所以我這幾天一直在處理這個問題。我有一個 Data 類，用于將資訊發送回 API。在這種情況下，我有這個 x 數量的欄位。在這些欄位中，存在三個不同型別的 List 欄位。
資料類
data class ApiSurveySiteUpdateBody(
@SerializedName("UserId") val userId: Int,
@SerializedName("SStatusId") val sStatusId: Int,
@SerializedName("SSId") val sSId: Int,
@SerializedName("SPONum") val sPoNum: Int,
@SerializedName("WorkPerformanceTypeId") val workPerformTypeId: Int,
@SerializedName("SSAddressId") val sSAddressId: Int,
@SerializedName("WorktoPerformDate") val workToBePerformedDate: String,
@SerializedName("CableRun") val cableRun: String,
@SerializedName("Entrance") val entranceInfo: String,
@SerializedName("DoorLockHardware") val doorLockHardware: String,
@SerializedName("HandicapOperator") val handicapOperator: String,
@SerializedName("DeviceComplete") val completedPrimaryDeviceList: List<Int>,
@SerializedName("TemplateId") val templateId: Int,
@SerializedName("NewDeviceList") val newDeviceList: List<ApiNewDeviceList> = emptyList(),
@SerializedName("UpdateDeviceList") val updateDeviceList: List<ApiUpdateDeviceList> = emptyList(),
@SerializedName("RemoveDeviceList") val removedDeviceList: List<ApiRemovedDeviceList> = emptyList()
)
轉換器功能
private fun getSomeRequestBody(
dbInfo: DbFormWithEList,
apiSurveySiteMedias: List<ApiSSMediaInfo>
)
: ApiSSUpdateBody {
val updateRequestApi = ApiSSUpdateBody(
userId = dbInfo.sSDbInfo.userId,
sSId = dbInfo.sSDbInfo.sSId,
sStatusId = dbInfo.sStatusDbInfo.sSId,
sPoNum = dbInfo.sSDbInfo.sPoNumber,
workPerformTypeId = dbInfo.sSDbInfo.workPerformTypeId,
sSAddressId = dbInfo.sSDbInfo.sSAddressId,
workToBePerformedDate = dbInfo.sSDbInfo.workToBePerformedDate,
cableRun = dbInfo.sSDbInfo.cableRun,
entranceInfo = dbInfo.sSDbInfo.entranceInfo,
doorLockHardware = dbInfo.sSDbInfo.doorLockHardware,
handicapOperator = dbInfo.sSDbInfo.handicapOperator,
completedPrimaryDeviceList = dbInfo.sSDbInfo.completedPrimaryDeviceList.toIntList(),
templateId = dbInfo.sSDbInfo.templateId,
newDeviceList = List(dbInfo.equipmentList.size) { i -> // “NewDeviceList”
val dbEquipmentInfo = dbInfo.equipmentList[i].sSEquipmentDbInfo
Log.d(TAG, "NewDeviceListDB $dbEquipmentInfo")
val secondaryDeviceCheckedStatus = dbEquipmentInfo.secondaryDeviceCheckedStatus
val isDuplicateDeviceInUpdatePhase = dbEquipmentInfo.isDeviceUpdateMode
if (sDeviceCheckedS == CHECKED_YES && !isDuplicateDUP){
val newDeviceListRequestBody = ApiNewDeviceList(
secondaryDeviceId = dbEquipmentInfo.secondaryDeviceId,
deviceInstanceId = dbEquipmentInfo.deviceInstanceId.toString(),
mediaNameList = dbEquipmentInfo.mediaNames,
deviceSerialNumber = dbEquipmentInfo.deviceSerialNumber,
devicePartNumber = dbEquipmentInfo.devicePartNumber,
deviceManufacturerName = dbEquipmentInfo.deviceManufacturer,
deviceInstallationDate = DateUtil.dateToStringUTCSS(dbEquipmentInfo.deviceInstallationDate),
deviceLocation = dbEquipmentInfo.locationInfo,
deviceTechnicianNotes = dbEquipmentInfo.deviceTechnicianNotes
)
Log.d(TAG, "newDeviceListRequestBodyAPI $newDeviceListRequestBody")
newDeviceListRequestBody
}
else if (sDeviceCheckedS == CHECKED_NO){
apiDeviceListMapperUpdateSS.sendDeviceNotExistsInNewDeviceList(dbEquipmentInfo)
}
else {
