Reputation: 4446
I have an app where I fetch data from server(json) in the form of array & by using the index i used in my app, like below.
JSONObject topobj = new JSONObject(page);
JSONObject innerobj = topobj.getJSONObject("restarutant");
JSONArray phone = innerobj.getJSONArray("phone");
textViewPhone.setText("Phone: " + phone.get(0).toString() + " ,"
+ phone.get(1).toString());
for small size array I can get like this. But when array contains 'n' no of elements and dynamically i have to use this, at that time it required to convert into String Array. Can anybody tell me how I convert the json array to String array ? Thank you
Upvotes: 9
Views: 50013
Reputation: 2882
If you are using org.json
package, Here is the kotlin way of converting json array to string array.
// get json array
val jsonArray = json.getJSONArray("field")
// convert to string array
val stringArray = Array(jsonArray.length()) { jsonArray.getString(it) }
Upvotes: 0
Reputation: 12643
Another elegant kotlin way:
val list = jsonArray.map { jsonElement -> jsonElement.toString() }
And just convert to array if needed
Upvotes: 0
Reputation: 9812
Assume that you already have JSONArray jsonArray:
String[] stringArray = new stringArray[jsonArray.length()];
for(int i = 0, count = jsonArray.length(); i< count; i++)
{
try {
String jsonString = jsonArray.getString(i);
stringArray[i] = jsonString.toString();
}
catch (JSONException e) {
e.printStackTrace();
}
}
Upvotes: 6
Reputation: 3852
This I think is what you searching for
ArrayList<String> list = new ArrayList<String>();
JSONArray jsonArray = (JSONArray)jsonObject;
if (jsonArray != null) {
for (int i=0;i<jsonArray.length();i++){
list.add(jsonArray.get(i).toString());
}
Upvotes: 5
Reputation: 1501
I just did this yesterday! If you're willing to use a 3rd party library then you can use Google GSON, with the additional benefit of having more concise code.
String json = jsonArray.toString();
Type collectionType = new TypeToken<Collection<String>>(){}.getType();
Collection<String> strings = gson.fromJson(json, collectionType);
for (String element : strings)
{
Log.d("TAG", "I'm doing stuff with: " + element);
}
You can find more examples in the user guide.
Upvotes: 3
Reputation: 2425
This should help you.
Edit:
Maybe this is what you need:
ArrayList<String> stringArray = new ArrayList<String>();
JSONArray jsonArray = new JSONArray();
for(int i = 0, count = jsonArray.length(); i< count; i++)
{
try {
JSONObject jsonObject = jsonArray.getJSONObject(i);
stringArray.add(jsonObject.toString());
}
catch (JSONException e) {
e.printStackTrace();
}
}
Upvotes: 22