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Android using Fragment without extend the class

This is a pretty straightfoward question... i would like to use very simple fragments and tell them which layout to inflate without the need to create a class for each fragment and override the method onCreateView
in simple words i would like to do:
Fragment f = new Fragment();
f.loadfromlayout(R.layout.layout);
is there any way to achieve that?
the closest i get is:
new Fragment() {
public View onCreateView(#NonNull LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
return inflater.inflate(R.layout.activity_send_screenshot_step1, container, false);
}
}
======================UPDATE===================
Just to clarify a bit more my requirements. What i'm trying to achieve is this:
https://developer.android.com/training/animation/screen-slide
https://developer.android.com/training/animation/anim_screenslide.mp4
Use ViewPager to create a step-by-step wizard
as shown in the official android documentation my example will load a very simple layout for each "step" (every step is a fragment)... and in order to get this using the default android components i need to create a new class extending Fragment for every single step in my wizard all of them are exaclty the same thing just specifying a different layout in the onCreateView
that is very unnelegant and a lot of repetitive code in my opinion. i would like to avoid

As many people pointed in the comments this behavior was not originally desinged to happen in android.
I found a solution that will work for my case and still fine.
public class GenericFragment extends Fragment {
public static GenericFragment newInstance(#LayoutRes int layout) {
Bundle b = new Bundle();
b.putInt("layout", layout);
GenericFragment g = new GenericFragment();
g.setArguments(b);
return g;
}
#Nullable
#Override
public View onCreateView(#NonNull LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
return inflater.inflate(getArguments().getInt("layout"), container, false);
}
}
this way i need only 1 single class extending Fragment and i can have as many pages with different layouts i want in my wizards... as long as the pages dont have "specific behavior"

How to correctly add code to a Fragment with a Recycler view in XML?

I have only the mainActivity and I use 3 fragnments and navigate through them with a bottomnav. All good until now, Im able to run the app on the emulator but when I select this fragment with my RecyclerView I get this error message and the app crashes
java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v7.widget.RecyclerView.setAdapter(android.support.v7.widget.RecyclerView$Adapter)' on a null object reference
I've seen a lot of alike answers and try to make my way arround but no success, so Im thinking Im not putting the code in the correct way or in the correct places, can you give me some advice?
Here is the Fragment code
public class administrador_atletas extends Fragment {
//Lista de atletas
public List<lista_atletas> lista_atl;
public RecyclerView rcc_lista_atletas;
public lista_atletas_adaptador adaptador_lista_atletas;
public View onCreateView( LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_administrador_atletas, container, false);
rcc_lista_atletas = (RecyclerView)view.findViewById(R.id.recycler_administrador_atletas);
return view;
}
#Override
public void onActivityCreated (Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
LinearLayoutManager linear = new LinearLayoutManager(this.getActivity());
linear.setOrientation(LinearLayoutManager.VERTICAL);
rcc_lista_atletas.setLayoutManager(linear);
}
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// do your variables initialisations here except Views!!!
data();
iniciar_adaptador_atletas();
}
public void onViewCreated(View view, Bundle savedInstanceState){
super.onViewCreated(view, savedInstanceState);
}
public void data(){
lista_atl = new ArrayList<>();
lista_atl.add(new lista_atletas("Astrid Ruvalcaba Ramos", "Esgrima"));
lista_atl.add(new lista_atletas("Daniel Sanchez Cuevas", "G. Artistica"));
lista_atl.add(new lista_atletas("Alexa Luna Contreras", "TKD"));
lista_atl.add(new lista_atletas("Paul Carillo Mendez", "Natacion"));
lista_atl.add(new lista_atletas("Karen Mendoza Galindo", "Boxeo"));
lista_atl.add(new lista_atletas("Marco Torres Miranda", "Tiro con arco"));
}
public void iniciar_adaptador_atletas(){
adaptador_lista_atletas = new lista_atletas_adaptador(lista_atl);
rcc_lista_atletas.setAdapter(adaptador_lista_atletas);
}
Thanks in advance
EDIT: I just moved
data();
iniciar_adaptador_atletas();
Bellow
rcc_lista_atletas.setLayoutManager(linear);
In onCreateView so I have this
public View onCreateView( LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_administrador_atletas, container, false);
rcc_lista_atletas = (RecyclerView)view.findViewById(R.id.recycler_administrador_atletas);
LinearLayoutManager linear = new LinearLayoutManager(this.getActivity());
linear.setOrientation(LinearLayoutManager.VERTICAL);
rcc_lista_atletas.setLayoutManager(linear);
data();
iniciar_adaptador_atletas();
return view;
}
And it worked, now Im able to enter the fragment with my data
Many thanks to all, your info was very useful!

