Use Gif Logo For Loading Screen In Kivy

You can achieve desired output from following code

from import App
from kivy.uix.boxlayout import BoxLayout
from kivy.lang import Builder
from kivy.clock import Clock

from kivy.uix.screenmanager import ScreenManager, Screen, WipeTransition, FadeTransition, NoTransition
from kivy.uix.floatlayout import FloatLayout


    orientation: "vertical"
        id: gif
        source: 'load.gif'
        pos: self.pos
        size_hint: None, None
        size: root.size
        allow_stretch: True
        keep_ratio: False
        anim_delay: -1
        anim_loop: 1
    orientation: "vertical"
        text:"Second Screen"

class FirstScreen(Screen, FloatLayout):
    secs = 0

    def __init__(self, **kwargs):
        super(FirstScreen, self).__init__(**kwargs)
        self.orientation = "vertical"
        Clock.schedule_interval(self.update_time, 1)

    def update_time(self, sec):
        self.secs = self.secs+1
        '''  30 seconds'''
        if self.secs == 30:
            self.manager.current = 'second'

    def on_enter(self):
        self.ids.gif.anim_delay = 0.10

class SecondScreen(Screen, FloatLayout):

    def __init__(self, **kwargs):
        super(SecondScreen, self).__init__(**kwargs)
        self.orientation = "vertical"

class ExampleApp(App):

    def build(self):
        sm = ScreenManager(transition=NoTransition())
        return sm

if __name__ == "__main__":

use anim_delay to delay the animation

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