diff --git a/app/src/main/java/io/legado/app/App.kt b/app/src/main/java/io/legado/app/App.kt
index 85bca3c93..90f01213b 100644
--- a/app/src/main/java/io/legado/app/App.kt
+++ b/app/src/main/java/io/legado/app/App.kt
@@ -1,12 +1,19 @@
 package io.legado.app
 
 import android.app.Application
+import android.content.SharedPreferences
 
 class App : Application() {
 
-    
+    companion object{
+        lateinit var instance:App
+        lateinit var configPreferences:SharedPreferences
+    }
 
     override fun onCreate() {
         super.onCreate()
+        instance = this
+        configPreferences = getSharedPreferences("CONFIG", 0)
+
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/constant/AppConst.kt b/app/src/main/java/io/legado/app/constant/AppConst.kt
new file mode 100644
index 000000000..6f9e7b6b9
--- /dev/null
+++ b/app/src/main/java/io/legado/app/constant/AppConst.kt
@@ -0,0 +1,7 @@
+package io.legado.app.constant
+
+object AppConst {
+    const val channelIdDownload = "channel_download"
+    const val channelIdReadAloud = "channel_read_aloud"
+    const val channelIdWeb = "channel_web"
+}
\ No newline at end of file