up

app/src/main/java/io/legado/app/ui/main/bookshelf/BookGroupAdapter.kt

@@ -8,6 +8,7 @@ import androidx.recyclerview.widget.DiffUtil
 import androidx.recyclerview.widget.RecyclerView
 import io.legado.app.R
 import io.legado.app.data.entities.BookGroup
+import kotlinx.android.synthetic.main.item_book_group.view.*
 
 class BookGroupAdapter : PagedListAdapter<BookGroup, BookGroupAdapter.MyViewHolder>(DIFF_CALLBACK) {
 
@@ -24,15 +25,37 @@ class BookGroupAdapter : PagedListAdapter<BookGroup, BookGroupAdapter.MyViewHold
         }
     }
 
+    var callBack: CallBack? = null
+    private val defaultGroups = arrayOf(BookGroup(-5, "全部"),
+            BookGroup(-5, "本地"),
+            BookGroup(-5, "音频"))
+
+    override fun getItemCount(): Int {
+        return super.getItemCount() + defaultGroups.size
+    }
+
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MyViewHolder {
         return MyViewHolder(LayoutInflater.from(parent.context).inflate(R.layout.item_book_group, parent, false))
     }
 
     override fun onBindViewHolder(holder: MyViewHolder, position: Int) {
-
+        if (position < defaultGroups.size) {
+            holder.bind(defaultGroups[position], callBack)
+        } else {
+            currentList?.get(position - defaultGroups.size)?.let {
+                holder.bind(it, callBack)
+            }
+        }
     }
 
     class MyViewHolder(view: View) : RecyclerView.ViewHolder(view) {
 
+        fun bind(bookGroup: BookGroup, callBack: CallBack?) = with(itemView) {
+            tv_group.text = bookGroup.groupName
+        }
+    }
+
+    interface CallBack {
+
     }
 }

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

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <TextView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/tv_group"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content"
     android:layout_margin="5dp"