diff --git a/app/src/main/java/com/hippo/ehviewer/ui/annotation/DrawerLifeCircle.java b/app/src/main/java/com/hippo/ehviewer/ui/annotation/DrawerLifeCircle.java
deleted file mode 100644
index 43c211151..000000000
--- a/app/src/main/java/com/hippo/ehviewer/ui/annotation/DrawerLifeCircle.java
+++ /dev/null
@@ -1,37 +0,0 @@
-/*
- * Copyright 2016 Hippo Seven
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.hippo.ehviewer.ui.annotation;
-
-import android.os.Bundle;
-import android.view.LayoutInflater;
-import android.view.ViewGroup;
-
-import androidx.fragment.app.Fragment;
-
-import java.lang.annotation.ElementType;
-import java.lang.annotation.Retention;
-import java.lang.annotation.RetentionPolicy;
-import java.lang.annotation.Target;
-
-/**
- * Created in {@link Fragment#onCreateView(LayoutInflater, ViewGroup, Bundle)},
- * destroyed in {@link Fragment#onDestroyView()}.
- */
-@Retention(RetentionPolicy.SOURCE)
-@Target({ElementType.FIELD})
-public @interface DrawerLifeCircle {
-}
diff --git a/app/src/main/java/com/hippo/ehviewer/ui/annotation/ViewLifeCircle.java b/app/src/main/java/com/hippo/ehviewer/ui/annotation/ViewLifeCircle.java
deleted file mode 100644
index 23291438e..000000000
--- a/app/src/main/java/com/hippo/ehviewer/ui/annotation/ViewLifeCircle.java
+++ /dev/null
@@ -1,37 +0,0 @@
-/*
- * Copyright 2016 Hippo Seven
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.hippo.ehviewer.ui.annotation;
-
-import android.os.Bundle;
-import android.view.LayoutInflater;
-import android.view.ViewGroup;
-
-import androidx.fragment.app.Fragment;
-
-import java.lang.annotation.ElementType;
-import java.lang.annotation.Retention;
-import java.lang.annotation.RetentionPolicy;
-import java.lang.annotation.Target;
-
-/**
- * Created in {@link Fragment#onCreateView(LayoutInflater, ViewGroup, Bundle)},
- * destroyed in {@link Fragment#onDestroyView()}.
- */
-@Retention(RetentionPolicy.SOURCE)
-@Target({ElementType.FIELD})
-public @interface ViewLifeCircle {
-}
diff --git a/app/src/main/java/com/hippo/ehviewer/ui/annotation/WholeLifeCircle.java b/app/src/main/java/com/hippo/ehviewer/ui/annotation/WholeLifeCircle.java
deleted file mode 100644
index f9aca5533..000000000
--- a/app/src/main/java/com/hippo/ehviewer/ui/annotation/WholeLifeCircle.java
+++ /dev/null
@@ -1,36 +0,0 @@
-/*
- * Copyright 2016 Hippo Seven
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.hippo.ehviewer.ui.annotation;
-
-import android.app.Activity;
-import android.os.Bundle;
-
-import androidx.fragment.app.Fragment;
-
-import java.lang.annotation.ElementType;
-import java.lang.annotation.Retention;
-import java.lang.annotation.RetentionPolicy;
-import java.lang.annotation.Target;
-
-/**
- * Created in {@link Fragment#onCreate(Bundle)} or {@link Activity#onCreate(Bundle)},
- * destroyed in {@link Fragment#onDestroy()} or {@link Activity#onDestroy()}.
- */
-@Retention(RetentionPolicy.SOURCE)
-@Target({ElementType.FIELD})
-public @interface WholeLifeCircle {
-}
diff --git a/app/src/main/java/com/hippo/ehviewer/ui/scene/FavoritesScene.kt b/app/src/main/java/com/hippo/ehviewer/ui/scene/FavoritesScene.kt
index 8aaae526b..d0b976afa 100644
--- a/app/src/main/java/com/hippo/ehviewer/ui/scene/FavoritesScene.kt
+++ b/app/src/main/java/com/hippo/ehviewer/ui/scene/FavoritesScene.kt
@@ -57,9 +57,6 @@ import com.hippo.ehviewer.client.data.FavListUrlBuilder
 import com.hippo.ehviewer.client.data.GalleryInfo
 import com.hippo.ehviewer.client.parser.FavoritesParser
 import com.hippo.ehviewer.ui.CommonOperations
-import com.hippo.ehviewer.ui.annotation.DrawerLifeCircle
-import com.hippo.ehviewer.ui.annotation.ViewLifeCircle
-import com.hippo.ehviewer.ui.annotation.WholeLifeCircle
 import com.hippo.ehviewer.widget.GalleryInfoContentHelper
 import com.hippo.widget.ContentLayout
 import com.hippo.widget.FabLayout
@@ -85,33 +82,24 @@ class FavoritesScene : SearchBarScene(), OnDragHandlerListener, OnClickFabListen
     var limit // -1 for error
             = 0
 
-    @ViewLifeCircle
     private var mRecyclerView: EasyRecyclerView? = null
 
-    @ViewLifeCircle
     private var mFabLayout: FabLayout? = null
 
-    @ViewLifeCircle
     private var mAdapter: FavoritesAdapter? = null
 
-    @ViewLifeCircle
     private var mHelper: FavoritesHelper? = null
     private var mActionFabDrawable: AddDeleteDrawable? = null
     private var mDrawerLayout: DrawerLayout? = null
 
-    @DrawerLifeCircle
     private var mDrawerAdapter: FavDrawerAdapter? = null
 
-    @WholeLifeCircle
     private var mClient: EhClient? = null
 
-    @WholeLifeCircle
     private var mFavCatArray: Array<String>? = Settings.getFavCat()
 
-    @WholeLifeCircle
     private var mFavCountArray: IntArray? = Settings.getFavCount()
 
-    @WholeLifeCircle
     private var mUrlBuilder: FavListUrlBuilder? = null
     private val showNormalFabsRunnable = Runnable {
         if (mFabLayout != null) {
diff --git a/app/src/main/java/com/hippo/ehviewer/ui/scene/GalleryDetailScene.kt b/app/src/main/java/com/hippo/ehviewer/ui/scene/GalleryDetailScene.kt
index b94abd518..1560997ef 100755
--- a/app/src/main/java/com/hippo/ehviewer/ui/scene/GalleryDetailScene.kt
+++ b/app/src/main/java/com/hippo/ehviewer/ui/scene/GalleryDetailScene.kt
@@ -91,7 +91,6 @@ import com.hippo.ehviewer.spider.SpiderDen
 import com.hippo.ehviewer.ui.CommonOperations
 import com.hippo.ehviewer.ui.GalleryInfoBottomSheet
 import com.hippo.ehviewer.ui.MainActivity
-import com.hippo.ehviewer.ui.annotation.WholeLifeCircle
 import com.hippo.ehviewer.ui.scene.GalleryListScene.Companion.getStartArgs
 import com.hippo.ehviewer.widget.GalleryRatingBar
 import com.hippo.ehviewer.widget.GalleryRatingBar.OnUserRateListener
@@ -125,7 +124,6 @@ class GalleryDetailScene : CollapsingToolbarScene(), View.OnClickListener, Downl
     private var mViewTransition: ViewTransition? = null
     private var mViewTransition2: ViewTransition? = null
 
-    @WholeLifeCircle
     private var mDownloadState = 0
     private var mAction: String? = null
     private var mGalleryInfo: GalleryInfo? = null