报错！
Error:Execution failed for task ':app:javaPreCompileDebug'.
> Annotation processors must be explicitly declared now. The following dependencies on the compile classpath are found to contain annotation processor. Please add them to the annotationProcessor configuration.
- butterknife-6.0.0.jar (com.jakewharton:butterknife:6.0.0)
Alternatively, set android.defaultConfig.javaCompileOptions.annotationProcessorOptions.includeCompileClasspath = true to continue with 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.
切换为Project，打开app->build.gradle中android {
...
defaultConfig {
...
( 在defaultConfig中添加如下代码 :)
javaCompileOptions {
annotationProcessorOptions {
includeCompileClasspath = true
}
}
}
...
}
例如：