{"id":1851,"date":"2018-05-10T23:14:17","date_gmt":"2018-05-10T14:14:17","guid":{"rendered":"http:\/\/androiphone.uvs.jp\/?p=1851"},"modified":"2019-11-18T17:37:39","modified_gmt":"2019-11-18T08:37:39","slug":"androidkotlin-eventlistener%e3%82%92%e7%b6%99%e6%89%bf%e3%81%97%e3%81%9finterface%e3%81%ae%e3%82%a4%e3%83%b3%e3%82%b9%e3%82%bf%e3%83%b3%e3%82%b9%e5%8c%96%e3%81%a7does-not-have-constructors","status":"publish","type":"post","link":"https:\/\/androiphone.uvs.jp\/?p=1851","title":{"rendered":"[Android][Kotlin] EventListener\u3092\u7d99\u627f\u3057\u305fInterface\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3067does not have constructors\u3068\u8a00\u308f\u308c\u308b"},"content":{"rendered":"

Google\u306e\u516c\u5f0f\u8a00\u8a9e\u304cJava\u304b\u3089Kotlin\u306b\u5909\u66f4\u3055\u308c\u3066\u4e45\u3057\u3044\u3002\u4eca\u307e\u3067Java\u3067\u884c\u3053\u3046\u304b\u306a\u3068\u601d\u3063\u3066\u305f\u3051\u3069\u3001objective-c\u304b\u3089swift\u3078\u3001java\u304b\u3089Kotlin\u3078\u306a\u3093\u3066\u3001\u4e16\u306e\u4e2d\u306e\u6d41\u308c\u3092\u898b\u3066\u3044\u308b\u3068\u3001\u4e92\u63db\u6027\u304c\u4fdd\u305f\u308c\u3066\u3044\u308b\u3068\u306f\u8a00\u3048\u3001\u53e4\u3044\u8a00\u8a9e\u3092\u4f7f\u3063\u3066\u3044\u308b\u3068\u60c5\u5831\u304c\u306a\u304f\u306a\u308a\u3001\u8001\u5bb3\u6271\u3044\u3055\u308c\u304b\u306d\u306a\u3044\u306e\u3067\u3001\u4eca\u5e74\u5ea6\u306f\u30c1\u30e7\u30c3\u30c8\u305a\u3064\u3067\u3082\u5909\u3048\u3066\u884c\u3053\u3046\u3068\u5fc3\u306b\u8a93\u3063\u305f(\u9045\u3059\u304e\u7b11)<\/p>\n

\u307e\u305a\u3001\u52c9\u5f37\u304c\u3066\u3089\u3001\u4eca\u307e\u3067\u306e\u7c21\u5358\u306ajava\u3067\u66f8\u3044\u3066\u3044\u305f\u30af\u30e9\u30b9\u3092Kotlin\u3067\u66f8\u3044\u3066\u3044\u3053\u3046\u3068\u601d\u3063\u3066\u8e93\u3044\u305f\u3053\u3068\u3092\u8a18\u9332\u3057\u3066\u3044\u304f\u3002\u6587\u6cd5\u304c\u3089\u307f\u306f\u30cd\u30c3\u30c8\u3067\u63a2\u305b\u3070\u5927\u4f53\u308f\u304b\u308b\u3057\u3001null\u30bb\u30fc\u30d5\u306a\u8a00\u8a9e\u3068\u3044\u3046\u3053\u3068\u3082\u7406\u89e3\u3067\u304d\u308b\u3002\u6700\u521d\u306b\u8e93\u3044\u305f\u306e\u306fEventListener\u3092\u7d99\u627f\u3057\u305f\u72ec\u81ea\u306eInterface\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3060\u3063\u305f\u3002\u3064\u307e\u308a\u306f\u533f\u540d\u30af\u30e9\u30b9\u306e\u66f8\u304d\u65b9\u3067\u8e93\u3044\u305f\u3002<\/p>\n

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<\/div><\/td>
interface<\/span> CheckQuesDBListener :<\/span> EventListener<\/span><\/a>{<\/span>
\nfun<\/span> checkOK(<\/span>msg :<\/span> String<\/span><\/a>)<\/span>
\nfun<\/span> checkError(<\/span>msg :<\/span> String<\/span><\/a>)<\/span>
\n}<\/span><\/div><\/td><\/tr><\/tbody><\/table><\/div>\n

