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Merge pull request saturnism#9 from shuza/master
grpc simple android client example added
2 parents d8852f4 + 0fabff5 commit fbb06ce

33 files changed

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‎simple-grpc-client-android/.gitignore‎

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*.iml
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.gradle
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/local.properties
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/.idea/libraries
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/.idea/modules.xml
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/.idea/workspace.xml
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.DS_Store
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/build
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/captures
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.externalNativeBuild

‎simple-grpc-client-android/app/.gitignore‎

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/build

‎simple-grpc-client-android/app/build.gradle‎

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apply plugin: 'com.android.application'
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apply plugin: 'com.google.protobuf'
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android {
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compileSdkVersion 28
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defaultConfig {
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applicationId "com.example.grpc.client"
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minSdkVersion 16
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targetSdkVersion 28
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versionCode 1
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versionName "1.0"
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testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
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}
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buildTypes {
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release {
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minifyEnabled false
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proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
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}
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}
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compileOptions {
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targetCompatibility 1.8
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sourceCompatibility 1.8
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}
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}
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protobuf {
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protoc {
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artifact = 'com.google.protobuf:protoc:3.0.0'
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}
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plugins {
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grpc {
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artifact = 'io.grpc:protoc-gen-grpc-java:1.0.0-pre2'
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}
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javalite {
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artifact = 'com.google.protobuf:protoc-gen-javalite:3.0.0'
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}
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}
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generateProtoTasks {
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all()*.plugins {
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javalite {}
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}
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ofNonTest()*.plugins {
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grpc {
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// Options added to --grpc_out
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option 'lite'
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}
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}
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}
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}
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dependencies {
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implementation fileTree(dir: 'libs', include: ['*.jar'])
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implementation 'com.android.support:appcompat-v7:28.0.0-alpha3'
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implementation 'com.android.support.constraint:constraint-layout:1.1.2'
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testImplementation 'junit:junit:4.12'
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androidTestImplementation 'com.android.support.test:runner:1.0.2'
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androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
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// GRPC dependencies
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implementation 'javax.annotation:javax.annotation-api:1.2'
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implementation 'io.grpc:grpc-protobuf-lite:1.12.0'
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implementation 'io.grpc:grpc-okhttp:1.12.0'
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implementation 'io.grpc:grpc-stub:1.12.0'
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// rx java
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implementation "io.reactivex.rxjava2:rxjava:$rx_java_verstion"
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implementation "io.reactivex.rxjava2:rxandroid:$rx_android"
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// dialog library
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implementation 'com.github.d-max:spots-dialog:0.7@aar'
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}

‎simple-grpc-client-android/app/proguard-rules.pro‎

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# Add project specific ProGuard rules here.
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# You can control the set of applied configuration files using the
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# proguardFiles setting in build.gradle.
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#
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# For more details, see
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# http://developer.android.com/guide/developing/tools/proguard.html
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# If your project uses WebView with JS, uncomment the following
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# and specify the fully qualified class name to the JavaScript interface
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# class:
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#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
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# public *;
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#}
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# Uncomment this to preserve the line number information for
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# debugging stack traces.
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#-keepattributes SourceFile,LineNumberTable
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# If you keep the line number information, uncomment this to
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# hide the original source file name.
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#-renamesourcefileattribute SourceFile

‎simple-grpc-client-android/app/src/androidTest/java/com/example/grpc/client/ExampleInstrumentedTest.java‎

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package com.example.grpc.client;
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import android.content.Context;
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import android.support.test.InstrumentationRegistry;
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import android.support.test.runner.AndroidJUnit4;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import static org.junit.Assert.*;
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/**
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* Instrumented test, which will execute on an Android device.
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*
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* @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
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*/
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@RunWith(AndroidJUnit4.class)
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public class ExampleInstrumentedTest {
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@Test
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public void useAppContext() {
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// Context of the app under test.
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Context appContext = InstrumentationRegistry.getTargetContext();
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assertEquals("com.example.grpc.client", appContext.getPackageName());
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}
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}

‎simple-grpc-client-android/app/src/main/AndroidManifest.xml‎

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<?xml version="1.0" encoding="utf-8"?>
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<manifest xmlns:android="http://schemas.android.com/apk/res/android"
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package="com.example.grpc.client">
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<uses-permission android:name="android.permission.INTERNET" />
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<application
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android:allowBackup="true"
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android:icon="@mipmap/ic_launcher"
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android:label="@string/app_name"
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android:roundIcon="@mipmap/ic_launcher_round"
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android:supportsRtl="true"
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android:theme="@style/AppTheme">
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<activity android:name=".MainActivity">
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<intent-filter>
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<action android:name="android.intent.action.MAIN" />
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<category android:name="android.intent.category.LAUNCHER" />
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</intent-filter>
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</activity>
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</application>
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</manifest>

‎simple-grpc-client-android/app/src/main/java/com/example/grpc/client/MainActivity.java‎

