Low fps while running kivymd

[quitegreensky]

Hi dear developer. My problem is about lag and slow UI in animations. i have installed the kitchen sink from google play and it worked smooth an perfect on my device. but i have low fps that causes lags in UI. even with exactly same codes in the demo app. i think there is something wrong with my spec file but i can't figure out. can you please help me whit this problem?

main.py (same as demo)

from kivy.app import App
from kivy.lang import Builder
from kivy.metrics import dp
from kivy.properties import ObjectProperty
from kivy.uix.image import Image

from kivymd.bottomsheet import MDListBottomSheet, MDGridBottomSheet
from kivymd.button import MDIconButton
from kivymd.date_picker import MDDatePicker
from kivymd.dialog import MDDialog
from kivymd.label import MDLabel
from kivymd.list import ILeftBody, ILeftBodyTouch, IRightBodyTouch, BaseListItem
from kivymd.material_resources import DEVICE_TYPE
from kivymd.navigationdrawer import MDNavigationDrawer, NavigationDrawerHeaderBase
from kivymd.selectioncontrols import MDCheckbox
from kivymd.snackbar import Snackbar
from kivymd.theming import ThemeManager
from kivymd.time_picker import MDTimePicker

main_widget_kv = '''
#:import Toolbar kivymd.toolbar.Toolbar
#:import ThemeManager kivymd.theming.ThemeManager
#:import MDNavigationDrawer kivymd.navigationdrawer.MDNavigationDrawer
#:import NavigationLayout kivymd.navigationdrawer.NavigationLayout
#:import NavigationDrawerDivider kivymd.navigationdrawer.NavigationDrawerDivider
#:import NavigationDrawerToolbar kivymd.navigationdrawer.NavigationDrawerToolbar
#:import NavigationDrawerSubheader kivymd.navigationdrawer.NavigationDrawerSubheader
#:import MDCheckbox kivymd.selectioncontrols.MDCheckbox
#:import MDSwitch kivymd.selectioncontrols.MDSwitch
#:import MDList kivymd.list.MDList
#:import OneLineListItem kivymd.list.OneLineListItem
#:import TwoLineListItem kivymd.list.TwoLineListItem
#:import ThreeLineListItem kivymd.list.ThreeLineListItem
#:import OneLineAvatarListItem kivymd.list.OneLineAvatarListItem
#:import OneLineIconListItem kivymd.list.OneLineIconListItem
#:import OneLineAvatarIconListItem kivymd.list.OneLineAvatarIconListItem
#:import MDTextField kivymd.textfields.MDTextField
#:import MDSpinner kivymd.spinner.MDSpinner
#:import MDCard kivymd.card.MDCard
#:import MDSeparator kivymd.card.MDSeparator
#:import MDDropdownMenu kivymd.menu.MDDropdownMenu
#:import get_color_from_hex kivy.utils.get_color_from_hex
#:import colors kivymd.color_definitions.colors
#:import SmartTile kivymd.grid.SmartTile
#:import MDSlider kivymd.slider.MDSlider
#:import MDTabbedPanel kivymd.tabs.MDTabbedPanel
#:import MDTab kivymd.tabs.MDTab
#:import MDProgressBar kivymd.progressbar.MDProgressBar
#:import MDAccordion kivymd.accordion.MDAccordion
#:import MDAccordionItem kivymd.accordion.MDAccordionItem
#:import MDAccordionSubItem kivymd.accordion.MDAccordionSubItem
#:import MDThemePicker kivymd.theme_picker.MDThemePicker
#:import MDBottomNavigation kivymd.tabs.MDBottomNavigation
#:import MDBottomNavigationItem kivymd.tabs.MDBottomNavigationItem

