Android: EditText field too high

Question

I have a table with cells mixed from TextView and EditText fields. For some reason all EditText fields use a bigger font than TextView (20dp vs. 12dp) and they also ignore their textSize attributes. Furthermore all EditText fields have a height that would easily fit TWO lines even though I explicitly specify a line height of 1 only.

Any ideas, how one can make EditText fields smaller (esp. "flatter", i.e. less high) and using a smaller font?

Michael