优化

app/src/main/java/io/legado/app/ui/book/search/SearchActivity.kt

@@ -51,6 +51,7 @@ import kotlinx.coroutines.flow.flowOn
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
 import splitties.init.appCtx
+import kotlin.math.abs
 
 class SearchActivity : VMBaseActivity<ActivityBookSearchBinding, SearchViewModel>(),
     BookAdapter.CallBack,
@@ -235,7 +236,20 @@ class SearchActivity : VMBaseActivity<ActivityBookSearchBinding, SearchViewModel
             override fun onScrolled(recyclerView: RecyclerView, dx: Int, dy: Int) {
                 super.onScrolled(recyclerView, dx, dy)
                 if (!recyclerView.canScrollVertically(1)) {
-                    scrollToBottom()
+                    val layoutManager = recyclerView.layoutManager as LinearLayoutManager
+                    val lastPosition = layoutManager.findLastCompletelyVisibleItemPosition()
+                    if (lastPosition == RecyclerView.NO_POSITION) {
+                        return
+                    }
+                    val lastView = layoutManager.findViewByPosition(lastPosition)
+                    if (lastView == null) {
+                        scrollToBottom()
+                        return
+                    }
+                    val bottom = abs(lastView.bottom - recyclerView.height)
+                    if (bottom <= 1) {
+                        scrollToBottom()
+                    }
                 }
             }
         })
@@ -367,6 +381,7 @@ class SearchActivity : VMBaseActivity<ActivityBookSearchBinding, SearchViewModel
      * 开始搜索
      */
     private fun startSearch() {
+        binding.refreshProgressBar.visible()
         binding.refreshProgressBar.isAutoLoading = true
         binding.fbStop.visible()
     }
@@ -376,6 +391,7 @@ class SearchActivity : VMBaseActivity<ActivityBookSearchBinding, SearchViewModel
      */
     private fun searchFinally() {
         binding.refreshProgressBar.isAutoLoading = false
+        binding.refreshProgressBar.gone()
         binding.fbStop.invisible()
     }