layout_gravity="bottom" doesn't work

Hello stackoverflow community! I'm newbie both in programming and on this site, but let's get to the point. I wrote an app: ``` <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_weight="1" android:orientation="vertical"> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:baselineAligned="false" android:orientation="horizontal" android:layout_marginTop="10dp"> <LinearLayout android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="2" android:orientation="vertical" tools:context="com.example.android.courtcounter.MainActivity" android:padding="24dp"> <TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center_horizontal" android:padding="4dp" android:text="Team A" android:textSize="14sp" android:fontFamily="sans-serif-medium"/> <TextView android:id="@+id/team_a_score" android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center_horizontal" android:padding="4dp" android:text="0" android:textSize="56sp" android:textColor="#000000" android:fontFamily="sans-serif-light" /> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_margin="4dp" android:onClick="plus3a" android:text="+3 Points" /> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_margin="4dp" android:onClick="plus2a" android:text="+2 Points" /> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_margin="4dp" android:onClick="plus1a" android:text="Free throw" /> </LinearLayout> <View android:layout_width="1dp" android:background="@android:color/darker_gray" android:layout_height="match_parent"> </View> <LinearLayout android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="2" android:orientation="vertical" tools:context="com.example.android.courtcounter.MainActivity" android:padding="24dp"> <TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center_horizontal" android:padding="4dp" android:text="Team B" android:textSize="14sp" android:fontFamily="sans-serif-medium"/> <TextView android:id="@+id/team_b_score" android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center_horizontal" android:padding="4dp" android:text="0" android:textSize="56sp" android:textColor="#000000" android:fontFamily="sans-serif-light"/> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_margin="4dp" android:onClick="plus3b" android:text="+3 Points" /> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_margin="4dp" android:onClick="plus2b" android:text="+2 Points" /> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_margin="4dp" android:onClick="plus1b" android:text="Free throw" /> </LinearLayout> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="bottom|center_horizontal" android:onClick="scoreReset" android:text="reset" /> </LinearLayout> </LinearLayout> ``` I have a problem with positioning a button at the end. I want it to be at the bottom of a screen and centered horizontally. I know I could use relative layout but I decided to check if I can do this using linear layout. And seems that I can't... "bottom" attribute is being ignored.