diff --git a/app/src/leanback/java/com/fongmi/android/tv/ui/activity/CollectActivity.java b/app/src/leanback/java/com/fongmi/android/tv/ui/activity/CollectActivity.java
index faea35f93..c27b8cdaa 100644
--- a/app/src/leanback/java/com/fongmi/android/tv/ui/activity/CollectActivity.java
+++ b/app/src/leanback/java/com/fongmi/android/tv/ui/activity/CollectActivity.java
@@ -158,7 +158,7 @@ public class CollectActivity extends BaseActivity {
         if (child == null) return;
         mOldView = child.itemView;
         mOldView.setActivated(true);
-        App.post(mRunnable, 200);
+        App.post(mRunnable, 100);
     }
 
     private final Runnable mRunnable = new Runnable() {
diff --git a/app/src/leanback/java/com/fongmi/android/tv/ui/activity/VodActivity.java b/app/src/leanback/java/com/fongmi/android/tv/ui/activity/VodActivity.java
index bcda2a45e..e85ddd5a9 100644
--- a/app/src/leanback/java/com/fongmi/android/tv/ui/activity/VodActivity.java
+++ b/app/src/leanback/java/com/fongmi/android/tv/ui/activity/VodActivity.java
@@ -26,7 +26,7 @@ import com.fongmi.android.tv.bean.Result;
 import com.fongmi.android.tv.bean.Site;
 import com.fongmi.android.tv.databinding.ActivityVodBinding;
 import com.fongmi.android.tv.ui.base.BaseActivity;
-import com.fongmi.android.tv.ui.fragment.VodFragment;
+import com.fongmi.android.tv.ui.fragment.TypeFragment;
 import com.fongmi.android.tv.ui.presenter.TypePresenter;
 import com.fongmi.android.tv.utils.KeyUtil;
 import com.fongmi.android.tv.utils.ResUtil;
@@ -41,7 +41,6 @@ public class VodActivity extends BaseActivity implements TypePresenter.OnClickLi
     private ActivityVodBinding mBinding;
     private ArrayObjectAdapter mAdapter;
     private PageAdapter mPageAdapter;
-    private boolean coolDown;
     private View mOldView;
 
     public static void start(Activity activity, Result result) {
@@ -146,13 +145,8 @@ public class VodActivity extends BaseActivity implements TypePresenter.OnClickLi
         mAdapter.notifyArrayItemRangeChanged(0, mAdapter.size());
     }
 
-    private VodFragment getFragment() {
-        return (VodFragment) mPageAdapter.instantiateItem(mBinding.pager, mBinding.pager.getCurrentItem());
-    }
-
-    private void setCoolDown() {
-        App.post(() -> coolDown = false, 2000);
-        coolDown = true;
+    private TypeFragment getFragment() {
+        return (TypeFragment) mPageAdapter.instantiateItem(mBinding.pager, mBinding.pager.getCurrentItem());
     }
 
     @Override
@@ -168,16 +162,15 @@ public class VodActivity extends BaseActivity implements TypePresenter.OnClickLi
     @Override
     public boolean dispatchKeyEvent(KeyEvent event) {
         if (KeyUtil.isMenuKey(event)) updateFilter((Class) mAdapter.get(mBinding.pager.getCurrentItem()));
-        if (KeyUtil.isBackKey(event) && event.isLongPress() && getFragment().goRoot()) setCoolDown();
         return super.dispatchKeyEvent(event);
     }
 
