diff --git a/.idea/encodings.xml b/.idea/encodings.xml
index 582a05f..d11d9c1 100644
--- a/.idea/encodings.xml
+++ b/.idea/encodings.xml
@@ -2,5 +2,6 @@
 <project version="4">
   <component name="Encoding">
     <file url="file://$PROJECT_DIR$/app/src/main/java/net/micode/notes/gtask/remote/GTaskClient.java" charset="UTF-8" />
+    <file url="file://$PROJECT_DIR$/app/src/main/java/net/micode/notes/ui/NotesListActivity.java" charset="UTF-8" />
   </component>
 </project>
\ No newline at end of file
diff --git a/app/build.gradle b/app/build.gradle
index 9e8b972..31cc42b 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -9,7 +9,7 @@ android {
     defaultConfig {
         applicationId "net.micode.notes"
         minSdkVersion 14
-        targetSdkVersion 14
+
     }
 
     buildTypes {
@@ -19,3 +19,7 @@ android {
         }
     }
 }
+dependencies {
+    implementation 'com.android.support:appcompat-v7:28.0.0'
+
+}
\ No newline at end of file
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index e5c7d47..ad54787 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -16,6 +16,7 @@
 -->
 
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
     package="net.micode.notes"
     android:versionCode="1"
     android:versionName="0.1" >
@@ -40,7 +41,8 @@
             android:configChanges="keyboardHidden|orientation|screenSize"
             android:label="@string/app_name"
             android:launchMode="singleTop"
-            android:theme="@style/NoteTheme"
+            android:theme="@style/Theme.AppCompat.Light.DarkActionBar"
+
             android:uiOptions="splitActionBarWhenNarrow"
             android:windowSoftInputMode="adjustPan" >
 
@@ -54,9 +56,13 @@
             android:name=".ui.NoteEditActivity"
             android:configChanges="keyboardHidden|orientation|screenSize"
             android:launchMode="singleTop"
-            android:theme="@style/NoteTheme" >
+            android:theme="@style/Theme.AppCompat.Light.DarkActionBar"
+            >
 
-            <intent-filter>
+
+<!--            新维护-->
+
+            <intent-filter tools:ignore="AppLinkUrlError">
                 <action android:name="android.intent.action.VIEW" />
                 <category android:name="android.intent.category.DEFAULT" />
                 <data android:mimeType="vnd.android.cursor.item/text_note" />
diff --git a/app/src/main/java/net/micode/notes/data/Contact.java b/app/src/main/java/net/micode/notes/data/Contact.java
index d97ac5d..e1bb8f3 100644
--- a/app/src/main/java/net/micode/notes/data/Contact.java
+++ b/app/src/main/java/net/micode/notes/data/Contact.java
@@ -35,7 +35,12 @@ public class Contact {
             + "(SELECT raw_contact_id "
             + " FROM phone_lookup"
             + " WHERE min_match = '+')";
-
+    /**
+     * 获取电话号码对应的联系人名字
+     * @param context 上下文
+     * @param phoneNumber 电话号码
+     * @return 联系人名字
+     */
     public static String getContact(Context context, String phoneNumber) {
         if(sContactCache == null) {
             sContactCache = new HashMap<String, String>();
diff --git a/app/src/main/java/net/micode/notes/ui/NotesListActivity.java b/app/src/main/java/net/micode/notes/ui/NotesListActivity.java
index e843aec..93bef89 100644
--- a/app/src/main/java/net/micode/notes/ui/NotesListActivity.java
+++ b/app/src/main/java/net/micode/notes/ui/NotesListActivity.java
@@ -31,6 +31,7 @@ import android.database.Cursor;
 import android.os.AsyncTask;
 import android.os.Bundle;
 import android.preference.PreferenceManager;
+import android.support.v7.app.AppCompatActivity;
 import android.text.Editable;
 import android.text.TextUtils;
 import android.text.TextWatcher;
@@ -78,7 +79,7 @@ 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;