feat: 优化代码

app/src/main/java/io/legado/app/ui/download/DownloadAdapter.kt

@@ -10,7 +10,6 @@ import io.legado.app.data.entities.BookChapter
 import io.legado.app.service.help.Download
 import kotlinx.android.synthetic.main.item_download.view.*
 import org.jetbrains.anko.sdk27.listeners.onClick
-import org.jetbrains.anko.toast
 
 
 class DownloadAdapter(context: Context, private val callBack: CallBack) :
@@ -53,14 +52,7 @@ class DownloadAdapter(context: Context, private val callBack: CallBack) :
                 }
             }
             tv_export.onClick {
-                getItem(holder.layoutPosition)?.let {
-                    val cacheSize = cacheChapters[it.bookUrl]?.size ?: 0
-                    if (cacheSize < it.totalChapterNum) {
-                        context.toast("未下载完成")
-                    } else {
-                        callBack.export(holder.layoutPosition)
-                    }
-                }
+                callBack.export(holder.layoutPosition)
             }
         }
     }