这篇博客主要讨论了Android Studio中遇到的注解处理器必须显式声明的问题。开发者需要在build.gradle(app)文件中添加特定配置，以解决butterknife等依赖引起的编译错误。通过设置`android.defaultConfig.javaCompileOptions.annotationProcessorOptions.includeCompileClasspath = true`，可以继续使用之前的编译行为。然而，这种做法已被标记为过时，未来将被移除。推荐的做法是将依赖项明确添加到`annotationProcessor`配置中。
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
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.
在build.gradle(app)下增加如下配置
android {
...
defaultConfig {
...
javaCompileOptions {
annotationProcessorOptions {
includeCompileClasspath = true
}
}
}
}
具体如下:
android {
compileSdkVersion 23
buildToolsVersion '27.0.3'
defaultConfig {
applicationId "com.whatled.demo"
minSdkVersion 11
targetSdkVersion 23
versionCode 1
versionName "1.0"
javaCompileOptions {
annotationProcessorOptions {
includeCompileClasspath = true
}
}
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
}
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