feat: 优化代码

app/src/main/java/io/legado/app/ui/chapterlist/ChapterListAdapter.kt

@@ -17,7 +17,7 @@ import org.jetbrains.anko.sdk27.listeners.onClick
 class ChapterListAdapter(context: Context, val callback: Callback) :
     SimpleRecyclerAdapter<BookChapter>(context, R.layout.item_chapter_list) {
 
-    val cacheFileNames = arrayListOf<String>()
+    val cacheFileNames = hashSetOf<String>()
 
     override fun convert(holder: ItemViewHolder, item: BookChapter, payloads: MutableList<Any>) {
         with(holder.itemView) {

app/src/main/java/io/legado/app/ui/chapterlist/ChapterListFragment.kt

@@ -9,6 +9,7 @@ import androidx.lifecycle.Observer
 import io.legado.app.App
 import io.legado.app.R
 import io.legado.app.base.VMBaseFragment
+import io.legado.app.constant.EventBus
 import io.legado.app.data.entities.Book
 import io.legado.app.data.entities.BookChapter
 import io.legado.app.help.BookHelp
@@ -16,6 +17,7 @@ import io.legado.app.lib.theme.backgroundColor
 import io.legado.app.ui.widget.recycler.UpLinearLayoutManager
 import io.legado.app.utils.getVerticalDivider
 import io.legado.app.utils.getViewModelOfActivity
+import io.legado.app.utils.observeEvent
 import kotlinx.android.synthetic.main.fragment_chapter_list.*
 import kotlinx.coroutines.Dispatchers.IO
 import kotlinx.coroutines.Dispatchers.Main
@@ -78,10 +80,6 @@ class ChapterListFragment : VMBaseFragment<ChapterListViewModel>(R.layout.fragme
         }
     }
 
-    override fun observeLiveBus() {
-        super.observeLiveBus()
-    }
-
     private fun initDoc() {
         tocLiveData?.removeObservers(this@ChapterListFragment)
         tocLiveData = App.db.bookChapterDao().observeByBook(viewModel.bookUrl)
@@ -100,6 +98,17 @@ class ChapterListFragment : VMBaseFragment<ChapterListViewModel>(R.layout.fragme
         }
     }
 
+    override fun observeLiveBus() {
+        observeEvent<BookChapter>(EventBus.SAVE_CONTENT) { chapter ->
+            book?.bookUrl?.let { bookUrl ->
+                if (chapter.bookUrl == bookUrl) {
+                    adapter.cacheFileNames.add(BookHelp.formatChapterName(chapter))
+                    adapter.notifyItemRangeChanged(0, adapter.getActualItemCount(), true)
+                }
+            }
+        }
+    }
+
     override fun startChapterListSearch(newText: String?) {
         if (newText.isNullOrBlank()) {
             initDoc()