can't pass a variable to a third activity - android-activity

Question

I have three activities:
-login
-choice
-entry
I Must pass the var "Name" from login to choice (and this work well) and then,from choice to entry,and this is where i have the problem :/
I can pass name to choice,but when i try to pass it to entry,i can't!
This is the code to pass from login to choice
Intent intent;
String pkg=getPackageName();
intent=new Intent(getApplicationContext(), scelta.class);
//inseriamo i dati nell'intent
String parts[] = risp.split("/");
intent.putExtra(pkg+".myNome", parts[0]);
intent.putExtra(pkg+".myId", parts[1]);
startActivity(intent);
this is choice(where probably is the error):
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.scelta);
// l'intent di questa activity
Intent intent=getIntent();
String pkg=getPackageName();
//prendiamo i dati
String nome=intent.getStringExtra(pkg+".myNome");
String Id=intent.getStringExtra(pkg+".myId");
intent.putExtra(pkg+".myNome", nome);
intent.putExtra(pkg+".myId", Id);
TextView tvNome = (TextView) findViewById(R.id.txtNome);
tvNome.setText(nome);
}
//pulsante per il checkin
public void checkin (View v){
// l'intent di questa activity
Intent intent=getIntent();
String pkg=getPackageName();
//prendiamo i dati
String nome=intent.getStringExtra(pkg+".myNome");
String Id=intent.getStringExtra(pkg+".myId");
//li reinseriamo nell'intent
intent.putExtra(pkg+".myNome", nome);
intent.putExtra(pkg+".myId", Id);
intent=new Intent(getApplicationContext(), entrata.class);
startActivity(intent);
}
checkin is the method that I use when i tap on the button for pass from choice to entry.
And this is where i take name in Entry:
Intent intent=getIntent(); // l'intent di questa activity
String pkg=getPackageName();
String nome=intent.getStringExtra(pkg+".myNome"); //prendiamo i dati
TextView tvNome = (TextView) findViewById(R.id.nome);
tvNome.setText(nome);

Answer 1

In your checkin() method you add the extras and then you create a new Intent which replaces the local "intent" variable, effectively clearing the extras again. Reorder the last 4 lines of your checkin() method like this:
intent=new Intent(getApplicationContext(), entrata.class);
intent.putExtra(pkg+".myNome", nome);
intent.putExtra(pkg+".myId", Id);
startActivity(intent);