How Huawei's Push Kit works

Hello, Habr! In May last year, left without Google services and APIs, we thoroughly started working on our Huawei Mobile Services platform . This is our long-standing project, to which we returned after the imposition of US sanctions. The problem of "cut off" services gradually faded away. We have added missing components: an email client, our own maps and other services, and HMS Core - a set of APIs, SDKs and other services for developing and improving applications. This set includes the Push Kit - a cloud-based notification service - and more. Under the cut, we will tell you how this tool works, how it stands out and how it can be used.

The main function of the Push Kit (we'll talk about the rest later) is to deliver notifications from applications to the user's device. This process is organized like this:

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AppGallery Connect.

1. AppGallery Connect My project.

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3. Project Setting → General information. App information agconnect-services.json.

4. agconnect-services.json Android Studio.

. build.gradle .

dependencies:

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'androidx.appcompat:appcompat:1.0.2'
    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'androidx.test:runner:1.1.1'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'

    // Add the following line
    implementation 'com.huawei.hms:push:5.0.0.300'
}

5.0.0.300 HMS Core Push SDK.

Sync Now, build.gradle.

synced successfully, .

Manifest

push , Push Kit, AndroidManifest.xml. MyPushService, HmsMessageService.

<service
    android:name=".MyPushService"
    android:exported="false">
    <intent-filter>
        <action android:name="com.huawei.push.action.MESSAGING_EVENT" />
    </intent-filter>
</service>

MyPushService android: name = ". MyPushService" , HmsMessageService. .

proguard-rules.pro Android Studio. , HMS Core SDK.

-ignorewarnings
-keepattributes *Annotation*
-keepattributes Exceptions
-keepattributes InnerClasses
-keepattributes Signature
-keepattributes SourceFile,LineNumberTable
-keep class com.hianalytics.android.**{*;}
-keep class com.huawei.updatesdk.**{*;}
-keep class com.huawei.hms.**{*;}

AndResGuard, c .

"R.string.agc*",
"R.string.hms*",
"R.string.connect_server_fail_prompt_toast",
"R.string.getting_message_fail_prompt_toast",
"R.string.no_available_network_prompt_toast",
"R.string.third_app_*",
"R.string.upsdk_*",
"R.layout.hms*",
"R.layout.upsdk_*",
"R.drawable.upsdk*",
"R.color.upsdk*",
"R.dimen.upsdk*",
"R.style.upsdk*"

.

Android Studio, TextView MainActivity, . , MainActivity, TextView.

public class MainActivity extends AppCompatActivity {
    private TextView tvToken;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        tvToken = findViewById(R.id.tv_log);

        MyReceiver receiver = new MyReceiver();
        IntentFilter filter=new IntentFilter();
        filter.addAction("com.huawei.codelabpush.ON_NEW_TOKEN");
        MainActivity.this.registerReceiver(receiver,filter);
    }

    public class MyReceiver extends BroadcastReceiver {

        @Override
        public void onReceive(Context context, Intent intent) {
            if ("com.huawei.codelabpush.ON_NEW_TOKEN".equals(intent.getAction())) {
                String token = intent.getStringExtra("token");
                tvToken.setText(token);
            }
        }
    }
}

<meta-data> AndroidManifest.xml.

<application
    <meta-data
        android:name="push_kit_auto_init_enabled"
        android:value="true" />
</application>

Name value meta-data . Push SDK .

onNewToken thMyPushService*ce class.

MyPushService.java

public class MyPushService extends HmsMessageService {
    private static final String TAG = "PushDemoLog";
    @Override
    public void onNewToken(String token) {
        super.onNewToken(token);
        Log.i(TAG, "receive token:" + token);
        sendTokenToDisplay(token);
    }

    private void sendTokenToDisplay(String token) {
        Intent intent = new Intent("com.huawei.push.codelab.ON_NEW_TOKEN");
        intent.putExtra("token", token);
        sendBroadcast(intent);
    }
}

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adb install D:\WorkSpace\CodeLab\pushdemo1\app\release\app-release.apk

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