Delegate fragment back to activity

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

@@ -770,6 +770,11 @@ abstract class ActivityBase extends AppCompatActivity implements SharedPreferenc
         finish();
     }
 
+
+    public void onBackPressedFragment() {
+        performBack();
+    }
+
     @Override
     public boolean shouldUpRecreateTask(Intent targetIntent) {
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {

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

@@ -695,16 +695,7 @@ public class ActivityView extends ActivityBilling implements FragmentManager.OnB
         });
 
         getSupportFragmentManager().addOnBackStackChangedListener(this);
-
-        getOnBackPressedDispatcher().addCallback(this, new OnBackPressedCallback(true) {
-            @Override
-            public void handleOnBackPressed() {
-                if (Helper.isKeyboardVisible(view))
-                    Helper.hideKeyboard(view);
-                else
-                    onExit();
-            }
-        });
+        getOnBackPressedDispatcher().addCallback(this, backPressedCallback);
 
         // Initialize
 
@@ -727,6 +718,21 @@ public class ActivityView extends ActivityBilling implements FragmentManager.OnB
         Shortcuts.update(this, this);
     }
 
+    @Override
+    public void onBackPressedFragment() {
+        backPressedCallback.handleOnBackPressed();
+    }
+
+    private OnBackPressedCallback backPressedCallback = new OnBackPressedCallback(true) {
+        @Override
+        public void handleOnBackPressed() {
+            if (Helper.isKeyboardVisible(view))
+                Helper.hideKeyboard(view);
+            else
+                onExit();
+        }
+    };
+
     private void init() {
         Bundle args = new Bundle();
 

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

@@ -7414,7 +7414,12 @@ public class FragmentMessages extends FragmentBase implements SharedPreferences.
             }
 
             handleExit();
-            finish();
+
+            FragmentActivity activity = getActivity();
+            if (activity instanceof ActivityBase)
+                ((ActivityBase) activity).onBackPressedFragment();
+            else
+                finish();
         }
     };