diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index c86e51670..e3bc5be00 100755
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -147,18 +147,6 @@
             android:label="@string/settings"
             android:theme="@style/AppTheme.Toolbar" />
 
-        <activity
-            android:name="com.hippo.ehviewer.ui.UConfigActivity"
-            android:configChanges="screenSize|uiMode"
-            android:label="@string/u_config"
-            android:theme="@style/AppTheme.Toolbar" />
-
-        <activity
-            android:name="com.hippo.ehviewer.ui.MyTagsActivity"
-            android:configChanges="screenSize|uiMode"
-            android:label="@string/my_tags"
-            android:theme="@style/AppTheme.Toolbar" />
-
         <activity
             android:name="com.hippo.ehviewer.shortcuts.ShortcutsActivity"
             android:excludeFromRecents="true"
diff --git a/app/src/main/java/com/hippo/ehviewer/preference/SignInRequiredPreference.java b/app/src/main/java/com/hippo/ehviewer/preference/SignInRequiredPreference.java
new file mode 100644
index 000000000..f916eb20b
--- /dev/null
+++ b/app/src/main/java/com/hippo/ehviewer/preference/SignInRequiredPreference.java
@@ -0,0 +1,75 @@
+/*
+ * Copyright 2019 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.preference;
+
+import android.annotation.SuppressLint;
+import android.content.Context;
+import android.util.AttributeSet;
+
+import androidx.preference.Preference;
+
+import com.hippo.ehviewer.EhApplication;
+import com.hippo.ehviewer.R;
+import com.hippo.ehviewer.client.EhCookieStore;
+import com.hippo.ehviewer.client.EhUrl;
+import com.hippo.ehviewer.ui.SettingsActivity;
+import com.hippo.ehviewer.ui.scene.BaseScene;
+
+import okhttp3.HttpUrl;
+
+public class SignInRequiredPreference extends Preference implements Preference.OnPreferenceClickListener {
+
+    @SuppressLint("StaticFieldLeak")
+    private SettingsActivity mActivity;
+
+    public SignInRequiredPreference(Context context) {
+        super(context);
+        init(context);
+    }
+
+    public SignInRequiredPreference(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        init(context);
+    }
+
+    public SignInRequiredPreference(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+        init(context);
+    }
+
+    private void init(Context context) {
+        mActivity = (SettingsActivity) context;
+        setOnPreferenceClickListener(this);
+    }
+
+    @Override
+    public boolean onPreferenceClick(Preference preference) {
+        EhCookieStore store = EhApplication.getEhCookieStore(getContext());
+        HttpUrl e = HttpUrl.get(EhUrl.HOST_E);
+        HttpUrl ex = HttpUrl.get(EhUrl.HOST_EX);
+
+        if (store.contains(e, EhCookieStore.KEY_IPD_MEMBER_ID) ||
+                store.contains(e, EhCookieStore.KEY_IPD_PASS_HASH) ||
+                store.contains(ex, EhCookieStore.KEY_IPD_MEMBER_ID) ||
+                store.contains(ex, EhCookieStore.KEY_IPD_PASS_HASH)) {
+            return false;
+        } else {
+            mActivity.showTip(R.string.error_please_login_first, BaseScene.LENGTH_SHORT);
+            return true;
+        }
+    }
+}
diff --git a/app/src/main/java/com/hippo/ehviewer/ui/fragment/AboutFragment.java b/app/src/main/java/com/hippo/ehviewer/ui/fragment/AboutFragment.java
index 75cc7ff45..6206d237c 100644
--- a/app/src/main/java/com/hippo/ehviewer/ui/fragment/AboutFragment.java
+++ b/app/src/main/java/com/hippo/ehviewer/ui/fragment/AboutFragment.java
@@ -28,7 +28,7 @@ import com.hippo.ehviewer.R;
 import com.hippo.util.AppHelper;
 import com.microsoft.appcenter.distribute.Distribute;
 
