{"id":16406,"date":"2025-03-27T16:30:14","date_gmt":"2025-03-27T13:30:14","guid":{"rendered":"https:\/\/fatihsoysal.com\/blog\/flutterda-changenotifier-ile-hesaplanmis-ozellikler\/"},"modified":"2025-03-27T16:30:14","modified_gmt":"2025-03-27T13:30:14","slug":"flutterda-changenotifier-ile-hesaplanmis-ozellikler","status":"publish","type":"post","link":"https:\/\/fatihsoysal.com\/blog\/flutterda-changenotifier-ile-hesaplanmis-ozellikler\/","title":{"rendered":"Flutter&#8217;da ChangeNotifier ile Hesaplanm\u0131\u015f \u00d6zellikler"},"content":{"rendered":"<p><body><\/p>\n<p>Flutter&#8217;da ChangeNotifier ile Hesaplanm\u0131\u015f \u00d6zellikler<\/p>\n<p>Flutter uygulamalar\u0131nda veri y\u00f6netimi olduk\u00e7a \u00f6nemlidir.  Veri g\u00fcncellemelerini etkin bir \u015fekilde y\u00f6netmek ve UI&#8217;\u0131 g\u00fcncel tutmak i\u00e7in <code>ChangeNotifier<\/code> s\u0131k\u00e7a kullan\u0131l\u0131r. Ancak, baz\u0131 durumlarda, veri kaynaklar\u0131ndan t\u00fcretilen ek bilgiler hesaplamak gerekebilir.  Bu noktada hesaplanm\u0131\u015f \u00f6zellikler devreye girer.  Bu makalede, Flutter&#8217;da <code>ChangeNotifier<\/code> ile hesaplanm\u0131\u015f \u00f6zellikleri nas\u0131l etkili bir \u015fekilde kullanaca\u011f\u0131n\u0131z\u0131 detayl\u0131 olarak ele alaca\u011f\u0131z.  Hesaplanm\u0131\u015f \u00f6zellikler, gereksiz yeniden hesaplamalar\u0131 \u00f6nleyerek uygulama performans\u0131n\u0131 art\u0131r\u0131r ve kodunuzu daha temiz ve okunabilir hale getirir.<\/p>\n<h2>Hesaplanm\u0131\u015f \u00d6zellikler Nedir?<\/h2>\n<p>Hesaplanm\u0131\u015f \u00f6zellikler, di\u011fer \u00f6zelliklerden t\u00fcretilen ve otomatik olarak g\u00fcncellenen de\u011ferlerdir.  \u00d6rne\u011fin, bir \u00fcr\u00fcn\u00fcn fiyat\u0131 ve vergisi bilindi\u011finde, toplam fiyat\u0131 hesaplamak i\u00e7in bir hesaplanm\u0131\u015f \u00f6zellik kullanabiliriz.  Bu sayede, her fiyat veya vergi de\u011fi\u015fikli\u011finde toplam fiyat\u0131 manuel olarak hesaplamam\u0131za gerek kalmaz.  <code>ChangeNotifier<\/code> ile birle\u015ftirildi\u011finde, bu hesaplamalar arka planda otomatik olarak ger\u00e7ekle\u015fir ve UI&#8217;\u0131 g\u00fcncel tutar.<\/p>\n<h2>ChangeNotifier ile Hesaplanm\u0131\u015f \u00d6zellik Uygulamas\u0131<\/h2>\n<p>A\u015fa\u011f\u0131daki \u00f6rnekte, bir al\u0131\u015fveri\u015f sepeti uygulamas\u0131 i\u00e7in <code>ChangeNotifier<\/code> kullanarak hesaplanm\u0131\u015f bir \u00f6zellik olan toplam fiyat\u0131 nas\u0131l hesaplayabilece\u011fimizi g\u00f6sterece\u011fiz:<\/p>\n<pre><code class=\"language-dart\">\nimport 'package:flutter\/foundation.dart';\n\nclass Sepet with ChangeNotifier {\n  List<double> urunFiyatlari = [];\n\n  double get toplamFiyat {\n    return urunFiyatlari.reduce((a, b) => a + b);\n  }\n\n  void urunEkle(double fiyat) {\n    urunFiyatlari.add(fiyat);\n    notifyListeners();\n  }\n\n  void urunCikar(double fiyat) {\n    urunFiyatlari.remove(fiyat);\n    notifyListeners();\n  }\n}\n<\/code><\/pre>\n<p>Bu \u00f6rnekte, <code>toplamFiyat<\/code>, <code>urunFiyatlari<\/code> listesinden otomatik olarak hesaplanan bir hesaplanm\u0131\u015f \u00f6zelliktir.  <code>urunEkle<\/code> ve <code>urunCikar<\/code> fonksiyonlar\u0131, listeyi de\u011fi\u015ftirdikten sonra <code>notifyListeners()<\/code> fonksiyonunu \u00e7a\u011f\u0131rarak UI&#8217;\u0131n g\u00fcncellenmesini sa\u011flar.  Bu sayede, toplam fiyat her de\u011fi\u015fiklikte otomatik olarak g\u00fcncellenir.<\/p>\n<h2>Performans Geli\u015ftirme ve Kod Temizli\u011fi<\/h2>\n<p>Hesaplanm\u0131\u015f \u00f6zellikler, \u00f6zellikle karma\u015f\u0131k hesaplamalar i\u00e7eren uygulamalarda performans\u0131 \u00f6nemli \u00f6l\u00e7\u00fcde art\u0131r\u0131r.  