Allign no_messages_view in the center.

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

@@ -30,10 +30,12 @@
         android:layout_width="100dp"
         android:layout_height="100dp"
         android:src="@drawable/ic_action_message_star_24dp"
-        app:layout_constraintBottom_toBottomOf="parent"
+        android:tint="@color/icon_grey"
+        app:layout_constraintBottom_toTopOf="@+id/text_no_favorite_messages"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_chainStyle="packed" />
 
     <TextView
         android:id="@+id/text_no_favorite_messages"
@@ -44,6 +46,7 @@
         android:textColor="@color/colorSecondaryText"
         android:textSize="20sp"
         android:textStyle="bold"
+        app:layout_constraintBottom_toTopOf="@+id/text_no_favorite_messages_description"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toBottomOf="@+id/image_star" />
@@ -57,6 +60,7 @@
         android:textAlignment="center"
         android:textColor="@color/colorSecondaryTextLight"
         android:textSize="16sp"
+        app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toBottomOf="@+id/text_no_favorite_messages" />

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

@@ -39,46 +39,46 @@
         android:layout_height="100dp"
         android:src="@drawable/ic_action_message_pin_24dp"
         android:tint="@color/icon_grey"
-        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintBottom_toTopOf="@id/tv_pin_title"
         app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent"
-        app:layout_constraintBottom_toTopOf="@id/tv_pin_title"
         app:layout_constraintVertical_chainStyle="packed" />
 
     <TextView
         android:id="@+id/tv_pin_title"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
+        android:layout_marginTop="24dp"
         android:text="@string/no_pinned_messages"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintTop_toBottomOf="@id/iv_pin_icon"
-        app:layout_constraintBottom_toTopOf="@id/tv_pin_description"
+        android:textColor="@color/colorSecondaryText"
         android:textSize="20sp"
-        android:layout_marginTop="24dp"
         android:textStyle="bold"
-        android:textColor="@color/colorSecondaryText"/>
+        app:layout_constraintBottom_toTopOf="@id/tv_pin_description"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@id/iv_pin_icon" />
 
     <TextView
         android:id="@+id/tv_pin_description"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:text="@string/no_pinned_description"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintTop_toBottomOf="@id/tv_pin_title"
-        app:layout_constraintBottom_toBottomOf="parent"
         android:layout_marginTop="16dp"
+        android:text="@string/no_pinned_description"
         android:textAlignment="center"
+        android:textColor="@color/colorSecondaryTextLight"
         android:textSize="16sp"
-        android:textColor="@color/colorSecondaryTextLight"/>
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@id/tv_pin_title" />
 
     <android.support.constraint.Group
         android:id="@+id/pin_view"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        app:constraint_referenced_ids="tv_pin_description,iv_pin_icon,tv_pin_title"
         android:visibility="gone"
+        app:constraint_referenced_ids="tv_pin_description,iv_pin_icon,tv_pin_title"
         tools:visibility="visible" />
 
 </android.support.constraint.ConstraintLayout>
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