\u4e0a\u306e\u3088\u3046\u306a\u30ea\u30b9\u30ca\u30fc\u3092\u5b9a\u7fa9\u3057\u3066\u3001\u533f\u540d\u30af\u30e9\u30b9\u3092\u66f8\u304f\u306b\u306f<\/p>\n

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<\/div><\/td>
val<\/span> lis =<\/span> object<\/span> :<\/span> CopyDBListener{<\/span>
\noverride<\/span> fun<\/span> copyStart(<\/span>)<\/span>{<\/span>
\n\/\/println("\u30b3\u30d4\u30fc\u958b\u59cb")<\/span>
\n}<\/span>
\n
\noverride<\/span> fun<\/span> copyFin(<\/span>)<\/span>{<\/span>
\n\/\/println("\u30b3\u30d4\u30fc\u7d42\u4e86")<\/span>
\n}<\/span>
\n
\noverride<\/span> fun<\/span> copyError(<\/span>msg:<\/span> String<\/span><\/a>)<\/span> {<\/span>
\n\/\/println("\u30b3\u30d4\u30fc\u30a8\u30e9\u30fc")<\/span>
\n}<\/span>
\n
\n}<\/span><\/div><\/td><\/tr><\/tbody><\/table><\/div>\n

\u306e\u3088\u3046\u306b\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5316\u3057\u3066\u3001lis\u3092\u6e21\u3057\u3066\u3084\u308c\u3070\u3044\u3044\u3002EventLisner\u306b\u9650\u3063\u305f\u3053\u3068\u3067\u306f\u306a\u3044\u3051\u3069\u3002\u3002<\/p>\n

\"\"<\/div>
Stack Overflow<\/div>
6 Pockets<\/div><\/div><\/div>
\"\"<\/figure>
Kotlin: Interface ... does not have constructors<\/div>
https:\/\/stackoverflow.com\/questions\/43737785\/kotlin-interface-does-not-have-constructors<\/div>
I am converting some of my Java code to Kotlin and I do not quite understand how to instantiate interfaces that are defined in Kotlin code. As an example, I have an interface (defined in Java code):<\/div><\/div>
<\/div><\/div><\/a><\/div><\/div>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Google\u306e\u516c\u5f0f\u8a00\u8a9e\u304cJava\u304b\u3089Kotlin\u306b\u5909\u66f4\u3055\u308c\u3066\u4e45\u3057\u3044\u3002\u4eca\u307e\u3067Java\u3067\u884c\u3053\u3046\u304b\u306a\u3068\u601d\u3063\u3066\u305f\u3051\u3069\u3001objective-c\u304b\u3089swift\u3078\u3001java\u304b\u3089Kotlin\u3078\u306a\u3093\u3066\u3001\u4e16\u306e\u4e2d\u306e\u6d41\u308c\u3092\u898b\u3066\u3044\u308b\u3068\u3001\u4e92\u63db\u6027\u304c\u4fdd […]<\/p>\n","protected":false},"author":1,"featured_media":2535,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_locale":"","_original_post":"","footnotes":""},"categories":[5,37],"tags":[],"class_list":["post-1851","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-android","category-kotlin","ja"],"_links":{"self":[{"href":"https:\/\/androiphone.uvs.jp\/index.php?rest_route=\/wp\/v2\/posts\/1851","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/androiphone.uvs.jp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/androiphone.uvs.jp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/androiphone.uvs.jp\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/androiphone.uvs.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1851"}],"version-history":[{"count":7,"href":"https:\/\/androiphone.uvs.jp\/index.php?rest_route=\/wp\/v2\/posts\/1851\/revisions"}],"predecessor-version":[{"id":1859,"href":"https:\/\/androiphone.uvs.jp\/index.php?rest_route=\/wp\/v2\/posts\/1851\/revisions\/1859"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/androiphone.uvs.jp\/index.php?rest_route=\/wp\/v2\/media\/2535"}],"wp:attachment":[{"href":"https:\/\/androiphone.uvs.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1851"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/androiphone.uvs.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1851"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/androiphone.uvs.jp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1851"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}