-public class AboutFragment extends BaseSettingsFragment {
+public class AboutFragment extends BasePreferenceFragment {
 
     private static final String KEY_AUTHOR = "author";
     //private static final String KEY_DONATE = "donate";
diff --git a/app/src/main/java/com/hippo/ehviewer/ui/fragment/AdvancedFragment.java b/app/src/main/java/com/hippo/ehviewer/ui/fragment/AdvancedFragment.java
index 714b07ef9..6c10a69ac 100644
--- a/app/src/main/java/com/hippo/ehviewer/ui/fragment/AdvancedFragment.java
+++ b/app/src/main/java/com/hippo/ehviewer/ui/fragment/AdvancedFragment.java
@@ -33,7 +33,6 @@ import com.hippo.ehviewer.EhApplication;
 import com.hippo.ehviewer.EhDB;
 import com.hippo.ehviewer.GetText;
 import com.hippo.ehviewer.R;
-import com.hippo.ehviewer.ui.SettingsActivity;
 import com.hippo.ehviewer.ui.scene.BaseScene;
 import com.hippo.util.ExceptionUtils;
 import com.hippo.util.LogCat;
@@ -50,7 +49,7 @@ import java.util.Arrays;
 import java.util.zip.ZipEntry;
 import java.util.zip.ZipOutputStream;
 
-public class AdvancedFragment extends BaseSettingsFragment {
+public class AdvancedFragment extends BasePreferenceFragment {
 
