Starting second activity with result on Android

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I have two editText that I enter with an in and a calculate button. I would like to present the result in a second activity as soon as I press the calculate button. Could someone help me with this?

java android

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The basic model for passing information between Acitivities is this, according to android documentation:

  Intent intent = new Intent(this, OutraActivity.class);
  EditText editText = (EditText) findViewById(R.id.meuEditText);
  String message = editText.getText().toString();
  intent.putExtra("mensagem", message);
  startActivity(intent);

And to take the OutraActivity.class:

Intent intent = getIntent();
String message = intent.getStringExtra("mensagem");

There are more examples in the documentation, take advantage and give a check, is in English but is very dithic.

References for study:

http://www.ideiasprogramadas.com.br/android-passando-dados-telas/

http://developer.android.com/intl/pt-br/training/basics/firstapp/starting-activity.html

How do I pass parameters from the last Fragment to the previous Fragment?

Passing parameters from one Activity to another

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