diff --git a/TMessagesProj/src/main/java/org/telegram/ui/LaunchActivity.java b/TMessagesProj/src/main/java/org/telegram/ui/LaunchActivity.java
index 4bef39e..f67fa10 100644
--- a/TMessagesProj/src/main/java/org/telegram/ui/LaunchActivity.java
+++ b/TMessagesProj/src/main/java/org/telegram/ui/LaunchActivity.java
@@ -144,6 +144,7 @@
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
+
         ApplicationLoader.postInitApplication();
         NativeCrashManager.handleDumpFiles(this);
         AndroidUtilities.checkDisplaySize(this, getResources().getConfiguration());
@@ -176,7 +177,15 @@
         }
 
         requestWindowFeature(Window.FEATURE_NO_TITLE);
-        setTheme(R.style.Theme_TMessages);
+//        setTheme(R.style.Theme_TMessages);
+        SharedPreferences preferences2 = ApplicationLoader.applicationContext.getSharedPreferences("night_file", Activity.MODE_PRIVATE);
+        if (preferences2.getBoolean("night",false)) {
+//            Log.e("siyehua", "night");
+        setTheme(R.style.Theme_TMessages2);
+        } else {
+//            Log.e("siyehua", "day");
+            setTheme(R.style.Theme_TMessages);
+        }
         getWindow().setBackgroundDrawableResource(R.drawable.transparent);
         if (UserConfig.passcodeHash.length() > 0 && !UserConfig.allowScreenCapture) {
             try {
@@ -3012,4 +3021,12 @@
 
     }
 
+    @Override
+    public void recreate() {
+        mainFragmentsStack.clear();
+        meFragment= null;
+        chatFragment = null;
+        contactsFragment = null;
+        super.recreate();
+    }
 }