小编abd*_*lik的帖子

我想开始Django使用Celery. 以下是我的项目的相关部分：

# celery.py

from celery import Celery

# set the default Django settings module for the 'celery' program.
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'bookProjectSetting.settings')

app = Celery('bookProjectSetting')

# Using a string here means the worker doesn't have to serialize
# the configuration object to child processes.
# - namespace='CELERY' means all celery-related configuration keys
#   should have a `CELERY_` prefix.
app.config_from_object('django.conf:settings', namespace='CELERY')

# Load task modules from all registered Django app configs.
app.autodiscover_tasks()


@app.task(bind=True)
def debug_task(self):
    print(f'Request: {self.request!r}')

该 …

我想将 WorkManager 与 Hilt 一起使用。我按照文档并将所需的依赖项集成到我的 gradle 文件中：

// WorkManager library
implementation "androidx.work:work-runtime-ktx:$work_version"
// To use WorkManager with Hilt
implementation "androidx.hilt:hilt-work:workmanager_hilt_version"  
// Annotation processor when using Kotlin
kapt "androidx.hilt:hilt-compiler:workmanager_hilt_version"

请注意，版本是work_version = "2.5.0"和workmanager_hilt_version = "1.0.0-beta01"。

然后我转到我的 Worker 类并按照@HiltWorker文档中的描述输入，但 Android Studio 找不到它：

@HiltWorker
class RefreshDataWorker @AssistedInject constructor(@Assisted appContext: Context, @Assisted params: WorkerParameters): CoroutineWorker(appContext, params) { ...// some doWork() stuff }

@HiltWorker是红色字母，Android Studio 找不到它。为什么 ？做某事。希尔特发生了变化？有没有什么。文档中缺少？

我希望有人能帮帮忙。

在我的 Android 应用程序中，我使用Room本地数据库来存储用户的帐户信息。当我发出一个简单的Room请求来检索Account存储在数据库中的对象时，我收到以下错误消息：

java.lang.IllegalStateException: Cannot access database on the main thread since it may potentially lock the UI for a long period of time.

这是Fragment我发出本地数据库请求的代码：

// AccountInformationFragment.kt


accountDataFragmentViewModel.retrieveAccountData(accountId).observe(viewLifecycleOwner, Observer {
       // do some stuff
    })

在ViewModel课堂上我是这样实现的retrieveAccountData()：

    // AccountInformationFragmentViewModel.kt        

    // used to get the account from the local datasource
    fun retrieveAccountData(id:Long): LiveData<Account>{
        val result = MutableLiveData<Account>()
        viewModelScope.launch {
            val account = authRepository.retrieveAccountData(id)
            result.postValue(account) 
        }
        return result
    }

在Repository …