Refactor kivy screens[Method for set the dynamic screens]

src/bitmessagekivy/kv/common_widgets.kv

@@ -40,7 +40,7 @@
         opposite_colors: True
         elevation_normal: 8
         md_bg_color: [0.941, 0, 0,1]
-        on_press: app.root.ids.scr_mngr.current = 'create'
+        on_press: app.set_screen('create')
         on_press: app.clear_composer()
 
 

src/bitmessagekivy/kv/credits.kv

@@ -25,4 +25,4 @@
                 MDRaisedButton:
                     height: dp(38)
                     text: app.tr._("+Add more credits")
-                    on_press: app.root.ids.scr_mngr.current = 'payment'
+                    on_press: app.set_screen('payment')

src/bitmessagekivy/kv/login.kv

@@ -80,7 +80,7 @@
                                 icon: "chevron-double-right"
                                 text: app.tr._("Proceed Next")
                                 on_release:
-                                    app.root.ids.scr_mngr.current = 'random'
+                                    app.set_screen('random')
                                 on_press:
                                     app.root.ids.sc7.reset_address_label()
 

src/bitmessagekivy/kv/msg_composer.kv

@@ -76,7 +76,7 @@
                     icon: 'qrcode-scan'
                     pos_hint: {'center_x': 0.95, 'y': 0.6}
                     on_release:
-                        if root.is_camara_attached(): app.root.ids.scr_mngr.current = 'scanscreen'
+                        if root.is_camara_attached(): app.set_screen('scanscreen')
                         else: root.camera_alert()
                     on_press:
                         app.root.ids.sc23.get_screen('composer')

src/bitmessagekivy/kv/popup.kv

@@ -153,7 +153,7 @@
         MDRaisedButton:
             size_hint: 1.5, None
             height: dp(40)
-            on_press: app.root.ids.scr_mngr.current = 'showqrcode'
+            on_press: app.set_screen('showqrcode')
             on_press: app.root.ids.sc15.qrdisplay(root, root.address)
             MDLabel:
                 font_style: 'H6'