java.lang.BootstrapMethodError: Exception from call site #0 bootstrap method

解决方案：https://github.com/JakeWharton/butterknife/issues/1468

ButterKnife requires that you enable Java 8 in your builds to function as of version 9.0.0 and newer. You can learn more about how to enable this at https://developer.android.com/studio/write/java8-support.

Butterknife 9.0.0以后的版本需要Java8的支持。

在build.gradle中加入

android{
  compileOptions {
     targetCompatibility = "8"
     sourceCompatibility = "8"
  }
}