NavigationLayout:
    id: nav_layout
    MDNavigationDrawer:
        id: nav_drawer
        NavigationDrawerToolbar:
            title: "Navigation Drawer"
        NavigationDrawerIconButton:
            icon: 'checkbox-blank-circle'
            text: "Accordion"
            on_release: app.root.ids.scr_mngr.current = 'accordion'
        NavigationDrawerIconButton:
            icon: 'checkbox-blank-circle'
            text: "Bottom Navigation"
            on_release: app.root.ids.scr_mngr.current = 'bottom_navigation'
        NavigationDrawerIconButton:
            icon: 'checkbox-blank-circle'
            text: "Bottom Sheets"
            on_release: app.root.ids.scr_mngr.current = 'bottomsheet'
        NavigationDrawerIconButton:
            icon: 'checkbox-blank-circle'
            text: "Buttons"
            on_release: app.root.ids.scr_mngr.current = 'button'
        NavigationDrawerIconButton:
            icon: 'checkbox-blank-circle'
            text: "Cards"
            on_release: app.root.ids.scr_mngr.current = 'card'
        NavigationDrawerIconButton:
            icon: 'checkbox-blank-circle'
            text: "Dialogs"
            on_release: app.root.ids.scr_mngr.current = 'dialog'
        NavigationDrawerIconButton:
            icon: 'checkbox-blank-circle'
            text: "Grid lists"
            on_release: app.root.ids.scr_mngr.current = 'grid'
        NavigationDrawerIconButton:
            icon: 'checkbox-blank-circle'
            text: "Labels"
            on_release: app.root.ids.scr_mngr.current = 'labels'
        NavigationDrawerIconButton:
            icon: 'checkbox-blank-circle'
            text: "Lists"
            on_release: app.root.ids.scr_mngr.current = 'list'
        NavigationDrawerIconButton:
            icon: 'checkbox-blank-circle'
            text: "Menus"
            on_release: app.root.ids.scr_mngr.current = 'menu'
        NavigationDrawerIconButton:
            icon: 'checkbox-blank-circle'
            text: "Navigation Drawer Widgets"
            on_release: app.root.ids.scr_mngr.current = 'nav_drawer'
        NavigationDrawerIconButton:
            icon: 'checkbox-blank-circle'
            text: "Pickers"
            on_release: app.root.ids.scr_mngr.current = 'pickers'
        NavigationDrawerIconButton:
            icon: 'checkbox-blank-circle'
            text: "Progress & activity"
            on_release: app.root.ids.scr_mngr.current = 'progress'
        NavigationDrawerIconButton:
            icon: 'checkbox-blank-circle'
            text: "Progress bars"
            on_release: app.root.ids.scr_mngr.current = 'progressbars'
        NavigationDrawerIconButton:
            icon: 'checkbox-blank-circle'
            text: "Selection controls"
            on_release: app.root.ids.scr_mngr.current = 'selectioncontrols'
        NavigationDrawerIconButton:
            icon: 'checkbox-blank-circle'
            text: "Sliders"
            on_release: app.root.ids.scr_mngr.current = 'slider'
        NavigationDrawerIconButton:
            icon: 'checkbox-blank-circle'
            text: "Snackbars"
            on_release: app.root.ids.scr_mngr.current = 'snackbar'
        NavigationDrawerIconButton:
            icon: 'checkbox-blank-circle'
            text: "Tabs"
            on_release: app.root.ids.scr_mngr.current = 'tabs'
        NavigationDrawerIconButton:
            icon: 'checkbox-blank-circle'
            text: "Text fields"
            on_release: app.root.ids.scr_mngr.current = 'textfields'
        NavigationDrawerIconButton:
            icon: 'checkbox-blank-circle'
            text: "Themes"
            on_release: app.root.ids.scr_mngr.current = 'theming'
        NavigationDrawerIconButton:
            icon: 'checkbox-blank-circle'
            text: "Toolbars"
            on_release: app.root.ids.scr_mngr.current = 'toolbar'
    BoxLayout:
        orientation: 'vertical'
        Toolbar:
            id: toolbar
            title: 'KivyMD Kitchen Sink'
            md_bg_color: app.theme_cls.primary_color
            background_palette: 'Primary'
            background_hue: '500'
            left_action_items: [['menu', lambda x: app.root.toggle_nav_drawer()]]
            right_action_items: [['dots-vertical', lambda x: app.root.toggle_nav_drawer()]]
        ScreenManager:
            id: scr_mngr
            Screen:
                name: 'bottomsheet'
                MDRaisedButton:
                    text: "Open list bottom sheet"
                    opposite_colors: True
                    size_hint: None, None
                    size: 4 * dp(48), dp(48)
                    pos_hint: {'center_x': 0.5, 'center_y': 0.6}
                    on_release: app.show_example_bottom_sheet()
                MDRaisedButton:
                    text: "Open grid bottom sheet"
                    opposite_colors: True
                    size_hint: None, None
                    size: 4 * dp(48), dp(48)
                    pos_hint: {'center_x': 0.5, 'center_y': 0.3}
                    on_release: app.show_example_grid_bottom_sheet()
            Screen:
                name: 'button'
                BoxLayout:
                    size_hint: None, None
                    size: '88dp', '48dp'
                    padding: '12dp'
                    pos_hint: {'center_x': 0.75, 'center_y': 0.8}
                    MDLabel:
                        font_style: 'Body1'
                        theme_text_color: 'Primary'
                        text: "Disable buttons"
                        size_hint_x:None
                        width: '56dp'
                    MDCheckbox:
                        id: disable_the_buttons
                MDIconButton:
                    icon: 'sd'
                    pos_hint: {'center_x': 0.25, 'center_y': 0.8}
                    disabled: disable_the_buttons.active
                MDFlatButton:
                    text: 'MDFlatButton'
                    pos_hint: {'center_x': 0.5, 'center_y': 0.6}
                    disabled: disable_the_buttons.active
                MDRaisedButton:
                    text: "MDRaisedButton"
                    elevation_normal: 2
                    opposite_colors: True
                    pos_hint: {'center_x': 0.5, 'center_y': 0.4}
                    disabled: disable_the_buttons.active
                MDFloatingActionButton:
                    id:                    float_act_btn
                    icon:                'plus'
                    opposite_colors:    True
                    elevation_normal:    8
                    pos_hint:            {'center_x': 0.5, 'center_y': 0.2}
                    disabled: disable_the_buttons.active
            Screen:
                name: 'card'
                MDCard:
                    size_hint: None, None
                    size:     dp(320), dp(180)
                    pos_hint: {'center_x': 0.5, 'center_y': 0.7}
                MDCard:
                    size_hint: None, None
                    size: dp(320), dp(180)
                    pos_hint: {'center_x': 0.5, 'center_y': 0.3}
                    BoxLayout:
                        orientation:'vertical'
                        padding: dp(8)
                        MDLabel:
                            text: 'Title'
                            theme_text_color: 'Secondary'
                            font_style:"Title"
                            size_hint_y: None
                            height: dp(36)
                        MDSeparator:
                            height: dp(1)
                        MDLabel:
                            text: 'Body'
                            theme_text_color: 'Primary'
            Screen:
                name: 'slider'
                BoxLayout:
                    MDSlider:
                        id: hslider
                        min:0
                        max:100
                        value: 10
                    MDSlider:
                        id: vslider
                        orientation:'vertical'
                        min:0
                        max:100
                        value: hslider.value
            Screen:
                name: 'dialog'
                MDRaisedButton:
                    text: "Open dialog"
                    size_hint: None, None
                    size: 3 * dp(48), dp(48)
                    pos_hint: {'center_x': 0.5, 'center_y': 0.7}
                    opposite_colors: True
                    on_release: app.show_example_dialog()
                MDRaisedButton:
                    text: "Open lengthy dialog"
                    size_hint: None, None
                    size: 3 * dp(48), dp(48)
                    pos_hint: {'center_x': 0.5, 'center_y': 0.3}
                    opposite_colors: True
                    on_release: app.show_example_long_dialog()
            Screen:
                name: 'grid'
                ScrollView:
                    do_scroll_x: False
                    GridLayout:
                        cols: 3
                        row_default_height: (self.width - self.cols*self.spacing[0])/self.cols
                        row_force_default: True
                        size_hint_y: None
                        height: self.minimum_height
                        padding: dp(4), dp(4)
                        spacing: dp(4)
                        SmartTileWithLabel:
                            mipmap: True
                            source: './assets/african-lion-951778_1280.jpg'
                            text: "African Lion"
                        SmartTile:
                            mipmap: True
                            source: './assets/beautiful-931152_1280.jpg'
                        SmartTile:
                            mipmap: True
                            source: './assets/african-lion-951778_1280.jpg'
                        SmartTile:
                            mipmap: True
                            source: './assets/guitar-1139397_1280.jpg'
                        SmartTile:
                            mipmap: True
                            source: './assets/robin-944887_1280.jpg'
                        SmartTile:
                            mipmap: True
                            source: './assets/kitten-1049129_1280.jpg'
                        SmartTile:
                            mipmap: True
                            source: './assets/light-bulb-1042480_1280.jpg'
                        SmartTile:
                            mipmap: True
                            source: './assets/tangerines-1111529_1280.jpg'
            Screen:
                name: 'labels'
                ScrollView:
                    do_scroll_x: False
                    BoxLayout:
                        orientation: 'vertical'
                        size_hint_y: None
                        height: dp(1000)
                        BoxLayout:
                            MDLabel:
                                font_style: 'Body1'
                                theme_text_color: 'Primary'
                                text: "Body1 label"
                                halign: 'center'
                            MDLabel:
                                font_style: 'Body2'
                                theme_text_color: 'Primary'
                                text: "Body2 label"
                                halign: 'center'
                        BoxLayout:
                            MDLabel:
                                font_style: 'Caption'
                                theme_text_color: 'Primary'
                                text: "Caption label"
                                halign: 'center'
                            MDLabel:
                                font_style: 'Subhead'
                                theme_text_color: 'Primary'
                                text: "Subhead label"
                                halign: 'center'
                        BoxLayout:
                            MDLabel:
                                font_style: 'Title'
                                theme_text_color: 'Primary'
                                text: "Title label"
                                halign: 'center'
                            MDLabel:
                                font_style: 'Headline'
                                theme_text_color: 'Primary'
                                text: "Headline label"
                                halign: 'center'
                        MDLabel:
                            font_style: 'Display1'
                            theme_text_color: 'Primary'
                            text: "Display1 label"
                            halign: 'center'
                            size_hint_y: None
                            height: self.texture_size[1] + dp(4)
                        MDLabel:
                            font_style: 'Display2'
                            theme_text_color: 'Primary'
                            text: "Display2 label"
                            halign: 'center'
                            size_hint_y: None
                            height: self.texture_size[1] + dp(4)
                        MDLabel:
                            font_style: 'Display3'
                            theme_text_color: 'Primary'
                            text: "Display3 label"
                            halign: 'center'
                            size_hint_y: None
                            height: self.texture_size[1] + dp(4)
                        MDLabel:
                            font_style: 'Display4'
                            theme_text_color: 'Primary'
                            text: "Display4 label"
                            halign: 'center'
                            size_hint_y: None
                            height: self.texture_size[1] + dp(4)
                        BoxLayout:
                            MDLabel:
                                font_style: 'Body1'
                                theme_text_color: 'Primary'
                                text: "Primary color"
                                halign: 'center'
                            MDLabel:
                                font_style: 'Body1'
                                theme_text_color: 'Secondary'
                                text: "Secondary color"
                                halign: 'center'
                        BoxLayout:
                            MDLabel:
                                font_style: 'Body1'
                                theme_text_color: 'Hint'
                                text: "Hint color"
                                halign: 'center'
                            MDLabel:
                                font_style: 'Body1'
                                theme_text_color: 'Error'
                                text: "Error color"
                                halign: 'center'
                        MDLabel:
                            font_style: 'Body1'
                            theme_text_color: 'Custom'
                            text_color: (0,1,0,.4)
                            text: "Custom"
                            halign: 'center'

            Screen:
                name: 'list'
                ScrollView:
                    do_scroll_x: False
                    MDList:
                        id: ml
                        OneLineListItem:
                            text: "One-line item"
                        TwoLineListItem:
                            text: "Two-line item"
                            secondary_text: "Secondary text here"
                        ThreeLineListItem:
                            text: "Three-line item"
                            secondary_text: "This is a multi-line label where you can fit more text than usual"
                        OneLineAvatarListItem:
                            text: "Single-line item with avatar"
                            AvatarSampleWidget:
                                source: './assets/avatar.png'
                        TwoLineAvatarListItem:
                            type: "two-line"
                            text: "Two-line item..."
                            secondary_text: "with avatar"
                            AvatarSampleWidget:
                                source: './assets/avatar.png'
                        ThreeLineAvatarListItem:
                            type: "three-line"
                            text: "Three-line item..."
                            secondary_text: "...with avatar..." + '\\n' + "and third line!"
                            AvatarSampleWidget:
                                source: './assets/avatar.png'
                        OneLineIconListItem:
                            text: "Single-line item with left icon"
                            IconLeftSampleWidget:
                                id: li_icon_1
                                icon: 'star-circle'
                        TwoLineIconListItem:
                            text: "Two-line item..."
                            secondary_text: "...with left icon"
                            IconLeftSampleWidget:
                                id: li_icon_2
                                icon: 'comment-text'
                        ThreeLineIconListItem:
                            text: "Three-line item..."
                            secondary_text: "...with left icon..." + '\\n' + "and third line!"
                            IconLeftSampleWidget:
                                id: li_icon_3
                                icon: 'sd'
                        OneLineAvatarIconListItem:
                            text: "Single-line + avatar&icon"
                            AvatarSampleWidget:
                                source: './assets/avatar.png'
                            IconRightSampleWidget:
                        TwoLineAvatarIconListItem:
                            text: "Two-line item..."
                            secondary_text: "...with avatar&icon"
                            AvatarSampleWidget:
                                source: './assets/avatar.png'
                            IconRightSampleWidget:
                        ThreeLineAvatarIconListItem:
                            text: "Three-line item..."
                            secondary_text: "...with avatar&icon..." + '\\n' + "and third line!"
                            AvatarSampleWidget:
                                source: './assets/avatar.png'
                            IconRightSampleWidget:
            Screen:
                name: 'menu'
                MDRaisedButton:
                    size_hint: None, None
                    size: 3 * dp(48), dp(48)
                    text: 'Open menu'
                    opposite_colors: True
                    pos_hint: {'center_x': 0.1, 'center_y': 0.9}
                    on_release: MDDropdownMenu(items=app.menu_items, width_mult=4).open(self)
                MDRaisedButton:
                    size_hint: None, None
                    size: 3 * dp(48), dp(48)
                    text: 'Open menu'
                    opposite_colors: True
                    pos_hint: {'center_x': 0.1, 'center_y': 0.1}
                    on_release: MDDropdownMenu(items=app.menu_items, width_mult=4).open(self)
                MDRaisedButton:
                    size_hint: None, None
                    size: 3 * dp(48), dp(48)
                    text: 'Open menu'
                    opposite_colors: True
                    pos_hint: {'center_x': 0.9, 'center_y': 0.1}
                    on_release: MDDropdownMenu(items=app.menu_items, width_mult=4).open(self)
                MDRaisedButton:
                    size_hint: None, None
                    size: 3 * dp(48), dp(48)
                    text: 'Open menu'
                    opposite_colors: True
                    pos_hint: {'center_x': 0.9, 'center_y': 0.9}
                    on_release: MDDropdownMenu(items=app.menu_items, width_mult=4).open(self)
                MDRaisedButton:
                    size_hint: None, None
                    size: 3 * dp(48), dp(48)
                    text: 'Open menu'
                    opposite_colors: True
                    pos_hint: {'center_x': 0.5, 'center_y': 0.5}
                    on_release: MDDropdownMenu(items=app.menu_items, width_mult=4).open(self)

