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i have 2 images in my app that rotate. they are png images, and they rotate forever. after the images have been on screen for a little while they get stuck on the screen.. the bizarre thing is, if i were to describe what it looks like, its exactly like burn in on a plasma screen, except in this case its a rotating image not a stationary image. the longer this spinning png image is on the screen, the more visible it is once the image is removed from the screen, and the longer it takes for it to fade away.
even after closing the app completely, close it, delete it, the image is still half visible on the screen, no matter what is open, this app, the springboard, another app. over the next minute or 2 depending on how long it was originally on screen for, the image fades away until nothing can be seen.
when the page comes on screen, the spinning images are hidden, they are behind a rub to reveal layer. rubbing the screens makes the top image disappear revealing these images underneath. i am unsure if that has anything to do with the issue.
it could be the device's screen. as what your describing basically breaks every rule in the book. try it on a different device, or if you have no other device try a simulator. but if what your saying is true, that its not your screen. ios has a prettttyy huge bug. haha. or if your willing to at least post all of the problem code so we can try it out. its all up to you.
it could be the device's screen. as what your describing basically breaks every rule in the book. try it on a different device, or if you have no other device try a simulator. but if what your saying is true, that its not your screen. ios has a prettttyy huge bug. haha. or if your willing to at least post all of the problem code so we can try it out. its all up to you.
ive tried it on both my ipad 2 with ios5, and my ipad 1 with ios 4.3.3. 2 different models, and 2 different major operating systems, both do it exactly the same.
thats pretty much what i thought, what i described "should be impossible" as far as im aware, no matter what happens, (as long as u stay within the apple guidelines and use public api's), the app should not be able to affect the rest of the operating system or other apps. when the app is closed it should be finished. am i correct in saying that?
i have 2 images in my app that rotate. they are png images, and they rotate forever. after the images have been on screen for a little while they get stuck on the screen.. the bizarre thing is, if i were to describe what it looks like, its exactly like burn in on a plasma screen, except in this case its a rotating image not a stationary image. the longer this spinning png image is on the screen, the more visible it is once the image is removed from the screen, and the longer it takes for it to fade away.
even after closing the app completely, close it, delete it, the image is still half visible on the screen, no matter what is open, this app, the springboard, another app. over the next minute or 2 depending on how long it was originally on screen for, the image fades away until nothing can be seen.
when the page comes on screen, the spinning images are hidden, they are behind a rub to reveal layer. rubbing the screens makes the top image disappear revealing these images underneath. i am unsure if that has anything to do with the issue.
the issue happens both on ios 4 and ios 5.
What is "view" who's layer you're installing the animation into? A UIWindow is a subclass of UIView, so you could probably install an animation into the window's layer and screw things up.
My guess is that somehow you are reaching down to the CA layer for the actual screen rather than the layer for your view.
You might want to add a container view inside your view controller's content view, and add your animation to that new view instead of directly to your view controller's content view. (That's assuming you are adding the animation directly to the layer belonging to the view controller's content view.
In Mac OS there is a parameter you use when you create a window to control the "depth" of the window in the window hierarchy. This lets you create floating windows that float above all other application windows, and is how the system does system alerts that float in front of EVERYTHING.
Is there something like that with layers in iOS, and are you pushing your "spinners" view down below your applications layers?
Regards,
Duncan C WareTo
Animated GIF created with Face Dancer, available for free in the app store.
the above code is a generic class method i have created, and i can call that method on any view i wish. generally it would only be called on a UIImageView (either a static image or an image sequence), maybe a uiview containing images, could be a uiview containing a video etc. im 98% of the way through building my own entire magazine platform, similar to the adobe digital publishing suite, but mine is much more versatile and customisable, with many more features.
the above code is a generic class method i have created, and i can call that method on any view i wish. generally it would only be called on a UIImageView (either a static image or an image sequence), maybe a uiview containing images, could be a uiview containing a video etc. im 98% of the way through building my own entire magazine platform, similar to the adobe digital publishing suite, but mine is much more versatile and customisable, with many more features.
doing the apple bug report now. the strange thing is its never done it on my iphone 4 or 3gs. but 100% repeatable on my ipads 1 and 2.
ive recorded a video to show what is happening. normally it takes up to a minute or so for the burn in to happen, but for the purpose of the video i left it sit for a minute to burn in, then changed page back and forth to reset the rub and reveal, so i can show the process minus the minute wait for it to burn in.
thephotographer
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0 • Off Topic Insightful Disagree Dislike Like Awesomethats pretty much what i thought, what i described "should be impossible" as far as im aware, no matter what happens, (as long as u stay within the apple guidelines and use public api's), the app should not be able to affect the rest of the operating system or other apps. when the app is closed it should be finished. am i correct in saying that?
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0 • Off Topic Insightful Disagree Dislike Like AwesomeWhat is "view" who's layer you're installing the animation into? A UIWindow is a subclass of UIView, so you could probably install an animation into the window's layer and screw things up.
My guess is that somehow you are reaching down to the CA layer for the actual screen rather than the layer for your view.
You might want to add a container view inside your view controller's content view, and add your animation to that new view instead of directly to your view controller's content view. (That's assuming you are adding the animation directly to the layer belonging to the view controller's content view.
In Mac OS there is a parameter you use when you create a window to control the "depth" of the window in the window hierarchy. This lets you create floating windows that float above all other application windows, and is how the system does system alerts that float in front of EVERYTHING.
Is there something like that with layers in iOS, and are you pushing your "spinners" view down below your applications layers?
Duncan C
WareTo
Animated GIF created with Face Dancer, available for free in the app store.
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0 • Off Topic Insightful Disagree Dislike Like Awesomein this particular example the view being passed to the method is a UIImageView, and is in the heirachy as follows
window > viewcontroller > view > scrollview > scrollview > view >UIImageView.
i have 2 of these images on the page, png's, they are the spinning wheels on a car.
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0 • Off Topic Insightful Disagree Dislike Like AwesomeDuncan C
WareTo
Animated GIF created with Face Dancer, available for free in the app store.
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0 • Off Topic Insightful Disagree Dislike Like Awesomeive recorded a video to show what is happening. normally it takes up to a minute or so for the burn in to happen, but for the purpose of the video i left it sit for a minute to burn in, then changed page back and forth to reset the rub and reveal, so i can show the process minus the minute wait for it to burn in.
http://clintebbesen.com/download/apple%20bug%20spinning%20image%20stuck%20on%20scren%20after%20closing%20app.MOV
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0 • Off Topic Insightful Disagree Dislike Like Awesome