PagingDataAdapter class 在调用 adapter.submitData 方法后未执行

Question

我想在我的 android 应用程序中试用 Paging 3。它成功，直到我从 class PagingDataSource 获得我的 PagingData<*> 列表。但是每次我调用 adapter.submitData(it) 时，我的适配器 class 都不会执行。请帮忙，我的错误在哪里？非常感谢。

这是我要调用的代码homeFragment.kt

private lateinit var webinarListAdapter: myAdapter
    fun initAdapter() {
        webinarAdapter = myAdapter()
        with(recyclerView) {
            layoutManager = LinearLayoutManager(requireContext())
            adapter = webinarAdapter
            adapter = webinarAdapter.withLoadStateHeaderAndFooter(
                header = WebinarLoadStateAdapter { webinarAdapter.retry() },
                footer = WebinarLoadStateAdapter { webinarAdapter.retry() }
            )
        }
       lifecycleScope.launch {
            viewModel.user.collectLatest {
                webinarAdapter.submitData(it)
            }
       }
}```


MyAdapter.kt class

```class myAdapter: PagingDataAdapter<User, UserHolder>(DIFF_CALLBACK) {
  
    override fun onBindViewHolder(holder: UserHolder, position: Int) {
        Log.e(TAG, "onBindViewHolder")
        holder.onBind(getItem(position)!!)
    }

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): UserHolder {
        return UserHolder.create(parent)
    }

    companion object {
        private val DIFF_CALLBACK = object : DiffUtil.ItemCallback<User>() {
            override fun areItemsTheSame(oldItem: User, newItem: User) =
                oldItem.id == newItem.id

            override fun areContentsTheSame(oldItem: Taklim, newItem: Taklim) = oldItem == newItem
        }
    }
}```

Answer 1

将此添加到您的适配器

fun submitList(list: List<T>) {
    yourlist.submitList(list)
    notifyDataSetChanged()
}

Answer 2

经过越来越多的调试，我知道我的错误在哪里。我的错误是在我的分页数据源上执行了捕获异常。所以我的适配器没有执行，我的视图模型没有收到任何数据。谢谢！

PagingDataAdapter class 在调用 adapter.submitData 方法后未执行

PagingDataAdapter class not executed after called adapter.submitData method

android

kotlin

android-paging-3