How to Convert a JSON Array to a Regular Java List for ListView in Android?

Java Listview data binding: Convert JSON array to regular Java list

Android applications based on ListView need to be displayed in the list data. This data is typically stored in JSON format. To use JSON data in a ListView, it needs to be converted to a standard Java list.

Solution:

JSON.org contains a JSONArray class that represents a JSON array. To convert it to a Java list, you can use the following steps:

1. Create an ArrayList object:

<code class="java">ArrayList<String> list = new ArrayList<>();</code>

2. Get a JSONArray object:

<code class="java">JSONArray jsonArray = (JSONArray) jsonObject;</code>

3. Loop through an array and add its elements to a Java list:

<code class="java">if (jsonArray != null) {
    int len = jsonArray.length();
    for (int i = 0; i < len; i++) {
        list.add(jsonArray.get(i).toString());
    }
}</code>

4. Return a Java list containing JSON array elements:

<code class="java">return list;</code>

This code snippet extracts string elements from a JSON array and stores them in an ArrayList. This list can then be used to bind data to the ListView.

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