Use putExtra to pass the numbers to the next activity
Activity A on click of next button
next.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent i = new Intent(getActivity(), BActivity.class);
i.putExtra("A1", String.valueOf(firstnumber));
i.putExtra("A2", String.valueOf(secondnumber));
i.putExtra("A3", String.valueOf(thirdnumber));
i.putExtra("A4", String.valueOf(fourthnumber));
startActivity(i);
}
});
Activity B in onCreate
Bundle extras = getIntent().getExtras();
String firstnumber = extras.getString("A1");
String secondnumber = extras.getString("A2");
String thirdnumber = extras.getString("A3");
String fourthnumber = extras.getString("A4");
int A = Integer.valueOf(firstnumber);
int B = Integer.valueOf(secondnumber);
int C = Integer.valueOf(thirdnumber);
int D = Integer.valueOf(fourthnumber);
Then keep sending the numbers to the next activity.