diff --git a/app/build.gradle b/app/build.gradle
index c1a6876899..3b60c1a3ed 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -14,12 +14,30 @@ android {
         versionName appVerName
     }
 
+    if (project.hasProperty('releaseStoreFile')) {
+        signingConfigs {
+            config {
+                storeFile = file(project.properties['releaseStoreFile'])
+                storePassword = project.properties['releaseStorePassword']
+                keyAlias = project.properties['releaseKeyAlias']
+                keyPassword = project.properties['releaseKeyPassword']
+            }
+        }
+    }
+
     buildTypes {
+        all {
+            if (project.hasProperty('releaseStoreFile')) {
+                signingConfig signingConfigs.config
+            } else {
+                println("using debug sign")
+                signingConfig signingConfigs.debug
+            }
+        }
         release {
             minifyEnabled true
             shrinkResources true
             proguardFiles 'proguard-rules.pro'
-            signingConfig signingConfigs.debug
         }
     }
 
diff --git a/app/src/main/java/me/iacn/biliroaming/SettingDialog.kt b/app/src/main/java/me/iacn/biliroaming/SettingDialog.kt
index b9d9c104d8..5ac82cc9ed 100644
--- a/app/src/main/java/me/iacn/biliroaming/SettingDialog.kt
+++ b/app/src/main/java/me/iacn/biliroaming/SettingDialog.kt
@@ -115,7 +115,6 @@ class SettingDialog(context: Context) : AlertDialog.Builder(context) {
             var supportAdd4K = false
             var supportMusicNotificationHook = true
             var supportDark = true
-            var supportAddChannel = false
             var supportCustomizeTab = true
             val supportFullSplash = try {
                 instance.splashInfoClass?.getMethod("getMode") != null
diff --git a/app/src/main/res/drawable/ic_launcher_background.xml b/app/src/main/res/drawable/ic_launcher_background.xml
deleted file mode 100644
index c768c97974..0000000000
--- a/app/src/main/res/drawable/ic_launcher_background.xml
+++ /dev/null
@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="108dp"
-    android:height="108dp"
-    android:viewportWidth="108"
-    android:viewportHeight="108">
-  <group android:scaleX="0"
-      android:scaleY="0"
-      android:translateX="54"
-      android:translateY="54">
-  </group>
-</vector>
\ No newline at end of file