apiDeviceListMapperUpdateSS.sendEmptyNewDeviceList()
}
},
updateDeviceList = (List(dbInfo.equipmentList.size) { i ->
val dbEquipmentInfo = dbInfo.equipmentList[i].sSEquipmentDbInfo
Log.d("UpdatingSiteSurvey", "UpdateDeviceListDB $dbEquipmentInfo")
val secondaryDeviceCheckedStatus = dbEquipmentInfo.secondaryDeviceCheckedStatus
val isDuplicateDeviceInUpdatePhase = dbEquipmentInfo.isDeviceUpdateMode
if (secondaryDeviceCheckedStatus == CHECKED_YES && isDuplicateDeviceInUpdatePhase){
val updateDeviceListRequestBody = ApiUpdateDeviceList(
deviceEquipmentId = dbEquipmentInfo.deviceEquipmentId,
secondaryDeviceId = dbEquipmentInfo.secondaryDeviceId,
deviceInstanceId = dbEquipmentInfo.deviceInstanceId.toString(),
deviceSerialNumber = dbEquipmentInfo.deviceSerialNumber,
devicePartNumber = dbEquipmentInfo.devicePartNumber,
deviceManufacturerName = dbEquipmentInfo.deviceManufacturer,
deviceInstallationDate = DateUtil.dateToStringUTCSiteSurvey(dbEquipmentInfo.deviceInstallationDate),
deviceLocation = dbEquipmentInfo.locationInfo,
deviceTechnicianNotes = dbEquipmentInfo.deviceTechnicianNotes
)
Log.d(TAG, "updateDeviceListRequestBodyAPI $updateDeviceListRequestBody")
updateDeviceListRequestBody
} else Unit.apply { } //<- the issue is here
}) as List<ApiUpdateDeviceList>,
removedDeviceList = List(dbInfo.sSDbInfo.removedDeviceList.size) { i ->
val dbRemovedMediaItem = dbInfo.sSDbInfo.removedDeviceList[i]
Log.d(TAG, "RemovedListDB $dbRemovedMediaItem")
if (dbRemovedMediaItem.removedDeviceEquipmentId == null && dbRemovedMediaItem.removedMediaName.isNullOrEmpty()){
val removeDevice = apiDeviceListMapperUpdateSiteSurvey.removeDevice(dbRemovedMediaItem)
Log.d(TAG, "removeDevice $removeDevice")
removeDevice
}else{
val removeMediaForExistingDevice = apiDeviceListMapperUpdateSS.removeMediaForExistingDevice(dbRemovedMediaItem)
Log.d(TAG, "removeMediaForExistingDevice $removeMediaForExistingDevice")
removeMediaForExistingDevice
}
}
)
Log.d(TAG, "MainUpdateRequestAPI $updateRequestApi")
return updateRequestApi
}
目標是讓 else 陳述句突出顯示以向該 updateDeviceList 欄位回傳一個空串列“[]”。我嘗試了幾種方法，但始終無法回傳確切的空串列“[]”。任何幫助將不勝感激。謝謝你。
uj5u.com熱心網友回復：
我不知道您是否希望 (1) 如果迭代中的任何專案未通過檢查，則整個串列無效并變為空if，或者您是否只想 (2) 過濾掉未通過 if 檢查的專案。但這里是我將如何處理每一項任務。
我打破了與單獨的擴展函式 ( )之間DbEquipmentInfo的轉換。不僅要避免代碼重復，還要保持邏輯代碼易于閱讀，并使專案的代碼總體上更易于維護。ApiUpdateDeviceListfun DbEquipmentInfo.toApiUpdateDeviceList(): ApiUpdateDeviceList
1.
val isValid = dbInfo.equipmentList.all { dbEquipmentInfo ->
val secondaryDeviceCheckedStatus = dbEquipmentInfo.secondaryDeviceCheckedStatus
val isDuplicateDeviceInUpdatePhase = dbEquipmentInfo.isDeviceUpdateMode
secondaryDeviceCheckedStatus == CHECKED_YES && isDuplicateDeviceInUpdatePhase
}
updateDeviceList =
if (isValid) dbInfo.equipmentList.map { it.toApiUpdateDeviceList() }
else emptyList()
updateDeviceList = dbInfo.equipmentList.filter { dbEquipmentInfo ->
val secondaryDeviceCheckedStatus = dbEquipmentInfo.secondaryDeviceCheckedStatus
val isDuplicateDeviceInUpdatePhase = dbEquipmentInfo.isDeviceUpdateMode
secondaryDeviceCheckedStatus == CHECKED_YES && isDuplicateDeviceInUpdatePhase
}.map { it.toApiUpdateDeviceList() }
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