            Screen:
                name: 'progress'
                MDCheckbox:
                    id:            chkbox
                    size_hint:    None, None
                    size:        dp(48), dp(48)
                    pos_hint:    {'center_x': 0.5, 'center_y': 0.4}
                    active: True
                MDSpinner:
                    id: spinner
                    size_hint: None, None
                    size: dp(46), dp(46)
                    pos_hint: {'center_x': 0.5, 'center_y': 0.5}
                    active: True if chkbox.active else False
            Screen:
                name: 'progressbars'
                BoxLayout:
                    orientation:'vertical'
                    padding: '8dp'

                    MDSlider:
                        id:progress_slider
                        min:0
                        max:100
                        value: 40

                    MDProgressBar:
                        value: progress_slider.value
                    MDProgressBar:
                        reversed: True
                        value: progress_slider.value

                    BoxLayout:
                        MDProgressBar:
                            orientation:"vertical"
                            reversed: True
                            value: progress_slider.value

                        MDProgressBar:
                            orientation:"vertical"
                            value: progress_slider.value

            Screen:
                name: 'selectioncontrols'
                MDCheckbox:
                    id:            grp_chkbox_1
                    group:        'test'
                    size_hint:    None, None
                    size:        dp(48), dp(48)
                    pos_hint:    {'center_x': 0.25, 'center_y': 0.5}
                MDCheckbox:
                    id:            grp_chkbox_2
                    group:        'test'
                    size_hint:    None, None
                    size:        dp(48), dp(48)
                    pos_hint:    {'center_x': 0.5, 'center_y': 0.5}
                MDSwitch:
                    size_hint:    None, None
                    size:        dp(36), dp(48)
                    pos_hint:    {'center_x': 0.75, 'center_y': 0.5}
                    _active:        False

            Screen:
                name: 'snackbar'
                MDRaisedButton:
                    text: "Create simple snackbar"
                    size_hint: None, None
                    size: 4 * dp(48), dp(48)
                    pos_hint: {'center_x': 0.5, 'center_y': 0.75}
                    opposite_colors: True
                    on_release: app.show_example_snackbar('simple')
                MDRaisedButton:
                    text: "Create snackbar with button"
                    size_hint: None, None
                    size: 4 * dp(48), dp(48)
                    pos_hint: {'center_x': 0.5, 'center_y': 0.5}
                    opposite_colors: True
                    on_release: app.show_example_snackbar('button')
                MDRaisedButton:
                    text: "Create snackbar with a lot of text"
                    size_hint: None, None
                    size: 5 * dp(48), dp(48)
                    pos_hint: {'center_x': 0.5, 'center_y': 0.25}
                    opposite_colors: True
                    on_release: app.show_example_snackbar('verylong')

            Screen:
                name: 'textfields'
                ScrollView:
                    BoxLayout:
                        orientation: 'vertical'
                        size_hint_y: None
                        height: self.minimum_height
                        padding: dp(48)
                        spacing: 10
                        MDTextField:
                            hint_text: "No helper text"
                        MDTextField:
                            hint_text: "Helper text on focus"
                            helper_text: "This will disappear when you click off"
                            helper_text_mode: "on_focus"
                        MDTextField:
                            hint_text: "Persistent helper text"
                            helper_text: "Text is always here"
                            helper_text_mode: "persistent"
                        MDTextField:
                            id: text_field_error
                            hint_text: "Helper text on error (Hit Enter with two characters here)"
                            helper_text: "Two is my least favorite number"
                            helper_text_mode: "on_error"
                        MDTextField:
                            hint_text: "Max text length = 10"
                            max_text_length: 10
                        MDTextField:
                            hint_text: "required = True"
                            required: True
                            helper_text_mode: "on_error"
                        MDTextField:
                            multiline: True
                            hint_text: "Multi-line text"
                            helper_text: "Messages are also supported here"
                            helper_text_mode: "persistent"
                        MDTextField:
                            hint_text: "color_mode = \'accent\'"
                            color_mode: 'accent'
                        MDTextField:
                            hint_text: "color_mode = \'custom\'"
                            color_mode: 'custom'
                            helper_text_mode: "on_focus"
                            helper_text: "Color is defined by \'line_color_focus\' property"
                            line_color_focus: self.theme_cls.opposite_bg_normal  # This is the color used by the textfield
                        MDTextField:
                            hint_text: "disabled = True"
                            disabled: True

            Screen:
                name: 'theming'
                BoxLayout:
                    orientation: 'vertical'
                    size_hint_y: None
                    height: dp(80)
                    center_y: self.parent.center_y
                    MDRaisedButton:
                        size_hint: None, None
                        size: 3 * dp(48), dp(48)
                        center_x: self.parent.center_x
                        text: 'Change theme'
                        on_release: MDThemePicker().open()
                        opposite_colors: True
                        pos_hint: {'center_x': 0.5}
                    MDLabel:
                        text: "Current: " + app.theme_cls.theme_style + ", " + app.theme_cls.primary_palette
                        theme_text_color: 'Primary'
                        pos_hint: {'center_x': 0.5}
                        halign: 'center'

            Screen:
                name: 'toolbar'
                Toolbar:
                    title: "Simple toolbar"
                    pos_hint: {'center_x': 0.5, 'center_y': 0.75}
                    md_bg_color: get_color_from_hex(colors['Teal']['500'])
                    background_palette: 'Teal'
                    background_hue: '500'
                Toolbar:
                    title: "Toolbar with right buttons"
                    pos_hint: {'center_x': 0.5, 'center_y': 0.5}
                    md_bg_color: get_color_from_hex(colors['Amber']['700'])
                    background_palette: 'Amber'
                    background_hue: '700'
                    right_action_items: [['content-copy', lambda x: None]]
                Toolbar:
                    title: "Toolbar with left and right buttons"
                    pos_hint: {'center_x': 0.5, 'center_y': 0.25}
                    md_bg_color: get_color_from_hex(colors['DeepPurple']['A400'])
                    background_palette: 'DeepPurple'
                    background_hue: 'A400'
                    left_action_items: [['arrow-left', lambda x: None]]
                    right_action_items: [['lock', lambda x: None], \
                        ['camera', lambda x: None], \
                        ['play', lambda x: None]]
            Screen:
                name: 'tabs'
                MDTabbedPanel:
                    id: tab_panel
                    tab_display_mode:'text'

                    MDTab:
                        name: 'music'
                        text: "Music" # Why are these not set!!!
                        icon: "playlist-play"
                        MDLabel:
                            font_style: 'Body1'
                            theme_text_color: 'Primary'
                            text: "Here is my music list :)"
                            halign: 'center'
                    MDTab:
                        name: 'movies'
                        text: 'Movies'
                        icon: "movie"

                        MDLabel:
                            font_style: 'Body1'
                            theme_text_color: 'Primary'
                            text: "Show movies here :)"
                            halign: 'center'

