StackOverflow2013

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plurals

POCALayer, subLayer alpha overriding
primarykey
Id
15865500
data
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0
AnswerCount
1
ClosedDate
CommentCount
1
CommunityOwnedDate
CreationDate
2013-04-07T17:33:34.723
FavoriteCount
1
LastActivityDate
2017-01-18T01:58:13.963
LastEditDate
2017-01-18T01:58:13.963
LastEditorUserId
1337726
OwnerUserId
2254860
ParentId
0
PostTypeId
1
Score
1
ViewCount
4117
LastEditorDisplayName
text
Body
I have a CALayer ( superlayer ) with 0.3 opacity property. The superlayer contains another CALayer(sublayer). Although sublayer does not have a opacity property superLayer's opacity affects sublayer's appearance. Is there a method that I can override superLayer'a opacity property. SuperLayer <pre><code>@implementation SuperView - (id)initWithFrame:(CGRect)frame { self = [super initWithFrame:frame]; if (self) { [self setOpaque:NO]; [self.layer setOpaque:NO]; } return self; } -(void)drawRect:(CGRect)rect { CALayer* superLaer=self.layer; superLaer.backgroundColor = [UIColor blackColor].CGColor; superLaer.shadowOffset = CGSizeMake(0, 3); superLaer.shadowRadius = 5.0; superLaer.shadowColor = [UIColor blackColor].CGColor; superLaer.shadowOpacity = 0.6; superLaer.frame = CGRectMake(10, 10, 300,300); superLaer.borderColor = [UIColor blackColor].CGColor; superLaer.borderWidth = 2.0; superLaer.cornerRadius = 10.0; superLaer.cornerRadius = 10.0; superLaer.masksToBounds=YES; superLaer.opacity = 0.1; } @end </code></pre> SubLayer <pre><code>@implementation SubView - (id)initWithFrame:(CGRect)frame { self = [super initWithFrame:frame]; if (self) { [self setOpaque:NO]; [self.layer setOpaque:NO]; } return self; } -(void)drawRect:(CGRect)rect { CALayer* superLaer=self.layer; superLaer.backgroundColor = [UIColor redColor].CGColor; superLaer.shadowOffset = CGSizeMake(0, 3); superLaer.shadowRadius = 5.0; superLaer.shadowColor = [UIColor blackColor].CGColor; superLaer.shadowOpacity = 0.6; superLaer.frame = CGRectMake(100, 100, 100,100); superLaer.borderColor = [UIColor blackColor].CGColor; superLaer.borderWidth = 2.0; superLaer.cornerRadius = 10.0; superLaer.cornerRadius = 10.0; superLaer.masksToBounds=YES; } @end </code></pre> I have added the subView to the superView in Viewcontroller.
Tags
<ios><calayer><opacity><alpha><quartz-2d>
Title
CALayer, subLayer alpha overriding
singulars
PostAcceptedAnswerId
1. This table or related slice is empty.
PostParentId
1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. USNolski
UserOwnerUserId
1. USuser2254860
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1. This table or related slice is empty.
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
VotesPostIdCreationDate
1. This table or related slice is empty.
CommentsPostId
1. This table or related slice is empty.

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