The situation I am struggling with:

One MainActivity and four fragments… …in a nutshell how to set a lost foccus event on a given EditText field contained on a Fragment?

In a simple activity this works very well.

protected void onCreate(Bundle savedInstanceState) {

oET_PSN = findViewById(R.id.txtEqPSN);

oET_PSN.setOnFocusChangeListener(new View.OnFocusChangeListener() {
@Override
public void onFocusChange(View view, boolean hasFocus) {
       if(!hasFocus){

             Log.d("oET_PSN", "Lost Focus");
            
          }
      }
 })

….
….

But how to get this to work in a Fragment?

Various youtubes; Various stackoverflow posts… …I am looking for a simple example that can easily be replicated