[메인][New] 세로 스크롤 스냅 제거

app/src/main/java/kr/co/zumo/app/lifeplus/view/screen/main/MainFragment.java

@@ -10,7 +10,9 @@ import android.support.annotation.Nullable;
 import android.support.v4.view.ViewCompat;
 import android.support.v4.view.ViewParentCompat;
 import android.support.v7.widget.LinearLayoutManager;
+import android.support.v7.widget.LinearSmoothScroller;
 import android.support.v7.widget.RecyclerView;
+import android.util.DisplayMetrics;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
@@ -101,12 +103,12 @@ public class MainFragment extends FragmentBase<MainPresenter> implements IMainVi
 
     AnimatorManager.getInstance().add(indicatorAnimator);
 
-    if (contentsRecyclerView.getOnFlingListener() == null) {
-      int screenHeight = SuperModel.getInstance().getScreenHeight();
-      int categoryHeight = ResourceUtil.getDimension(R.dimen.main_contents_category_height);
-      snapper = new MainContentsSnapper(1000, statusBarHeight + (((screenHeight - statusBarHeight) - categoryHeight) >> 1));
-      snapper.attachToRecyclerView(contentsRecyclerView);
-    }
+//    if (contentsRecyclerView.getOnFlingListener() == null) {
+//      int screenHeight = SuperModel.getInstance().getScreenHeight();
+//      int categoryHeight = ResourceUtil.getDimension(R.dimen.main_contents_category_height);
+//      snapper = new MainContentsSnapper(1000, statusBarHeight + (((screenHeight - statusBarHeight) - categoryHeight) >> 1));
+//      snapper.attachToRecyclerView(contentsRecyclerView);
+//    }
 
     debug();
 
@@ -177,8 +179,10 @@ public class MainFragment extends FragmentBase<MainPresenter> implements IMainVi
 
   @Override
   public void scrollToPosition(int index) {
-    if (null != snapper) {
-      snapper.smoothScrollToPosition(index);
+//    if (null != snapper) {
+//      snapper.smoothScrollToPosition(index);
+    if (null != contentsRecyclerView) {
+      contentsRecyclerView.smoothScrollToPosition(index);
 
       // appbar 를 스크롤 시키기위해서 가상 이벤트를 전송한다.
 //      NestedScrollingChildHelper helper = new NestedScrollingChildHelper(contentsRecyclerView);
@@ -219,6 +223,24 @@ public class MainFragment extends FragmentBase<MainPresenter> implements IMainVi
         protected int getExtraLayoutSpace(RecyclerView.State state) {
           return contentsRecyclerView.getLayoutManager().getHeight() * 2;
         }
+
+        @Override
+        public void smoothScrollToPosition(RecyclerView recyclerView, RecyclerView.State state, int position) {
+          RecyclerView.SmoothScroller smoothScroller = new LinearSmoothScroller(recyclerView.getContext()) {
+            @Override
+            protected float calculateSpeedPerPixel(DisplayMetrics displayMetrics) {
+              return 200f / displayMetrics.densityDpi;
+            }
+
+            // to screen center
+            @Override
+            public int calculateDtToFit(int viewStart, int viewEnd, int boxStart, int boxEnd, int snapPreference) {
+              return (boxStart + (boxEnd - boxStart) / 2) - (viewStart + (viewEnd - viewStart) / 2);
+            }
+          };
+          smoothScroller.setTargetPosition(position);
+          startSmoothScroll(smoothScroller);
+        }
       });
       contentsRecyclerView.setAdapter(adapter);
 
@@ -230,7 +252,6 @@ public class MainFragment extends FragmentBase<MainPresenter> implements IMainVi
     }
   }
 
-
   /***********************************
    * debug
    ***********************************/