     @Override
     protected void onBackInvoked() {
         Class item = (Class) mAdapter.get(mBinding.pager.getCurrentItem());
-        if (item.getFilter() != null && item.getFilter()) updateFilter(item);
+        if (item != null && item.getFilter() != null && item.getFilter()) updateFilter(item);
         else if (getFragment().canBack()) getFragment().goBack();
-        else if (!coolDown) super.onBackInvoked();
+        else super.onBackInvoked();
     }
 
     class PageAdapter extends FragmentStatePagerAdapter {
@@ -190,7 +183,7 @@ public class VodActivity extends BaseActivity implements TypePresenter.OnClickLi
         @Override
         public Fragment getItem(int position) {
             Class type = (Class) mAdapter.get(position);
-            return VodFragment.newInstance(getKey(), type.getTypeId(), type.getStyle(), type.getExtend(false), "1".equals(type.getTypeFlag()));
+            return TypeFragment.newInstance(getKey(), type.getTypeId(), type.getStyle(), type.getExtend(false), "1".equals(type.getTypeFlag()));
         }
 
         @Override
diff --git a/app/src/leanback/java/com/fongmi/android/tv/ui/base/BaseFragment.java b/app/src/leanback/java/com/fongmi/android/tv/ui/base/BaseFragment.java
index f00529fec..a506737ed 100644
--- a/app/src/leanback/java/com/fongmi/android/tv/ui/base/BaseFragment.java
+++ b/app/src/leanback/java/com/fongmi/android/tv/ui/base/BaseFragment.java
@@ -14,8 +14,6 @@ public abstract class BaseFragment extends Fragment {
 
     protected abstract ViewBinding getBinding(@NonNull LayoutInflater inflater, @Nullable ViewGroup container);
 
-    private boolean init;
-
     @Nullable
     @Override
     public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
@@ -25,29 +23,12 @@ public abstract class BaseFragment extends Fragment {
     @Override
     public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
         initView();
+        initEvent();
     }
 
     protected void initView() {
     }
 
-    protected void initData() {
-    }
-
-    private void onVisible() {
-        if (init) return;
-        initData();
-        init = true;
-    }
-
-    @Override
-    public void setUserVisibleHint(boolean isVisibleToUser) {
-        super.setUserVisibleHint(isVisibleToUser);
-        if (isVisibleToUser) if (isResumed()) onVisible();
-    }
-
-    @Override
-    public void onResume() {
-        super.onResume();
-        if (getUserVisibleHint()) onVisible();
+    protected void initEvent() {
     }
 }
diff --git a/app/src/leanback/java/com/fongmi/android/tv/ui/custom/CustomVerticalGridView.java b/app/src/leanback/java/com/fongmi/android/tv/ui/custom/CustomVerticalGridView.java
index 577ab0c1f..cbdee5fd7 100644
--- a/app/src/leanback/java/com/fongmi/android/tv/ui/custom/CustomVerticalGridView.java
+++ b/app/src/leanback/java/com/fongmi/android/tv/ui/custom/CustomVerticalGridView.java
@@ -64,6 +64,11 @@ public class CustomVerticalGridView extends VerticalGridView {
         if (views != null) for (View view : views) view.setVisibility(View.VISIBLE);
     }
 
+    public boolean isHeaderVisible() {
+        if (views != null) for (View view : views) if (view.getId() == R.id.recycler && view.getVisibility() == View.VISIBLE) return true;
+        return false;
+    }
+
     @Override
     public boolean dispatchKeyEvent(KeyEvent event) {
         if (event.getAction() != KeyEvent.ACTION_DOWN) return super.dispatchKeyEvent(event);
diff --git a/app/src/leanback/java/com/fongmi/android/tv/ui/fragment/CollectFragment.java b/app/src/leanback/java/com/fongmi/android/tv/ui/fragment/CollectFragment.java
index 7c319c5ec..7c02eb469 100644
--- a/app/src/leanback/java/com/fongmi/android/tv/ui/fragment/CollectFragment.java
+++ b/app/src/leanback/java/com/fongmi/android/tv/ui/fragment/CollectFragment.java
@@ -69,6 +69,7 @@ public class CollectFragment extends BaseFragment implements CustomScroller.Call
     protected void initView() {
         setRecyclerView();
         setViewModel();
+        addVideo(mCollect);
     }
 
     private void setRecyclerView() {
@@ -88,13 +89,8 @@ public class CollectFragment extends BaseFragment implements CustomScroller.Call
         });
     }
 
