I put a scrollview and my main LinearLayout inside it. I did this because when I type, some fields disappear behind the Keyboard.
Well, what happens is that the scrollView does not have scroll and part of my form is hidden behind the keyboard ..: (
What could be wrong?
I discovered the problem, besides using the scroll I have to put this property in the attributes of the activity
WindowSoftInputMode = SoftInput.AdjustResize,
[Activity (Label = "CadastroActivity", WindowSoftInputMode = SoftInput.AdjustResize, Theme = "@android:style/Theme.Holo.Light.NoActionBar")]
It worked: D