笔者所用开发环境:Win7 x64,Android Studio3.2.1,JDK1.8,Gradle 4.6
0.编写.proto文件、编译.proto生成对应Java源文件,具体步骤略,请参考上一篇文章https://www.cnblogs.com/areful/p/10404506.html
1.修改build.gradle:
... buildscript { ... dependencies { ... classpath 'com.google.protobuf:protobuf-gradle-plugin:0.8.6' } } ...
2.修改app/build.gradle:
apply plugin: 'com.android.application' apply plugin: 'com.google.protobuf' ... dependencies { implementation fileTree(dir: 'libs', include: ['*.jar']) implementation 'com.android.support:appcompat-v7:28.0.0' implementation 'com.android.support.constraint:constraint-layout:1.1.3' testImplementation 'junit:junit:4.12' androidTestImplementation 'com.android.support.test:runner:1.0.2' androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2' implementation 'io.grpc:grpc-netty-shaded:1.15.1' implementation 'io.grpc:grpc-netty:1.15.1' implementation 'io.grpc:grpc-core:1.15.1' implementation 'io.grpc:grpc-protobuf:1.15.1' implementation 'io.grpc:grpc-stub:1.15.1' implementation 'io.grpc:grpc-alts:1.15.1' implementation 'io.netty:netty-tcnative-boringssl-static:2.0.18.Final' implementation 'com.google.protobuf:protobuf-java-util:3.0.0-beta-1' }
3.添加app需要权限:
<uses-permission android:name="android.permission.INTERNET" />
4.app中调用GRPC:
package cn.areful.sample.grpc; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import io.grpc.examples.helloworld.HelloWorldClient; public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); try { HelloWorldClient.main(new String[]{}); } catch (Exception e) { e.printStackTrace(); } } }
注:HelloWorldClient中初始化IP地址需修改为对应Server地址,在笔者机器上如下:
HelloWorldClient client = new HelloWorldClient("10.102.54.2", 50051);
5.先Java中运行Server端(参见https://www.cnblogs.com/areful/p/10404506.html),再运行app,logcat: