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plurals

POUIImage with border. Invalid Context 0x0
primarykey
Id
12145977
data
AcceptedAnswerId
12146515
AnswerCount
2
ClosedDate
CommentCount
0
CommunityOwnedDate
CreationDate
2012-08-27T16:37:13.330
FavoriteCount
1
LastActivityDate
2012-08-27T20:24:15.490
LastEditDate
2012-08-27T17:45:24.060
LastEditorUserId
764638
OwnerUserId
764638
ParentId
0
PostTypeId
1
Score
0
ViewCount
1531
LastEditorDisplayName
text
Body
I'm fetching an image and saving it to temporary directory in a background thread. Before saving, I want to add a little white border to this UIImage. I'm doing this: <pre><code> - (UIImage *)imageWithBorder:(UIImage *)image { CGSize newSize = CGSizeMake(image.size.width, image.size.height); CGRect rect = CGRectMake(0.0, 0.0, image.size.width, image.size.height); UIGraphicsBeginImageContextWithOptions(newSize, NO, image.scale); { CGContextRef context = UIGraphicsGetCurrentContext(); CGContextBeginTransparencyLayer (context, NULL); //Draw [image drawInRect:rect blendMode:kCGBlendModeNormal alpha:1.0]; CGContextSetRGBStrokeColor(context, 1.0, 1.0, 1.0, 1.0); CGContextStrokeRectWithWidth(context, rect, 10); CGContextEndTransparencyLayer(context); } UIImage *result = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); return result; } </code></pre> Everything is okay, after loading that image from a temporary directory I can see border on an image, but in console I'm getting <code>invalid context 0x0</code> when the code below implements. What's wrong here? <hr> Update 01 <pre><code>- (UIImage *)imageWithBorder:(UIImage *)image { CGSize newSize = CGSizeMake(image.size.width, image.size.height); CGRect rect = CGRectMake(0.0, 0.0, image.size.width, image.size.height); UIGraphicsBeginImageContextWithOptions(newSize, NO, image.scale); { CGContextRef context = UIGraphicsGetCurrentContext(); CGContextDrawImage (context, rect, [image CGImage]); CGContextSetRGBStrokeColor(context, 1.0, 1.0, 1.0, 1.0); CGContextStrokeRectWithWidth(context, rect, 10); } UIImage *result = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); return result; } </code></pre>
Tags
<iphone><ios><uiimage><core-graphics><cgcontext>
Title
UIImage with border. Invalid Context 0x0
singulars
PostAcceptedAnswerId
1. PO
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 PostTypePostTypeId
 PTAnswer
PostParentId
1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. USRandex
UserOwnerUserId
1. USRandex
plurals
PostLinksPostIdRelatedPostId
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
2. PO
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 PostTypePostTypeId
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VotesPostIdCreationDate
1. VO
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 PostPostId
 POUIImage with border. Invalid Context 0x0
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CommentsPostId
1. This table or related slice is empty.

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