StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

POObjectiveC - Releasing objects added as parameters
primarykey
Id
4673519
data
AcceptedAnswerId
4673680
AnswerCount
4
ClosedDate
CommentCount
0
CommunityOwnedDate
CreationDate
2011-01-12T20:09:56.190
FavoriteCount
0
LastActivityDate
2011-01-17T20:46:31.903
LastEditDate
LastEditorUserId
0
OwnerUserId
569507
ParentId
0
PostTypeId
1
Score
0
ViewCount
353
LastEditorDisplayName
text
Body
Ok, here goes. Being a Java developer I'm still struggling with the memory management in ObjectiveC. I have all the basics covered, but once in a while I encounter a challenge. What I want to do is something which in Java would look like this: <pre><code>MyObject myObject = new MyObject(new MyParameterObject()); </code></pre> The constructor of <code>MyObject</code> class takes a parameter of type <code>MyParameterObject</code> which I initiate on-the-fly. In ObjectiveC I tried to do this using following code: <pre><code>MyObject *myObject = [[MyObject alloc] init:[[MyParameterObject alloc] init]]; </code></pre> However, running the Build and Analyze tool this gives me a "Potential leak of an object" warning for the <code>MyParameter</code> object which indeed occurs when I test it using Instruments. I do understand why this happens since I am taking ownership of the object with the <code>alloc</code> method and not relinquishing it, I just don't know the correct way of doing it. I tried using <pre><code>MyObject *myObject = [[MyObject alloc] init:[[[MyParameterObject alloc] init] autorelease]]; </code></pre> but then the Analyze tool told me that "Object sent -autorelease too many times". I could solve the issue by modifying the <code>init</code> method of <code>MyParameterObject</code> to say <code>return [self autorelease];</code> in stead of just <code>return self;</code>. Analyze still warnes about a potential leak, but it doesn't actually occur. However I believe that this approach violates the convention for managing memory in ObjectiveC and I really want to do it the right way. Thanx in advance.
Tags
<iphone><objective-c><memory-leaks><memory-management>
Title
ObjectiveC - Releasing objects added as parameters
singulars
PostAcceptedAnswerId
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
PostParentId
1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. This table or related slice is empty.
UserOwnerUserId
1. USpajevic
plurals
PostLinksPostIdRelatedPostId
1. PL
 singulars
 LinkTypeLinkTypeId
 LTLinked
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
 singulars
 PostTypePostTypeId
 PTAnswer
3. PO
 singulars
 PostTypePostTypeId
 PTAnswer
VotesPostIdCreationDate
1. This table or related slice is empty.
CommentsPostId
1. This table or related slice is empty.

Querying!

Guidance

A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.