Problem with setNeedsLayout and layoutSubviews in UIScrollView
Problem with setNeedsLayout and layoutSubviews in UIScrollView
- Subject: Problem with setNeedsLayout and layoutSubviews in UIScrollView
- From: Tales Pinheiro de Andrade <email@hidden>
- Date: Sun, 26 Jun 2011 15:39:18 -0300
Hi.
I have a few custom views of three kind inside a custom UIScrollview. I'm trying to resize these custom views as the device change the orientation.
I added these custom views programatically to the custom UIScrollView. I implemented in the custom UIScrollview the below method
- (void)layoutSubviews {
UIDeviceOrientation currentOrientation = [[UIDevice currentDevice] orientation];
if (UIDeviceOrientationIsLandscape(currentOrientation)) {
for (id view in [self subviews]) {
if ([view isKindOfClass:[ECIndexComponent class]] ||
[view isKindOfClass:[ECListComponent class]] ||
[view isKindOfClass:[ECGraphView class]]) {
CGRect newFrame = [(UIView *)view frame];
newFrame.size.width *= 1.5;
newFrame.size.height *= 1.5;
newFrame.origin.y *= 1.5;
[(UIView *)view setFrame:newFrame];
}
}
}
else {
for (id view in [self subviews]) {
if ([view isKindOfClass:[ECIndexComponent class]] ||
[view isKindOfClass:[ECListComponent class]] ||
[view isKindOfClass:[ECGraphView class]]) {
CGRect newFrame = [(UIView *)view frame];
newFrame.size.width *= 0.666;
newFrame.size.height *= 0.666;
newFrame.origin.y *= 0.666;
[(UIView *)view setFrame:newFrame];
}
}
}
}
And in my view controller shouldAutorotateToInterfaceOrientation method I call setNeedsLayout for the custom scroll view. It's almost there, but now, when I try to scroll, these subviews get redimensioned, even if I did not changed the orientation. It looks like the scrolling is calling layoutSubviews
Is there a way to correct this?
Thank you
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