Fix theme changing glitch

app/src/main/java/com/topjohnwu/magisk/MagiskFragment.java

@@ -47,7 +47,8 @@ import butterknife.ButterKnife;
 import butterknife.OnClick;
 import butterknife.Unbinder;
 
-public class MagiskFragment extends Fragment implements CallbackEvent.Listener<Void> {
+public class MagiskFragment extends Fragment
+        implements CallbackEvent.Listener<Void>, SwipeRefreshLayout.OnRefreshListener {
 
     private static boolean noDialog = false;
     private static int expandHeight = 0;
@@ -226,7 +227,26 @@ public class MagiskFragment extends Fragment implements CallbackEvent.Listener<V
 
                 });
 
-        mSwipeRefreshLayout.setOnRefreshListener(() -> {
+        mSwipeRefreshLayout.setOnRefreshListener(this);
+
+        if (magiskManager.magiskVersionCode < 0 && Shell.rootAccess() && !noDialog) {
+            noDialog = true;
+            new AlertDialogBuilder(getActivity())
+                    .setTitle(R.string.no_magisk_title)
+                    .setMessage(R.string.no_magisk_msg)
+                    .setCancelable(true)
+                    .setPositiveButton(R.string.goto_install, (d, i) -> {})
+                    .setNegativeButton(R.string.no_thanks, null)
+                    .show();
+        }
+
+        updateUI();
+
+        return v;
+    }
+
+    @Override
+    public void onRefresh() {
         updateUI();
 
         magiskUpdateText.setText(R.string.checking_for_updates);
@@ -248,22 +268,6 @@ public class MagiskFragment extends Fragment implements CallbackEvent.Listener<V
         } else {
             mSwipeRefreshLayout.setRefreshing(false);
         }
-        });
-
-        if (magiskManager.magiskVersionCode < 0 && Shell.rootAccess() && !noDialog) {
-            noDialog = true;
-            new AlertDialogBuilder(getActivity())
-                    .setTitle(R.string.no_magisk_title)
-                    .setMessage(R.string.no_magisk_msg)
-                    .setCancelable(true)
-                    .setPositiveButton(R.string.goto_install, (d, i) -> {})
-                    .setNegativeButton(R.string.no_thanks, null)
-                    .show();
-        }
-
-        updateUI();
-
-        return v;
     }
 
     @Override

app/src/main/java/com/topjohnwu/magisk/MainActivity.java

@@ -91,18 +91,6 @@ public class MainActivity extends Activity
         checkHideSection();
     }
 
-    @Override
-    protected void onRestoreInstanceState(Bundle savedInstanceState) {
-        super.onRestoreInstanceState(savedInstanceState);
-        navigate(savedInstanceState.getInt(MagiskManager.INTENT_SECTION, R.id.magisk));
-    }
-
-    @Override
-    protected void onSaveInstanceState(Bundle outState) {
-        super.onSaveInstanceState(outState);
-        outState.putInt(MagiskManager.INTENT_SECTION, mDrawerItem);
-    }
-
     @Override
     protected void onDestroy() {
         getApplicationContext().reloadMainActivity.unRegister(this);