优化

app/src/main/java/io/legado/app/data/dao/BookSourceDao.kt

@@ -1,10 +1,7 @@
 package io.legado.app.data.dao
 
 import androidx.paging.DataSource
-import androidx.room.Dao
+import androidx.room.*
-import androidx.room.Insert
-import androidx.room.OnConflictStrategy
-import androidx.room.Query
 import io.legado.app.data.entities.BookSource
 
 @Dao
@@ -18,4 +15,7 @@ interface BookSourceDao {
 
     @Insert(onConflict = OnConflictStrategy.REPLACE)
     fun insert(bookSource: BookSource): Long
+
+    @Update
+    fun update(vararg bookSource: BookSource)
 }

app/src/main/java/io/legado/app/ui/main/booksource/BookSourceAdapter.kt

@@ -60,7 +60,7 @@ class BookSourceAdapter : PagedListAdapter<BookSource, BookSourceAdapter.MyViewH
                 callBack?.update(bookSource)
             }
             iv_more.setOnClickListener{
-                val popupMenu = PopupMenu(context, this)
+                val popupMenu = PopupMenu(context, iv_more)
                 popupMenu.menu.add(Menu.NONE, R.id.menu_edit, Menu.NONE, R.string.edit)
                 popupMenu.menu.add(Menu.NONE, R.id.menu_del, Menu.NONE, R.string.delete)
                 popupMenu.menu.add(Menu.NONE, R.id.menu_top, Menu.NONE, R.string.to_top)

app/src/main/java/io/legado/app/ui/main/booksource/BookSourceFragment.kt

@@ -16,6 +16,8 @@ import io.legado.app.data.entities.BookSource
 import io.legado.app.ui.sourceedit.SourceEditActivity
 import kotlinx.android.synthetic.main.fragment_book_source.*
 import kotlinx.android.synthetic.main.view_titlebar.*
+import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.launch
 import org.jetbrains.anko.startActivity
 
 class BookSourceFragment : BaseFragment(R.layout.fragment_book_source), BookSourceAdapter.CallBack {
@@ -59,7 +61,7 @@ class BookSourceFragment : BaseFragment(R.layout.fragment_book_source), BookSour
     }
 
     override fun update(bookSource: BookSource) {
-        TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
+        GlobalScope.launch { App.db.bookSourceDao().update(bookSource) }
     }
 
     override fun edit(bookSource: BookSource) {

app/src/main/res/layout/item_book_source.xml

@@ -4,7 +4,7 @@
               android:layout_height="wrap_content" xmlns:app="http://schemas.android.com/apk/res-auto"
               android:padding="16dp"
               android:orientation="horizontal"
-              android:layout_gravity="center_vertical">
+              android:gravity="center_vertical">
 
     <io.legado.app.lib.theme.view.ATECheckBox
             android:id="@+id/cb_book_source"
@@ -23,13 +23,12 @@
 
     <ImageView
             android:id="@+id/iv_more"
-            android:layout_width="40dp"
+            android:layout_width="24dp"
-            android:layout_height="40dp"
+            android:layout_height="24dp"
             android:layout_gravity="center"
-            android:layout_weight="1"
             android:background="@drawable/bg_ib_pre_round"
+            android:layout_margin="6dp"
             android:contentDescription="@string/to_top"
-            android:padding="8dp"
             android:src="@drawable/ic_more_vert"
             app:tint="@color/tv_text_default"/>
 </LinearLayout>