Her de\u011fi\u015fiklikte t\u00fcm hesaplamalar\u0131 tekrarlamak yerine, sadece gerekli olan hesaplamalar yap\u0131l\u0131r.  Ayr\u0131ca, kodun daha okunabilir ve bak\u0131m\u0131 kolay hale gelmesine yard\u0131mc\u0131 olur.  Karma\u015f\u0131k mant\u0131k, hesaplanm\u0131\u015f \u00f6zelliklerin i\u00e7ine gizlenerek ana kodun daha temiz ve anla\u015f\u0131l\u0131r olmas\u0131n\u0131 sa\u011flar.  Bu da, uzun vadede geli\u015ftirme s\u00fcrecini h\u0131zland\u0131r\u0131r.<\/p>\n<h2>Sonu\u00e7<\/h2>\n<p>Flutter&#8217;da <code>ChangeNotifier<\/code> ile hesaplanm\u0131\u015f \u00f6zellikleri kullanmak, uygulamalar\u0131n\u0131z\u0131n performans\u0131n\u0131 art\u0131rman\u0131n ve kod kalitesini iyile\u015ftirmenin etkili bir yoludur.  Bu makalede ele ald\u0131\u011f\u0131m\u0131z \u00f6rnek ve a\u00e7\u0131klamalar, bu konuda size iyi bir ba\u015flang\u0131\u00e7 noktas\u0131 sa\u011flayacakt\u0131r.  Daha fazla bilgi ve Flutter geli\u015ftirme ipu\u00e7lar\u0131 i\u00e7in <a href=\"https:\/\/fatihsoysal.com\">fatihsoysal.com<\/a> sitesini ziyaret edebilirsiniz.  Ayr\u0131ca,  <a href=\"https:\/\/dev.to\/vayuz_insights\/leveraging-computed-properties-with-changenotifier-in-flutter-18gc\">burada<\/a>  ingilizce kaynak koduna g\u00f6z atabilirsiniz.  Umar\u0131m bu makale, Flutter projelerinizde hesaplanm\u0131\u015f \u00f6zellikleri daha etkili bir \u015fekilde kullanman\u0131za yard\u0131mc\u0131 olmu\u015ftur.<\/p>\n<p>#Etiketler: Flutter, ChangeNotifier, Hesaplanm\u0131\u015f \u00d6zellikler, Computed Properties, Performans, Kod Temizli\u011fi, \u00d6rnekler, Tutorial, E\u011fitim, Dart,  Mobil Geli\u015ftirme<br \/>\n<\/body><br \/>\n<\/html><\/p>\n","protected":false},"excerpt":{"rendered":"Flutter&#8217;da ChangeNotifier ile Hesaplanm\u0131\u015f \u00d6zellikler Flutter uygulamalar\u0131nda veri y\u00f6netimi olduk\u00e7a \u00f6nemlidir. Veri g\u00fcncellemelerini etkin bir \u015fekilde y\u00f6netmek ve&hellip;","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"csco_page_header_type":"","csco_page_load_nextpost":"","csco_page_subscribe_form":"","csco_page_contact_form":"","footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-16406","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-genel","7":"cs-entry","8":"cs-video-wrap"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v20.5 (Yoast SEO v25.3.1) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Flutter&#039;da ChangeNotifier ile Hesaplanm\u0131\u015f \u00d6zellikler<\/title>\n<meta name=\"description\" content=\"Flutter uygulamalar\u0131nda veri y\u00f6netimi olduk\u00e7a \u00f6nemlidir. Veri g\u00fcncellemelerini etkin bir \u015fekilde y\u00f6netmek ve UI&#039;\u0131 g\u00fcncel tutmak i\u00e7in ChangeNotifier s\u0131k\u00e7a kullan\u0131l\u0131r. Ancak, baz\u0131 durumlarda, veri kaynaklar\u0131ndan t\u00fcretilen ek bilgiler hesaplamak gerekebilir. Bu noktada hesaplanm\u0131\u015f \u00f6zellikler devreye girer. Bu makalede, Flutter&#039;da ChangeNotifier ile hesaplanm\u0131\u015f \u00f6zellikleri nas\u0131l etkili bir \u015fekilde kullanaca\u011f\u0131n\u0131z\u0131 detayl\u0131 olarak ele alaca\u011f\u0131z. Hesaplanm\u0131\u015f \u00f6zellikler, gereksiz yeniden hesaplamalar\u0131 \u00f6nleyerek uygulama performans\u0131n\u0131 art\u0131r\u0131r ve kodunuzu daha temiz ve okunabilir hale getirir.