Fix app theme (#2461)

app/src/main/java/org/lsposed/manager/ui/activity/base/BaseActivity.java

@@ -52,8 +52,8 @@ public class BaseActivity extends MaterialActivity {
 
     @Override
     public void onCreate(@Nullable Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
         setTheme(R.style.AppTheme);
+        super.onCreate(savedInstanceState);
         // make sure the versions are consistent
         if (BuildConfig.DEBUG) return;
         if (!ConfigManager.isBinderAlive()) return;