在 Android 中保存 Map 的最佳和最快方法是什么？

Question

I need to save Map<String, LinkedHashMap<String[], Integer>>. I try to convert string to map and back using JSON and then I add map to SharedPreferences. The second way is Java serialization. And the another one which I heard but have not use yet is a PaperDB (Github Link Of PaperDB: https://github.com/pilgr/Paper ). So, tell me what's the best way to save Map. And if you have other suggestions how to do that which I do not said about share with me(if that is better way).

Answer 1

The best and fastest way is by using Serializable interface:

final Map<String, LinkedHashMap<String[], Integer>> mapObject = new HashMap<>();
...
FileOutputStream fos = null;
try {
    fos = context.openFileOutput("/...path...", Context.MODE_PRIVATE);
    ObjectOutputStream os = new ObjectOutputStream(fos);
    os.writeObject(mapObject);
} catch (IOException e) {
    Log.e(....);
} finally {
    if (fos != null) {
        try { fos.close(); } catch (Exception ignored) { /*nothing*/ }
    }
}