diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 698a41b..f364df4 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -10,7 +10,8 @@
     <uses-permission android:name="android.permission.INSTALL_PACKAGES" />
     <uses-permission android:name="android.permission.DELETE_PACKAGES" />
     <uses-permission android:name="android.permission.MASTER_CLEAR" />
-    <uses-permission android:name="android.permission.CHANGE_COMPONENT_ENABLED_STATE" /> <!-- 系统权限，有系统签名可以使用 -->
+    <uses-permission android:name="android.permission.CHANGE_COMPONENT_ENABLED_STATE" />
+    <!-- 系统权限，有系统签名可以使用 -->
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.READ_PHONE_STATE" />
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
@@ -27,13 +28,14 @@
         android:name=".MyApplication"
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
+        android:roundIcon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:launchMode="singleTask"
-        android:roundIcon="@mipmap/ic_launcher_round"
+        android:networkSecurityConfig="@xml/network"
         android:supportsRtl="true"
         android:theme="@style/AppTheme"
         tools:ignore="GoogleAppIndexingWarning">
-        <activity android:name=".activity.CopyrightActivity"></activity>
+        <activity android:name=".activity.CopyrightActivity" />
         <activity android:name=".activity.AboutActivity" />
         <activity android:name=".activity.SearcherActivity" />
 
diff --git a/app/src/main/res/drawable-v24/ic_launcher_foreground.xml b/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
deleted file mode 100644
index 1f6bb29..0000000
--- a/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
+++ /dev/null
@@ -1,34 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:aapt="http://schemas.android.com/aapt"
-    android:width="108dp"
-    android:height="108dp"
-    android:viewportWidth="108"
-    android:viewportHeight="108">
-    <path
-        android:fillType="evenOdd"
-        android:pathData="M32,64C32,64 38.39,52.99 44.13,50.95C51.37,48.37 70.14,49.57 70.14,49.57L108.26,87.69L108,109.01L75.97,107.97L32,64Z"
-        android:strokeWidth="1"
-        android:strokeColor="#00000000">
-        <aapt:attr name="android:fillColor">
-            <gradient
-                android:endX="78.5885"
-                android:endY="90.9159"
-                android:startX="48.7653"
-                android:startY="61.0927"
-                android:type="linear">
-                <item
-                    android:color="#44000000"
-                    android:offset="0.0" />
-                <item
-                    android:color="#00000000"
-                    android:offset="1.0" />
-            </gradient>
-        </aapt:attr>
-    </path>
-    <path
-        android:fillColor="#FFFFFF"
-        android:fillType="nonZero"
-        android:pathData="M66.94,46.02L66.94,46.02C72.44,50.07 76,56.61 76,64L32,64C32,56.61 35.56,50.11 40.98,46.06L36.18,41.19C35.45,40.45 35.45,39.3 36.18,38.56C36.91,37.81 38.05,37.81 38.78,38.56L44.25,44.05C47.18,42.57 50.48,41.71 54,41.71C57.48,41.71 60.78,42.57 63.68,44.05L69.11,38.56C69.84,37.81 70.98,37.81 71.71,38.56C72.44,39.3 72.44,40.45 71.71,41.19L66.94,46.02ZM62.94,56.92C64.08,56.92 65,56.01 65,54.88C65,53.76 64.08,52.85 62.94,52.85C61.8,52.85 60.88,53.76 60.88,54.88C60.88,56.01 61.8,56.92 62.94,56.92ZM45.06,56.92C46.2,56.92 47.13,56.01 47.13,54.88C47.13,53.76 46.2,52.85 45.06,52.85C43.92,52.85 43,53.76 43,54.88C43,56.01 43.92,56.92 45.06,56.92Z"
-        android:strokeWidth="1"
-        android:strokeColor="#00000000" />
-</vector>
diff --git a/app/src/main/res/mipmap-anydpi-v26/ic_launcher.png b/app/src/main/res/mipmap-anydpi-v26/ic_launcher.png
deleted file mode 100644
index b296b31..0000000
Binary files a/app/src/main/res/mipmap-anydpi-v26/ic_launcher.png and /dev/null differ
diff --git a/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.png b/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.png
deleted file mode 100644
index 7cc1c63..0000000
Binary files a/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.png and /dev/null differ
diff --git a/app/src/main/res/mipmap-hdpi/ic_launcher_round.png b/app/src/main/res/mipmap-hdpi/ic_launcher_round.png
deleted file mode 100644
index 7cc1c63..0000000
Binary files a/app/src/main/res/mipmap-hdpi/ic_launcher_round.png and /dev/null differ
diff --git a/app/src/main/res/mipmap-mdpi/ic_launcher_round.png b/app/src/main/res/mipmap-mdpi/ic_launcher_round.png
deleted file mode 100644
index 7cc1c63..0000000
Binary files a/app/src/main/res/mipmap-mdpi/ic_launcher_round.png and /dev/null differ
diff --git a/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png b/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png
deleted file mode 100644
index 7cc1c63..0000000
Binary files a/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png and /dev/null differ
diff --git a/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png b/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png
deleted file mode 100644
index 7cc1c63..0000000
Binary files a/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png and /dev/null differ
diff --git a/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png b/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png
deleted file mode 100644
index 7cc1c63..0000000
Binary files a/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png and /dev/null differ
diff --git a/app/src/main/res/xml/network.xml b/app/src/main/res/xml/network.xml
new file mode 100644
index 0000000..dca93c0
--- /dev/null
+++ b/app/src/main/res/xml/network.xml
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<network-security-config>
+    <base-config cleartextTrafficPermitted="true" />
+</network-security-config>
\ No newline at end of file