Deserialise a generic list in Gson

Question

I want to write a generic function which deserialise a generic type List with Gson here is the code:

private  List GetListFromFile(String f         


        

Answer 1

There is no way to do it without passing actual type of T (as Class) to your method.

But if you pass it explicitly, you can create a TypeToken for List as follows:

private  List GetListFromFile(String filename, Class elementType) {
    ...
    TypeToken> token = new TypeToken>() {};
    List something = gson.fromJson(data, token.getType());
    ...
}

See also:

• TypeToken