Android Kotlin: RuntimeException: Unable to instantiate activity ComponentInfo{...}

今天想嘗試一下kotlin寫個Android Demo， 結果運行總是直接crash,報以下錯：

java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.***.demo/com.***.demo.android.**Activity}: java.lang.ClassNotFoundException: Didn't find class "***" on path: DexPathLis

 

查閱資料後發現是配置問題：

需要在build.gradle中加上一句：

apply plugin: 'kotlin-android'