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@viperwarp
Created February 24, 2016 03:02
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React-Native Module, ReadableMap/Array to Java JSON objects
private static WritableMap convertJsonToMap(JSONObject jsonObject) throws JSONException {
WritableMap map = new WritableNativeMap();
Iterator<String> iterator = jsonObject.keys();
while (iterator.hasNext()) {
String key = iterator.next();
Object value = jsonObject.get(key);
if (value instanceof JSONObject) {
map.putMap(key, convertJsonToMap((JSONObject) value));
} else if (value instanceof JSONArray) {
map.putArray(key, convertJsonToArray((JSONArray) value));
} else if (value instanceof Boolean) {
map.putBoolean(key, (Boolean) value);
} else if (value instanceof Integer) {
map.putInt(key, (Integer) value);
} else if (value instanceof Double) {
map.putDouble(key, (Double) value);
} else if (value instanceof String) {
map.putString(key, (String) value);
} else {
map.putString(key, value.toString());
}
}
return map;
}
private static WritableArray convertJsonToArray(JSONArray jsonArray) throws JSONException {
WritableArray array = new WritableNativeArray();
for (int i = 0; i < jsonArray.length(); i++) {
Object value = jsonArray.get(i);
if (value instanceof JSONObject) {
array.pushMap(convertJsonToMap((JSONObject) value));
} else if (value instanceof JSONArray) {
array.pushArray(convertJsonToArray((JSONArray) value));
} else if (value instanceof Boolean) {
array.pushBoolean((Boolean) value);
} else if (value instanceof Integer) {
array.pushInt((Integer) value);
} else if (value instanceof Double) {
array.pushDouble((Double) value);
} else if (value instanceof String) {
array.pushString((String) value);
} else {
array.pushString(value.toString());
}
}
return array;
}
private static JSONObject convertMapToJson(ReadableMap readableMap) throws JSONException {
JSONObject object = new JSONObject();
ReadableMapKeySetIterator iterator = readableMap.keySetIterator();
while (iterator.hasNextKey()) {
String key = iterator.nextKey();
switch (readableMap.getType(key)) {
case Null:
object.put(key, JSONObject.NULL);
break;
case Boolean:
object.put(key, readableMap.getBoolean(key));
break;
case Number:
object.put(key, readableMap.getDouble(key));
break;
case String:
object.put(key, readableMap.getString(key));
break;
case Map:
object.put(key, convertMapToJson(readableMap.getMap(key)));
break;
case Array:
object.put(key, convertArrayToJson(readableMap.getArray(key)));
break;
}
}
return object;
}
private static JSONArray convertArrayToJson(ReadableArray readableArray) throws JSONException {
JSONArray array = new JSONArray();
for (int i = 0; i < readableArray.size(); i++) {
switch (readableArray.getType(i)) {
case Null:
break;
case Boolean:
array.put(readableArray.getBoolean(i));
break;
case Number:
array.put(readableArray.getDouble(i));
break;
case String:
array.put(readableArray.getString(i));
break;
case Map:
array.put(convertMapToJson(readableArray.getMap(i)));
break;
case Array:
array.put(convertArrayToJson(readableArray.getArray(i)));
break;
}
}
return array;
}
@jose2007kj
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thanks,its really helpfull

@Mehul1437
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Thanks brother

@contfedorov
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Why do you ignore values with type Null in convertArrayToJson() method? null is correct JSON value and can be stored in JSONArray via JSONObject.NULL.

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