优化

app/src/main/java/io/legado/app/ui/book/arrange/ArrangeBookActivity.kt

@@ -64,5 +64,20 @@ class ArrangeBookActivity : VMBaseActivity<ArrangeBookViewModel>(R.layout.activi
         })
     }
 
+    override fun upSelectCount() {
+        if (adapter.selectedBooks.size == 0) {
+            cb_selected_all.isChecked = false
+        } else {
+            cb_selected_all.isChecked = adapter.selectedBooks.size >= adapter.getItems().size
+        }
+        //重置全选的文字
+        if (cb_selected_all.isChecked) {
+            cb_selected_all.setText(R.string.cancel)
+        } else {
+            cb_selected_all.setText(R.string.select_all)
+        }
+        tv_select_count.text =
+            getString(R.string.select_count, adapter.selectedBooks.size, adapter.getItems().size)
+    }
 
 }

app/src/main/java/io/legado/app/ui/book/arrange/ArrangeBookAdapter.kt

@@ -7,17 +7,35 @@ import io.legado.app.base.adapter.SimpleRecyclerAdapter
 import io.legado.app.data.entities.Book
 import io.legado.app.data.entities.BookGroup
 import kotlinx.android.synthetic.main.item_arrange_book.view.*
+import org.jetbrains.anko.sdk27.listeners.onClick
 
 
 class ArrangeBookAdapter(context: Context, val callBack: CallBack) :
     SimpleRecyclerAdapter<Book>(context, R.layout.item_arrange_book) {
 
+    val selectedBooks: ArrayList<String> = arrayListOf()
 
     override fun convert(holder: ItemViewHolder, item: Book, payloads: MutableList<Any>) {
         with(holder.itemView) {
             tv_name.text = item.name
             tv_author.text = context.getString(R.string.author_show, item.author)
             tv_group.text = getGroupName(item.group)
+            checkbox.isChecked = selectedBooks.contains(item.bookUrl)
+            checkbox.onClick {
+                if (checkbox.isChecked) {
+                    selectedBooks.add(item.bookUrl)
+                } else {
+                    selectedBooks.remove(item.bookUrl)
+                }
+            }
+            onClick {
+                checkbox.isChecked = !checkbox.isChecked
+                if (checkbox.isChecked) {
+                    selectedBooks.add(item.bookUrl)
+                } else {
+                    selectedBooks.remove(item.bookUrl)
+                }
+            }
         }
     }
 
@@ -32,5 +50,6 @@ class ArrangeBookAdapter(context: Context, val callBack: CallBack) :
 
     interface CallBack {
         val groupList: List<BookGroup>
+        fun upSelectCount()
     }
 }