diff --git a/小米便签-维护与开发/AndroidManifest.xml b/小米便签-维护与开发/AndroidManifest.xml
index 4c98fc0..c748c14 100644
--- a/小米便签-维护与开发/AndroidManifest.xml
+++ b/小米便签-维护与开发/AndroidManifest.xml
@@ -28,6 +28,7 @@
             android:configChanges="keyboardHidden|orientation|screenSize"
             android:label="@string/app_name"
             android:launchMode="singleTop"
+            android:theme="@style/Theme.AppCompat.Light.DarkActionBar"
             android:uiOptions="splitActionBarWhenNarrow"
             android:windowSoftInputMode="adjustPan"
             android:exported="true">
@@ -42,7 +43,7 @@
             android:name=".ui.NoteEditActivity"
             android:configChanges="keyboardHidden|orientation|screenSize"
             android:launchMode="singleTop"
-
+            android:theme="@style/Theme.AppCompat.Light.DarkActionBar"
             android:exported="true">
 
             <intent-filter >
diff --git a/小米便签-维护与开发/res/values/styles.xml b/小米便签-维护与开发/res/values/styles.xml
index e67dc83..c26447f 100644
--- a/小米便签-维护与开发/res/values/styles.xml
+++ b/小米便签-维护与开发/res/values/styles.xml
@@ -48,7 +48,22 @@
         <item name="android:textColor">@android:color/black</item>
     </style>
 
+    <style name="HighlightTextAppearancePrimary">
+        <item name="android:textSize">@dimen/text_font_size_normal</item>
+        <item name="android:textColor">@color/primary_text_dark</item>
+    </style>
+
+    <style name="HighlightTextAppearanceSecondary">
+        <item name="android:textSize">@dimen/text_font_size_small</item>
+        <item name="android:textColor">@color/secondary_text_dark</item>
+    </style>
+
+    <style name="NoteTheme" parent="@android:style/Theme.Holo.Light">
+        <item name="android:actionBarStyle">@style/NoteActionBarStyle</item>
+    </style>
+
     <style name="NoteActionBarStyle" parent="@android:style/Widget.Holo.Light.ActionBar.Solid">
+        <!--        <item name="android:displayOptions" />-->
         <item name="android:visibility">visible</item>
     </style>
 </resources>
\ No newline at end of file
diff --git a/小米便签-维护与开发/src/net/micode/notes/ui/NoteEditActivity.java b/小米便签-维护与开发/src/net/micode/notes/ui/NoteEditActivity.java
index 96a9ff8..99d1ecf 100644
--- a/小米便签-维护与开发/src/net/micode/notes/ui/NoteEditActivity.java
+++ b/小米便签-维护与开发/src/net/micode/notes/ui/NoteEditActivity.java
@@ -52,6 +52,8 @@ import android.widget.LinearLayout;
 import android.widget.TextView;
 import android.widget.Toast;
 
+import androidx.appcompat.app.AppCompatActivity;
+
 import net.micode.notes.R;
 import net.micode.notes.data.Notes;
 import net.micode.notes.data.Notes.TextNote;
@@ -72,7 +74,7 @@ import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
 
-public class NoteEditActivity extends Activity implements OnClickListener,
+public class NoteEditActivity extends AppCompatActivity implements OnClickListener,
         NoteSettingChangedListener, OnTextViewChangeListener {
     private class HeadViewHolder {
         public TextView tvModified;
diff --git a/小米便签-维护与开发/src/net/micode/notes/ui/NotesListActivity.java b/小米便签-维护与开发/src/net/micode/notes/ui/NotesListActivity.java
index e843aec..77a30b8 100644
--- a/小米便签-维护与开发/src/net/micode/notes/ui/NotesListActivity.java
+++ b/小米便签-维护与开发/src/net/micode/notes/ui/NotesListActivity.java
@@ -60,6 +60,8 @@ import android.widget.PopupMenu;
 import android.widget.TextView;
 import android.widget.Toast;
 
+import androidx.appcompat.app.AppCompatActivity;
+
 import net.micode.notes.R;
 import net.micode.notes.data.Notes;
 import net.micode.notes.data.Notes.NoteColumns;
@@ -78,7 +80,7 @@ import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.util.HashSet;
 
-public class NotesListActivity extends Activity implements OnClickListener, OnItemLongClickListener {
+public class NotesListActivity extends AppCompatActivity implements OnClickListener, OnItemLongClickListener {
     private static final int FOLDER_NOTE_LIST_QUERY_TOKEN = 0;
 
     private static final int FOLDER_LIST_QUERY_TOKEN      = 1;