rbcb | R interface to Brazilian Central Bank web services | REST library

You have a general problem with your View-Management.
getView(...) is called whenever the list needs a view to display the next item. This means, that all Views used within this method should only be accessed within this method. But you store them in class members. This is which causes the behavior that the view of one item causes another item to change. Because it was initialized when item1 was loaded, but in its onClick(...) callback the class member variables reference item2 because getView() was called multiple times before the click event was triggered. You have to work inside the scope of getView(...) if you want the Views that you work with to belong all to the same layout.

Another thing i noticed which surely causes errors is your implementation of some of the Adapters methods. Specifically