Fix #1611

kivymd/uix/dialog/dialog.py

@@ -428,6 +428,7 @@ def on_start(self):
     NumericProperty,
     ColorProperty,
     ObjectProperty,
+    BooleanProperty,
 )
 from kivy.uix.boxlayout import BoxLayout
 from kivy.uix.widget import Widget
@@ -490,6 +491,15 @@ class MDDialog(MDCard, MotionDialogBehavior):
     and defaults to `[0, 0, 0, 0.5]`.
     """
 
+    auto_dismiss = BooleanProperty(True)
+    """
+    This property determines if the dialog is automatically
+    dismissed when the user clicks outside it.
+
+    :attr:`auto_dismiss` is a :class:`~kivy.properties.BooleanProperty` and
+    defaults to True.
+    """
+
     _scrim = ObjectProperty()  # kivymd.uix.dialog.dialog.MDDialogScrim object
     _is_open = False  # is the dialog currently open or closed.
 
@@ -555,7 +565,7 @@ def on_pre_dismiss(self, *args) -> None:
         """Fired when a dialog pre-dismiss."""
 
     def on_touch_down(self, touch):
-        if not self.collide_point(*touch.pos):
+        if not self.collide_point(*touch.pos) and self.auto_dismiss:
             self.dismiss()
             return True
         super().on_touch_down(touch)