     private static final int REQUEST_CODE_EXPORT = 1;
     private static final int REQUEST_CODE_IMPORT = 2;
@@ -93,13 +92,13 @@ public class AdvancedFragment extends BaseSettingsFragment {
                 startActivityForResult(intent, REQUEST_DUMP_LOGCAT);
             } catch (Throwable e) {
                 ExceptionUtils.throwIfFatal(e);
-                ((SettingsActivity) requireActivity()).showTip(R.string.error_cant_find_activity, BaseScene.LENGTH_SHORT);
+                showTip(R.string.error_cant_find_activity, BaseScene.LENGTH_SHORT);
             }
             return true;
         } else if (KEY_CLEAR_MEMORY_CACHE.equals(key)) {
             ((EhApplication) getActivity().getApplication()).clearMemoryCache();
             Runtime.getRuntime().gc();
-            ((SettingsActivity) requireActivity()).showTip(R.string.settings_advanced_clear_memory_cache_done, BaseScene.LENGTH_SHORT);
+            showTip(R.string.settings_advanced_clear_memory_cache_done, BaseScene.LENGTH_SHORT);
         } else if (KEY_IMPORT_DATA.equals(key)) {
             Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
             intent.addCategory(Intent.CATEGORY_OPENABLE);
@@ -109,7 +108,7 @@ public class AdvancedFragment extends BaseSettingsFragment {
                 startActivityForResult(intent, REQUEST_CODE_IMPORT);
             } catch (Throwable e) {
                 ExceptionUtils.throwIfFatal(e);
-                ((SettingsActivity) requireActivity()).showTip(R.string.error_cant_find_activity, BaseScene.LENGTH_SHORT);
+                showTip(R.string.error_cant_find_activity, BaseScene.LENGTH_SHORT);
             }
             return true;
         } else if (KEY_EXPORT_DATA.equals(key)) {
@@ -122,7 +121,7 @@ public class AdvancedFragment extends BaseSettingsFragment {
                 startActivityForResult(intent, REQUEST_CODE_EXPORT);
             } catch (Throwable e) {
                 ExceptionUtils.throwIfFatal(e);
-                ((SettingsActivity) requireActivity()).showTip(R.string.error_cant_find_activity, BaseScene.LENGTH_SHORT);
+                showTip(R.string.error_cant_find_activity, BaseScene.LENGTH_SHORT);
             }
             return true;
         }
@@ -156,7 +155,7 @@ public class AdvancedFragment extends BaseSettingsFragment {
                                 if (alertDialog.isShowing()) {
                                     alertDialog.dismiss();
                                 }
-                                ((SettingsActivity) requireActivity()).showTip(
+                                showTip(
                                         (success)
                                                 ? GetText.getString(R.string.settings_advanced_export_data_to, uri.toString())
                                                 : GetText.getString(R.string.settings_advanced_export_data_failed),
@@ -164,7 +163,7 @@ public class AdvancedFragment extends BaseSettingsFragment {
                             });
                         }).start();
                     } catch (Exception e) {
-                        ((SettingsActivity) requireActivity()).showTip(R.string.settings_advanced_export_data_failed, BaseScene.LENGTH_SHORT);
+                        showTip(R.string.settings_advanced_export_data_failed, BaseScene.LENGTH_SHORT);
                     }
                 }
             }
@@ -191,14 +190,14 @@ public class AdvancedFragment extends BaseSettingsFragment {
                                     alertDialog.dismiss();
                                 }
                                 if (null == error) {
-                                    ((SettingsActivity) requireActivity()).showTip(getString(R.string.settings_advanced_import_data_successfully), BaseScene.LENGTH_SHORT);
+                                    showTip(getString(R.string.settings_advanced_import_data_successfully), BaseScene.LENGTH_SHORT);
                                 } else {
-                                    ((SettingsActivity) requireActivity()).showTip(error, BaseScene.LENGTH_SHORT);
+                                    showTip(error, BaseScene.LENGTH_SHORT);
                                 }
                             });
                         }).start();
                     } catch (Exception e) {
-                        ((SettingsActivity) requireActivity()).showTip(e.getLocalizedMessage(), BaseScene.LENGTH_SHORT);
+                        showTip(e.getLocalizedMessage(), BaseScene.LENGTH_SHORT);
                     }
                 }
             }
@@ -276,11 +275,11 @@ public class AdvancedFragment extends BaseSettingsFragment {
                         if (!finished) {
                             finished = LogCat.save(requireActivity().getContentResolver().openOutputStream(uri));
                         }
-                        ((SettingsActivity) requireActivity()).showTip(
+                        showTip(
                                 finished ? getString(R.string.settings_advanced_dump_logcat_to, uri.toString()) :
                                         getString(R.string.settings_advanced_dump_logcat_failed), BaseScene.LENGTH_SHORT);
                     } catch (Exception e) {
-                        ((SettingsActivity) requireActivity()).showTip(getString(R.string.settings_advanced_dump_logcat_failed), BaseScene.LENGTH_SHORT);
+                        showTip(getString(R.string.settings_advanced_dump_logcat_failed), BaseScene.LENGTH_SHORT);
                     }
                 }
             }
diff --git a/app/src/main/java/com/hippo/ehviewer/ui/fragment/BaseFragment.java b/app/src/main/java/com/hippo/ehviewer/ui/fragment/BaseFragment.java
new file mode 100644
index 000000000..4e4f78a3c
--- /dev/null
+++ b/app/src/main/java/com/hippo/ehviewer/ui/fragment/BaseFragment.java
@@ -0,0 +1,21 @@
+package com.hippo.ehviewer.ui.fragment;
+
+import androidx.annotation.StringRes;
+import androidx.fragment.app.Fragment;
+
+import com.hippo.ehviewer.ui.SettingsActivity;
+
+public class BaseFragment extends Fragment {
+
+    public void setTitle(@StringRes int string) {
+        requireActivity().setTitle(string);
+    }
+
+    public void showTip(@StringRes int id, int length) {
+        ((SettingsActivity) requireActivity()).showTip(getString(id), length);
+    }
+
+    public void showTip(CharSequence message, int length) {
+        ((SettingsActivity) requireActivity()).showTip(message, length);
+    }
+}
diff --git a/app/src/main/java/com/hippo/ehviewer/ui/fragment/BaseSettingsFragment.java b/app/src/main/java/com/hippo/ehviewer/ui/fragment/BasePreferenceFragment.java
similarity index 66%
rename from app/src/main/java/com/hippo/ehviewer/ui/fragment/BaseSettingsFragment.java
rename to app/src/main/java/com/hippo/ehviewer/ui/fragment/BasePreferenceFragment.java
index 5d4bb9d9f..5a945866c 100644
--- a/app/src/main/java/com/hippo/ehviewer/ui/fragment/BaseSettingsFragment.java
+++ b/app/src/main/java/com/hippo/ehviewer/ui/fragment/BasePreferenceFragment.java
@@ -6,9 +6,10 @@ import androidx.annotation.Nullable;
 import androidx.annotation.StringRes;
 import androidx.preference.Preference;
 
+import com.hippo.ehviewer.ui.SettingsActivity;
 import com.takisoft.preferencex.PreferenceFragmentCompat;
 