As the error message says, you are calling the method setAdapter on a null-valued variable (probably rcc_lista_atletas).
While the error is not exactly in the source code you published (you should update your post with the full code), I suppose one of the methods, data() or iniciar_adaptador_atletas(), is calling 'setAdapter'.
You must remember that onCreate is executed before onCreateView. So, you're probably calling setAdapter before the onCreateView is executed and, doing so, rcc_lista_atletas is still null. Move data() and iniciar_adaptador_atletas() to the line before "return view;" in onCreateView and test it again.
This is the best we can do without checking you full code.

It seems, you try to connect adapter to recyclerView before created recyclerView. So, try to move iniciar_adaptador_atletas(); to the bottom of
rcc_lista_atletas = (RecyclerView)view.findViewById(R.id.recycler_administrador_atletas);

Creating a floating activity like in contacts app

I've been looking for how to implement an activity which won't be in full screen but not a dialog style. It is desired to be as follows:
I've tried some methods like AppTheme Dialog but I'm not getting the result I'm expecting. Any ideas how can I achieve that?

The best solution is to use BottomSheetBehaviour
It is pretty easy to use and has a nice animation. Take a look at a simple guide here. Sorry, I can't post the whole process here in detail. But for a quick implementation.
Create a class
public class CustomBottomSheetDialogFragment extends BottomSheetDialogFragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.my_layout, container, false);
return v;
}
}
Fill in your bottom by calling the class
new CustomBottomSheetDialogFragment().show(getSupportFragmentManager(), "Dialog");

Butterknife Fragment Injecting Views Not Working?

Can anyone explain why my View element (ListView) is null with the following code:
public class NewsFragment extends Fragment {
#InjectView(R.id.news_listView) ListView lv;
#Override
public View onCreateView(LayoutInflater inflater,
ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.news_layout, container, false);
ButterKnife.inject(this, view);
return view;
}
#Override
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
if (lv == null) {
UIHelper.showAlert("null?");
}
}
}
Am I doing something wrong or is there something wrong with the library, because I pasted the example code to my app to get it working, but it's not working here... Any help is much appreciated!

Have you setup your IDE?
IDE CONFIGURATION
Some IDEs require additional configuration in order to enable
annotation processing.
IntelliJ IDEA — If your project uses an external configuration (like a
Maven pom.xml) then annotation processing should just work. If not,
try manual configuration.
Eclipse — Set up manual configuration
Usually this means that the annotation processor didn't do its work. That might be due to misconfiguration or random problems with the IDE. In my experience, every now and then I had to clean the project and build everything again.

This work for me:
...
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_home, container, false);
ButterKnife.bind(this, view);
return view;
}
#Override
public void onActivityCreated(#Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
...

What does it mean to "chain to a superclass"?

I am using CommonsWare's Android CWAC-Camera Library and trying to use my own UI for the camera fragment. Please forgive me if this is a dumb question. I am following the README file specifically this part:
"You can subclass CameraFragment and override onCreateView(). Chain to the superclass to get the CameraFragment's own UI, then wrap that in your own container with additional widgets, and return the combined UI from your onCreateView()."
Has anyone used this and can provide an example? Thanks!

They mean something like this:
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View camera = super.onCreateView(inflater, container, savedInstanceState);
// wrap camera in some other container that you inflate or instantiate
return yourView;
}