The error is in your results activity. In the onCreate method you have
...
// TODO Auto-generated method stub
setContentView(R.layout.resultado);
super.onCreate(savedInstanceState);
setupVariables();
...
You need to move your call to super.onCreate(savedInstanceState);
to the beginning of the method. When dealing with the overridden methods in the android lifecycle, some of the methods will have the super method called first, while others are called last. None of them though work with being called in between. Check the developer docs to be certain on when to call the supers in the future.