Android Volley - 在JSON中检查数组中的数组

Question

我有一个包含String数组（选民列表）的JSON对象。

这是JSON数组

http://jsonviewer.stack.hu/#http://www.saveme.ie/api/savings/

我的逻辑就像

将数组转换为JSONObject。

将JSON中的数组分配给List，并检查列表中的值。

String singleSaving = "";
ArrayList upVoters = new ArrayList();

// Loop through all and get single ID
for (int i = 0; i < response.length(); i++) {
    JSONObject obj = null;
    try {
        obj = response.getJSONObject(i);
        _id2 = obj.getString("_id");

        if (_id2.equals(_id)) {
            singleSaving = _id2;

            // Id like to assign the upVoters array to                           
            // the upVoters ArrayList here

        }
    } catch (JSONException e) {
        e.printStackTrace();
    }
}

Answer 1

您只需迭代upVoters JSONArray并填写ArrayList：

String singleSaving = "";
ArrayList upVoters = new ArrayList();

// Loop through all and get single ID
for (int i = 0; i < response.length(); i++) {
    JSONObject obj = null;
    try {
        obj = response.getJSONObject(i);
        _id2 = obj.getString("_id");

        if (_id2.equals(_id)) {
            singleSaving = _id2;

            // Get upVoters list as JSONArray 
            JSONArray upVotersJsonArray = obj.getJSONArray("upVoters");
            for(int j=0; j<upVotersJsonArray.length(); j++) {
                // Fill ArrayList with data from JSON
                upVoters.add(upVotersJsonArray.getString(j));
            }     
        }
     } catch (JSONException e) {
         e.printStackTrace();
     }
}