Clear delayed

app/src/main/java/eu/faircode/email/ActivityBase.java

@@ -766,19 +766,24 @@ abstract class ActivityBase extends AppCompatActivity implements SharedPreferenc
         @Override
         public void onFragmentDestroyed(@NonNull FragmentManager fm, @NonNull Fragment f) {
             log(fm, f, "onFragmentDestroyed");
-            try {
-                for (Field field : f.getClass().getDeclaredFields()) {
-                    Class<?> type = field.getType();
-                    if (View.class.isAssignableFrom(type) ||
-                            RecyclerView.Adapter.class.isAssignableFrom(type)) {
-                        Log.i("Clearing " + f.getClass().getSimpleName() + ":" + field.getName());
-                        field.setAccessible(true);
-                        field.set(f, null);
+            getMainHandler().post(new Runnable() {
+                @Override
+                public void run() {
+                    try {
+                        for (Field field : f.getClass().getDeclaredFields()) {
+                            Class<?> type = field.getType();
+                            if (View.class.isAssignableFrom(type) ||
+                                    RecyclerView.Adapter.class.isAssignableFrom(type)) {
+                                Log.i("Clearing " + f.getClass().getSimpleName() + ":" + field.getName());
+                                field.setAccessible(true);
+                                field.set(f, null);
+                            }
+                        }
+                    } catch (Throwable ex) {
+                        Log.w(ex);
                     }
                 }
-            } catch (Throwable ex) {
-                Log.w(ex);
-            }
+            });
         }
 
         @Override