-public class BaseSettingsFragment extends PreferenceFragmentCompat
+public class BasePreferenceFragment extends PreferenceFragmentCompat
         implements Preference.OnPreferenceClickListener, Preference.OnPreferenceChangeListener {
     @Override
     public boolean onPreferenceChange(Preference preference, Object newValue) {
@@ -28,4 +29,12 @@ public class BaseSettingsFragment extends PreferenceFragmentCompat
     public void setTitle(@StringRes int string) {
         requireActivity().setTitle(string);
     }
+
+    public void showTip(@StringRes int id, int length) {
+        ((SettingsActivity) requireActivity()).showTip(getString(id), length);
+    }
+
+    public void showTip(CharSequence message, int length) {
+        ((SettingsActivity) requireActivity()).showTip(message, length);
+    }
 }
diff --git a/app/src/main/java/com/hippo/ehviewer/ui/fragment/DownloadFragment.java b/app/src/main/java/com/hippo/ehviewer/ui/fragment/DownloadFragment.java
index cd72cc779..02c02c782 100644
--- a/app/src/main/java/com/hippo/ehviewer/ui/fragment/DownloadFragment.java
+++ b/app/src/main/java/com/hippo/ehviewer/ui/fragment/DownloadFragment.java
@@ -27,12 +27,11 @@ import androidx.preference.Preference;
 import com.hippo.ehviewer.R;
 import com.hippo.ehviewer.Settings;
 import com.hippo.ehviewer.ui.CommonOperations;
-import com.hippo.ehviewer.ui.SettingsActivity;
 import com.hippo.ehviewer.ui.scene.BaseScene;
 import com.hippo.unifile.UniFile;
 import com.hippo.util.ExceptionUtils;
 
-public class DownloadFragment extends BaseSettingsFragment {
+public class DownloadFragment extends BasePreferenceFragment {
 
     public static final int REQUEST_CODE_PICK_IMAGE_DIR_L = 1;
 
@@ -95,7 +94,7 @@ public class DownloadFragment extends BaseSettingsFragment {
             startActivityForResult(intent, REQUEST_CODE_PICK_IMAGE_DIR_L);
         } catch (Throwable e) {
             ExceptionUtils.throwIfFatal(e);
-            ((SettingsActivity) requireActivity()).showTip(R.string.error_cant_find_activity, BaseScene.LENGTH_SHORT);
+            showTip(R.string.error_cant_find_activity, BaseScene.LENGTH_SHORT);
         }
     }
 
@@ -113,7 +112,7 @@ public class DownloadFragment extends BaseSettingsFragment {
                             Settings.putDownloadLocation(uniFile);
                             onUpdateDownloadLocation();
                         } else {
-                            ((SettingsActivity) requireActivity()).showTip(R.string.settings_download_cant_get_download_location,
+                            showTip(R.string.settings_download_cant_get_download_location,
                                     BaseScene.LENGTH_SHORT);
                         }
                     }
diff --git a/app/src/main/java/com/hippo/ehviewer/ui/fragment/EhFragment.java b/app/src/main/java/com/hippo/ehviewer/ui/fragment/EhFragment.java
index 253a376d1..7df6576d1 100644
--- a/app/src/main/java/com/hippo/ehviewer/ui/fragment/EhFragment.java
+++ b/app/src/main/java/com/hippo/ehviewer/ui/fragment/EhFragment.java
@@ -29,7 +29,7 @@ import com.hippo.ehviewer.R;
 import com.hippo.ehviewer.Settings;
 import com.hippo.ehviewer.client.EhTagDatabase;
 
-public class EhFragment extends BaseSettingsFragment {
+public class EhFragment extends BasePreferenceFragment {
 
     @Override
     public void onCreatePreferencesFix(@Nullable Bundle savedInstanceState, String rootKey) {
diff --git a/app/src/main/java/com/hippo/ehviewer/ui/fragment/FilterFragment.java b/app/src/main/java/com/hippo/ehviewer/ui/fragment/FilterFragment.java
index 901dfd207..b63790b6c 100644
--- a/app/src/main/java/com/hippo/ehviewer/ui/fragment/FilterFragment.java
+++ b/app/src/main/java/com/hippo/ehviewer/ui/fragment/FilterFragment.java
@@ -17,9 +17,7 @@ import android.widget.TextView;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
-import androidx.annotation.StringRes;
 import androidx.appcompat.app.AlertDialog;
-import androidx.fragment.app.Fragment;
 import androidx.recyclerview.widget.DefaultItemAnimator;
 import androidx.recyclerview.widget.LinearLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
@@ -41,7 +39,7 @@ import com.hippo.yorozuya.ViewUtils;
 
 import java.util.List;
 
-public class FilterFragment extends Fragment {
+public class FilterFragment extends BaseFragment {
 
     @Nullable
     private ViewTransition mViewTransition;
@@ -452,7 +450,4 @@ public class FilterFragment extends Fragment {
         }
     }
 
