof Double
          || o instanceof Float
          || o instanceof Integer
          || o instanceof Long
          || o instanceof Short
          || o instanceof String) {
        return o;
      }
      if (o.getClass().getPackage().getName().startsWith("java.")) {
        return o.toString();
      }
    } catch (Exception ignored) {
    }
    return null;
  }

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The documentation for this class was generated from the following file:

• shell/platform/android/io/flutter/plugin/common/JSONUtil.java