title: How to Align LinearLayout to Bottom of Activity
body: <p>I have the following activity_main.xml file, and I want to align the three buttons inside the LinearLayout to the bottom of the page. I've tried layout_alignParentBotton="true" 
  but that doesn't work.. is there any setting that would let me bring the linearLayout to the bottom of the activity?
  thanks</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:app="http://schemas.android.com/apk/res-auto"
      xmlns:tools="http://schemas.android.com/tools"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:background="@color/blueBackground"
      tools:context="org.pctechtips.george.dailyquotes.MainActivity"&gt;
  
          &lt;TextView
              android:id="@+id/main_title"
              android:layout_width="368dp"
              android:layout_height="wrap_content"
              android:text="Daily Quotes"
              android:textSize="30dp"
              android:textColor="@color/whiteText"
              android:textAlignment="center"
              tools:layout_editor_absoluteX="8dp"
              tools:layout_editor_absoluteY="16dp" /&gt;
  
          &lt;ImageView
              android:id="@+id/main_image"
              android:layout_width="100dp"
              android:layout_height="100dp"
              app:srcCompat="@mipmap/ic_launcher_round"
              android:layout_centerHorizontal="true"
              tools:layout_editor_absoluteY="89dp"
              app:layout_constraintRight_toRightOf="parent"
              app:layout_constraintLeft_toLeftOf="parent" /&gt;
  
  
          &lt;TextView
              android:id="@+id/quote_text"
              android:layout_width="368dp"
              android:layout_height="wrap_content"
              android:text="This is a random text"
              android:textColor="@color/whiteText"
              android:textSize="20dp"
              tools:layout_editor_absoluteX="8dp"
              tools:layout_editor_absoluteY="246dp" /&gt;
  
          &lt;LinearLayout
              android:layout_width="0dp"
              android:layout_height="wrap_content"
              android:orientation="horizontal"
              android:layout_alignParentBottom="true"&gt;
  
              &lt;ImageView
                  android:id="@+id/previous_quote"
                  android:layout_width="wrap_content"
                  android:layout_height="wrap_content"
                  app:srcCompat="@android:drawable/ic_media_previous"
                  tools:layout_editor_absoluteX="8dp"
                  tools:layout_editor_absoluteY="473dp" /&gt;
  
              &lt;ImageView
                  android:id="@+id/share_quote"
                  android:layout_width="wrap_content"
                  android:layout_height="wrap_content"
                  tools:layout_editor_absoluteX="8dp"
                  tools:layout_editor_absoluteY="473dp" /&gt;
  
              &lt;ImageView
                  android:id="@+id/next_quote"
                  android:layout_width="wrap_content"
                  android:layout_height="wrap_content"
                  app:srcCompat="@android:drawable/ic_media_next"
                  tools:layout_editor_absoluteX="8dp"
                  tools:layout_editor_absoluteY="473dp" /&gt;
  
          &lt;/LinearLayout&gt;
  &lt;/android.support.constraint.ConstraintLayout&gt;
  </code></pre>