-    public void setTitle(@StringRes int string) {
-        requireActivity().setTitle(string);
-    }
 }
diff --git a/app/src/main/java/com/hippo/ehviewer/ui/fragment/HostsFragment.java b/app/src/main/java/com/hippo/ehviewer/ui/fragment/HostsFragment.java
index 637dd2724..fd9d6fb15 100644
--- a/app/src/main/java/com/hippo/ehviewer/ui/fragment/HostsFragment.java
+++ b/app/src/main/java/com/hippo/ehviewer/ui/fragment/HostsFragment.java
@@ -11,10 +11,8 @@ import android.widget.TextView;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
-import androidx.annotation.StringRes;
 import androidx.appcompat.app.AlertDialog;
 import androidx.fragment.app.DialogFragment;
-import androidx.fragment.app.Fragment;
 import androidx.recyclerview.widget.LinearLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
 
@@ -33,7 +31,7 @@ import com.hippo.yorozuya.ViewUtils;
 import java.util.List;
 import java.util.Locale;
 
-public class HostsFragment extends Fragment
+public class HostsFragment extends BaseFragment
         implements View.OnClickListener {
 
     private static final String DIALOG_TAG_ADD_HOST = AddHostDialogFragment.class.getName();
@@ -84,8 +82,6 @@ public class HostsFragment extends Fragment
 
         fab.setOnClickListener(this);
 
-        updateView(false);
-
         return view;
     }
 
@@ -276,7 +272,4 @@ public class HostsFragment extends Fragment
         }
     }
 
-    public void setTitle(@StringRes int string) {
-        requireActivity().setTitle(string);
-    }
 }
diff --git a/app/src/main/java/com/hippo/ehviewer/ui/MyTagsActivity.java b/app/src/main/java/com/hippo/ehviewer/ui/fragment/MyTagsFragment.java
similarity index 57%
rename from app/src/main/java/com/hippo/ehviewer/ui/MyTagsActivity.java
rename to app/src/main/java/com/hippo/ehviewer/ui/fragment/MyTagsFragment.java
index 3bbf820c8..c19e223a1 100644
--- a/app/src/main/java/com/hippo/ehviewer/ui/MyTagsActivity.java
+++ b/app/src/main/java/com/hippo/ehviewer/ui/fragment/MyTagsFragment.java
@@ -1,30 +1,16 @@
-/*
- * Copyright 2019 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;
+package com.hippo.ehviewer.ui.fragment;
 
 import android.annotation.SuppressLint;
 import android.graphics.Bitmap;
 import android.os.Bundle;
-import android.view.MenuItem;
+import android.view.LayoutInflater;
 import android.view.View;
+import android.view.ViewGroup;
 import android.webkit.CookieManager;
 import android.webkit.WebView;
 import android.webkit.WebViewClient;
 
+import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 
 import com.hippo.ehviewer.EhApplication;
@@ -37,14 +23,35 @@ import com.hippo.widget.ProgressView;
 import okhttp3.Cookie;
 import okhttp3.HttpUrl;
 
-public class MyTagsActivity extends ToolbarActivity {
+public class MyTagsFragment extends BaseFragment {
 
+    private WebView webView;
     private ProgressView progress;
     private String url;
 
     @SuppressLint("SetJavaScriptEnabled")
+    @Nullable
     @Override
-    protected void onCreate(@Nullable Bundle savedInstanceState) {
+    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.activity_webview, container, false);
+        setTitle(R.string.my_tags);
+        webView = view.findViewById(R.id.webview);
+        webView.getSettings().setJavaScriptEnabled(true);
+        webView.setWebViewClient(new MyTagsWebViewClient());
+        webView.setWebChromeClient(new DialogWebChromeClient(requireContext()));
+        progress = view.findViewById(R.id.progress);
+        return view;
+    }
+
+    @Override
+    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+        progress.setVisibility(View.VISIBLE);
+        webView.loadUrl(url);
+    }
+
+    @Override
+    public void onCreate(@Nullable Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
         // http://stackoverflow.com/questions/32284642/how-to-handle-an-uncatched-exception
@@ -56,38 +63,17 @@ public class MyTagsActivity extends ToolbarActivity {
 