-    @Override
-    protected void initData() {
-        if (mCollect != null) addVideo(mCollect.getList());
-    }
-
     private boolean checkLastSize(List<Vod> items) {
-        if (mLast == null || items.size() == 0) return false;
+        if (mLast == null || items.isEmpty()) return false;
         int size = Product.getColumn() - mLast.size();
         if (size == 0) return false;
         size = Math.min(size, items.size());
@@ -103,8 +99,12 @@ public class CollectFragment extends BaseFragment implements CustomScroller.Call
         return true;
     }
 
+    private void addVideo(Collect collect) {
+        if (collect != null) addVideo(collect.getList());
+    }
+
     public void addVideo(List<Vod> items) {
-        if (checkLastSize(items) || requireActivity() == null || requireActivity().isFinishing()) return;
+        if (checkLastSize(items) || getActivity() == null || requireActivity().isFinishing()) return;
         List<ListRow> rows = new ArrayList<>();
         for (List<Vod> part : Lists.partition(items, Product.getColumn())) {
             mLast = new ArrayObjectAdapter(new VodPresenter(this));
@@ -132,10 +132,4 @@ public class CollectFragment extends BaseFragment implements CustomScroller.Call
         mViewModel.searchContent(mCollect.getSite(), getKeyword(), page);
         mScroller.setLoading(true);
     }
-
-    @Override
-    public void setUserVisibleHint(boolean isVisibleToUser) {
-        super.setUserVisibleHint(isVisibleToUser);
-        if (mBinding != null && !isVisibleToUser) mBinding.recycler.moveToTop();
-    }
 }
diff --git a/app/src/leanback/java/com/fongmi/android/tv/ui/fragment/TypeFragment.java b/app/src/leanback/java/com/fongmi/android/tv/ui/fragment/TypeFragment.java
new file mode 100644
index 000000000..468052c4d
--- /dev/null
+++ b/app/src/leanback/java/com/fongmi/android/tv/ui/fragment/TypeFragment.java
@@ -0,0 +1,90 @@
+package com.fongmi.android.tv.ui.fragment;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.ViewGroup;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.FragmentTransaction;
+import androidx.viewbinding.ViewBinding;
+
+import com.fongmi.android.tv.R;
+import com.fongmi.android.tv.bean.Style;
+import com.fongmi.android.tv.databinding.FragmentFolderBinding;
+import com.fongmi.android.tv.ui.base.BaseFragment;
+
+import java.util.HashMap;
+
+public class TypeFragment extends BaseFragment {
+
+    public static TypeFragment newInstance(String key, String typeId, Style style, HashMap<String, String> extend, boolean folder) {
+        Bundle args = new Bundle();
+        args.putString("key", key);
+        args.putString("typeId", typeId);
+        args.putBoolean("folder", folder);
+        args.putParcelable("style", style);
+        args.putSerializable("extend", extend);
+        TypeFragment fragment = new TypeFragment();
+        fragment.setArguments(args);
+        return fragment;
+    }
+
+    private String getKey() {
+        return getArguments().getString("key");
+    }
+
+    private String getTypeId() {
+        return getArguments().getString("typeId");
+    }
+
+    private boolean getFolder() {
+        return getArguments().getBoolean("folder");
+    }
+
+    private Style getStyle() {
+        return getArguments().getParcelable("style");
+    }
+
+    private HashMap<String, String> getExtend() {
+        return (HashMap<String, String>) getArguments().getSerializable("extend");
+    }
+
+    @Override
+    protected ViewBinding getBinding(@NonNull LayoutInflater inflater, @Nullable ViewGroup container) {
+        return FragmentFolderBinding.inflate(inflater, container, false);
+    }
+
+    @Override
+    protected void initView() {
+        getChildFragmentManager().beginTransaction().replace(R.id.container, VodFragment.newInstance(getKey(), getTypeId(), getStyle(), getExtend(), getFolder())).commit();
+    }
+
+    public void openFolder(String typeId) {
+        VodFragment next = VodFragment.newInstance(getKey(), typeId, getStyle(), getExtend(), getFolder());
+        VodFragment current = (VodFragment) getChildFragmentManager().findFragmentById(R.id.container);
+        FragmentTransaction ft = getChildFragmentManager().beginTransaction();
+        if (current != null) ft.hide(current);
+        ft.add(R.id.container, next);
+        ft.addToBackStack(null);
+        ft.commit();
+    }
+
+    public void toggleFilter(boolean visible) {
+        VodFragment current = (VodFragment) getChildFragmentManager().findFragmentById(R.id.container);
+        if (current != null) current.toggleFilter(visible);
+    }
+
+    public void onRefresh() {
+        VodFragment current = (VodFragment) getChildFragmentManager().findFragmentById(R.id.container);
+        if (current != null) current.onRefresh();
+    }
+
+    public boolean canBack() {
+        return getChildFragmentManager().getBackStackEntryCount() > 0;
+    }
+
+    public void goBack() {
+        getChildFragmentManager().popBackStack();
+    }
+}
diff --git a/app/src/leanback/java/com/fongmi/android/tv/ui/fragment/VodFragment.java b/app/src/leanback/java/com/fongmi/android/tv/ui/fragment/VodFragment.java
index 49f3eee70..e2af082e6 100644
--- a/app/src/leanback/java/com/fongmi/android/tv/ui/fragment/VodFragment.java
+++ b/app/src/leanback/java/com/fongmi/android/tv/ui/fragment/VodFragment.java
@@ -3,7 +3,6 @@ package com.fongmi.android.tv.ui.fragment;
 import android.annotation.SuppressLint;
 import android.os.Bundle;
 import android.view.LayoutInflater;
-import android.view.View;
 import android.view.ViewGroup;
 
