Fading images at load

[rb]

Hi I’m trying to load in an image using ui.imageView then setting the alpha to 0.0 and then using ui.animate to alter that alpha to a non zero value. I can’t get this to gradually fade however - the alpha just jumps after the specified time.
What am I doing wrong here? This simple solution has worked fine for me previously for buttons etc.
I’m going for a gradually blending slideshow effect.

[cvp]

@rb try this

import ui
iv = ui.ImageView()
iv.frame = (0,0,400,400)
v = ui.View()
v.frame = iv.frame
v.background_color = (1,1,1,0)
iv.add_subview(v)
iv.present('sheet')
iv.image = ui.Image.named('test:Peppers')
def anim():
	v.background_color = (1,1,1,1)	
ui.animate(anim,5) 

[rb]

Thankyou - that’s masking an image with a colour and altering the alpha of the colour - isnt there a way to gradually alter an imageViews alpha over time?

[cvp]

@rb try

import ui
from objc_util import *
iv = ui.ImageView()
iv.frame = (0,0,400,400)
ObjCInstance(iv).alpha = 0
iv.present('sheet')
iv.image = ui.Image.named('test:Peppers')
def anim():
	ObjCInstance(iv).alpha = 1
ui.animate(anim,5) 

[rb]

Thanks that’s exactly what I’m after!

[mikael]

@rb, if you do a lot of little animations, I will once again plug the scripter lib. You can pip install it.