         // Copy cookies from okhttp cookie store to CookieManager
         url = EhUrl.getMyTagsUrl();
-        EhCookieStore store = EhApplication.getEhCookieStore(this);
+        EhCookieStore store = EhApplication.getEhCookieStore(requireContext());
         for (Cookie cookie : store.getCookies(HttpUrl.parse(url))) {
             cookieManager.setCookie(url, cookie.toString());
         }
-
-        setContentView(R.layout.activity_webview);
-        setTitle(R.string.my_tags);
-        setNavigationIcon(R.drawable.v_arrow_left_dark_x24);
-        WebView webView = findViewById(R.id.webview);
-        webView.getSettings().setJavaScriptEnabled(true);
-        webView.setWebViewClient(new MyTagsWebViewClient());
-        webView.setWebChromeClient(new DialogWebChromeClient(this));
-        webView.loadUrl(url);
-        progress = findViewById(R.id.progress);
-    }
-
-    @Override
-    public boolean onOptionsItemSelected(MenuItem item) {
-        switch (item.getItemId()) {
-            case android.R.id.home:
-                finish();
-                return true;
-            default:
-                return super.onOptionsItemSelected(item);
-        }
     }
 
     private class MyTagsWebViewClient extends WebViewClient {
         @Override
         public boolean shouldOverrideUrlLoading(WebView view, String url) {
             // Never load other urls
-            return !url.equals(MyTagsActivity.this.url);
+            return !url.equals(MyTagsFragment.this.url);
         }
 
         @Override
diff --git a/app/src/main/java/com/hippo/ehviewer/ui/fragment/PrivacyFragment.java b/app/src/main/java/com/hippo/ehviewer/ui/fragment/PrivacyFragment.java
index 82fe19e2c..cfffd7dc7 100644
--- a/app/src/main/java/com/hippo/ehviewer/ui/fragment/PrivacyFragment.java
+++ b/app/src/main/java/com/hippo/ehviewer/ui/fragment/PrivacyFragment.java
@@ -14,7 +14,7 @@ import com.hippo.ehviewer.Settings;
  * Created by Mo10 on 2018/2/10.
  */
 
-public class PrivacyFragment extends BaseSettingsFragment {
+public class PrivacyFragment extends BasePreferenceFragment {
     private static final String KEY_PATTERN_PROTECTION = "pattern_protection";
 
     @Override
diff --git a/app/src/main/java/com/hippo/ehviewer/ui/fragment/ReadFragment.java b/app/src/main/java/com/hippo/ehviewer/ui/fragment/ReadFragment.java
index 61db05c0c..03e1bad3c 100644
--- a/app/src/main/java/com/hippo/ehviewer/ui/fragment/ReadFragment.java
+++ b/app/src/main/java/com/hippo/ehviewer/ui/fragment/ReadFragment.java
@@ -22,7 +22,7 @@ import androidx.annotation.Nullable;
 
 import com.hippo.ehviewer.R;
 
-public class ReadFragment extends BaseSettingsFragment {
+public class ReadFragment extends BasePreferenceFragment {
 
     @Override
     public void onCreatePreferencesFix(@Nullable Bundle savedInstanceState, String rootKey) {
diff --git a/app/src/main/java/com/hippo/ehviewer/ui/fragment/SetSecurityFragment.java b/app/src/main/java/com/hippo/ehviewer/ui/fragment/SetSecurityFragment.java
index 6cfcd3dfe..e571750ed 100644
--- a/app/src/main/java/com/hippo/ehviewer/ui/fragment/SetSecurityFragment.java
+++ b/app/src/main/java/com/hippo/ehviewer/ui/fragment/SetSecurityFragment.java
@@ -9,9 +9,7 @@ import android.widget.CheckBox;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
-import androidx.annotation.StringRes;
 import androidx.biometric.BiometricManager;
-import androidx.fragment.app.Fragment;
 
 import com.hippo.ehviewer.R;
 import com.hippo.ehviewer.Settings;
@@ -19,7 +17,7 @@ import com.hippo.widget.lockpattern.LockPatternUtils;
 import com.hippo.widget.lockpattern.LockPatternView;
 import com.hippo.yorozuya.ViewUtils;
 
-public class SetSecurityFragment extends Fragment implements View.OnClickListener {
+public class SetSecurityFragment extends BaseFragment implements View.OnClickListener {
 
