优化

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

@@ -17,6 +17,9 @@ interface BookDao {
     @Query("SELECT * FROM books WHERE origin = '${BookType.local}' order by durChapterTime desc")
     fun observeLocal(): LiveData<List<Book>>
 
+    @Query("SELECT bookUrl FROM books WHERE origin = '${BookType.local}' order by durChapterTime desc")
+    fun observeLocalUri(): LiveData<List<String>>
+
     @Query("SELECT * FROM books WHERE origin <> '${BookType.local}' and type = 0 order by durChapterTime desc")
     fun observeDownload(): LiveData<List<Book>>
 

app/src/main/java/io/legado/app/ui/importbook/ImportBookActivity.kt

@@ -8,7 +8,10 @@ import android.os.Bundle
 import android.view.Menu
 import android.view.MenuItem
 import androidx.documentfile.provider.DocumentFile
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.Observer
 import androidx.recyclerview.widget.LinearLayoutManager
+import io.legado.app.App
 import io.legado.app.R
 import io.legado.app.base.VMBaseActivity
 import io.legado.app.help.AppConfig
@@ -24,6 +27,7 @@ class ImportBookActivity : VMBaseActivity<ImportBookViewModel>(R.layout.activity
     private var rootDoc: DocumentFile? = null
     private val subDirs = arrayListOf<String>()
     private lateinit var importBookAdapter: ImportBookAdapter
+    private var localUriLiveData: LiveData<List<String>>? = null
 
     override val viewModel: ImportBookViewModel
         get() = getViewModel(ImportBookViewModel::class.java)
@@ -31,6 +35,7 @@ class ImportBookActivity : VMBaseActivity<ImportBookViewModel>(R.layout.activity
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         initView()
         initEvent()
+        initData()
         upRootDoc()
     }
 
@@ -64,6 +69,14 @@ class ImportBookActivity : VMBaseActivity<ImportBookViewModel>(R.layout.activity
         }
     }
 
+    private fun initData() {
+        localUriLiveData?.removeObservers(this)
+        localUriLiveData = App.db.bookDao().observeLocalUri()
+        localUriLiveData?.observe(this, Observer {
+            importBookAdapter.upBookHas(it)
+        })
+    }
+
     private fun upRootDoc() {
         AppConfig.importBookPath?.let {
             val rootUri = Uri.parse(it)

app/src/main/java/io/legado/app/ui/importbook/ImportBookAdapter.kt

@@ -18,16 +18,30 @@ import java.util.*
 class ImportBookAdapter(context: Context, val callBack: CallBack) :
     SimpleRecyclerAdapter<DocumentFile>(context, R.layout.item_import_book) {
 
+    private var localUri = arrayListOf<String>()
+
+    fun upBookHas(uriList: List<String>) {
+        localUri.clear()
+        localUri.addAll(uriList)
+        notifyDataSetChanged()
+    }
 
     override fun convert(holder: ItemViewHolder, item: DocumentFile, payloads: MutableList<Any>) {
         holder.itemView.apply {
             if (item.isDirectory) {
+                iv_icon.setImageResource(R.drawable.ic_folder)
                 iv_icon.visible()
                 cb_select.invisible()
                 ll_brief.gone()
+            } else {
+                if (localUri.contains(item.uri.toString())) {
+                    iv_icon.setImageResource(R.drawable.ic_book_has)
+                    iv_icon.visible()
+                    cb_select.invisible()
                 } else {
                     iv_icon.invisible()
                     cb_select.visible()
+                }
                 ll_brief.visible()
                 tv_tag.text = item.name?.substringAfterLast(".")
                 tv_size.text = StringUtils.toSize(item.length())