优化

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

@@ -7,6 +7,7 @@ import android.view.View
 import android.view.ViewGroup
 import androidx.fragment.app.DialogFragment
 import androidx.fragment.app.FragmentManager
+import androidx.lifecycle.Observer
 import androidx.recyclerview.widget.GridLayoutManager
 import io.legado.app.R
 import io.legado.app.utils.getViewModel
@@ -46,6 +47,7 @@ class ChangeCoverDialog : DialogFragment(), ChangeCoverViewModel.CallBack {
         container: ViewGroup?,
         savedInstanceState: Bundle?
     ): View? {
+        callBack = activity as? CallBack
         viewModel = getViewModel(ChangeCoverViewModel::class.java)
         viewModel.callBack = this
         return inflater.inflate(R.layout.dialog_change_source, container)
@@ -53,7 +55,9 @@ class ChangeCoverDialog : DialogFragment(), ChangeCoverViewModel.CallBack {
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
-        callBack = activity as? CallBack
+        viewModel.searchStateData.observe(this, Observer {
+            refresh_progress_bar.isAutoLoading = it
+        })
         tool_bar.setTitle(R.string.change_cover_source)
         arguments?.let { bundle ->
             bundle.getString("name")?.let {

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

@@ -1,9 +1,13 @@
 package io.legado.app.ui.changecover
 
 import android.app.Application
+import androidx.lifecycle.MutableLiveData
 import io.legado.app.App
 import io.legado.app.base.BaseViewModel
 import io.legado.app.help.AppConfig
+import io.legado.app.help.coroutine.Coroutine
+import io.legado.app.model.WebBook
+import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.asCoroutineDispatcher
 import java.util.concurrent.Executors
 
@@ -13,17 +17,44 @@ class ChangeCoverViewModel(application: Application) : BaseViewModel(application
     var callBack: CallBack? = null
     var name: String = ""
     var author: String = ""
+    private var task: Coroutine<*>? = null
+    val searchStateData = MutableLiveData<Boolean>()
 
     fun initData() {
         execute {
             App.db.searchBookDao().getEnableHasCover(name, author).let {
                 callBack?.adapter?.setItems(it)
+                search()
             }
         }
     }
 
     fun search() {
+        task = execute {
+            searchStateData.postValue(true)
+            val bookSourceList = App.db.bookSourceDao().allEnabled
+            for (item in bookSourceList) {
+                //task取消时自动取消 by （scope = this@execute）
+                WebBook(item).searchBook(name, scope = this@execute, context = searchPool)
+                    .timeout(30000L)
+                    .onSuccess(Dispatchers.IO) {
+                        if (it != null && it.isNotEmpty()) {
+                            val searchBook = it[0]
+                            if (searchBook.name == name && searchBook.author == author) {
+                                callBack?.adapter?.let { adapter ->
+                                    if (!adapter.getItems().contains(searchBook)) {
+                                        adapter.addItem(searchBook)
+                                    }
+                                }
+                            }
+                        }
+                    }
+            }
+        }
 
+        task?.invokeOnCompletion {
+            searchStateData.postValue(false)
+        }
     }
 
     override fun onCleared() {

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

@@ -7,6 +7,7 @@ import io.legado.app.base.adapter.SimpleRecyclerAdapter
 import io.legado.app.data.entities.SearchBook
 import io.legado.app.help.ImageLoader
 import kotlinx.android.synthetic.main.item_cover.view.*
+import org.jetbrains.anko.sdk27.listeners.onClick
 
 class CoverAdapter(context: Context) :
     SimpleRecyclerAdapter<SearchBook>(context, R.layout.item_cover) {
@@ -19,6 +20,9 @@ class CoverAdapter(context: Context) :
                     .into(iv_cover)
             }
             tv_source.text = item.originName
+            onClick {
+
+            }
         }
     }
 

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

@@ -54,6 +54,7 @@ class ChangeSourceDialog : DialogFragment(),
         container: ViewGroup?,
         savedInstanceState: Bundle?
     ): View? {
+        callBack = activity as? CallBack
         viewModel = getViewModel(ChangeSourceViewModel::class.java)
         viewModel.callBack = this
         return inflater.inflate(R.layout.dialog_change_source, container)
@@ -61,7 +62,6 @@ class ChangeSourceDialog : DialogFragment(),
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
-        callBack = activity as? CallBack
         viewModel.searchStateData.observe(viewLifecycleOwner, Observer {
             refresh_progress_bar.isAutoLoading = it
         })