Какой контекст будет передан в WorkManager.getInstance() ⇐ Android

[Anonymous]

I am trying to enqueue a WorkManager worker through a repository Method in order to insert some data inside my database but i can't seem to figure out what type of context i should pass inside the getInstance(). Obviously the Context i am giving is wrong since i am getting a NullPointerException. I am new to Android development and the concept of Context can be confusing. I've tried everything but i am sure it's something simple. I am using MVVM (let me know if i should not enqueue a Worker inside the repository) + RoomDatabase.

AddWorkoutRepository.java

public class AddWorkoutRepository { private static final String REPOSITORY_TAG = "REPOSITORY TAG"; private AddWorkoutWorker worker; private WorkoutDAO workoutDAO; //private LiveData workouts; public AddWorkoutRepository(Application application){ AppDatabase database = AppDatabase.getInstance(application); workoutDAO = database.workoutDAO(); //workouts = workoutDAO.getAllWorkoutsLiveData(); } /*public LiveData getAllWorkouts(){ return workouts; }*/ public void insertWorkout(Workout workout){ String workoutName = workout.getWorkoutName(); String workoutType = workout.getWorkoutType(); Log.d(REPOSITORY_TAG, "Insert Values passed: "+workoutName + workoutType); Data data = new Data.Builder() .putString(WORK_WORKOUT_NAME, workoutName) .putString(WORK_WORKOUT_TYPE, workoutType) .build(); OneTimeWorkRequest importDataRequest = new OneTimeWorkRequest.Builder(AddWorkoutWorker.class) .setInputData(data) .addTag("Importing Single Workout" + workoutName + " and " + workoutType) .build(); WorkManager.getInstance(worker.getApplicationContext()).enqueue(importDataRequest); Log.d(REPOSITORY_TAG, "After work manager task OK"); } } AddWorkoutWorker.java

public class AddWorkoutWorker extends Worker { public static final String WORK_WORKOUT_NAME = "workout"; public static final String WORK_WORKOUT_TYPE = "type"; private static final String WORKER_TAG = "Worker Tag"; private WorkoutDAO workoutDAO; public AddWorkoutWorker(@NonNull Context context, @NonNull WorkerParameters workerParams) { super(context, workerParams); } @NonNull @Override public Result doWork() { Data inputData = getInputData(); String workoutName = inputData.getString(WORK_WORKOUT_NAME); String workoutType = inputData.getString(WORK_WORKOUT_TYPE); if (workoutName != null && workoutType != null){ Log.d(WORKER_TAG,"Worker data passed: "+workoutName + workoutType); Workout workout = new Workout(workoutName, workoutType); workoutDAO.insertSingleWorkout(workout); }else{ return Result.failure(); } return Result.success(); } } If more code is needed feel free to ask me. Thank you so much for the help in advance!


Источник: https://stackoverflow.com/questions/670 ... etinstance