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我在Android工程中新建了一个Java library，在dependency中加入了

"com.android.support:support-annotations:25.3.1"

这个依赖库，结果在编译时报错：

在网上找的原因说是因为和android其他库的版本号不统一，但是统一之后仍然会报错，随后我模仿butterknife-annotations的build.gradle文件（链接：

https://github.com/JakeWharton/butterknife/blob/master/butterknife-annotations/build.gradle

）的写法在里面加上了如下代码块：

def logger = new com.android.build.gradle.internal.LoggerWrapper(project.logger)
def sdkHandler = new com.android.build.gradle.internal.SdkHandler(project, logger)
for (File file : sdkHandler.sdkLoader.repositories) {
  repositories.maven {
    url = file.toURI()
  }
}

解决了这个问题，整个build.gradle文件如下：

apply plugin: 'java'

def logger = new com.android.build.gradle.internal.LoggerWrapper(project.logger)
def sdkHandler = new com.android.build.gradle.internal.SdkHandler(project, logger)
for (File file : sdkHandler.sdkLoader.repositories) {
  repositories.maven {
    url = file.toURI()
  }
}

sourceCompatibility = "1.7"
targetCompatibility = "1.7"

dependencies {
  compileOnly 'com.google.android:android:4.1.1.4'
  compile 'com.android.support:support-annotations:23.1.1'
}