     @Nullable
     private LockPatternView mPatternView;
@@ -82,8 +80,4 @@ public class SetSecurityFragment extends Fragment implements View.OnClickListene
             requireActivity().onBackPressed();
         }
     }
-
-    public void setTitle(@StringRes int string) {
-        requireActivity().setTitle(string);
-    }
 }
diff --git a/app/src/main/java/com/hippo/ehviewer/ui/fragment/SettingsFragment.java b/app/src/main/java/com/hippo/ehviewer/ui/fragment/SettingsFragment.java
index 5a87e5961..d137aed52 100644
--- a/app/src/main/java/com/hippo/ehviewer/ui/fragment/SettingsFragment.java
+++ b/app/src/main/java/com/hippo/ehviewer/ui/fragment/SettingsFragment.java
@@ -6,7 +6,7 @@ import androidx.annotation.Nullable;
 
 import com.hippo.ehviewer.R;
 
-public class SettingsFragment extends BaseSettingsFragment {
+public class SettingsFragment extends BasePreferenceFragment {
     @Override
     public void onCreatePreferencesFix(@Nullable Bundle savedInstanceState, String rootKey) {
         addPreferencesFromResource(R.xml.settings_headers);
diff --git a/app/src/main/java/com/hippo/ehviewer/ui/UConfigActivity.java b/app/src/main/java/com/hippo/ehviewer/ui/fragment/UConfigFragment.java
similarity index 67%
rename from app/src/main/java/com/hippo/ehviewer/ui/UConfigActivity.java
rename to app/src/main/java/com/hippo/ehviewer/ui/fragment/UConfigFragment.java
index b105b0a4e..0b2e8244b 100644
--- a/app/src/main/java/com/hippo/ehviewer/ui/UConfigActivity.java
+++ b/app/src/main/java/com/hippo/ehviewer/ui/fragment/UConfigFragment.java
@@ -1,49 +1,33 @@
-/*
- * Copyright 2018 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;
-
-/*
- * Created by Hippo on 2018/2/9.
- */
+package com.hippo.ehviewer.ui.fragment;
 
 import android.annotation.SuppressLint;
 import android.graphics.Bitmap;
 import android.os.Bundle;
+import android.view.LayoutInflater;
 import android.view.Menu;
+import android.view.MenuInflater;
 import android.view.MenuItem;
 import android.view.View;
+import android.view.ViewGroup;
 import android.webkit.CookieManager;
 import android.webkit.WebView;
 import android.webkit.WebViewClient;
 
+import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 
-import com.google.android.material.snackbar.Snackbar;
 import com.hippo.ehviewer.EhApplication;
 import com.hippo.ehviewer.R;
 import com.hippo.ehviewer.client.EhCookieStore;
 import com.hippo.ehviewer.client.EhUrl;
+import com.hippo.ehviewer.ui.scene.BaseScene;
 import com.hippo.ehviewer.widget.DialogWebChromeClient;
 import com.hippo.widget.ProgressView;
 
 import okhttp3.Cookie;
 import okhttp3.HttpUrl;
 
-public class UConfigActivity extends ToolbarActivity {
+public class UConfigFragment extends BaseFragment {
 
     private WebView webView;
     private ProgressView progress;
@@ -51,9 +35,31 @@ public class UConfigActivity extends ToolbarActivity {
     private boolean loaded;
 
     @SuppressLint("SetJavaScriptEnabled")
+    @Nullable
     @Override
-    protected void onCreate(@Nullable Bundle savedInstanceState) {
+    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.activity_webview, container, false);
+        setTitle(R.string.u_config);
+        webView = view.findViewById(R.id.webview);
+        webView.getSettings().setJavaScriptEnabled(true);
+        webView.setWebViewClient(new UConfigWebViewClient());
+        webView.setWebChromeClient(new DialogWebChromeClient(requireContext()));
+        progress = view.findViewById(R.id.progress);
+        return view;
+    }
+
+    @Override
+    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+        progress.setVisibility(View.VISIBLE);
+        webView.loadUrl(url);
+        showTip(R.string.apply_tip, BaseScene.LENGTH_LONG);
+    }
+
+    @Override
+    public void onCreate(@Nullable Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
+        setHasOptionsMenu(true);
 
         // http://stackoverflow.com/questions/32284642/how-to-handle-an-uncatched-exception
         CookieManager cookieManager = CookieManager.getInstance();
@@ -64,22 +70,10 @@ public class UConfigActivity extends ToolbarActivity {
 
