//指定proto的版本為proto3，不寫的話默認為proto2.
syntax = "proto3";
//包名
package proto;
//引入包
//import "";
//指定生成類所在的Java包名
option java_package = "com.example.demowork1";
//重命名，如果不寫，默認為文件名的首字母大寫轉化生成，如本文件如果不寫則是Person
option java_outer_classname = "PersonProto";

message Person{
  string name = 1;
  int32 id = 2;
  bool boo = 3;
  string email = 4;
  string phone = 5;
}

buildscript {
    ext.kotlin_version = "1.3.72"
    repositories {
        google()
        jcenter()
        maven { url "https://jitpack.io" }
        mavenCentral()
    }
    dependencies {
        classpath "com.android.tools.build:gradle:4.1.0"
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
        classpath 'com.google.protobuf:protobuf-gradle-plugin:0.8.8'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

plugins {
  	...
    id 'com.google.protobuf'
}
android{
	...
        sourceSets {
        main {
            java.srcDirs = ['src/main/java']
            jniLibs.srcDirs = ['libs']
            assets.srcDirs = ['assets']

            proto {
                //指定proto文件位置,你的proto文件放置在此文件夾中
                srcDir 'src/main/proto'
            }
        }
    }
}
dependencies{
	...
	    implementation 'com.google.protobuf:protobuf-java:3.5.1'
    	implementation 'com.google.protobuf:protoc:3.5.1'
}
protobuf {
    protoc {
        artifact = 'com.google.protobuf:protoc:3.5.1' // 也可以配置本地編譯器路徑
    }

    generateProtoTasks {
        all().each { task ->
            task.builtins {
                remove java
            }
            task.builtins {
                java {}// 生產java源碼
            }
        }
    }
}

        var person1 = PersonProto.Person.newBuilder().setName("Tom")
            .setId(111).setBoo(false).setEmail("123@123.com").setPhone("123456789")
            .build()
        tvData.setOnClickListener {
            var dataTemp = PersonProto.Person.parseFrom(person1.toByteArray())
            LogUtil.instance.d(dataTemp.toString())
//            mHandler.sendEmptyMessage(1)
        }

com.example.demowork1 D/message: name: "Tom"
    id: 111
    email: "123@123.com"
    phone: "123456789"