                BoxLayout:
                    size_hint_y:None
                    height: '48dp'
                    padding: '12dp'
                    MDLabel:
                        font_style: 'Body1'
                        theme_text_color: 'Primary'
                        text: "Use icons"
                        size_hint_x:None
                        width: '64dp'
                    MDCheckbox:
                        on_state: tab_panel.tab_display_mode = 'icons' if tab_panel.tab_display_mode=='text' else 'text'
            Screen:
                name: 'accordion'
                BoxLayout:
                    MDAccordion:
                        orientation: 'vertical'
                        size_hint_x: None
                        width: '240dp'
                        MDAccordionItem:
                            title:'Item 1'
                            icon: 'home'
                            MDAccordionSubItem:
                                text: "Subitem 1"
                            MDAccordionSubItem:
                                text: "Subitem 2"
                            MDAccordionSubItem:
                                text: "Subitem 3"
                        MDAccordionItem:
                            title:'Item 2'
                            icon: 'earth'
                            MDAccordionSubItem:
                                text: "Subitem 4"
                            MDAccordionSubItem:
                                text: "Subitem 5"
                            MDAccordionSubItem:
                                text: "Subitem 6"
                        MDAccordionItem:
                            title:'Item 3'
                            icon: 'account'
                            MDAccordionSubItem:
                                text: "Subitem 7"
                            MDAccordionSubItem:
                                text: "Subitem 8"
                            MDAccordionSubItem:
                                text: "Subitem 9"
                    MDLabel:
                        text: 'Content'
                        theme_text_color: 'Primary'
            Screen:
                name: 'pickers'
                BoxLayout:
                    spacing: dp(40)
                    orientation: 'vertical'
                    size_hint_x: None
                    pos_hint: {'center_x': 0.5, 'center_y': 0.5}
                    BoxLayout:
                        orientation: 'vertical'
                        # size_hint: (None, None)
                        MDRaisedButton:
                            text: "Open time picker"
                            size_hint: None, None
                            size: 3 * dp(48), dp(48)
                            pos_hint: {'center_x': 0.5, 'center_y': 0.5}
                            opposite_colors: True
                            on_release: app.show_example_time_picker()
                        MDLabel:
                            id: time_picker_label
                            theme_text_color: 'Primary'
                            size_hint: None, None
                            size: dp(48)*3, dp(48)
                            pos_hint: {'center_x': 0.5, 'center_y': 0.5}
                        BoxLayout:
                            size: dp(48)*3, dp(48)
                            size_hint: (None, None)
                            pos_hint: {'center_x': 0.5, 'center_y': 0.5}
                            MDLabel:
                                theme_text_color: 'Primary'
                                text: "Start on previous time"
                                size_hint: None, None
                                size: dp(130), dp(48)
                            MDCheckbox:
                                id: time_picker_use_previous_time
                                size_hint: None, None
                                size: dp(48), dp(48)
                    BoxLayout:
                        orientation: 'vertical'
                        MDRaisedButton:
                            text: "Open date picker"
                            size_hint: None, None
                            size: 3 * dp(48), dp(48)
                            pos_hint: {'center_x': 0.5, 'center_y': 0.5}
                            opposite_colors: True
                            on_release: app.show_example_date_picker()
                        MDLabel:
                            id: date_picker_label
                            theme_text_color: 'Primary'
                            size_hint: None, None
                            size: dp(48)*3, dp(48)
                            pos_hint: {'center_x': 0.5, 'center_y': 0.5}
                        BoxLayout:
                            size: dp(48)*3, dp(48)
                            size_hint: (None, None)
                            pos_hint: {'center_x': 0.5, 'center_y': 0.5}
                            MDLabel:
                                theme_text_color: 'Primary'
                                text: "Start on previous date"
                                size_hint: None, None
                                size: dp(130), dp(48)
                            MDCheckbox:
                                id: date_picker_use_previous_date
                                size_hint: None, None
                                size: dp(48), dp(48)
            Screen:
                name: 'bottom_navigation'
                MDBottomNavigation:
                    id: bottom_navigation_demo
                    MDBottomNavigationItem:
                        name: 'octagon'
                        text: "Warning"
                        icon: "alert-octagon"
                        MDLabel:
                            font_style: 'Body1'
                            theme_text_color: 'Primary'
                            text: "Warning!"
                            halign: 'center'
                    MDBottomNavigationItem:
                        name: 'banking'
                        text: "Bank"
                        icon: 'bank'
                        BoxLayout:
                            orientation: 'vertical'
                            size_hint_y: None
                            padding: dp(48)
                            spacing: 10
                            MDTextField:
                                hint_text: "You can put any widgets here"
                                helper_text: "Hello :)"
                                helper_text_mode: "on_focus"
                    MDBottomNavigationItem:
                        name: 'bottom_navigation_desktop_1'
                        text: "Hello"
                        icon: 'alert'
                        id: bottom_navigation_desktop_1
                        BoxLayout:
                            orientation: 'vertical'
                            size_hint_y: None
                            padding: dp(48)
                            spacing: 10
                            MDTextField:
                                hint_text: "Hello again"
                    MDBottomNavigationItem:
                        name: 'bottom_navigation_desktop_2'
                        text: "Food"
                        icon: 'food'
                        id: bottom_navigation_desktop_2
                        MDLabel:
                            font_style: 'Body1'
                            theme_text_color: 'Primary'
                            text: "Cheese!"
                            halign: 'center'
            Screen:
                name: 'nav_drawer'
                HackedDemoNavDrawer:
                    # NavigationDrawerToolbar:
                    #     title: "Navigation Drawer Widgets"
                    NavigationDrawerIconButton:
                        icon: 'checkbox-blank-circle'
                        text: "Badge text ---->"
                        badge_text: "99+"
                    NavigationDrawerIconButton:
                        active_color_type: 'accent'
                        text: "Accent active color"
                    NavigationDrawerIconButton:
                        active_color_type: 'custom'
                        text: "Custom active color"
                        active_color: [1, 0, 1, 1]
                    NavigationDrawerIconButton:
                        use_active: False
                        text: "Use active = False"
                    NavigationDrawerIconButton:
                        text: "Different icon"
                        icon: 'alarm'
                    NavigationDrawerDivider:
                    NavigationDrawerSubheader:
                        text: "NavigationDrawerSubheader"
                    NavigationDrawerIconButton:
                        text: "NavigationDrawerDivider \/"
                    NavigationDrawerDivider:

