Android How to register OnTouchEvent for entire Activity main content view?

Question

I have implemented onTouchEvent(TouchEvent) on my activity. However, I would like to know what steps are required to register this as the event for the activities main Content view. I want to set the onTouchEvent for the view that covers the entire screen space of the activity. there is a setContentView() which takes a layout id. How do I register the activity as the ontouchEvent listener to the main content view. I am considering findByView(activityLayoutId) to get this view, but this does not seem quite like the right or best way. Thanks

Answer 1

Like this (in onCreate):

setContentView(R.layout.activity_main);

View view = findViewById(R.id.main); 
view.setOnTouchListener(new View.OnTouchListener() {

                                    @Override
                                    public boolean onTouch(View view,MotionEvent event) {


                                        return true;

                                    }
                                });

Answer 2

If you're looking for a way to get your content view as a View after Activity#setContentView(int), then you can set an id on the outer-most element of your layout:

android:id="@+id/entire_view"

and reference it in your onCreate method after setContentView:

View view = getViewById(R.id.entire_view);
view.setOnTouchListener( ...