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Error:Execution failed for task ':app:javaPreCompileDebug'异常

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android studio3.0升级之后出现Error:Execution failed for task ':app:javaPreCompileDebug'异常,这是因为butterknife错误造成的,具体异常如下:

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-6.1.0.jar (com.jakewharton:butterknife:6.1.0)

  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.

解决方案:修改build.gradle文件,添加如下配置内容即可

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


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