Androidアーキテクチャには、新しいコンポーネント WorkManager があります。
例 から、
class CompressWorker(context : Context, params : WorkerParameters)
: Worker(context, params) {
override fun doWork(): Result {
// Do the work here--in this case, compress the stored images.
// In this example no parameters are passed; the task is
// assumed to be "compress the whole library."
myCompress()
// Indicate success or failure with your return value:
return Result.SUCCESS
// (Returning RETRY tells WorkManager to try this task again
// later; FAILURE says not to try again.)
}
}
val compressionWork = OneTimeWorkRequestBuilder<CompressWorker>().build()
コンストラクターまたはWorker
のパラメーターを受け入れるdoWork
を作成するにはどうすればよいですか?
setInputData
メソッドを使用して、Bundleと同様にデータを送信できます。
/*** Logic to set Data while creating worker **/
val compressionWork = OneTimeWorkRequest.Builder(CompressWorker::class.Java)
val data = Data.Builder()
//Add parameter in Data class. just like bundle. You can also add Boolean and Number in parameter.
data.putString("file_path", "put_file_path_here")
//Set Input Data
compressionWork.setInputData(data.build())
//enque worker
WorkManager.getInstance().enqueue(compressionWork.build())
/*** Logic to get Data ***/
class CompressWorker(context : Context, params : WorkerParameters)
: Worker(context, params) {
override fun doWork(): Result {
//get Input Data back using "inputData" variable
val filePath = inputData.getString("file_path")
// Do the work here--in this case, compress the stored images.
// In this example no parameters are passed; the task is
// assumed to be "compress the whole library."
myCompress()
// Indicate success or failure with your return value:
return Result.SUCCESS
// (Returning RETRY tells WorkManager to try this task again
// later; FAILURE says not to try again.)
}
}
詳細については、こちらをご覧ください link 。
Javaの場合:
次のようにパラメーターを渡します。
Constraints.Builder builder = new Constraints.Builder()
.setRequiredNetworkType(NetworkType.CONNECTED);
// Passing params
Data.Builder data = new Data.Builder();
data.putString("SyncMaster", syncModuleName);
OneTimeWorkRequest syncWorkRequest =
new OneTimeWorkRequest.Builder(SyncWorker.class)
.addTag("Sync")
.setInputData(data.build())
.setConstraints(builder.build())
.build();
WorkManager.getInstance().enqueue(syncWorkRequest);
次のように取得できます。
public class SyncWorker extends Worker {
private static final String TAG = "MyWorker";
public SyncWorker(@NonNull Context context, @NonNull WorkerParameters workerParams) {
super(context, workerParams);
mContext = context;
}
@NonNull
@Override
public Result doWork() {
Log.d(TAG, "doWork for Sync");
String syncTable = getInputData().getString("SyncMaster");
return Result.success();
}
}
それが明らかに役立つことを願っています。