Error:Execution failed for task ':aT:javaPreCompileDebug'.
> Annotation processors must now be declared explicitly. The following dependencies in the compile classpath are found to contain annotation processors. Please add them to the annotationProcessor configuration.
- butterknife-5.1.1.jar
Alternatively, set android.defaultConfig.javaCompileOptions.annotationProcessorOptions.includeCompileClasspath = true to continue with the previous behavior. Note that this option is deprecated and will be removed in the future.
See https://developer.android.com/r/tools/annotation-processor-error-message.html for more details.

经过排查，发现是Gradle引发的异常，这里大体说明下：

新的 gradle 插件不再支持 annotation processors，如果需要使用需要显式声明
So，解决办法如下：

defaultConfig {
...
ndk {
// 设置支持的SO库架构（开发者可以根据需要，选择一个或多个平台的so）
abiFilters "armeabi", "arm64-v8a"
}
javaCompileOptions {
// 显式声明支持注解
annotationProcessorOptions {
includeCompileClasspath false
}
}
}