对于周期性任务，我将工作管理器用作:PeriodicWorkRequest.BuilderwifiWorkBuilder=newPeriodicWorkRequest.Builder(FileUpload.class,15,TimeUnit.MINUTES).setConstraints(newConstraints.Builder().setRequiredNetworkType(NetworkType.METERED).build());PeriodicWorkRequestwifiWork=wifiWorkBuilder.build();WorkManager.getInstan