[마이][New] 스크롤러의 위치를 저장

- NestedScrollView 에 id만 지정해주면 됨.

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

@@ -1,10 +1,12 @@
 <?xml version="1.0" encoding="utf-8"?>
-<android.support.v4.widget.NestedScrollView 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:orientation="vertical">
+<android.support.v4.widget.NestedScrollView
+  android:id="@+id/scroller"
+  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:orientation="vertical">
 
   <android.support.constraint.ConstraintLayout
     android:layout_width="match_parent"
@@ -15,11 +17,11 @@
       android:id="@+id/layout_member_header"
       android:layout_width="match_parent"
       android:layout_height="wrap_content"
-      android:layout_marginBottom="6dp"
       android:layout_marginTop="18dp"
+      android:layout_marginBottom="6dp"
       android:visibility="gone"
-      app:layout_constraintTop_toTopOf="parent"
       app:layout_constraintBottom_toTopOf="@+id/divider"
+      app:layout_constraintTop_toTopOf="parent"
       tools:visibility="visible">
 
       <TextView
@@ -30,11 +32,11 @@
         android:lineSpacingExtra="8sp"
         android:textColor="@color/C000000"
         android:textSize="21sp"
-        app:layout_constraintTop_toTopOf="parent"
-        app:layout_constraintHorizontal_chainStyle="packed"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintHorizontal_bias="0.5"
+        app:layout_constraintHorizontal_chainStyle="packed"
         app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
         tools:text="@string/my_coin_detail"/>
 
       <ImageView
@@ -44,11 +46,11 @@
         android:paddingStart="3dp"
         android:paddingTop="10dp"
         android:paddingBottom="10dp"
-        app:layout_constraintTop_toTopOf="@+id/text_view_my_coin"
         app:layout_constraintBottom_toBottomOf="@+id/text_view_my_coin"
         app:layout_constraintEnd_toStartOf="@+id/image_view_my_coin_arrow"
         app:layout_constraintHorizontal_chainStyle="packed"
         app:layout_constraintStart_toEndOf="@+id/text_view_my_coin"
+        app:layout_constraintTop_toTopOf="@+id/text_view_my_coin"
         app:srcCompat="@drawable/icon_coin"/>
 
       <ImageView
@@ -58,10 +60,10 @@
         android:paddingTop="10dp"
         android:paddingEnd="3dp"
         android:paddingBottom="10dp"
-        app:layout_constraintHorizontal_bias="0.5"
-        app:layout_constraintTop_toTopOf="@+id/image_view_coin"
         app:layout_constraintBottom_toBottomOf="@+id/image_view_coin"
+        app:layout_constraintHorizontal_bias="0.5"
         app:layout_constraintStart_toEndOf="@+id/image_view_coin"
+        app:layout_constraintTop_toTopOf="@+id/image_view_coin"
         app:srcCompat="@drawable/icon_detail_arrow"/>
 
       <android.support.constraint.ConstraintLayout
@@ -280,9 +282,9 @@
       android:layout_marginEnd="25dp"
       android:background="@color/CE5E5E5"
       app:layout_constraintBottom_toTopOf="@+id/third_layout"
-      app:layout_constraintStart_toStartOf="parent"
+      app:layout_constraintEnd_toEndOf="parent"
 
-      app:layout_constraintEnd_toEndOf="parent"/>
+      app:layout_constraintStart_toStartOf="parent"/>
 
     <android.support.constraint.ConstraintLayout
       android:id="@+id/third_layout"