XML : How to choose what to display from XML Android Development

So I currently have this XML layout for my android project:

  <RelativeLayout 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"  xmlns:app="http://schemas.android.com/apk/res-auto"  android:orientation="vertical"  tools:context="bhavik.slidingmenu.activity.LogFragment">  <ScrollView      android:layout_width="match_parent"      android:layout_height="495dp">      <LinearLayout          android:layout_width="match_parent"          android:layout_height="wrap_content"          android:orientation="vertical" >            <RelativeLayout              android:id="@+id/relLayout1"              android:layout_marginTop="20dp"              android:layout_marginBottom="20dp"              android:layout_width="match_parent"              android:layout_height="match_parent">                <com.rockerhieu.emojicon.EmojiconTextView                  android:id="@+id/txtEmojicon1"                  android:text="\ue11b"                  android:layout_width="match_parent"                  android:layout_height="wrap_content"                  android:textSize="45dp"                  android:textIsSelectable="true"                  android:layout_centerVertical="true"                  android:layout_alignParentLeft="true"                  android:layout_alignParentStart="true"                  android:layout_marginLeft="35dp"                  android:layout_marginStart="20dp" />                <SeekBar                  android:layout_width="match_parent"                  android:layout_height="wrap_content"                  android:id="@+id/seekBar1"                  android:max="10"                  android:progress="0"                  android:layout_alignTop="@+id/txtEmojicon1"                  android:layout_alignParentLeft="true"                  android:layout_alignParentStart="true"                  android:layout_marginTop="8dp"                  android:layout_marginLeft="90dp"                  android:layout_marginRight="75dp" />            </RelativeLayout>            <RelativeLayout              android:id="@+id/relLayout2"              android:layout_marginTop="20dp"              android:layout_marginBottom="20dp"              android:layout_width="match_parent"              android:layout_height="match_parent">                <com.rockerhieu.emojicon.EmojiconTextView                  android:id="@+id/txtEmojicon2"                  android:text="\ue11b"                  android:layout_width="match_parent"                  android:layout_height="wrap_content"                  android:textSize="45dp"                  android:textIsSelectable="true"                  android:layout_centerVertical="true"                  android:layout_alignParentLeft="true"                  android:layout_alignParentStart="true"                  android:layout_marginLeft="35dp"                  android:layout_marginStart="20dp" />                <SeekBar                  android:layout_width="match_parent"                  android:layout_height="wrap_content"                  android:id="@+id/seekBar2"                  android:max="10"                  android:progress="0"                  android:layout_alignTop="@+id/txtEmojicon2"                  android:layout_alignParentLeft="true"                  android:layout_alignParentStart="true"                  android:layout_marginTop="8dp"                  android:layout_marginLeft="90dp"                  android:layout_marginRight="75dp" />            </RelativeLayout>      </LinearLayout>  </ScrollView>    <android.support.design.widget.FloatingActionButton      android:id="@+id/fab"      android:layout_width="wrap_content"      android:layout_height="wrap_content"      android:src="@drawable/fab_ic_add"      android:layout_alignParentRight="true"      android:layout_alignParentBottom="true"      android:layout_marginBottom="@dimen/fab_button_margin_bottom"      android:layout_marginRight="@dimen/fab_button_margin_right"      app:elevation="6dp"      app:pressedTranslationZ="12dp"      app:borderWidth="0dp"/>  </RelativeLayout>    

As you see in the code I have 2 relative layouts called relLayout1 and relLayout2. Lets say depending on the conditions, I want to only display relLayout1 and not relLayout2, how would I do that? Or the other way around?

Thanks!