android - 使用 android WorkManager 响应 Native HeadlessJs 任务调用

Question

我正在使用 Android WorkManager 创建一个 React Native 后台同步任务。 WorkManager 类中的 doWork 方法会定期正确调用。我面临的问题是如何从 doWork 方法调用 react native 函数。
在我当前的实现中，没有调用 JavaScript 函数。
React Native 中的 headless 任务

// index.js
AppRegistry.registerHeadlessTask('SyncHeadlessTask', () => SyncHeadlessTask);

// SyncHeadlessTask.js
module.exports = async (taskData) => {
    console.log('task running');
};

我在 Java 中的 HeadlessTask

public class SyncHeadlessTaskService extends HeadlessJsTaskService {
    @Override
    protected @Nullable HeadlessJsTaskConfig getTaskConfig(Intent intent) {
        Bundle extras = intent.getExtras();
        if (extras != null) {
            return new HeadlessJsTaskConfig(
                    "SyncHeadlessTask",
                    Arguments.fromBundle(extras),
                    10000, // timeout for the task
                    true // optional: defines whether or not  the task is allowed in foreground. Default is false
            );
        }
        return null;
    }
}

我的 worker

public class SyncWorker extends Worker {
    private static final String TAG = "SyncWorker";

    public SyncWorker(@Nonnull Context context, @Nonnull WorkerParameters workerParams) {
        super(context, workerParams);
    }

    @Nonnull
    @Override
    public Result doWork() {
        return Result.success();
    }
}

我的模块

public class SyncModule extends ReactContextBaseJavaModule {
    private static final String MODULE_NAME = "SyncManager";
    private Context mContext;
    private PeriodicWorkRequest workRequest;
    private static final String TAG = "SyncModule";

    SyncModule(@Nonnull ReactApplicationContext reactContext) { 
            super(reactContext);
            mContext = reactContext;
            workRequest = new PeriodicWorkRequest.Builder(SyncWorker.class, 15, TimeUnit.MINUTES).build();
    }

    @ReactMethod
    public void startSync() {
        WorkManager.getInstance().enqueueUniquePeriodicWork("SyncWork", ExistingPeriodicWorkPolicy.KEEP, workRequest);
    }

    @ReactMethod
    public void stopSync() {
        WorkManager.getInstance().cancelUniqueWork("SyncWork");
    }

    @Nonnull
    @Override
    public String getName() {
        return MODULE_NAME;
    }
}

我的包裹

public class SyncPackage implements ReactPackage  {

    @Nonnull
    @Override
    public List<NativeModule> createNativeModules(@Nonnull ReactApplicationContext reactContext) {
        List<NativeModule> modules = new ArrayList<>();
        modules.add(new SyncModule(reactContext));
        return modules;
    }

    @Nonnull
    @Override
    public List<ViewManager> createViewManagers(@Nonnull ReactApplicationContext reactContext) {
        return Collections.emptyList();
    }
}

Answer 1

您需要将任务作为服务启动:

@Nonnull
@Override
public Result doWork() {
    Intent service = new Intent(getApplicationContext(), SyncHeadlessTaskService.class);
    Bundle bundle = new Bundle();
    bundle.putString("foo", "bar");
    service.putExtras(bundle);
    getApplicationContext().startService(service);
    return Result.success();
}

不要忘记配置您的 AndroidManifest:

<service android:name="your.package.SyncHeadlessTaskService" />