Update guidelines example to use percentages.

Change-Id: I84eda063b82fe98dae00224cbc91d8eba20ac404

Author: Nagesh Susarla

app/src/main/res/layout/constraint_example_3.xml

@@ -25,22 +25,27 @@
         android:text="@string/button"
         tools:layout_constraintTop_creator="1"
         android:layout_marginStart="8dp"
-        android:layout_marginTop="8dp"
         tools:layout_constraintLeft_creator="1"
         app:layout_constraintLeft_toLeftOf="@+id/guideline"
-        app:layout_constraintTop_toTopOf="@+id/button5" />
+        android:layout_marginLeft="8dp"
+        app:layout_constraintBaseline_toBaselineOf="@+id/button5"
+        app:layout_constraintRight_toLeftOf="@+id/guideline3"
+        android:layout_marginRight="8dp"
+        app:layout_constraintHorizontal_bias="0.9" />
 
     <Button
         android:id="@+id/button5"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:text="@string/button"
         app:layout_constraintRight_toLeftOf="@+id/guideline2"
-        tools:layout_constraintRight_creator="1"
-        tools:layout_constraintBottom_creator="1"
-        app:layout_constraintBottom_toBottomOf="@+id/button6"
-        android:layout_marginEnd="16dp"
-        android:layout_marginBottom="152dp" />
+        android:layout_marginRight="8dp"
+        android:layout_marginEnd="8dp"
+        app:layout_constraintLeft_toLeftOf="@+id/guideline3"
+        android:layout_marginLeft="8dp"
+        app:layout_constraintHorizontal_bias="0.5"
+        app:layout_constraintTop_toTopOf="@+id/guideline4"
+        android:layout_marginTop="16dp" />
 
     <Button
         android:id="@+id/button6"
@@ -51,8 +56,12 @@
         tools:layout_constraintTop_creator="1"
         tools:layout_constraintRight_creator="1"
         android:layout_marginEnd="5dp"
-        android:layout_marginTop="19dp"
-        app:layout_constraintTop_toTopOf="@+id/guideline5" />
+        android:layout_marginTop="4dp"
+        app:layout_constraintTop_toTopOf="@+id/guideline5"
+        android:layout_marginRight="8dp"
+        android:layout_marginLeft="8dp"
+        app:layout_constraintLeft_toLeftOf="@+id/guideline3"
+        app:layout_constraintHorizontal_bias="0.5" />
 
     <TextView
         android:id="@+id/textView3"
@@ -63,10 +72,13 @@
         tools:layout_constraintTop_creator="1"
         tools:layout_constraintRight_creator="1"
         app:layout_constraintRight_toRightOf="parent"
-        android:layout_marginTop="32dp"
+        android:layout_marginTop="16dp"
         tools:layout_constraintLeft_creator="1"
         app:layout_constraintLeft_toLeftOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
+        app:layout_constraintTop_toTopOf="parent"
+        android:layout_marginLeft="16dp"
+        app:layout_constraintHorizontal_bias="0.0"
+        android:layout_marginRight="16dp" />
 
     <Button
         android:id="@+id/button7"
@@ -77,7 +89,8 @@
         android:layout_marginStart="8dp"
         app:layout_constraintTop_toBottomOf="@+id/button6"
         tools:layout_constraintLeft_creator="1"
-        app:layout_constraintLeft_toLeftOf="@+id/guideline" />
+        app:layout_constraintLeft_toLeftOf="@+id/guideline"
+        android:layout_marginTop="0dp" />
 
     <Button
         android:id="@+id/button8"
@@ -96,53 +109,41 @@
         android:layout_height="0dp"
         android:id="@+id/guideline"
         android:orientation="vertical"
-        tools:layout_editor_absoluteY="0dp"
-        tools:layout_editor_absoluteX="92dp"
-        app:layout_constraintGuide_begin="92dp" />
+        app:layout_constraintGuide_percent="0.15" />
 
     <android.support.constraint.Guideline
         android:layout_width="0dp"
         android:layout_height="0dp"
         android:id="@+id/guideline2"
         android:orientation="vertical"
-        tools:layout_editor_absoluteY="0dp"
-        tools:layout_editor_absoluteX="330dp"
-        app:layout_constraintGuide_end="81dp" />
+        app:layout_constraintGuide_percent="0.85" />
 
     <android.support.constraint.Guideline
         android:layout_width="0dp"
         android:layout_height="0dp"
         android:id="@+id/guideline3"
         android:orientation="vertical"
-        tools:layout_editor_absoluteY="0dp"
-        tools:layout_editor_absoluteX="203dp"
-        app:layout_constraintGuide_percent="0.4939173" />
+        app:layout_constraintGuide_percent="0.5" />
 
     <android.support.constraint.Guideline
         android:layout_width="0dp"
         android:layout_height="0dp"
         android:id="@+id/guideline4"
-        app:layout_constraintGuide_begin="101dp"
         android:orientation="horizontal"
-        tools:layout_editor_absoluteY="101dp"
-        tools:layout_editor_absoluteX="0dp" />
+        app:layout_constraintGuide_percent="0.15" />
 
     <android.support.constraint.Guideline
         android:layout_width="0dp"
         android:layout_height="0dp"
         android:id="@+id/guideline5"
         android:orientation="horizontal"
-        tools:layout_editor_absoluteY="285dp"
-        tools:layout_editor_absoluteX="0dp"
-        app:layout_constraintGuide_percent="0.47263682" />
+        app:layout_constraintGuide_percent="0.50097847" />
 
     <android.support.constraint.Guideline
         android:layout_width="0dp"
         android:layout_height="0dp"
         android:id="@+id/guideline6"
         android:orientation="horizontal"
-        tools:layout_editor_absoluteY="520dp"
-        tools:layout_editor_absoluteX="0dp"
-        app:layout_constraintGuide_end="83dp" />
+        app:layout_constraintGuide_percent="0.85" />
 
 </android.support.constraint.ConstraintLayout>