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package com.example.grpc.client;
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import android.support.v7.app.AppCompatActivity;
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import android.os.Bundle;
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import android.view.View;
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import android.widget.Button;
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import android.widget.TextView;
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import com.example.learn.GreetingServiceGrpc;
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import com.example.learn.HelloRequest;
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import com.example.learn.HelloResponse;
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import com.example.learn.Sentiment;
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import dmax.dialog.SpotsDialog;
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import io.grpc.ManagedChannel;
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import io.grpc.ManagedChannelBuilder;
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/**
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* := created by: Shuza
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* := create date: 10-Jul-2018
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* := (C) CopyRight Shuza
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* := www.shuza.ninja
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* := shuza.sa@gmail.com
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* := Fun : Coffee : Code
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**/
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public class MainActivity extends AppCompatActivity {
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private TextView tvResult;
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private Button btnConnect;
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private final String SERVER_ADDRESS = "192.168.43.169";
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private final int PORT = 8080;
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private SpotsDialog dialog;
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.activity_main);
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findViews();
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dialog = new SpotsDialog(this, R.style.LoadingDialog);
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dialog.setCancelable(false);
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btnConnect.setOnClickListener((View v) -> {
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ManagedChannel channel = ManagedChannelBuilder.forAddress(SERVER_ADDRESS, PORT)
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.usePlaintext()
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.build();
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requestExampleService(channel);
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});
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}
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private void requestExampleService(ManagedChannel channel) {
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GreetingServiceGrpc.GreetingServiceBlockingStub stub = GreetingServiceGrpc
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.newBlockingStub(channel);
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HelloRequest helloRequest = HelloRequest.newBuilder()
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.setName("Shuza")
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.setAge(20)
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.setSentiment(Sentiment.HAPPY)
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.build();
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dialog.show();
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Thread backgroundThread = new Thread(() -> {
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try {
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HelloResponse helloResponse = stub.greeting(helloRequest);
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showResultMessage("Response: " + helloResponse.getGreeting());
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} catch (Exception e) {
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showResultMessage("Error: " + e.getMessage());
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}
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});
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backgroundThread.start();
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}
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/**
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* show message on UI Thread
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* and dismiss loading dialog
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*
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* @param message
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*/
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private void showResultMessage(String message) {
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runOnUiThread(() -> {
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tvResult.setText(message);
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dialog.dismiss();
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});
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}
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/**
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* find all components from view
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*/
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private void findViews() {
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tvResult = findViewById(R.id.tv_result);
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btnConnect = findViewById(R.id.btn_server_connect);
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}
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}

‎simple-grpc-client-android/app/src/main/proto/ExampleServices.proto‎

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/**
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* := created by: Shuza
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* := create date: {DATE}
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* := (C) CopyRight Shuza
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* := www.shuza.ninja
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* := shuza.sa@gmail.com
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* := Fun : Coffee : Code
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**/
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syntax = "proto3";
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option java_multiple_files = true;
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option java_generic_services = true;
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package com.example.learn;
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enum Sentiment {
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HAPPY = 0;
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SLEEPY = 1;
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ANGRY = 2;
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}
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message HelloRequest {
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string name = 1;
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int32 age = 2;
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repeated string hobbies = 3;
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map<string, string> bagOfTricks = 4;
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Sentiment sentiment = 5;
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}
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message HelloResponse {
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string greeting = 1;
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}
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// 4. service, unary request/response
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service GreetingService {
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rpc greeting (HelloRequest) returns (HelloResponse);
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}

‎simple-grpc-client-android/app/src/main/res/drawable-v24/ic_launcher_foreground.xml‎

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<vector xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:aapt="http://schemas.android.com/aapt"
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android:width="108dp"
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android:height="108dp"
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android:viewportHeight="108"
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android:viewportWidth="108">
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<path
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android:fillType="evenOdd"
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android:pathData="M32,64C32,64 38.39,52.99 44.13,50.95C51.37,48.37 70.14,49.57 70.14,49.57L108.26,87.69L108,109.01L75.97,107.97L32,64Z"
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android:strokeColor="#00000000"
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android:strokeWidth="1">
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<aapt:attr name="android:fillColor">
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<gradient
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android:endX="78.5885"
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android:endY="90.9159"
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android:startX="48.7653"
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android:startY="61.0927"
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android:type="linear">
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<item
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android:color="#44000000"
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android:offset="0.0" />
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<item
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android:color="#00000000"
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android:offset="1.0" />
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</gradient>
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</aapt:attr>
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</path>
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<path
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android:fillColor="#FFFFFF"
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android:fillType="nonZero"
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android:pathData="M66.94,46.02L66.94,46.02C72.44,50.07 76,56.61 76,64L32,64C32,56.61 35.56,50.11 40.98,46.06L36.18,41.19C35.45,40.45 35.45,39.3 36.18,38.56C36.91,37.81 38.05,37.81 38.78,38.56L44.25,44.05C47.18,42.57 50.48,41.71 54,41.71C57.48,41.71 60.78,42.57 63.68,44.05L69.11,38.56C69.84,37.81 70.98,37.81 71.71,38.56C72.44,39.3 72.44,40.45 71.71,41.19L66.94,46.02ZM62.94,56.92C64.08,56.92 65,56.01 65,54.88C65,53.76 64.08,52.85 62.94,52.85C61.8,52.85 60.88,53.76 60.88,54.88C60.88,56.01 61.8,56.92 62.94,56.92ZM45.06,56.92C46.2,56.92 47.13,56.01 47.13,54.88C47.13,53.76 46.2,52.85 45.06,52.85C43.92,52.85 43,53.76 43,54.88C43,56.01 43.92,56.92 45.06,56.92Z"
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android:strokeColor="#00000000"
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android:strokeWidth="1" />
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</vector>

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