Skip to content

Instantly share code, notes, and snippets.

@viperwarp
Created February 24, 2016 03:02
Show Gist options
  • Save viperwarp/2beb6bbefcc268dee7ad to your computer and use it in GitHub Desktop.
Save viperwarp/2beb6bbefcc268dee7ad to your computer and use it in GitHub Desktop.
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;
}
@onlybenyang
Copy link

In convertMapToJson() and convertArrayToJson(), if the readable value type is Number. it should consider the difference of int and double.

@jose2007kj
Copy link

thanks,its really helpfull

@Mehul1437
Copy link

Thanks brother

@contfedorov
Copy link

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.

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment