Passing function as a parameter in java

Question

I\'m getting familiar with Android framework and Java and wanted to create a general \"NetworkHelper\" class which would handle most of the networking code enabling me to ju

Answer 1

Reflection is never a good idea since it's harder to read and debug, but if you are 100% sure what you're doing, you can simply call something like set_method(R.id.button_profile_edit, "toggle_edit") to attach a method to a view. This is useful in fragment, but again, some people would consider it as anti-pattern so be warned.

public void set_method(int id, final String a_method)
{
    set_listener(id, new View.OnClickListener() {
        public void onClick(View v) {
            try {
                Method method = fragment.getClass().getMethod(a_method, null);
                method.invoke(fragment, null);
            } catch (Exception e) {
                Debug.log_exception(e, "METHOD");
            }
        }
    });
}
public void set_listener(int id, View.OnClickListener listener)
{
    if (root == null) {
        Debug.log("WARNING fragment", "root is null - listener not set");
        return;
    }
    View view = root.findViewById(id);
    view.setOnClickListener(listener);
}