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

今天想尝试一下kotlin写个Android Demo， 结果运行总是直接crash,报以下错：

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

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

查阅资料后发现是配置问题：

需要在build.gradle中加上一句：

apply plugin: 'kotlin-android'
Android Kotlin: RuntimeException: Unable to instantiate activity ComponentInfo{...}
android bug kotlin instantiate Activity runtime
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