How to make TextView the same size regardless of the texts inside
All you need to do is change the Layout_height and Layout_width like this:
<TextView android:layout_width="149dp" android:layout_height="50dp" android:background="@drawable/answer_small_off" android:layout_weight="1" android:text="@string/hello" android:gravity="center" android:id="@+id/main_text_answer1" android:lines="3" android:maxLines="3" android:textSize="10dp" android:minLines="3" android:minEms="20" android:maxEms="20" android:ems="20"> </TextView>