优化代码

app/src/main/java/io/legado/app/ui/book/changecover/ChangeCoverDialog.kt

@@ -10,7 +10,6 @@ import androidx.fragment.app.FragmentManager
 import androidx.recyclerview.widget.GridLayoutManager
 import io.legado.app.R
 import io.legado.app.base.BaseDialogFragment
-import io.legado.app.constant.Theme
 import io.legado.app.databinding.DialogChangeCoverBinding
 import io.legado.app.lib.theme.primaryColor
 import io.legado.app.utils.applyTint
@@ -89,7 +88,7 @@ class ChangeCoverDialog : BaseDialogFragment(),
             } else {
                 stopMenuItem?.setIcon(R.drawable.ic_refresh_black_24dp)
             }
-            binding.toolBar.menu.applyTint(requireContext(), Theme.getTheme())
+            binding.toolBar.menu.applyTint(requireContext())
         })
         viewModel.searchBooksLiveData.observe(viewLifecycleOwner, {
             adapter.setItems(it)

app/src/main/java/io/legado/app/ui/book/changecover/ChangeCoverViewModel.kt

@@ -2,6 +2,8 @@ package io.legado.app.ui.book.changecover
 
 import android.app.Application
 import android.os.Bundle
+import android.os.Handler
+import android.os.Looper
 import androidx.lifecycle.MutableLiveData
 import io.legado.app.App
 import io.legado.app.base.BaseViewModel
@@ -14,19 +16,23 @@ import io.legado.app.model.webBook.WebBook
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.ExecutorCoroutineDispatcher
 import kotlinx.coroutines.asCoroutineDispatcher
+import java.util.concurrent.CopyOnWriteArraySet
 import java.util.concurrent.Executors
 import kotlin.math.min
 
 class ChangeCoverViewModel(application: Application) : BaseViewModel(application) {
     private val threadCount = AppConfig.threadCount
     private var searchPool: ExecutorCoroutineDispatcher? = null
+    val handler = Handler(Looper.getMainLooper())
     var name: String = ""
     var author: String = ""
     private var tasks = CompositeCoroutine()
     private var bookSourceList = arrayListOf<BookSource>()
     val searchStateData = MutableLiveData<Boolean>()
     val searchBooksLiveData = MutableLiveData<List<SearchBook>>()
-    private val searchBooks = ArrayList<SearchBook>()
+    private val searchBooks = CopyOnWriteArraySet<SearchBook>()
+    private val sendRunnable = Runnable { upAdapter() }
+    private var postTime = 0L
 
     @Volatile
     private var searchIndex = -1
@@ -51,16 +57,27 @@ class ChangeCoverViewModel(application: Application) : BaseViewModel(application
         execute {
             App.db.searchBookDao.getEnableHasCover(name, author).let {
                 searchBooks.addAll(it)
+                searchBooksLiveData.postValue(searchBooks.toList())
                 if (it.size <= 1) {
-                    searchBooksLiveData.postValue(searchBooks)
                     startSearch()
-                } else {
-                    searchBooksLiveData.postValue(searchBooks)
                 }
             }
         }
     }
 
+    @Synchronized
+    private fun upAdapter() {
+        if (System.currentTimeMillis() >= postTime + 500) {
+            handler.removeCallbacks(sendRunnable)
+            postTime = System.currentTimeMillis()
+            val books = searchBooks.toList()
+            searchBooksLiveData.postValue(books.sortedBy { it.originOrder })
+        } else {
+            handler.removeCallbacks(sendRunnable)
+            handler.postDelayed(sendRunnable, 500)
+        }
+    }
+
     private fun startSearch() {
         execute {
             bookSourceList.clear()
@@ -93,7 +110,7 @@ class ChangeCoverViewModel(application: Application) : BaseViewModel(application
                             App.db.searchBookDao.insert(searchBook)
                             if (!searchBooks.contains(searchBook)) {
                                 searchBooks.add(searchBook)
-                                searchBooksLiveData.postValue(searchBooks)
+                                upAdapter()
                             }
                         }
                     }
@@ -121,6 +138,7 @@ class ChangeCoverViewModel(application: Application) : BaseViewModel(application
             startSearch()
         } else {
             tasks.clear()
+            searchStateData.postValue(false)
         }
     }
 

app/src/main/java/io/legado/app/ui/book/changecover/CoverAdapter.kt

@@ -34,12 +34,10 @@ class CoverAdapter(context: Context, val callBack: CallBack) :
         binding: ItemCoverBinding,
         item: SearchBook,
         payloads: MutableList<Any>
-    ) {
-        binding.apply {
+    ) = with(binding) {
         ivCover.load(item.coverUrl, item.name, item.author)
         tvSource.text = item.originName
     }
-    }
 
     override fun registerListener(holder: ItemViewHolder, binding: ItemCoverBinding) {
         holder.itemView.apply {

app/src/main/java/io/legado/app/ui/book/changesource/ChangeSourceViewModel.kt

@@ -66,11 +66,9 @@ class ChangeSourceViewModel(application: Application) : BaseViewModel(applicatio
             upAdapter()
             App.db.searchBookDao.getChangeSourceSearch(name, author, searchGroup).let {
                 searchBooks.addAll(it)
+                searchBooksLiveData.postValue(searchBooks.toList())
                 if (it.size <= 1) {
-                    upAdapter()
                     startSearch()
-                } else {
-                    upAdapter()
                 }
             }
         }
@@ -85,7 +83,7 @@ class ChangeSourceViewModel(application: Application) : BaseViewModel(applicatio
             searchBooksLiveData.postValue(books.sortedBy { it.originOrder })
         } else {
             handler.removeCallbacks(sendRunnable)
-            handler.postDelayed(sendRunnable, 500 - System.currentTimeMillis() + postTime)
+            handler.postDelayed(sendRunnable, 500)
         }
     }