{"id":129765,"date":"2024-03-25T12:01:11","date_gmt":"2024-03-25T03:01:11","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/%e5%ae%89%e5%85%a8%e3%81%abkvo%e3%82%92%e4%bd%bf%e7%94%a8%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95\/"},"modified":"2024-03-28T00:00:10","modified_gmt":"2024-03-27T15:00:10","slug":"%e5%ae%89%e5%85%a8%e3%81%abkvo%e3%82%92%e4%bd%bf%e7%94%a8%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/%e5%ae%89%e5%85%a8%e3%81%abkvo%e3%82%92%e4%bd%bf%e7%94%a8%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95\/","title":{"rendered":"\u5b89\u5168\u306bKVO\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"

\u5b89\u5168\u306bKVO\u3092\u4f7f\u7528\u3059\u308b\u305f\u3081\u306e\u63d0\u6848\u3092\u4ee5\u4e0b\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n

    \n
  1. \u5faa\u74b0\u53c2\u7167\u3092\u907f\u3051\u308b\uff1aKVO\u306e\u30aa\u30d6\u30b6\u30fc\u30d0\u3092\u767b\u9332\u3059\u308b\u5834\u5408\u306f\u3001\u30aa\u30d6\u30b6\u30fc\u30d0\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u76e3\u8996\u4e2d\u306b\u89e3\u653e\u3055\u308c\u306a\u3044\u3088\u3046\u306b\u3001\u79fb\u884c\u3059\u308b\u30aa\u30d6\u30b6\u30fc\u30d0\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u3053\u306e\u554f\u984c\u306f\u3001\u5f31\u3044\u53c2\u7167\u3092\u4f7f\u7528\u3057\u3066\u8efd\u6e1b\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n
    weak<\/span> var<\/span> observer: NSObject<\/span>?\r\n<\/code><\/pre>\n
      \n
    1. deinit<\/li>\n<\/ol>\n
      deinit<\/span> {\r\nobject.removeObserver(observer, forKeyPath: keyPath)\r\n}\r\n<\/code><\/pre>\n
        \n
      1. observeValue(forKeyPath:of:change:context:)<\/li>\n<\/ol>\n
        override<\/span> func<\/span> observeValue<\/span>(forKeyPath<\/span> keyPath<\/span>: String<\/span>?, of<\/span> object<\/span>: Any<\/span>?<\/span>, change<\/span>: [NSKeyValueChangeKey<\/span> : Any<\/span>]?<\/span>, context<\/span>: UnsafeMutableRawPointer<\/span>?) {\r\n\/\/ \u5904\u7406\u89c2\u5bdf\u5230\u7684\u53d8\u5316<\/span>\r\n}\r\n<\/code><\/pre>\n
          \n
        1. \u767b\u9332\u30a6\u30a9\u30c3\u30c1\u6642\u306b\u9069\u5207\u306a\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30a6\u30a9\u30c3\u30c1\u306e\u7d30\u90e8\u3092\u5b9a\u7fa9\u3067\u304d\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u30a6\u30a9\u30c3\u30c1\u306e\u512a\u5148\u5ea6\u3001\u521d\u671f\u5024\u3092\u89b3\u5bdf\u3059\u308b\u304b\u3069\u3046\u306a\u3069\u3092\u6307\u5b9a\u3067\u304d\u307e\u3059.<\/li>\n<\/ol>\n
          object.addObserver(observer, forKeyPath: keyPath, options: [.new, .old], context: nil<\/span>)\r\n<\/code><\/pre>\n
            \n
          1. KVO\u306f\u3001Objective-C\u4ee5\u5916\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3001\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30d7\u30ed\u30d1\u30c6\u30a3\u306a\u3069\u3001\u7279\u5b9a\u306e\u30b1\u30fc\u30b9\u3067\u306f\u9069\u5207\u3067\u306a\u3044\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002KVO\u3092\u4f7f\u7528\u3059\u308b\u524d\u306b\u3001\u305d\u306e\u9069\u7528\u7bc4\u56f2\u3068\u5236\u9650\u3092\u7406\u89e3\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<\/ol>\n
            KVO\u306f\u5f37\u529b\u306a\u4ed5\u7d44\u307f\u3067\u306f\u3042\u308a\u307e\u3059\u304c\u3001\u4f7f\u7528\u3059\u308b\u969b\u306f\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002KVO\u3092\u6b63\u3057\u304f\u4f7f\u308f\u306a\u3044\u3068\u3001\u4e88\u671f\u3057\u306a\u3044\u30a8\u30e9\u30fc\u3084\u6319\u52d5\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u95a2\u9023\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3092\u3088\u304f\u8aad\u307f\u3001\u4e0a\u8a18\u3067\u7d39\u4ecb\u3057\u305f\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306b\u5f93\u3063\u3066\u3001\u5b89\u5168\u306bKVO\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
            \u5b89\u5168\u306bKVO\u3092\u4f7f\u7528\u3059\u308b\u305f\u3081\u306e\u63d0\u6848\u3092\u4ee5\u4e0b\u306b\u793a\u3057\u307e\u3059\u3002 \u5faa\u74b0\u53c2\u7167\u3092\u907f\u3051\u308b\uff1aKVO\u306e\u30aa\u30d6\u30b6\u30fc\u30d0\u3092\u767b\u9332\u3059\u308b\u5834\u5408\u306f\u3001\u30aa\u30d6\u30b6\u30fc\u30d0\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u76e3\u8996\u4e2d\u306b\u89e3\u653e\u3055\u308c\u306a\u3044\u3088\u3046\u306b\u3001\u79fb\u884c\u3059\u308b\u30aa\u30d6\u30b6\u30fc\u30d0\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u3053\u306e\u554f\u984c\u306f\u3001\u5f31\u3044\u53c2 […]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-129765","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n\u5b89\u5168\u306bKVO\u3092\u4f7f\u7528\u3059\u308b\u65b9\u6cd5 - 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