keyboard - resizing viewgroup, overlaying viewgroups and custom editor view

im writing a keyboard and there are a number of things i want to do:

1) i want to be able to dyamically resize the the keyboard view. I have a custom view for my keyboard, created by my InputMethodService.onCrea开发者_开发百科teInputView

i've tried calling invalidate, requestLayout, forceLayout, on the keyboard view, on its parent and on the view root but nothing seems to call the onMeasure code again in my layout to allow it to resize.

2) i would also like to have a view group that goes over the edit window and possibly over the rest of the screen. for example if the user preses a button i want to draw above thier finger (which could be over the editor window) what the are pressing or some additional information.

3) i would like to be able to disable the editor window and do this my self, so for example i can change how this functions