构建失败 (Google I/O Android App 2017)

Build fail with (Google I/O Android App 2017)

错误日志:

warning: [options] bootstrap class path not set in conjunction with -source 1.7
/Users/samuelyang/AndroidStudioProjects/iosched-master/server/build/generated-source/endpoints/java/com/google/samples/apps/iosched/rpc/cms/Cms.java:346: 
error: method does not override or implement a method from a supertype
@override
^

如何构建它?

错误发生在一个名为Cms.java的文件中,Cms.java的代码如下:

@Override
public Builder setBatchPath(String batchPath) {
  return (Builder) super.setBatchPath(batchPath);
}

每次我评论所有这些错误代码并构建项目时,所有这些代码都会自动生成,我不知道如何处理这个... 谁能帮帮我?谢谢...

Download Google I/O 2017 Android App here

我在其他项目中遇到了同样的问题。 尝试在 build.gradle

中将 google-api-客户端库从 1.22.0 更改为 1.23.0
compile 'com.google.api-client:google-api-client:1.23.0'     
compile 'com.google.http-client:google-http-client-android:1.23.0'