'''

class HackedDemoNavDrawer(MDNavigationDrawer):
    # DO NOT USE
    def add_widget(self, widget, index=0):
        if issubclass(widget.__class__, BaseListItem):
            self._list.add_widget(widget, index)
            if len(self._list.children) == 1:
                widget._active = True
                self.active_item = widget
            # widget.bind(on_release=lambda x: self.panel.toggle_state())
            widget.bind(on_release=lambda x: x._set_active(True, list=self))
        elif issubclass(widget.__class__, NavigationDrawerHeaderBase):
            self._header_container.add_widget(widget)
        else:
            super(MDNavigationDrawer, self).add_widget(widget, index)

class KitchenSink(App):
    theme_cls = ThemeManager()
    previous_date = ObjectProperty()
    title = "KivyMD Kitchen Sink"

    menu_items = [
        {'viewclass': 'MDMenuItem',
         'text': 'Example item'},
        {'viewclass': 'MDMenuItem',
         'text': 'Example item'},
        {'viewclass': 'MDMenuItem',
         'text': 'Example item'},
        {'viewclass': 'MDMenuItem',
         'text': 'Example item'},
        {'viewclass': 'MDMenuItem',
         'text': 'Example item'},
        {'viewclass': 'MDMenuItem',
         'text': 'Example item'},
        {'viewclass': 'MDMenuItem',
         'text': 'Example item'},
    ]

    def build(self):
        main_widget = Builder.load_string(main_widget_kv)
        # self.theme_cls.theme_style = 'Dark'

        main_widget.ids.text_field_error.bind(
            on_text_validate=self.set_error_message,
            on_focus=self.set_error_message)
        self.bottom_navigation_remove_mobile(main_widget)
        return main_widget

    def bottom_navigation_remove_mobile(self, widget):
        # Removes some items from bottom-navigation demo when on mobile
        if DEVICE_TYPE == 'mobile':
            widget.ids.bottom_navigation_demo.remove_widget(widget.ids.bottom_navigation_desktop_2)
        if DEVICE_TYPE == 'mobile' or DEVICE_TYPE == 'tablet':
            widget.ids.bottom_navigation_demo.remove_widget(widget.ids.bottom_navigation_desktop_1)

    def show_example_snackbar(self, snack_type):
        if snack_type == 'simple':
            Snackbar(text="This is a snackbar!").show()
        elif snack_type == 'button':
            Snackbar(text="This is a snackbar", button_text="with a button!", button_callback=lambda *args: 2).show()
        elif snack_type == 'verylong':
            Snackbar(text="This is a very very very very very very very long snackbar!").show()

    def show_example_dialog(self):
        content = MDLabel(font_style='Body1',
                          theme_text_color='Secondary',
                          text="This is a dialog with a title and some text. "
                               "That's pretty awesome right!",
                          size_hint_y=None,
                          valign='top')
        content.bind(texture_size=content.setter('size'))
        self.dialog = MDDialog(title="This is a test dialog",
                               content=content,
                               size_hint=(.8, None),
                               height=dp(200),
                               auto_dismiss=False)

        self.dialog.add_action_button("Dismiss",
                                      action=lambda *x: self.dialog.dismiss())
        self.dialog.open()

    def show_example_long_dialog(self):
        content = MDLabel(font_style='Body1',
                          theme_text_color='Secondary',
                          text="Lorem ipsum dolor sit amet, consectetur "
                               "adipiscing elit, sed do eiusmod tempor "
                               "incididunt ut labore et dolore magna aliqua. "
                               "Ut enim ad minim veniam, quis nostrud "
                               "exercitation ullamco laboris nisi ut aliquip "
                               "ex ea commodo consequat. Duis aute irure "
                               "dolor in reprehenderit in voluptate velit "
                               "esse cillum dolore eu fugiat nulla pariatur. "
                               "Excepteur sint occaecat cupidatat non "
                               "proident, sunt in culpa qui officia deserunt "
                               "mollit anim id est laborum.",
                          size_hint_y=None,
                          valign='top')
        content.bind(texture_size=content.setter('size'))
        self.dialog = MDDialog(title="This is a long test dialog",
                               content=content,
                               size_hint=(.8, None),
                               height=dp(200),
                               auto_dismiss=False)

        self.dialog.add_action_button("Dismiss",
                                      action=lambda *x: self.dialog.dismiss())
        self.dialog.open()

    def get_time_picker_data(self, instance, time):
        self.root.ids.time_picker_label.text = str(time)
        self.previous_time = time

    def show_example_time_picker(self):
        self.time_dialog = MDTimePicker()
        self.time_dialog.bind(time=self.get_time_picker_data)
        if self.root.ids.time_picker_use_previous_time.active:
            try:
                self.time_dialog.set_time(self.previous_time)
            except AttributeError:
                pass
        self.time_dialog.open()

    def set_previous_date(self, date_obj):
        self.previous_date = date_obj
        self.root.ids.date_picker_label.text = str(date_obj)

    def show_example_date_picker(self):
        if self.root.ids.date_picker_use_previous_date.active:
            pd = self.previous_date
            try:
                MDDatePicker(self.set_previous_date,
                             pd.year, pd.month, pd.day).open()
            except AttributeError:
                MDDatePicker(self.set_previous_date).open()
        else:
            MDDatePicker(self.set_previous_date).open()

    def show_example_bottom_sheet(self):
        bs = MDListBottomSheet()
        bs.add_item("Here's an item with text only", lambda x: x)
        bs.add_item("Here's an item with an icon", lambda x: x,
                    icon='clipboard-account')
        bs.add_item("Here's another!", lambda x: x, icon='nfc')
        bs.open()

    def show_example_grid_bottom_sheet(self):
        bs = MDGridBottomSheet()
        bs.add_item("Facebook", lambda x: x,
                    icon_src='./assets/facebook-box.png')
        bs.add_item("YouTube", lambda x: x,
                    icon_src='./assets/youtube-play.png')
        bs.add_item("Twitter", lambda x: x,
                    icon_src='./assets/twitter.png')
        bs.add_item("Da Cloud", lambda x: x,
                    icon_src='./assets/cloud-upload.png')
        bs.add_item("Camera", lambda x: x,
                    icon_src='./assets/camera.png')
        bs.open()

    def set_error_message(self, *args):
        if len(self.root.ids.text_field_error.text) == 2:
            self.root.ids.text_field_error.error = True
        else:
            self.root.ids.text_field_error.error = False

    def on_pause(self):
        return True

    def on_stop(self):
        pass

class AvatarSampleWidget(ILeftBody, Image):
    pass

class IconLeftSampleWidget(ILeftBodyTouch, MDIconButton):
    pass

class IconRightSampleWidget(IRightBodyTouch, MDCheckbox):
    pass

if __name__ == '__main__':
    KitchenSink().run()

buildozer.spec

[app]

