{"id":4683,"date":"2014-03-30T14:42:09","date_gmt":"2014-03-30T14:42:09","guid":{"rendered":"https:\/\/unknownerror.org\/index.php\/2014\/03\/30\/what-properties-should-i-set-to-nil-in-viewdidunload-collection-of-common-programming-errors\/"},"modified":"2014-03-30T14:42:09","modified_gmt":"2014-03-30T14:42:09","slug":"what-properties-should-i-set-to-nil-in-viewdidunload-collection-of-common-programming-errors","status":"publish","type":"post","link":"https:\/\/unknownerror.org\/index.php\/2014\/03\/30\/what-properties-should-i-set-to-nil-in-viewdidunload-collection-of-common-programming-errors\/","title":{"rendered":"What properties should I set to nil in viewDidUnload?-Collection of common programming errors"},"content":{"rendered":"<p>I don&#8217;t know if I&#8217;m using viewDidUnload properly. Should I release all stuff I declare in my .h file?<\/p>\n<p>Here is how I&#8217;m doing it now:<\/p>\n<pre><code>@property (strong, nonatomic) Readability *wrapper;\n@property (strong, nonatomic) ArticleModel *article;\n@property (strong, nonatomic) Woho *wohoItem;\n@property (strong, nonatomic) FeedItem *item;\n@property (unsafe_unretained, nonatomic) IBOutlet UIScrollView *scrollView;\n@property (strong, nonatomic) NSMutableArray *picturesArray;\n@property (unsafe_unretained, nonatomic) IBOutlet UILabel *headTitleLabel;\n<\/code><\/pre>\n<p>and in viewDidUnload:<\/p>\n<pre><code>- (void)viewDidUnload\n{\n    [self setHeadTitleLabel:nil];\n    [self setScrollView:nil];\n    self.picturesArray = nil;\n    self.item = nil;\n    self.article = nil;\n    self.wohoItem = nil;\n    self.wrapper = nil;\n}\n<\/code><\/pre>\n<p>Is this the right thing to do?<\/p>\n<p>Probably not, because my app crash on every memory warning.<\/p>\n<p>Thanks!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I don&#8217;t know if I&#8217;m using viewDidUnload properly. Should I release all stuff I declare in my .h file? Here is how I&#8217;m doing it now: @property (strong, nonatomic) Readability *wrapper; @property (strong, nonatomic) ArticleModel *article; @property (strong, nonatomic) Woho *wohoItem; @property (strong, nonatomic) FeedItem *item; @property (unsafe_unretained, nonatomic) IBOutlet UIScrollView *scrollView; @property (strong, nonatomic) [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-4683","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/4683","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/comments?post=4683"}],"version-history":[{"count":0,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/4683\/revisions"}],"wp:attachment":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/media?parent=4683"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/categories?post=4683"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/tags?post=4683"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}