优化代码

app/src/main/java/io/legado/app/base/adapter/InfiniteScrollListener.kt

@@ -1,33 +0,0 @@
-package io.legado.app.base.adapter
-
-import androidx.recyclerview.widget.LinearLayoutManager
-import androidx.recyclerview.widget.RecyclerView
-
-/**
- * Created by Invincible on 2017/12/15.
- *
- * 上拉加载更多
- */
-@Suppress("unused")
-abstract class InfiniteScrollListener : RecyclerView.OnScrollListener() {
-    private val loadMoreRunnable = Runnable { onLoadMore() }
-
-    override fun onScrolled(recyclerView: RecyclerView, dx: Int, dy: Int) {
-//        if (dy < 0 || dataLoading.isDataLoading()) return
-
-        val layoutManager: LinearLayoutManager = recyclerView.layoutManager as LinearLayoutManager
-        val visibleItemCount = recyclerView.childCount
-        val totalItemCount = layoutManager.itemCount
-        val firstVisibleItem = layoutManager.findFirstVisibleItemPosition()
-
-        if (totalItemCount - visibleItemCount <= firstVisibleItem + VISIBLE_THRESHOLD) {
-            recyclerView.post(loadMoreRunnable)
-        }
-    }
-
-    abstract fun onLoadMore()
-
-    companion object {
-        private const val VISIBLE_THRESHOLD = 5
-    }
-}