我的代码中有错误，用于将 aduio url（从 Firebase 检索）从适配器类传递到片段

Question

Here is the code in which error exists...

What should I do?

Answer 1

You seem to be mixing method parameter concepts. You don't need to declare a variable type when invoking a method ie: new string();

This is typically done for defining the function adapter MyAdaptor(string input){} Simply removing the type definition will change options from a parameter to a variable

 new recyclerViewAdapter(options);

Just ensure that your "options" are declared and defined before trying to use it.

Definition

Creating a new FirebaseRecyclerOptions typically follows this structure

 FirebaseRecyclerOptions<model> options =
                new FirebaseRecyclerOptions.Builder<model>()
                        .setQuery(query, model.class)
                        .build();

Source: https://github.com/firebase/FirebaseUI-Android/blob/master/database/README.md