diff --git a/app/src/main/java/io/legado/app/constant/AppConst.kt b/app/src/main/java/io/legado/app/constant/AppConst.kt
index d7018c996..4938d3e15 100644
--- a/app/src/main/java/io/legado/app/constant/AppConst.kt
+++ b/app/src/main/java/io/legado/app/constant/AppConst.kt
@@ -2,6 +2,7 @@ package io.legado.app.constant
 
 import android.annotation.SuppressLint
 import android.provider.Settings
+import io.legado.app.BuildConfig
 import io.legado.app.R
 import splitties.init.appCtx
 import java.text.SimpleDateFormat
@@ -103,4 +104,7 @@ object AppConst {
         var versionCode: Long = 0L,
         var versionName: String = ""
     )
+
+    const val authority = BuildConfig.APPLICATION_ID + ".fileProvider"
+
 }
diff --git a/app/src/main/java/io/legado/app/service/DownloadService.kt b/app/src/main/java/io/legado/app/service/DownloadService.kt
index 134ca55eb..990271808 100644
--- a/app/src/main/java/io/legado/app/service/DownloadService.kt
+++ b/app/src/main/java/io/legado/app/service/DownloadService.kt
@@ -12,7 +12,6 @@ import android.os.Looper
 import androidx.core.app.NotificationCompat
 import androidx.core.content.FileProvider
 import androidx.core.os.bundleOf
-import io.legado.app.BuildConfig
 import io.legado.app.R
 import io.legado.app.base.BaseService
 import io.legado.app.constant.AppConst
@@ -133,14 +132,9 @@ class DownloadService : BaseService() {
             intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
 
             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {   //7.0版本以上
-                val uriForFile: Uri =
-                    FileProvider.getUriForFile(
-                        this,
-                        "${BuildConfig.APPLICATION_ID}.fileProvider",
-                        file
-                    )
+                val contentUrl = FileProvider.getUriForFile(this, AppConst.authority, file)
                 intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
-                intent.setDataAndType(uriForFile, "application/vnd.android.package-archive")
+                intent.setDataAndType(contentUrl, "application/vnd.android.package-archive")
             } else {
                 val uri: Uri = Uri.fromFile(file)
                 intent.setDataAndType(uri, "application/vnd.android.package-archive")
diff --git a/app/src/main/java/io/legado/app/ui/book/source/manage/BookSourceViewModel.kt b/app/src/main/java/io/legado/app/ui/book/source/manage/BookSourceViewModel.kt
index 92fb7e4fa..1432429ee 100644
--- a/app/src/main/java/io/legado/app/ui/book/source/manage/BookSourceViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/book/source/manage/BookSourceViewModel.kt
@@ -5,8 +5,8 @@ import android.content.Intent
 import android.text.TextUtils
 import androidx.core.content.FileProvider
 import androidx.documentfile.provider.DocumentFile
-import io.legado.app.BuildConfig
 import io.legado.app.base.BaseViewModel
+import io.legado.app.constant.AppConst
 import io.legado.app.constant.AppPattern
 import io.legado.app.data.appDb
 import io.legado.app.data.entities.BookSource
@@ -164,14 +164,12 @@ class BookSourceViewModel(application: Application) : BaseViewModel(application)
 
     fun shareSelection(sources: List<BookSource>, success: ((intent: Intent) -> Unit)) {
         execute {
+            val tmpSharePath = "${context.filesDir}/shareBookSource.json"
+            FileUtils.delete(tmpSharePath)
             val intent = Intent(Intent.ACTION_SEND)
-            val file = FileUtils.createFileWithReplace("${context.filesDir}/shareBookSource.json")
+            val file = FileUtils.createFileWithReplace(tmpSharePath)
             file.writeText(GSON.toJson(sources))
-            val fileUri = FileProvider.getUriForFile(
-                context,
-                BuildConfig.APPLICATION_ID + ".fileProvider",
-                file
-            )
+            val fileUri = FileProvider.getUriForFile(context, AppConst.authority, file)
             intent.type = "text/*"
             intent.putExtra(Intent.EXTRA_STREAM, fileUri)
             intent.flags = Intent.FLAG_GRANT_READ_URI_PERMISSION
diff --git a/app/src/main/java/io/legado/app/ui/rss/source/manage/RssSourceViewModel.kt b/app/src/main/java/io/legado/app/ui/rss/source/manage/RssSourceViewModel.kt
index a89dc2e7f..408ca10f8 100644
--- a/app/src/main/java/io/legado/app/ui/rss/source/manage/RssSourceViewModel.kt
+++ b/app/src/main/java/io/legado/app/ui/rss/source/manage/RssSourceViewModel.kt
@@ -5,8 +5,8 @@ import android.content.Intent
 import android.text.TextUtils
 import androidx.core.content.FileProvider
 import androidx.documentfile.provider.DocumentFile
-import io.legado.app.BuildConfig
 import io.legado.app.base.BaseViewModel
+import io.legado.app.constant.AppConst
 import io.legado.app.data.appDb
 import io.legado.app.data.entities.RssSource
 import io.legado.app.help.DefaultData
@@ -106,14 +106,12 @@ class RssSourceViewModel(application: Application) : BaseViewModel(application)
 
     fun shareSelection(sources: List<RssSource>, success: ((intent: Intent) -> Unit)) {
         execute {
+            val tmpSharePath = "${context.filesDir}/shareRssSource.json"
+            FileUtils.delete(tmpSharePath)
             val intent = Intent(Intent.ACTION_SEND)
-            val file = FileUtils.createFileWithReplace("${context.filesDir}/shareRssSource.json")
+            val file = FileUtils.createFileWithReplace(tmpSharePath)
             file.writeText(GSON.toJson(sources))
-            val fileUri = FileProvider.getUriForFile(
-                context,
-                BuildConfig.APPLICATION_ID + ".fileProvider",
-                file
-            )
+            val fileUri = FileProvider.getUriForFile(context, AppConst.authority, file)
             intent.type = "text/*"
             intent.putExtra(Intent.EXTRA_STREAM, fileUri)
             intent.flags = Intent.FLAG_GRANT_READ_URI_PERMISSION
diff --git a/app/src/main/java/io/legado/app/utils/ContextExtensions.kt b/app/src/main/java/io/legado/app/utils/ContextExtensions.kt
index d6644e35a..c1d5e50e3 100644
--- a/app/src/main/java/io/legado/app/utils/ContextExtensions.kt
+++ b/app/src/main/java/io/legado/app/utils/ContextExtensions.kt
@@ -21,8 +21,8 @@ import androidx.core.content.ContextCompat
 import androidx.core.content.FileProvider
 import androidx.core.content.edit
 import androidx.preference.PreferenceManager
-import io.legado.app.BuildConfig
 import io.legado.app.R
+import io.legado.app.constant.AppConst
 import java.io.File
 import java.io.FileOutputStream
 
@@ -158,11 +158,7 @@ fun Context.shareWithQr(text: String, title: String = getString(R.string.share))
             fOut.flush()
             fOut.close()
             file.setReadable(true, false)
-            val contentUri = FileProvider.getUriForFile(
-                this,
-                "${BuildConfig.APPLICATION_ID}.fileProvider",
-                file
-            )
+            val contentUri = FileProvider.getUriForFile(this, AppConst.authority, file)
             val intent = Intent(Intent.ACTION_SEND)
             intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
             intent.putExtra(Intent.EXTRA_STREAM, contentUri)