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                ## 創建匿名類對象 如果是做過Android開發的同學,對點擊事件的設置一點也不陌生。我們直接看如下代碼: ![](http://upload-images.jianshu.io/upload_images/7368752-fd1b3aad2d06861b.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240) setOnclickListener方法需要的是一個OnClickListener接口對象。實際在被調用的時候,我們傳入了一個OnClickListener的匿名內部類對象。 **Kotlin里面,沒有匿名內部類,但是可以通過object關鍵字去完成**。參考代碼: ![](http://upload-images.jianshu.io/upload_images/7368752-3cdcd58b6b7a6056.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240) 這里是實現了OnClickListener接口的對象。**除了實現某一個接口,還可以繼承某一個類**,參考代碼: ![](http://upload-images.jianshu.io/upload_images/7368752-7e8d9eef491c98a1.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240) 這里的對象【gougou】,可以理解為是基類的【Animal】的一個子類對象,我們通過重載方法,讓基類的“吃吃吃...”,變成了具體的“吃骨頭”。 **object聲明的對象,除了實現某一個接口、繼承某一個類,還可以既不實現接口,也不繼承類**,參考代碼: ![](http://upload-images.jianshu.io/upload_images/7368752-2f5f7614f1bdd360.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
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