 import androidx.annotation.NonNull;
@@ -21,7 +20,6 @@ import com.fongmi.android.tv.Product;
 import com.fongmi.android.tv.R;
 import com.fongmi.android.tv.api.config.VodConfig;
 import com.fongmi.android.tv.bean.Filter;
-import com.fongmi.android.tv.bean.Page;
 import com.fongmi.android.tv.bean.Result;
 import com.fongmi.android.tv.bean.Site;
 import com.fongmi.android.tv.bean.Style;
@@ -42,7 +40,6 @@ import com.fongmi.android.tv.utils.ResUtil;
 import com.github.catvod.utils.Prefers;
 import com.google.common.collect.Lists;
 
-import java.io.Serializable;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
@@ -56,9 +53,8 @@ public class VodFragment extends BaseFragment implements CustomScroller.Callback
     private CustomScroller mScroller;
     private SiteViewModel mViewModel;
     private List<Filter> mFilters;
-    private List<Page> mPages;
-    private boolean mOpen;
-    private Page mPage;
+    private boolean headerVisible;
+    private boolean filterVisible;
 
     public static VodFragment newInstance(String key, String typeId, Style style, HashMap<String, String> extend, boolean folder) {
         Bundle args = new Bundle();
@@ -77,32 +73,31 @@ public class VodFragment extends BaseFragment implements CustomScroller.Callback
     }
 
     private String getTypeId() {
-        return mPages.isEmpty() ? getArguments().getString("typeId") : getLastPage().getVodId();
-    }
-
-    private List<Filter> getFilter() {
-        return Filter.arrayFrom(Prefers.getString("filter_" + getKey() + "_" + getTypeId()));
+        return getArguments().getString("typeId");
     }
 
     private HashMap<String, String> getExtend() {
-        Serializable extend = getArguments().getSerializable("extend");
-        return extend == null ? new HashMap<>() : (HashMap<String, String>) extend;
+        return (HashMap<String, String>) getArguments().getSerializable("extend");
     }
 
     private boolean isFolder() {
         return getArguments().getBoolean("folder");
     }
 
