up

app/build.gradle

@@ -79,11 +79,12 @@ dependencies {
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
 
     //androidX
-    implementation 'androidx.core:core-ktx:1.2.0-alpha01'
+    implementation 'androidx.core:core-ktx:1.2.0-alpha02'
     implementation 'androidx.appcompat:appcompat:1.1.0-beta01'
     implementation 'androidx.preference:preference:1.1.0-beta01'
     implementation 'androidx.constraintlayout:constraintlayout:2.0.0-beta1'
     implementation 'com.google.android.material:material:1.1.0-alpha07'
+    implementation 'com.google.android:flexbox:1.1.0'
 
     //lifecycle
     def lifecycle_version = '2.0.0'

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

@@ -13,6 +13,9 @@ interface BookSourceDao {
     @Query("select * from book_sources where name like :searchKey or `group` like :searchKey or origin like :searchKey order by customOrder asc")
     fun observeSearch(searchKey: String = ""): DataSource.Factory<Int, BookSource>
 
+    @Query("select * from book_sources where exploreIsEnabled = 1 order by customOrder asc")
+    fun observeFind(): DataSource.Factory<Int, BookSource>
+
     @Query("select * from book_sources where origin = :key")
     fun findByKey(key: String): BookSource?
 

app/src/main/java/io/legado/app/ui/main/findbook/FindBookAdapter.kt

@@ -0,0 +1,42 @@
+package io.legado.app.ui.main.findbook
+
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.paging.PagedListAdapter
+import androidx.recyclerview.widget.DiffUtil
+import androidx.recyclerview.widget.RecyclerView
+import io.legado.app.R
+import io.legado.app.data.entities.BookSource
+import kotlinx.android.synthetic.main.item_find_book.view.*
+
+class FindBookAdapter:PagedListAdapter<BookSource, FindBookAdapter.MyViewHolder>(DIFF_CALLBACK) {
+
+    companion object {
+        var DIFF_CALLBACK = object : DiffUtil.ItemCallback<BookSource>() {
+            override fun areItemsTheSame(oldItem: BookSource, newItem: BookSource): Boolean =
+                oldItem.origin == newItem.origin
+
+            override fun areContentsTheSame(oldItem: BookSource, newItem: BookSource): Boolean =
+                oldItem.origin == newItem.origin
+                        && oldItem.name == newItem.name
+        }
+    }
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MyViewHolder {
+        return MyViewHolder(LayoutInflater.from(parent.context).inflate(R.layout.item_find_book, parent, false))
+    }
+
+    override fun onBindViewHolder(holder: MyViewHolder, position: Int) {
+        currentList?.get(position)?.let {
+            holder.bind(it)
+        }
+    }
+
+    class MyViewHolder(view: View) : RecyclerView.ViewHolder(view) {
+
+        fun bind(bookSource: BookSource) = with(itemView) {
+            tv_name.text = bookSource.name
+        }
+    }
+}

app/src/main/java/io/legado/app/ui/main/findbook/FindBookFragment.kt

@@ -3,18 +3,44 @@ package io.legado.app.ui.main.findbook
 import android.os.Bundle
 import android.view.Menu
 import android.view.View
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.Observer
+import androidx.paging.LivePagedListBuilder
+import androidx.paging.PagedList
+import com.google.android.flexbox.FlexDirection
+import com.google.android.flexbox.FlexboxLayoutManager
+import io.legado.app.App
 import io.legado.app.R
 import io.legado.app.base.BaseFragment
+import io.legado.app.data.entities.Book
+import io.legado.app.data.entities.BookSource
+import kotlinx.android.synthetic.main.fragment_find_book.*
 import kotlinx.android.synthetic.main.view_title_bar.*
 
 class FindBookFragment : BaseFragment(R.layout.fragment_find_book) {
 
+    private lateinit var adapter: FindBookAdapter
+    private var findLiveData:LiveData<PagedList<BookSource>>? = null
+
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         setSupportToolbar(toolbar)
+        initRecyclerView()
+        initData()
     }
 
     override fun onCompatCreateOptionsMenu(menu: Menu) {
         menuInflater.inflate(R.menu.find_book, menu)
     }
 
+    private fun initRecyclerView() {
+        rv_find.layoutManager = FlexboxLayoutManager(context)
+        adapter = FindBookAdapter()
+        rv_find.adapter = adapter
+    }
+
+    private fun initData() {
+        findLiveData?.removeObservers(viewLifecycleOwner)
+        findLiveData = LivePagedListBuilder(App.db.bookSourceDao().observeFind(), 10).build()
+        findLiveData?.observe(viewLifecycleOwner, Observer { adapter.submitList(it) })
+    }
 }

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

@@ -13,5 +13,9 @@
         app:layout_constraintTop_toTopOf="parent"
         app:title="@string/find" />
 
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/rv_find"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent" />
 
 </LinearLayout>

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

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<TextView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/tv_name"
+    android:orientation="vertical"
+    android:layout_width="wrap_content"
+    android:layout_height="wrap_content" />