feat: 优化

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

@@ -63,8 +63,8 @@ class ChangeSourceViewModel(application: Application) : BaseViewModel(applicatio
     @Synchronized
     private fun upAdapter() {
         if (System.currentTimeMillis() > postTime + 500) {
-            postTime = System.currentTimeMillis()
             handler.removeCallbacks(sendRunnable)
+            postTime = System.currentTimeMillis()
             val books = searchBooks.toList()
             searchBooksLiveData.postValue(books.sortedBy { it.originOrder })
         } else {

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

@@ -52,7 +52,6 @@ class SearchActivity : VMBaseActivity<SearchViewModel>(R.layout.activity_book_se
     private var menu: Menu? = null
     private var precisionSearchMenuItem: MenuItem? = null
     private var groups = linkedSetOf<String>()
-    private var refreshTime = System.currentTimeMillis()
 
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         initRecyclerView()
@@ -181,14 +180,13 @@ class SearchActivity : VMBaseActivity<SearchViewModel>(R.layout.activity_book_se
             upGroupMenu()
         })
         viewModel.searchBookLiveData.observe(this, Observer {
-            upSearchItems(it, false)
+            upSearchItems(it)
         })
         viewModel.isSearchLiveData.observe(this, Observer {
             if (it) {
                 startSearch()
             } else {
                 searchFinally()
-                upSearchItems(viewModel.searchBooks, true)
             }
         })
     }
@@ -284,14 +282,11 @@ class SearchActivity : VMBaseActivity<SearchViewModel>(R.layout.activity_book_se
      * 更新搜索结果
      */
     @Synchronized
-    private fun upSearchItems(items: List<SearchBook>, isMandatoryUpdate: Boolean) {
+    private fun upSearchItems(items: List<SearchBook>) {
         val searchItems = ArrayList(items)
-        if (isMandatoryUpdate || System.currentTimeMillis() - refreshTime > 500) {
-            refreshTime = System.currentTimeMillis()
-            val diffResult =
-                DiffUtil.calculateDiff(DiffCallBack(adapter.getItems(), searchItems))
-            adapter.setItems(searchItems, diffResult)
-        }
+        val diffResult =
+            DiffUtil.calculateDiff(DiffCallBack(adapter.getItems(), searchItems))
+        adapter.setItems(searchItems, diffResult)
     }
 
     /**

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

@@ -1,6 +1,7 @@
 package io.legado.app.ui.book.search
 
 import android.app.Application
+import android.os.Handler
 import androidx.lifecycle.MutableLiveData
 import io.legado.app.App
 import io.legado.app.base.BaseViewModel
@@ -12,15 +13,18 @@ import io.legado.app.utils.getPrefBoolean
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.isActive
 
-class SearchViewModel(application: Application) : BaseViewModel(application)
-    , SearchBookModel.CallBack {
+class SearchViewModel(application: Application) : BaseViewModel(application),
+    SearchBookModel.CallBack {
+    val handler = Handler()
     private val searchBookModel = SearchBookModel(this, this)
     var isSearchLiveData = MutableLiveData<Boolean>()
     var searchBookLiveData = MutableLiveData<List<SearchBook>>()
     var searchKey: String = ""
     var isLoading = false
-    var searchBooks = arrayListOf<SearchBook>()
+    private var searchBooks = arrayListOf<SearchBook>()
     private var searchID = 0L
+    private var postTime = 0L
+    private val sendRunnable = Runnable { upAdapter() }
 
     /**
      * 开始搜索
@@ -36,6 +40,17 @@ class SearchViewModel(application: Application) : BaseViewModel(application)
         searchBookModel.search(searchID, searchKey)
     }
 
+    @Synchronized
+    private fun upAdapter() {
+        if (System.currentTimeMillis() > postTime + 500) {
+            handler.removeCallbacks(sendRunnable)
+            postTime = System.currentTimeMillis()
+            searchBookLiveData.postValue(searchBooks)
+        } else {
+            handler.postDelayed(sendRunnable, 500)
+        }
+    }
+
     override fun onSearchStart() {
         isSearchLiveData.postValue(true)
     }
@@ -151,7 +166,7 @@ class SearchViewModel(application: Application) : BaseViewModel(application)
             })
             if (!scope.isActive) return
             searchBooks = copyDataS
-            searchBookLiveData.postValue(copyDataS)
+            upAdapter()
         }
     }