worked on designing app closing popup

src/bitmessagekivy/kv/popup.kv

@@ -251,3 +251,64 @@
                     font_size: '13sp'
                     color: (1,1,1,1)
                     halign: 'center'
+
+<AppClosingPopup>:
+    id: closing_popup
+    size_hint : (None,None)
+    height: 1.3*(popup_label.height+ my_add_btn.children[0].height)
+    width :app.window_size[0] - (app.window_size[0]/10 if app.app_platform == 'android' else app.window_size[0]/4)
+    background: './images/popup.jpeg'
+    auto_dismiss: False
+    separator_height: 0
+    BoxLayout:
+        id: myadd_popup_box
+        size_hint_y: None
+        spacing:dp(70)
+        orientation: 'vertical'
+        BoxLayout:
+            size_hint_y: None
+            orientation: 'vertical'
+            spacing:dp(25)
+            MDLabel:
+                id: popup_label
+                font_style: 'Subtitle2'
+                theme_text_color: 'Primary'
+                text: "Bitmessage isn't connected to the network.\n If you quit now, it may cause delivery delays.\n Wait until connected and the synchronisation finishes?"
+                font_size: '17sp'
+                halign: 'left'
+        BoxLayout:
+            id: my_add_btn
+            spacing:5
+            orientation: 'horizontal'
+            MDRaisedButton:
+                size_hint: 1.5, None
+                height: dp(40)
+                on_press: root.closingAction(self.children[0].text)
+                on_press: app.stop()
+                MDLabel:
+                    font_style: 'H6'
+                    text: 'Yes'
+                    font_size: '13sp'
+                    color: (1,1,1,1)
+                    halign: 'center'
+            MDRaisedButton:
+                size_hint: 1.5, None
+                height: dp(40)
+                on_press: root.closingAction(self.children[0].text)
+                MDLabel:
+                    font_style: 'H6'
+                    text: 'No'
+                    font_size: '13sp'
+                    color: (1,1,1,1)
+                    halign: 'center'
+            MDRaisedButton:
+                size_hint: 1.5, None
+                height: dp(40)
+                #on_press: root.dismiss()
+                on_press: root.closingAction(self.children[0].text)
+                MDLabel:
+                    font_style: 'H6'
+                    text: 'Cancel'
+                    font_size: '13sp'
+                    color: (1,1,1,1)
+                    halign: 'center'

src/bitmessagekivy/mpybit.py

@@ -1313,7 +1313,7 @@ class NavigateApp(MDApp):
         kivysignalthread = UIkivySignaler()
         kivysignalthread.daemon = True
         kivysignalthread.start()
-        Window.bind(on_keyboard=self.on_key, on_request_close=self.on_request_closee)
+        Window.bind(on_keyboard=self.on_key, on_request_close=self.on_request_close)
         return Builder.load_file(
             os.path.join(os.path.dirname(__file__), 'main.kv'))
 
@@ -1622,12 +1622,12 @@ class NavigateApp(MDApp):
     def on_start(self):
         self.set_message_count()
 
-    @staticmethod
-    def on_stop():
-        """On stop methos is used for stoping the runing script"""
-        print("*******************EXITING FROM APPLICATION*******************")
-        import shutdown
-        shutdown.doCleanShutdown()
+    # @staticmethod
+    # def on_stop():
+    #     """On stop methos is used for stoping the runing script"""
+    #     print("*******************EXITING FROM APPLICATION*******************")
+    #     import shutdown
+    #     shutdown.doCleanShutdown()
 
     @staticmethod
     def current_address_label(current_add_label=None, current_addr=None):
@@ -1763,21 +1763,9 @@ class NavigateApp(MDApp):
             except Exception:
                 self.root.ids.sc17.children[0].children[1].active = False
 
-    def on_request_closee(self, *args):
-        box = BoxLayout(orientation='vertical')
-        box.add_widget(Label(
-            text=(
-                "Bitmessage isn't connected to the network.\n"
-                "If you quit now, it may cause delivery delays.\n"
-                "Wait until connected and the synchronisation finishes?")))
-        mybutton = Button(text='Yes', size_hint=(1, 0.50))
-        box.add_widget(mybutton)
-        mybutton2 = Button(text='No', size_hint=(1, 0.50))
-        box.add_widget(mybutton2)
-        mybutton3 = Button(text='Cancel', size_hint=(1, 0.50))
-        box.add_widget(mybutton3)
-        popup = Popup(title="Window close", content=box, size_hint=(None, None), size=(500, 300))
-        popup.open()
+    def on_request_close(self, *args):
+        """This method is for app closing request"""
+        AppClosingPopup().open()
         return True
         
 
@@ -2648,3 +2636,19 @@ class NavigationDrawerSubheader(OneLineListItem):
     disabled = True
     divider = None
     theme_text_color = 'Secondary'
+
+
+class AppClosingPopup(Popup):
+    """Class for app closing popup"""
+
+    def __init__(self, **kwargs):
+        super(AppClosingPopup, self).__init__(**kwargs)
+
+    def closingAction(self, text):
+        if text == 'Yes':
+            print("*******************EXITING FROM APPLICATION*******************")
+            import shutdown
+            shutdown.doCleanShutdown()
+        else:
+            self.dismiss()
+            toast(text)