Android 应用无法构建

Question

gradle attemp to build project(with protobuf)后有日志

:app:generateDebugProto FAILED

FAILURE: Build failed with an exception.

• What went wrong: Execution failed for task ':app:generateDebugProto'.

  protoc: stdout: . stderr: /Users//app/build/extracted-protos/main: warning: directory does not exist. /Users//app/src/debug/proto: warning: directory does not exist.
  /Users//app/build/extracted-protos/debug: warning: directory does not exist. /Users//app/build/extracted-include-protos/debug: warning: directory does not exist. /Users//app/src/debug/proto: warning: directory does not exist. /Users//app/build/extracted-protos/debug: warning: directory does not exist.
  /Users/_/app/build/extracted-include-protos/debug: warning: directory does not exist. Missing output directives.

• 尝试:使用 --stacktrace 选项运行以获取堆栈跟踪。使用 --info 或 --debug 选项运行以获得更多日志输出。

无法修复。

Answer 1

以下配置对我有用

项目级build.gradle文件

classpath 'com.google.protobuf:protobuf-gradle-plugin:0.8.10'

应用级build.gradle文件

apply plugin: 'com.android.application'
apply plugin: 'com.google.protobuf'

protobuf {
    protoc {
        artifact = 'com.google.protobuf:protoc:3.8.0'
    }
    plugins {
        javalite {
            artifact = 'com.google.protobuf:protoc-gen-javalite:3.0.0'
        }
        grpc {
            artifact = 'io.grpc:protoc-gen-grpc-java:1.0.0-pre2'
        }
    }
    generateProtoTasks {
        all().each { task ->
            task.builtins {
                remove java
            }
            task.plugins {
                javalite { }
                grpc {
                    option 'lite'
                }
            }
        }
    }
}