+    private Style getStyle() {
+        return isFolder() ? Style.list() : getSite().getStyle(getArguments().getParcelable("style"));
+    }
+
     private Site getSite() {
         return VodConfig.get().getSite(getKey());
     }
 
-    private Page getLastPage() {
-        return mPages.get(mPages.size() - 1);
+    private List<Filter> getFilter() {
+        return Filter.arrayFrom(Prefers.getString("filter_" + getKey() + "_" + getTypeId()));
     }
 
-    private Style getStyle() {
-        return isFolder() ? Style.list() : getSite().getStyle(mPages.isEmpty() ? getArguments().getParcelable("style") : getLastPage().getStyle());
+    private TypeFragment getParent() {
+        return ((TypeFragment) getParentFragment());
     }
 
     @Override
@@ -112,16 +107,11 @@ public class VodFragment extends BaseFragment implements CustomScroller.Callback
 
     @Override
     protected void initView() {
-        mPages = new ArrayList<>();
         mExtends = getExtend();
         mFilters = getFilter();
         setRecyclerView();
         setViewModel();
         setFilters();
-    }
-
-    @Override
-    protected void initData() {
         getVideo();
     }
 
@@ -143,11 +133,10 @@ public class VodFragment extends BaseFragment implements CustomScroller.Callback
         mViewModel.result.observe(getViewLifecycleOwner(), result -> {
             boolean first = mScroller.first();
             int size = result.getList().size();
+            mBinding.progressLayout.showContent(first, size);
             if (size > 0) addVideo(result);
             mScroller.endLoading(result);
-            checkPosition(first);
             checkMore(size);
-            hideProgress();
         });
     }
 
@@ -176,7 +165,7 @@ public class VodFragment extends BaseFragment implements CustomScroller.Callback
         boolean first = "1".equals(page);
         if (first) mLast = null;
         if (first) showProgress();
-        int filterSize = mOpen ? mFilters.size() : 0;
+        int filterSize = filterVisible ? mFilters.size() : 0;
         boolean clear = first && mAdapter.size() > filterSize;
         if (clear) mAdapter.removeItems(filterSize, mAdapter.size() - filterSize);
         mViewModel.categoryContent(getKey(), typeId, page, true, mExtends);
@@ -188,14 +177,6 @@ public class VodFragment extends BaseFragment implements CustomScroller.Callback
         else addGrid(result.getList(), style);
     }
 
-    private void checkPosition(boolean first) {
-        if (mPage != null && mPage.getPosition() > 0) mBinding.recycler.hideHeader();
-        if (mPage != null && mPage.getPosition() < 1) mBinding.recycler.showHeader();
-        if (mPage != null) mBinding.recycler.setSelectedPosition(mPage.getPosition());
-        else if (first && !mOpen) mBinding.recycler.moveToTop();
-        mPage = null;
-    }
-
     private void checkMore(int count) {
         if (mScroller.isDisable() || count == 0 || mAdapter.size() >= 5) return;
         getVideo(getTypeId(), String.valueOf(mScroller.addPage()));
@@ -231,11 +212,7 @@ public class VodFragment extends BaseFragment implements CustomScroller.Callback
     }
 
     private void showProgress() {
-        if (!mOpen) mBinding.progress.getRoot().setVisibility(View.VISIBLE);
-    }
-
-    private void hideProgress() {
-        mBinding.progress.getRoot().setVisibility(View.GONE);
+        if (!filterVisible) mBinding.progressLayout.showProgress();
     }
 
     private void showFilter() {
@@ -243,48 +220,29 @@ public class VodFragment extends BaseFragment implements CustomScroller.Callback
         for (Filter filter : mFilters) rows.add(getRow(filter));
         App.post(() -> mBinding.recycler.scrollToPosition(0), 48);
         mAdapter.addAll(0, rows);
-        hideProgress();
     }
 
     private void hideFilter() {
         mAdapter.removeItems(0, mFilters.size());
     }
 
