优化

app/src/main/java/io/legado/app/ui/main/bookshelf/books/BooksFragment.kt

@@ -2,6 +2,7 @@ package io.legado.app.ui.main.bookshelf.books
 
 import android.os.Bundle
 import android.view.View
+import androidx.core.view.isGone
 import androidx.lifecycle.LiveData
 import androidx.recyclerview.widget.DiffUtil
 import androidx.recyclerview.widget.GridLayoutManager
@@ -23,8 +24,12 @@ import io.legado.app.ui.audio.AudioPlayActivity
 import io.legado.app.ui.book.info.BookInfoActivity
 import io.legado.app.ui.book.read.ReadBookActivity
 import io.legado.app.ui.main.MainViewModel
-import io.legado.app.utils.*
+import io.legado.app.utils.getPrefInt
+import io.legado.app.utils.getViewModelOfActivity
+import io.legado.app.utils.observeEvent
+import io.legado.app.utils.startActivity
 import kotlinx.android.synthetic.main.fragment_books.*
+import kotlinx.android.synthetic.main.view_empty.*
 import org.jetbrains.anko.startActivity
 import kotlin.math.max
 
@@ -55,6 +60,7 @@ class BooksFragment : BaseFragment(R.layout.fragment_books),
             position = it.getInt("position", 0)
             groupId = it.getLong("groupId", -1)
         }
+        tv_empty_msg.setText(R.string.bookshelf_empty)
         initRecyclerView()
         upRecyclerData()
     }
@@ -104,6 +110,7 @@ class BooksFragment : BaseFragment(R.layout.fragment_books),
             else -> App.db.bookDao().observeByGroup(groupId)
         }
         bookshelfLiveData?.observe(this, { list ->
+            vw_empty.isGone = list.isNotEmpty()
             val books = when (getPrefInt(PreferKey.bookshelfSort)) {
                 1 -> list.sortedByDescending { it.latestChapterTime }
                 2 -> list.sortedBy { it.name }

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

@@ -1,5 +1,10 @@
 <?xml version="1.0" encoding="utf-8"?>
-<androidx.swiperefreshlayout.widget.SwipeRefreshLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <androidx.swiperefreshlayout.widget.SwipeRefreshLayout
         android:id="@+id/refresh_layout"
         android:layout_width="match_parent"
         android:layout_height="match_parent">
@@ -7,6 +12,12 @@
         <androidx.recyclerview.widget.RecyclerView
             android:id="@+id/rv_bookshelf"
             android:layout_width="match_parent"
-        android:layout_height="match_parent" />
+            android:layout_height="match_parent"
+            tools:listitem="@layout/item_bookshelf_list" />
 
     </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
+
+    <include layout="@layout/view_empty" />
+
+</FrameLayout>
+

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

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/vw_empty"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:padding="16dp"
+    android:visibility="gone">
+
+    <TextView
+        android:id="@+id/tv_empty_msg"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:gravity="center"
+        tools:text="TextView"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent">
-
-</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/values-zh-rHK/strings.xml

@@ -45,7 +45,7 @@
     <string name="recent_reading">最近閲讀</string>
     <string name="last_read">最後閲讀</string>
     <string name="update_log">更新日誌</string>
-    <string name="bookshelf_empty">書架還空着，快去添加吧！</string>
+    <string name="bookshelf_empty">書架還空著，先去搜索書籍或從發現裏添加吧！\n如果初次使用請先關註公眾號[開源閱讀]獲取書源！</string>
     <string name="action_search">搜尋</string>
     <string name="action_download">下載</string>
     <string name="layout_list">列表</string>

app/src/main/res/values-zh-rTW/strings.xml

@@ -45,7 +45,7 @@
     <string name="recent_reading">最近閱讀</string>
     <string name="last_read">最後閱讀</string>
     <string name="update_log">更新日誌</string>
-    <string name="bookshelf_empty">書架還空著，先去添加吧！</string>
+    <string name="bookshelf_empty">書架還空著，先去搜索書籍或從發現裏添加吧！\n如果初次使用請先關註公眾號[開源閱讀]獲取書源！</string>
     <string name="action_search">搜尋</string>
     <string name="action_download">下載</string>
     <string name="layout_list">列表</string>

app/src/main/res/values-zh/strings.xml

@@ -47,7 +47,7 @@
     <string name="recent_reading">最近阅读</string>
     <string name="last_read">最后阅读</string>
     <string name="update_log">更新日志</string>
-    <string name="bookshelf_empty">书架还空着，先去添加吧！</string>
+    <string name="bookshelf_empty">书架还空着，先去搜索书籍或从发现里添加吧！\n如果初次使用请先关注公众号[开源阅读]获取书源！</string>
     <string name="action_search">搜索</string>
     <string name="action_download">下载</string>
     <string name="layout_list">列表</string>

app/src/main/res/values/strings.xml

@@ -48,7 +48,7 @@
     <string name="recent_reading">Recent reading</string>
     <string name="last_read">Last reading</string>
     <string name="update_log">What\'s new</string>
-    <string name="bookshelf_empty">Still empty,please add it first.</string>
+    <string name="bookshelf_empty">The bookshelf is still empty. Search for books or add them from discovery! \n if you use it for the first time, please pay attention to the public account [开源阅读] to get the book source!</string>
     <string name="action_search">Search</string>
     <string name="action_download">Download</string>
     <string name="layout_list">List</string>