         // Copy cookies from okhttp cookie store to CookieManager
         url = EhUrl.getUConfigUrl();
-        EhCookieStore store = EhApplication.getEhCookieStore(this);
+        EhCookieStore store = EhApplication.getEhCookieStore(requireContext());
         for (Cookie cookie : store.getCookies(HttpUrl.parse(url))) {
             cookieManager.setCookie(url, cookie.toString());
         }
-
-        setContentView(R.layout.activity_webview);
-        setTitle(R.string.u_config);
-        setNavigationIcon(R.drawable.v_arrow_left_dark_x24);
-        webView = findViewById(R.id.webview);
-        webView.getSettings().setJavaScriptEnabled(true);
-        webView.setWebViewClient(new UConfigWebViewClient());
-        webView.setWebChromeClient(new DialogWebChromeClient(this));
-        webView.loadUrl(url);
-        progress = findViewById(R.id.progress);
-
-        Snackbar.make(webView, R.string.apply_tip, Snackbar.LENGTH_LONG).show();
     }
 
     private void apply() {
@@ -91,26 +85,20 @@ public class UConfigActivity extends ToolbarActivity {
     }
 
     @Override
-    public boolean onCreateOptionsMenu(Menu menu) {
-        super.onCreateOptionsMenu(menu);
-        getMenuInflater().inflate(R.menu.activity_u_config, menu);
-        return true;
+    public void onCreateOptionsMenu(@NonNull Menu menu, @NonNull MenuInflater inflater) {
+        super.onCreateOptionsMenu(menu, inflater);
+        inflater.inflate(R.menu.activity_u_config, menu);
     }
 
     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
-        switch (item.getItemId()) {
-            case android.R.id.home:
-                finish();
-                return true;
-            case R.id.action_apply:
-                if (loaded) {
-                    apply();
-                }
-                return true;
-            default:
-                return super.onOptionsItemSelected(item);
+        if (item.getItemId() == R.id.action_apply) {
+            if (loaded) {
+                apply();
+            }
+            return true;
         }
+        return super.onOptionsItemSelected(item);
     }
 
     private Cookie longLive(Cookie cookie) {
@@ -124,8 +112,8 @@ public class UConfigActivity extends ToolbarActivity {
     }
 
     @Override
-    protected void onDestroy() {
-        super.onDestroy();
+    public void onDestroyView() {
+        super.onDestroyView();
         webView.destroy();
 
         // Put cookies back to okhttp cookie store
@@ -133,9 +121,12 @@ public class UConfigActivity extends ToolbarActivity {
         String cookiesString = cookieManager.getCookie(url);
 
         if (cookiesString != null && !cookiesString.isEmpty()) {
-            EhCookieStore store = EhApplication.getEhCookieStore(this);
+            EhCookieStore store = EhApplication.getEhCookieStore(requireContext());
             HttpUrl eUrl = HttpUrl.parse(EhUrl.HOST_E);
             HttpUrl exUrl = HttpUrl.parse(EhUrl.HOST_EX);
+            if (eUrl == null || exUrl == null) {
+                return;
+            }
 
             // The cookies saved in the uconfig page should be shared between e and ex
             for (String header : cookiesString.split(";")) {
diff --git a/app/src/main/res/xml/eh_settings.xml b/app/src/main/res/xml/eh_settings.xml
index 9115f22bb..c9ca676b6 100644
--- a/app/src/main/res/xml/eh_settings.xml
+++ b/app/src/main/res/xml/eh_settings.xml
@@ -38,18 +38,18 @@
         app:entryValues="@array/gallery_site_entry_values"
         app:iconSpaceReserved="false" />
 
-    <com.hippo.ehviewer.preference.SignInRequiredActivityPreference
+    <com.hippo.ehviewer.preference.SignInRequiredPreference
         android:key="u_config"
         android:summary="@string/settings_u_config_summary"
         android:title="@string/settings_u_config"
-        app:activity="com.hippo.ehviewer.ui.UConfigActivity"
+        android:fragment="com.hippo.ehviewer.ui.fragment.UConfigFragment"
         app:iconSpaceReserved="false" />
 
-    <com.hippo.ehviewer.preference.SignInRequiredActivityPreference
+    <com.hippo.ehviewer.preference.SignInRequiredPreference
         android:key="my_tags"
         android:summary="@string/settings_my_tags_summary"
         android:title="@string/settings_my_tags"
-        app:activity="com.hippo.ehviewer.ui.MyTagsActivity"
+        android:fragment="com.hippo.ehviewer.ui.fragment.MyTagsFragment"
         app:iconSpaceReserved="false" />
 
     <com.takisoft.preferencex.SimpleMenuPreference