-    public void toggleFilter(boolean open) {
-        if (open) showFilter();
+    public void toggleFilter(boolean visible) {
+        this.filterVisible = visible;
+        if (visible) showFilter();
         else hideFilter();
-        mOpen = open;
     }
 
     public void onRefresh() {
         getVideo();
     }
 
-    public boolean canBack() {
-        return !mPages.isEmpty();
-    }
-
-    public void goBack() {
-        if (mPages.size() == 1) mBinding.recycler.setMoveTop(true);
-        mPages.remove(mPage = getLastPage());
-        onRefresh();
-    }
-
-    public boolean goRoot() {
-        if (mPages.isEmpty()) return false;
-        mPages.clear();
-        getVideo();
-        return true;
-    }
-
     @Override
     public void onItemClick(Vod item) {
         if (item.isAction()) {
             mViewModel.action(getKey(), item.getAction());
         } else if (item.isFolder()) {
-            mPages.add(Page.get(item, mBinding.recycler.getSelectedPosition()));
-            mBinding.recycler.setMoveTop(false);
-            getVideo(item.getVodId(), "1");
+            getParent().openFolder(item.getVodId());
+            headerVisible = mBinding.recycler.isHeaderVisible();
         } else {
             if (getSite().isIndex()) CollectActivity.start(requireActivity(), item.getVodName());
             else VideoActivity.start(requireActivity(), getKey(), item.getVodId(), item.getVodName(), item.getVodPic(), isFolder() ? item.getVodName() : null);
@@ -303,9 +261,16 @@ public class VodFragment extends BaseFragment implements CustomScroller.Callback
         getVideo(getTypeId(), page);
     }
 
+
     @Override
-    public void setUserVisibleHint(boolean isVisibleToUser) {
-        super.setUserVisibleHint(isVisibleToUser);
-        if (mBinding != null && !isVisibleToUser) mBinding.recycler.moveToTop();
+    public void onHiddenChanged(boolean hidden) {
+        super.onHiddenChanged(hidden);
+        if (hidden) {
+            mBinding.recycler.showHeader();
+        } else {
+            if (headerVisible) mBinding.recycler.showHeader();
+            else mBinding.recycler.hideHeader();
+            mBinding.recycler.requestFocus();
+        }
     }
 }
diff --git a/app/src/leanback/res/layout/fragment_folder.xml b/app/src/leanback/res/layout/fragment_folder.xml
new file mode 100644
index 000000000..beba12a85
--- /dev/null
+++ b/app/src/leanback/res/layout/fragment_folder.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <androidx.fragment.app.FragmentContainerView
+        android:id="@+id/container"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent" />
+
+</FrameLayout>
\ No newline at end of file
diff --git a/app/src/leanback/res/layout/fragment_vod.xml b/app/src/leanback/res/layout/fragment_vod.xml
index 8681257d6..724c3b4c8 100644
--- a/app/src/leanback/res/layout/fragment_vod.xml
+++ b/app/src/leanback/res/layout/fragment_vod.xml
@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
-<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<com.fongmi.android.tv.ui.custom.ProgressLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/progressLayout"
     android:layout_width="match_parent"
     android:layout_height="match_parent">
 
@@ -17,9 +18,4 @@
         app:focusOutEnd="true"
         app:focusOutFront="true" />
 
-    <include
-        android:id="@+id/progress"
-        layout="@layout/view_progress"
-        android:visibility="gone" />
-
-</FrameLayout>
\ No newline at end of file
+</com.fongmi.android.tv.ui.custom.ProgressLayout>
\ No newline at end of file