I am having a problem when using CGAffineTransformMakeTranslation on iOS7. The view I am using the CGAffineTransformMakeTranslation is going to a different position when running iOS7 and iOS8. Why is this and what am I doing wrong?
I have a view that I am calling "hud" that is the length of its parentView and 125.0 tall. I am using Auto Layout and here is a screenshot of my story board so you can see how I have the constraints set up. The container view is a collection view of photos.
I have the "hud" hide right away with a transform downward and when a photo is selected it will slide back up into view.
-(void)showHud:(BOOL)show
{
NSLog(@"Frame Height: %f", hud.frame.size.height);
if (show && !hudSelectionMode)
{
[UIView animateWithDuration:0.5 delay:0 options:0
animations:^{
hud.transform = CGAffineTransformMakeTranslation(0, 0);
hud.alpha = 0.8f;
}
completion:^(BOOL finished){
}
];
}
else if (!show && !hudSelectionMode)
{
[UIView animateWithDuration:0.5 delay:0 options:0
animations:^{
hud.transform = CGAffineTransformMakeTranslation(0, hud.frame.size.height);
hud.alpha = 0.8f; // will be 0.0 when not testing
}
completion:^(BOOL finished){
}
];
}
}
Here is the problem
On iOS8 this works flawlessly the hud is hidden from the start and will slide up when an image is selected:
However when running on iOS7 devices the hud is not where I would expect it to be:
If I comment out all the code in -(void)showHud:(BOOL)show the hud will sit at the bottom of the parentView where I would expect it to on both 7 and 8.