# (str) Title of your application
title = AA 
# (str) Package name
package.name = AA

# (str) Package domain (needed for android/ios packaging)
package.domain = com.aasoft

# (str) Source code where the main.py live
source.dir = .

# (list) Source files to include (let empty to include all the files)
#source.include_exts = py,png,jpg,kv,atlas,ttf

# (list) List of inclusions using pattern matching
#source.include_patterns = assets/*,images/*.png

# (list) Source files to exclude (let empty to not exclude anything)
source.exclude_exts = spec

# (list) List of directory to exclude (let empty to not exclude anything)
source.exclude_dirs = temp, bin

# (list) List of exclusions using pattern matching
#source.exclude_patterns = license,images/*/*.jpg
source.exclude_patterns = buildozer.spec

# (str) Application versioning (method 1)
version = 1.0.1

# (str) Application versioning (method 2)
# version.regex = __version__ = ['"](.*)['"]
# version.filename = %(source.dir)s/main.py

# (list) Application requirements
# comma separated e.g. requirements = sqlite3,kivy
requirements = python3,kivy==master,pillow,requests,kivymd

# (str) The directory in which python-for-android should look for your own build recipes (if any)

# (str) Custom source folders for requirements
# Sets custom source for any requirements with recipes
requirements.source.kivymd = ../KivyMD-master/

# (list) Garden requirements
#garden_requirements =

# (str) Presplash of the application
presplash.filename = %(source.dir)s/assets/presplash.jpg

# (str) Icon of the application
icon.filename = %(source.dir)s/assets/aa_logo.png

# (str) Supported orientation (one of landscape, sensorLandscape, portrait or all)
orientation = all

# (list) List of service to declare
#services = NAME:ENTRYPOINT_TO_PY,NAME2:ENTRYPOINT2_TO_PY

#
# OSX Specific
#

#
author = Copyright AASoftware©

# change the major version of python used by the app
osx.python_version = 3

# Kivy version to use
osx.kivy_version = 1.9.1

#
# Android specific
#

# (bool) Indicate if the application should be fullscreen or not
fullscreen = 0

# (string) Presplash background color (for new android toolchain)
# Supported formats are: #RRGGBB #AARRGGBB or one of the following names:
# red, blue, green, black, white, gray, cyan, magenta, yellow, lightgray,
# darkgray, grey, lightgrey, darkgrey, aqua, fuchsia, lime, maroon, navy,
# olive, purple, silver, teal.
#android.presplash_color = #FFFFFF

# (list) Permissions
android.permissions = INTERNET

# (int) Target Android API, should be as high as possible. 27
android.api = 27

# (int) Minimum API your APK will support.
android.minapi = 21

# (int) Android SDK version to use
#android.sdk = 20

# (str) Android NDK version to use 10e
android.ndk = 17c

# (int) Android NDK API to use. This is the minimum API your app will support, it should usually match android.minapi.
#android.ndk_api = 21

# (bool) Use --private data storage (True) or --dir public storage (False)
#android.private_storage = True

# (str) Android NDK directory (if empty, it will be automatically downloaded.)
#android.ndk_path =/home/ndk/android-ndk-r17c/

# (str) Android SDK directory (if empty, it will be automatically downloaded.)
#android.sdk_path =/home/ndk/

# (str) ANT directory (if empty, it will be automatically downloaded.)
#android.ant_path =

# (bool) If True, then skip trying to update the Android sdk
# This can be useful to avoid excess Internet downloads or save time
# when an update is due and you just want to test/build your package
android.skip_update = True

# (bool) If True, then automatically accept SDK license
# agreements. This is intended for automation only. If set to False,
# the default, you will be shown the license when first running
# buildozer.
android.accept_sdk_license = True

# (str) Android entry point, default is ok for Kivy-based app
#android.entrypoint = org.renpy.android.PythonActivity

# (list) Pattern to whitelist for the whole project
#android.whitelist =

# (str) Path to a custom whitelist file
#android.whitelist_src =

# (str) Path to a custom blacklist file
#android.blacklist_src =

# (list) List of Java .jar files to add to the libs so that pyjnius can access
# their classes. Don't add jars that you do not need, since extra jars can slow
# down the build process. Allows wildcards matching, for example:
# OUYA-ODK/libs/*.jar
#android.add_jars = foo.jar,bar.jar,path/to/more/*.jar

# (list) List of Java files to add to the android project (can be java or a
# directory containing the files)
#android.add_src =

# (list) Android AAR archives to add (currently works only with sdl2_gradle
# bootstrap)
#android.add_aars =

# (list) Gradle dependencies to add (currently works only with sdl2_gradle
# bootstrap)
#android.gradle_dependencies =

# (list) Java classes to add as activities to the manifest.
#android.add_activites = com.example.ExampleActivity

# (str) python-for-android branch to use, defaults to master
p4a.branch = master

# (str) OUYA Console category. Should be one of GAME or APP
# If you leave this blank, OUYA support will not be enabled
#android.ouya.category = APP

# (str) Filename of OUYA Console icon. It must be a 732x412 png image.
#android.ouya.icon.filename = %(source.dir)s/data/ouya_icon.png

# (str) XML file to include as an intent filters in <activity> tag
#android.manifest.intent_filters =

# (str) launchMode to set for the main activity
#android.manifest.launch_mode = standard

# (list) Android additional libraries to copy into libs/armeabi
#android.add_libs_armeabi = libs/android/*.so
#android.add_libs_armeabi_v7a = libs/android-v7/*.so
#android.add_libs_x86 = libs/android-x86/*.so
#android.add_libs_mips = libs/android-mips/*.so

# (bool) Indicate whether the screen should stay on
# Don't forget to add the WAKE_LOCK permission if you set this to True
#android.wakelock = False

# (list) Android application meta-data to set (key=value format)
#android.meta_data =

# (list) Android library project to add (will be added in the
# project.properties automatically.)
#android.library_references =

# (str) Android logcat filters to use
#android.logcat_filters = *:S python:D

# (bool) Copy library instead of making a libpymodules.so
#android.copy_libs = 1

# (str) The Android arch to build for, choices: armeabi-v7a, arm64-v8a, x86
android.arch = x86

#
# Python for android (p4a) specific
#

# (str) python-for-android git clone directory (if empty, it will be automatically cloned from github)
#p4a.source_dir =

# (str) The directory in which python-for-android should look for your own build recipes (if any)
p4a.local_recipes = %(source.dir)s/../KivyMD-master/gitlab-ci/p4a-recipes/
p4a.force-build = True

