Intent

Code at Source page

//Do something like "Navigate to second Activity"
Intent intent = new Intent(MainActivity.this, PlacesActivity.class);
intent.putExtra("email", txtEmail.getText().toString().trim());
startActivity(intent);

Code at destination page

Bundle extras = getIntent().getExtras();
if(extras != null){
     String email = extras.getString("email");
     txtInfo.setText("email : " + email);
}