Why Does My String-to-JSONArray Conversion Fail in Android, and How Can I Fix It?

Issue with Converting String to JSON Array

In an attempt to parse a JSON string from a web service into a JSON array, an Android developer encountered a type mismatch exception. The provided JSON string is valid and the following code was used:

JSONArray jsonArray = new JSONArray(readlocationFeed);

Resolution

The issue lies in the type of JSON object being created. The received JSON is actually a JSON object, not an array. To resolve the issue, the code should be modified as follows:

JSONObject jsonObject = new JSONObject(readlocationFeed);

JSONArray jsonArray = jsonObject.getJSONArray("locations");

This will create a JSONObject from the JSON string and then retrieve the "locations" array from it. The array can then be iterated over to access the individual location objects. Here's the revised code:

JSONObject jsonObject = new JSONObject(readlocationFeed);

JSONArray jsonArray = jsonObject.getJSONArray("locations");
for (int i = 0; i < jsonArray.length(); i++) {
    JSONObject locationObject = jsonArray.getJSONObject(i);
}

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