# (str) Filename to the hook for p4a
#p4a.hook =

# (str) Bootstrap to use for android builds
# p4a.bootstrap = sdl2

# (int) port number to specify an explicit --port= p4a argument (eg for bootstrap flask)
#p4a.port =

#
# iOS specific
#

# (str) Path to a custom kivy-ios folder
#ios.kivy_ios_dir = ../kivy-ios
# Alternately, specify the URL and branch of a git checkout:
ios.kivy_ios_url = https://github.com/kivy/kivy-ios
ios.kivy_ios_branch = master

# Another platform dependency: ios-deploy
# Uncomment to use a custom checkout
#ios.ios_deploy_dir = ../ios_deploy
# Or specify URL and branch
ios.ios_deploy_url = https://github.com/phonegap/ios-deploy
ios.ios_deploy_branch = 1.7.0

# (str) Name of the certificate to use for signing the debug version
# Get a list of available identities: buildozer ios list_identities
#ios.codesign.debug = "iPhone Developer: <lastname> <firstname> (<hexstring>)"

# (str) Name of the certificate to use for signing the release version
#ios.codesign.release = %(ios.codesign.debug)s

[buildozer]

# (int) Log level (0 = error only, 1 = info, 2 = debug (with command output))
log_level = 2

# (int) Display warning if buildozer is run as root (0 = False, 1 = True)
warn_on_root = 0

# (str) Path to build artifact storage, absolute or relative to spec file
# build_dir = ./.buildozer

# (str) Path to build output (i.e. .apk, .ipa) storage
# bin_dir = ./bin

#    -----------------------------------------------------------------------------
#    List as sections
#
#    You can define all the "list" as [section:key].
#    Each line will be considered as a option to the list.
#    Let's take [app] / source.exclude_patterns.
#    Instead of doing:
#
#[app]
#source.exclude_patterns = license,data/audio/*.wav,data/images/original/*
#
#    This can be translated into:
#
#[app:source.exclude_patterns]
#license
#data/audio/*.wav
#data/images/original/*
#

#    -----------------------------------------------------------------------------
#    Profiles
#
#    You can extend section / key with a profile
#    For example, you want to deploy a demo version of your application without
#    HD content. You could first change the title to add "(demo)" in the name
#    and extend the excluded directories to remove the HD content.
#
#[app@demo]
#title = My Application (demo)
#
#[app:source.exclude_patterns@demo]
#images/hd/*
#
#    Then, invoke the command line with the "demo" profile:
#
#buildozer --profile demo android debug

[AndreMiras]

Hi @quitegreensky Thanks for the bug report. From your buildozer.spec I see you're using requirements = python3,kivy==master,pillow,requests,kivymd In this case kivymd points to https://pypi.org/project/kivymd/ which in fact is another fork, see here https://github.com/HeaTTheatR/KivyMD If you want to try my fork instead, try to put kivy-garden.kivymd in your requirements.

Also I have some questions.

1. Which device are you running on?
2. Can you record a video to demo the issue?
3. Which Play store version are you using?
4. Can you try with my fork too kivy-garden.kivymd?

Also I didn't provide a ready to use demo with buildozer.spec file, but I will soon. I should also upload the demo myself to the store (refs #11 and #12), because I'm not sure what version of the repo the play store is using.

[quitegreensky]

Thanks for replay! I have also tried https://github.com/HeaTTheatR/KivyMD and your fork but i get same result:

Here are recordings: This is what i made : download

This is what i downloaded from Latest Play store version : download

Differences might not be so clear in screen recordings . But there are significant differences in performance. Also deleted .buildozer folder and changed android.arch = arm64-v8a (which is correct i guess) and built the package from scratch. same result again

Finally the package: download (same .spec above with arm64-v8a and kivy-garden.kivymd in requirements) My device is BAC-L21 - Android 8

[AndreMiras]

Thanks for sharing. Indeed it's not clear on the video, but I think I see, you have the lag when clicking an item from the navigation drawer correct? Basically the lag happens when loading a new Screen, I've seen that in the past. And in fact I've seen it also on some official Google apps. The way I could workaround this was to impose a delay between the drawer animation and the actual screen loading into memory. And I suspect Google is doing the same actually. I may introduce this fix on this repo as well.

Edit: If you feel like it, you can take a look here, bug report https://github.com/AndreMiras/PyWallet/issues/122 and fix https://github.com/AndreMiras/PyWallet/commit/b514479ba1387652266127b787c2682bfdfd1ca0 To see how the workaround works. Basically I delayed actual screen loading to memory via Clock.schedule_once() while the animation of closing the drawer runs smoothly. Once the animation is done the screen loads. At the end the user experiences less lag

[quitegreensky]

Thanks a lot! I will try it and send results here. but the lags are not just in transitions. there are in all animations( such button, labels...) can you please see the apk package from my previous comment to confirm my problem? or to see it working fine for you... As you said before this will be great if you make your own demo application and send spec file to see what the problem is.

[AndreMiras]

Oh OK, I didn't know about all the other animations, that's annoying indeed. As for the apk package, I cannot try because I'm paranoid, that's why I often use F-Droid. So yes I'll work on #11 and #12 so you can actually try the APK generated from this repo.

[AndreMiras]

FYI perf issues might be related to https://github.com/kivy/python-for-android/issues/2002

[quitegreensky]

FYI perf issues might be related to kivy/python-for-android#2002

yeah. The problem lies with current version of kivy. version 1.10.1 works fine!

[quitegreensky]

FYI perf issues might be related to kivy/python-for-android#2002

Changing kivy version to 1.10.1 solves the fps problem but application's orientation is always in landscape. How can i solve this issue?

[AndreMiras]

Good news. Yes there're quite some ways to solve it. The orientation was fixed in a commit by @inclement in between these two versions. So you could for example cherry pick this and make a recipe patch in your local recipes. But I would suggest something. You can try to kinda git bisec workflow to find what is the commit that brought the fps regression. If you find the exact commit you can make open an upstream issue to document it. It should be fairly easy to find the exact commit, it's just a matter of trying the different versions. I think you can put a commit hash in the version placeholder.

[quitegreensky]

Here is my update: I did some version comparison and found that the fps regression issue comes from #4219. Every version before this commit works fine .

[AndreMiras]

Very nice investigation work :clap: Well now until it's fixed upstream, you can probably make a custom kivy recipe in your project that patch reverse this commit. That way you can be up to date with kivy with the minimum hassle

[Matan22g]

Very nice investigation work 👏 Well now until it's fixed upstream, you can probably make a custom kivy recipe in your project that patch reverse this commit. That way you can be up to date with kivy with the minimum hassle

hey I've experienced the same lag in my kivymd project, and I didnt quite undestand how to use your tip, could you explain how can I make a custom kivy recipe in my project that patch reverse that problemtic commit?