CODEWITHSUNDEEP
pythonanimationbuildkivy
user5179581
user5179581

Reputation:

How to animate an image background?

So far, I have concocted code that will output an image. But when I try to animate it, I get a "build takes 2 arguments. 1 given" error. 

import kivy 

from kivy.app import App 
from kivy.uix.image import Image 
from kivy.animation import Animation 
from kivy.uix.widget import Widget 


class TheApp(App): 

    def build(self):
        image = Image(source= "psychTREE.jpg")
        image.allow_stretch= True 
        image= TheApp.animation() 
        image.animate()
        return image 


    def animation(self, instance):
        animate = Animation(pos = (100, 100), t= "out_bounce") 
        animate += Animation(pos= (200, 100), t = "out_bounce") 
        animate &= Animation(size = (500, 500))
        animate += Animation(size = (100, 50))
        animate.start(instance)



if __name__ == "__main__":
    TheApp().run()

Any suggestions or ideas on how to fix this code would be greatly appreciated. I'm trying to animate the image so it moves side to side and up and down in the background screen.

Upvotes: 1

Views: 969

Answers (1)

inclement
inclement

Reputation: 29488

You have multiple issues:

image= TheApp.animation()
image.animate()

  1. animation is a method of TheApp. You should call it via an instance, e.g. self.animation(). With your way, you're calling it as a normal function and so it does not receive the implicit self argument, hence the too few arguments problem.

  2. animation expects an argument beyond just the normally-implicit self (you named this instance), but you do not pass one, so the function call is still invalid.

  3. animation doesn't return anything, so even if it worked this would set image to None.

  4. Neither kivy.uix.image.Image, nor None, have an animate method - so I don't know what you expect image.animate() to do.

Upvotes: 2

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