AndroidStudio3.0 註解報錯Annotation processors must be explicitly declared now.

轉載請標明出處:http://blog.csdn.net/donkor_/article/details/79020482

前言

昨天在github下載了一個項目,項目中有一個關於ButterKnife的錯誤

Error:Execution failed for task ':cursorWheelLayoutSam: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-7.0.1.jar (com.jakewharton:butterknife:7.0.1)
  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.

▲ 解決方案 一:

在app的build中添加下面的代碼(可能會失效)

defaultConfig {
        ...
        javaCompileOptions {
            annotationProcessorOptions {
                includeCompileClasspath true
            }
        }
    }

▲ 解決方案 二(推薦):
依賴修改爲如下:

provided 'com.jakewharton:butterknife:7.0.1'
annotationProcessor 'com.jakewharton:butterknife:7.0.1'

參考:
https://stackoverflow.com/questions/44084251/android-studio-3-0-canary-1-annotation-processor-error

解決 ヾ(◍°∇°◍)ノ゙

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