Я вставляю данные в базу данных комнаты, полученную из сети.Он не показывает никаких ошибок, и ни одно из приложений не падает, но экран пуст и таблица пуста. Все работает нормально, но когда я использую Stetho Debug Tool и смотрю на таблицу фидов ничего не вставлено, может кто-нибудь понятьэто и поможет мне.А также посмотреть, правильно ли реализованы PageListAdapter и LivePageListBuilder или нет?
1. Данные БД помещения не введены 2. Реализация подкачки
Это метод Дао
//Post feed item
@Insert(onConflict = OnConflictStrategy.IGNORE)
fun insert(feed:feed)
Класс репозитория:
class FeedRepository (
private val feedDao: FeedDao
){
private var lastRequestedItem = 0
private var isRequestInProgress = false
var executor = Executors.newSingleThreadExecutor()
companion object {
lateinit var feedList:List<Feed>
private const val DEFAULT_NETWORK_PAGE_SIZE = 50
private const val DEAULT_DATABASE_PAGE_SIZE = 20
private val apiClient = ApiClient.getApiClient().create(UserClient::class.java)
// For Singleton instantiation
@Volatile private var instance: FeedRepository? = null
fun getInstance(feedDao: FeedDao) =
instance ?: synchronized(this) {
instance ?: FeedRepository(feedDao).also { instance = it }
}
}
fun showFeed():LiveData<PagedList<feed>>{
Timber.d("showFeed() method called")
val dataSourceFactory = feedDao.getAllFeed()
val boundaryCallback = FeedBoundaryCallBack(id = lastRequestedItem)
val builder = LivePagedListBuilder(dataSourceFactory, DEAULT_DATABASE_PAGE_SIZE)
.setBoundaryCallback(boundaryCallback)
.build()
return builder
}
public fun getFeedResponse() {
Timber.i("getFeedResponse()")
if(isRequestInProgress) return
isRequestInProgress = true
val call: Call<FeedResult> = apiClient.getFeed(DEFAULT_NETWORK_PAGE_SIZE,lastRequestedItem)
call.enqueue(object :Callback<FeedResult>{
override fun onFailure(call: Call<FeedResult>?, t: Throwable?) {
Timber.d(t.toString())
}
override fun onResponse(call: Call<FeedResult>?, response: Response<FeedResult>?) {
if(response!!.isSuccessful){
//lastRequestedItem += response?.body()!!.size
feedList = response?.body()!!.feedList
for (i in feedList){
var name = i.username
var media = i.mUrl
var loc = i.location
var like = i.likesCount.toString()
var timeStamp = i.timeStamp
var id = i.id.toLong()
var res:feed = feed(id,name,media,timeStamp,loc,like)
addResponseTODB(res)
}
Timber.i("Successful Response -> Adding to DB")
isRequestInProgress = false
}else{
when(response.code()){
400 -> Timber.d("Not Found 400")
500 -> Timber.d("Not logged in or Server broken")
}
}
}
})
}
private fun addResponseTODB(items:feed) ={
executor.execute( {feedDao.insert(items)})
Timber.d("Feed object Inserted into Database")
}
Адаптер и ViewHolder:
class FeedAdapter : PagedListAdapter<feed,FeedAdapter.ViewHolder>
(FeedDiffCallBack()){
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int):
ViewHolder {
return ViewHolder(
LayoutInflater.from(parent.context)
.inflate(R.layout.feedrow,parent,false)
)
}
override fun onBindViewHolder(holder: ViewHolder, position: Int) {
val feedItem = getItem(position)
if(feedItem != null){
holder.bind(feedItem)
}
}
class ViewHolder(itemView:View):RecyclerView.ViewHolder(itemView) {
//Retrieve data
private val username:TextView = itemView.findViewById(R.id.username_txt)
private val userPic:ImageView = itemView.findViewById(R.id.feedImage)
private val location:TextView = itemView.findViewById(R.id.postLocation)
private val time:TextView = itemView.findViewById(R.id.postTime)
private val post:ImageView = itemView.findViewById(R.id.postImage)
fun bind(feed: feed) = with(itemView){
//TODO:Bind Data with View
if(feed == null) {
post.visibility = View.GONE
}
else{
showFeedData(feed)
}
}
private fun showFeedData(feed: feed) {
username.text = feed.username
userPic.setImageURI(null)
userPic.visibility = View.GONE
location.text = feed.location
time.text = feed.timeStamp.toString()
post.setImageURI(Uri.parse(feed.mUrl))
}
}
}
class FeedDiffCallBack : DiffUtil.ItemCallback<feed>() {
override fun areItemsTheSame(oldItem:feed, newItem: feed): Boolean {
return oldItem?.id == newItem?.id
}
override fun areContentsTheSame(oldItem: feed, newItem: feed): Boolean {
return oldItem == newItem
}
}