Disable header gesture detector on swiping

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

@@ -389,6 +389,8 @@ public class FragmentMessages extends FragmentBase
     private boolean scrolling = false;
     private boolean navigating = false;
 
+    private GestureDetector gestureDetector;
+
     private AdapterMessage adapter;
 
     private AdapterMessage.ViewType viewType;
@@ -1196,70 +1198,72 @@ public class FragmentMessages extends FragmentBase
         };
         rvMessage.addItemDecoration(dateDecorator);
 
-        rvMessage.addOnItemTouchListener(new RecyclerView.OnItemTouchListener() {
-            private final GestureDetector gestureDetector =
-                    new GestureDetector(getContext(), new GestureDetector.SimpleOnGestureListener() {
-                        @Override
-                        public void onLongPress(@NonNull MotionEvent e) {
-                            if (!getLifecycle().getCurrentState().isAtLeast(Lifecycle.State.STARTED))
-                                return;
-                            if (swiping)
-                                return;
+        gestureDetector = new GestureDetector(getContext(), new GestureDetector.SimpleOnGestureListener() {
+            @Override
+            public void onLongPress(@NonNull MotionEvent e) {
+                if (!getLifecycle().getCurrentState().isAtLeast(Lifecycle.State.STARTED))
+                    return;
 
-                            int x = Math.round(e.getX());
-                            int y = Math.round(e.getY());
+                int x = Math.round(e.getX());
+                int y = Math.round(e.getY());
 
-                            Rect rect = new Rect();
-                            for (int i = 0; i < rvMessage.getChildCount(); i++) {
-                                View child = rvMessage.getChildAt(i);
-                                if (child == null)
-                                    continue;
+                Rect rect = new Rect();
+                for (int i = 0; i < rvMessage.getChildCount(); i++) {
+                    View child = rvMessage.getChildAt(i);
+                    if (child == null)
+                        continue;
 
-                                dateDecorator.getItemOffsets(rect, child, rvMessage, null);
-                                if (rect.height() == 0)
-                                    continue;
+                    dateDecorator.getItemOffsets(rect, child, rvMessage, null);
+                    if (rect.height() == 0)
+                        continue;
 
-                                rect.set(child.getLeft(), child.getTop() - rect.top, child.getRight(), child.getTop());
-                                if (!rect.contains(x, y))
-                                    continue;
+                    rect.set(child.getLeft(), child.getTop() - rect.top, child.getRight(), child.getTop());
+                    if (!rect.contains(x, y))
+                        continue;
 
-                                int pos = rvMessage.getChildAdapterPosition(child);
-                                if (pos == NO_POSITION)
-                                    continue;
+                    int pos = rvMessage.getChildAdapterPosition(child);
+                    if (pos == NO_POSITION)
+                        continue;
 
-                                TupleMessageEx message = adapter.getItemAtPosition(pos);
-                                if (message == null)
-                                    continue;
+                    TupleMessageEx message = adapter.getItemAtPosition(pos);
+                    if (message == null)
+                        continue;
 
-                                Calendar cal = Calendar.getInstance();
-                                cal.setTimeInMillis(message.received);
-                                cal.set(Calendar.HOUR_OF_DAY, 0);
-                                cal.set(Calendar.MINUTE, 0);
-                                cal.set(Calendar.SECOND, 0);
-                                cal.set(Calendar.MILLISECOND, 0);
-
-                                if (date_week) {
-                                    cal.setMinimalDaysInFirstWeek(4); // ISO 8601
-                                    cal.setFirstDayOfWeek(Calendar.MONDAY);
-                                    cal.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
-                                    cal.add(Calendar.DATE, 7);
-                                } else
-                                    cal.add(Calendar.DATE, 1);
-                                long to = cal.getTimeInMillis();
+                    Calendar cal = Calendar.getInstance();
+                    cal.setTimeInMillis(message.received);
+                    cal.set(Calendar.HOUR_OF_DAY, 0);
+                    cal.set(Calendar.MINUTE, 0);
+                    cal.set(Calendar.SECOND, 0);
+                    cal.set(Calendar.MILLISECOND, 0);
+
+                    if (date_week) {
+                        cal.setMinimalDaysInFirstWeek(4); // ISO 8601
+                        cal.setFirstDayOfWeek(Calendar.MONDAY);
+                        cal.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
+                        cal.add(Calendar.DATE, 7);
+                    } else
+                        cal.add(Calendar.DATE, 1);
+                    long to = cal.getTimeInMillis();
 
-                                cal.add(Calendar.DATE, date_week ? -7 : -1);
-                                long from = cal.getTimeInMillis();
+                    cal.add(Calendar.DATE, date_week ? -7 : -1);
+                    long from = cal.getTimeInMillis();
 
-                                onMenuSelect(from, to, true);
-                                Helper.performHapticFeedback(view, HapticFeedbackConstants.CONFIRM);
-                                return;
-                            }
-                        }
-                    });
+                    onMenuSelect(from, to, true);
+                    Helper.performHapticFeedback(view, HapticFeedbackConstants.CONFIRM);
+                    return;
+                }
+            }
+        });
 
+        rvMessage.addOnItemTouchListener(new RecyclerView.OnItemTouchListener() {
             @Override
             public boolean onInterceptTouchEvent(@NonNull RecyclerView rv, @NonNull MotionEvent e) {
-                gestureDetector.onTouchEvent(e);
+                if (!swiping)
+                    try {
+                        gestureDetector.onTouchEvent(e);
+                    } catch (Throwable ex) {
+                        Log.e(ex);
+                    }
                 return false;
             }
 
@@ -3290,9 +3294,18 @@ public class FragmentMessages extends FragmentBase
         public void onSelectedChanged(@Nullable RecyclerView.ViewHolder viewHolder, int actionState) {
             super.onSelectedChanged(viewHolder, actionState);
             getMainHandler().removeCallbacks(disableSwiping);
+
             if (actionState == ItemTouchHelper.ACTION_STATE_SWIPE) {
                 swiping = true;
                 Log.i("Swiping started");
+                try {
+                    MotionEvent cancel = MotionEvent.obtain(
+                            SystemClock.uptimeMillis(), SystemClock.uptimeMillis(),
+                            MotionEvent.ACTION_CANCEL, 0, 0, 0);
+                    gestureDetector.onTouchEvent(cancel);
+                } catch (Throwable ex) {
+                    Log.e(ex);
+                }
             } else
                 getMainHandler().postDelayed(disableSwiping, ViewConfiguration.getLongPressTimeout() + 100);
         }