CODEWITHSUNDEEP
androidnativescriptbackground-service
Deeh
Deeh

Reputation: 347

How can I implement Android Background Service in NativeScript targeting both API Level 26+ and below

I need to implement a Background Service in NativeScript which will get user location each x minutes, make a request to my API, and depending on the response, emit a local notification.

So I started searching for ways to implement this, which led me to this NativeScript repository. As stated in the README:

The current implementation utilizes the NotificationChannel, which was added in API Level 26. If you want to target lower API Levels, take a look at the older implementation Alarm Manager Implementation. Have in mind, that this approaches is not supported with API Level 26 or newer due to limitations in the OS.

I need to support Android 5.1+ (API Level 22+), so the new implementation will not work for me, instead, I should use the older Alarm Manager Implementation as mentioned. The problem is, as you can see in the quote, this approach is not supported with API Level 26+.

And as everyone knows, Google is forcing new apps to target at least API Level 28. So, how can I implement a Background Service which will work from API Level 22 to 28?

Upvotes: 1

Views: 635

Answers (1)

Manoj
Manoj

Reputation: 21908

You may refer to the example in the nativescript-geolocation plugin repo, works for all supported versions of Android.

     if (device.sdkVersion < "26") {
        @JavaProxy("com.nativescript.location.BackgroundService")
        class BackgroundService extends (<any>android).app.Service {
            constructor() {
                super();
                return global.__native(this);
            }
            onStartCommand(intent, flags, startId) {
                console.log('service onStartCommand');
                this.super.onStartCommand(intent, flags, startId);
                return android.app.Service.START_STICKY;
            }
            onCreate() {
                console.log('service onCreate');
                _startWatch();
            }
            onBind(intent) {
                console.log('service onBind');
            }
            onUnbind(intent) {
                console.log('service onUnbind');
            }
            onDestroy() {
                console.log('service onDestroy');
                _clearWatch();
            }
        }
        return BackgroundService;
    } else {
        @JavaProxy("com.nativescript.location.BackgroundService26")
        class BackgroundService26 extends (<any>android.app).job.JobService {
            constructor() {
                super();
                return global.__native(this);
            }
            onStartJob(): boolean {
                console.log('service onStartJob');
                _startWatch();
                return true;
            }
            onStopJob(jobParameters: any): boolean {
                console.log('service onStopJob');
                this.jobFinished(jobParameters, false);
                _clearWatch();
                return false;
            }
        }
        return BackgroundService26;
    }

Upvotes: 3

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