{"id":6309,"date":"2022-09-02T16:11:36","date_gmt":"2022-09-02T10:41:36","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-program-crashing-after-trying-to-read-a-nsstring\/"},"modified":"2022-09-02T16:11:36","modified_gmt":"2022-09-02T10:41:36","slug":"solved-program-crashing-after-trying-to-read-a-nsstring","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-program-crashing-after-trying-to-read-a-nsstring\/","title":{"rendered":"[Solved] Program crashing after trying to read a NSString"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-16385435\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"16385435\" data-parentid=\"16385106\" data-score=\"3\" data-position-on-page=\"1\" data-highest-scored=\"1\" data-question-has-accepted-highest-score=\"1\" itemprop=\"acceptedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\">\n<div class=\"post-layout\">\n<div class=\"votecell post-layout--left\"><\/div>\n<div class=\"answercell post-layout--right\">\n<div class=\"s-prose js-post-body\" itemprop=\"text\">\n<p>The problem is probably that that <code>_guideDescription<\/code> string already is deallocated when you try to access it in <code>-saveIntoExisted<\/code>. You are now doing <\/p>\n<pre><code>_guideDescription = [[NSString alloc] initWithString:[[notification userInfo] valueForKey:@\"selected\"]];\n<\/code><\/pre>\n<p>and that works, but I would recommend:<\/p>\n<pre><code>[_guideDescription retain];\n<\/code><\/pre>\n<p>That makes sure the system doesn&#8217;t deallocate the string.<\/p>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\"><\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved Program crashing after trying to read a NSString <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] The problem is probably that that _guideDescription string already is deallocated when you try to access it in -saveIntoExisted. You are now doing _guideDescription = [[NSString alloc] initWithString:[[notification userInfo] valueForKey:@&#8221;selected&#8221;]]; and that works, but I would recommend: [_guideDescription retain]; That makes sure the system doesn&#8217;t deallocate the string. [ad_2] solved Program crashing after trying &#8230; <a title=\"[Solved] Program crashing after trying to read a NSString\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-program-crashing-after-trying-to-read-a-nsstring\/\" aria-label=\"More on [Solved] Program crashing after trying to read a NSString\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[1085,471,470],"class_list":["post-6309","post","type-post","status-publish","format-standard","hentry","category-solved","tag-cocoa-touch","tag-ios","tag-objective-c"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[Solved] Program crashing after trying to read a NSString - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-program-crashing-after-trying-to-read-a-nsstring\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Program crashing after trying to read a NSString - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] The problem is probably that that _guideDescription string already is deallocated when you try to access it in -saveIntoExisted. You are now doing _guideDescription = [[NSString alloc] initWithString:[[notification userInfo] valueForKey:@&quot;selected&quot;]]; and that works, but I would recommend: [_guideDescription retain]; That makes sure the system doesn&#8217;t deallocate the string. [ad_2] solved Program crashing after trying ... 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You are now doing _guideDescription = [[NSString alloc] initWithString:[[notification userInfo] valueForKey:@\"selected\"]]; and that works, but I would recommend: [_guideDescription retain]; That makes sure the system doesn&#8217;t deallocate the string. [ad_2] solved Program crashing after trying ... 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