I have the following code, how do I make it so that the 3 buttons are at the bottom?
Just add layout_weight="1" to in your linearLayout which having Buttons.
Edit :- let me make it simple
follow something like below, tags name may not be correct, it is just an Idea
// Top Parrent LinearLayout
// this layout will fill your screen.
// this layout gonna take lower part of button height of your screen
TOP PARENT CLOSED