up

app/src/main/java/io/legado/app/ui/changesource/ChangeSourceDialog.kt

@@ -8,7 +8,6 @@ import android.view.ViewGroup
 import android.widget.LinearLayout
 import androidx.appcompat.widget.SearchView
 import androidx.fragment.app.DialogFragment
-import androidx.lifecycle.Observer
 import androidx.recyclerview.widget.DividerItemDecoration
 import androidx.recyclerview.widget.LinearLayoutManager
 import io.legado.app.R
@@ -18,7 +17,7 @@ import io.legado.app.utils.getViewModel
 import kotlinx.android.synthetic.main.dialog_change_source.*
 
 
-class ChangeSourceDialog : DialogFragment() {
+class ChangeSourceDialog : DialogFragment(), ChangeSourceViewModel.CallBack {
 
     companion object {
         const val tag = "changeSourceDialog"
@@ -91,9 +90,7 @@ class ChangeSourceDialog : DialogFragment() {
         recycler_view.layoutManager = LinearLayoutManager(context)
         recycler_view.addItemDecoration(DividerItemDecoration(requireContext(), LinearLayout.VERTICAL))
         recycler_view.adapter = changeSourceAdapter
-        viewModel.searchBookData.observe(viewLifecycleOwner, Observer {
+        viewModel.callBack = this
-            changeSourceAdapter.addItems(it)
-        })
     }
 
     private fun initSearchView() {
@@ -119,6 +116,9 @@ class ChangeSourceDialog : DialogFragment() {
         })
     }
 
+    override fun adapter(): ChangeSourceAdapter {
+        return changeSourceAdapter
+    }
 
     interface CallBack {
         fun changeTo(book: Book)

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

@@ -1,7 +1,7 @@
 package io.legado.app.ui.changesource
 
 import android.app.Application
-import androidx.lifecycle.MutableLiveData
+import androidx.recyclerview.widget.DiffUtil
 import io.legado.app.App
 import io.legado.app.R
 import io.legado.app.base.BaseViewModel
@@ -12,24 +12,27 @@ import kotlinx.coroutines.Dispatchers
 import org.jetbrains.anko.debug
 
 class ChangeSourceViewModel(application: Application) : BaseViewModel(application) {
+    var callBack: CallBack? = null
     var curBookUrl = ""
     var name: String = ""
     var author: String = ""
-    val searchBookData = MutableLiveData<List<SearchBook>>()
     private val searchBooks = linkedSetOf<SearchBook>()
 
     fun initData() {
         execute {
             App.db.searchBookDao().getByNameAuthorEnable(name, author).let {
                 searchBooks.addAll(it)
-                searchBookData.postValue(it)
+                upAdapter()
                 search()
             }
         }
     }
 
     fun upAdapter() {
-
+        val diffResult = DiffUtil.calculateDiff(DiffCallBack(arrayListOf(), searchBooks.toList()))
+        callBack?.adapter()?.let {
+            diffResult.dispatchUpdatesTo(it)
+        }
     }
 
     fun search() {
@@ -75,6 +78,7 @@ class ChangeSourceViewModel(application: Application) : BaseViewModel(applicatio
                         book.latestChapterTitle = chapter.title
                         val searchBook = book.toSearchBook()
                         searchBooks.add(searchBook)
+                        upAdapter()
                         App.db.searchBookDao().insert(searchBook)
                     }
                 }.onError {
@@ -85,9 +89,13 @@ class ChangeSourceViewModel(application: Application) : BaseViewModel(applicatio
 
     fun screen(key: String?) {
         if (key.isNullOrEmpty()) {
-            searchBookData.postValue(searchBooks.toList())
+
         } else {
 
         }
     }
+
+    interface CallBack {
+        fun adapter(): ChangeSourceAdapter
+    }
 }