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/fatihsoysal.com\/blog\/flutterda-changenotifier-ile-hesaplanmis-ozellikler\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Flutter&#039;da ChangeNotifier ile Hesaplanm\u0131\u015f \u00d6zellikler\" \/>\n<meta property=\"og:description\" content=\"Flutter uygulamalar\u0131nda veri y\u00f6netimi olduk\u00e7a \u00f6nemlidir. Veri g\u00fcncellemelerini etkin bir \u015fekilde y\u00f6netmek ve UI&#039;\u0131 g\u00fcncel tutmak i\u00e7in ChangeNotifier s\u0131k\u00e7a kullan\u0131l\u0131r. Ancak, baz\u0131 durumlarda, veri kaynaklar\u0131ndan t\u00fcretilen ek bilgiler hesaplamak gerekebilir. Bu noktada hesaplanm\u0131\u015f \u00f6zellikler devreye girer. Bu makalede, Flutter&#039;da ChangeNotifier ile hesaplanm\u0131\u015f \u00f6zellikleri nas\u0131l etkili bir \u015fekilde kullanaca\u011f\u0131n\u0131z\u0131 detayl\u0131 olarak ele alaca\u011f\u0131z. Hesaplanm\u0131\u015f \u00f6zellikler, gereksiz yeniden hesaplamalar\u0131 \u00f6nleyerek uygulama performans\u0131n\u0131 art\u0131r\u0131r ve kodunuzu daha temiz ve okunabilir hale getirir.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/fatihsoysal.com\/blog\/flutterda-changenotifier-ile-hesaplanmis-ozellikler\/\" \/>\n<meta property=\"og:site_name\" content=\"Kodlar\u0131n Gizemli D\u00fcnyas\u0131\" \/>\n<meta property=\"article:published_time\" content=\"2025-03-27T13:30:14+00:00\" \/>\n<meta name=\"author\" content=\"Fatih Soysal\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Yazan:\" \/>\n\t<meta name=\"twitter:data1\" content=\"Fatih Soysal\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tahmini okuma s\u00fcresi\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 dakika\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/flutterda-changenotifier-ile-hesaplanmis-ozellikler\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/flutterda-changenotifier-ile-hesaplanmis-ozellikler\/\"},\"author\":{\"name\":\"Fatih Soysal\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1\"},\"headline\":\"Flutter&#8217;da ChangeNotifier ile Hesaplanm\u0131\u015f \u00d6zellikler\",\"datePublished\":\"2025-03-27T13:30:14+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/flutterda-changenotifier-ile-hesaplanmis-ozellikler\/\"},\"wordCount\":429,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1\"},\"inLanguage\":\"tr\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/fatihsoysal.com\/blog\/flutterda-changenotifier-ile-hesaplanmis-ozellikler\/#respond\"]}],\"copyrightYear\":\"2025\",\"copyrightHolder\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#organization\"}},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/flutterda-changenotifier-ile-hesaplanmis-ozellikler\/\",\"url\":\"https:\/\/fatihsoysal.com\/blog\/flutterda-changenotifier-ile-hesaplanmis-ozellikler\/\",\"name\":\"Flutter'da ChangeNotifier ile Hesaplanm\u0131\u015f \u00d6zellikler\",\"isPartOf\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#website\"},\"datePublished\":\"2025-03-27T13:30:14+00:00\",\"description\":\"Flutter uygulamalar\u0131nda veri y\u00f6netimi olduk\u00e7a \u00f6nemlidir. 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Bu noktada hesaplanm\u0131\u015f \u00f6zellikler devreye girer. Bu makalede, Flutter'da ChangeNotifier ile hesaplanm\u0131\u015f \u00f6zellikleri nas\u0131l etkili bir \u015fekilde kullanaca\u011f\u0131n\u0131z\u0131 detayl\u0131 olarak ele alaca\u011f\u0131z. 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Veri g\u00fcncellemelerini etkin bir \u015fekilde y\u00f6netmek ve UI'\u0131 g\u00fcncel tutmak i\u00e7in ChangeNotifier s\u0131k\u00e7a kullan\u0131l\u0131r. Ancak, baz\u0131 durumlarda, veri kaynaklar\u0131ndan t\u00fcretilen ek bilgiler hesaplamak gerekebilir. Bu noktada hesaplanm\u0131\u015f \u00f6zellikler devreye girer. Bu makalede, Flutter'da ChangeNotifier ile hesaplanm\u0131\u015f \u00f6zellikleri nas\u0131l etkili bir \u015fekilde kullanaca\u011f\u0131n\u0131z\u0131 detayl\u0131 olarak ele alaca\u011f\u0131z. 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