优化

app/src/main/java/io/legado/app/ui/document/HandleFileActivity.kt

@@ -31,17 +31,17 @@ class HandleFileActivity :
     private var mode = 0
 
     private val selectDocTree =
-        registerForActivityResult(ActivityResultContracts.OpenDocumentTree()) {
-            it ?: let {
+        registerForActivityResult(ActivityResultContracts.OpenDocumentTree()) { uri ->
+            uri ?: let {
                 finish()
                 return@registerForActivityResult
             }
-            if (it.isContentScheme()) {
+            if (uri.isContentScheme()) {
                 val modeFlags =
                     Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION
-                contentResolver.takePersistableUriPermission(it, modeFlags)
+                contentResolver.takePersistableUriPermission(uri, modeFlags)
             }
-            onResult(Intent().setData(it))
+            onResult(Intent().setData(uri))
         }
 
     private val selectDoc = registerForActivityResult(ActivityResultContracts.OpenDocument()) {
@@ -185,10 +185,22 @@ class HandleFileActivity :
     }
 
     override fun onResult(data: Intent) {
-        if (data.data != null) {
+        val uri = data.data
+        uri ?: let {
+            finish()
+            return
+        }
+        if (mode == HandleFileContract.EXPORT) {
+            getFileData()?.let { fileData ->
+                viewModel.saveToLocal(uri, fileData.first, fileData.second) { savedUri ->
+                    setResult(RESULT_OK, Intent().setData(savedUri))
+                    finish()
+                }
+            }
+        } else {
             setResult(RESULT_OK, data)
+            finish()
         }
-        finish()
     }
 
 }

app/src/main/java/io/legado/app/ui/document/HandleFileViewModel.kt

@@ -1,9 +1,15 @@
 package io.legado.app.ui.document
 
 import android.app.Application
+import android.net.Uri
+import androidx.documentfile.provider.DocumentFile
 import androidx.lifecycle.MutableLiveData
 import io.legado.app.base.BaseViewModel
 import io.legado.app.help.DirectLinkUpload
+import io.legado.app.utils.FileUtils
+import io.legado.app.utils.isContentScheme
+import io.legado.app.utils.writeBytes
+import java.io.File
 
 class HandleFileViewModel(application: Application) : BaseViewModel(application) {
 
@@ -20,4 +26,26 @@ class HandleFileViewModel(application: Application) : BaseViewModel(application)
         }
     }
 
+    fun saveToLocal(uri: Uri, fileName: String, data: ByteArray, success: (uri: Uri) -> Unit) {
+        execute {
+            return@execute if (uri.isContentScheme()) {
+                val doc = DocumentFile.fromTreeUri(context, uri)!!
+                doc.findFile(fileName)?.delete()
+                val newDoc = doc.createFile("", fileName)
+                newDoc!!.writeBytes(context, data)
+                newDoc.uri
+            } else {
+                val file = File(uri.path!!)
+                val newFile = FileUtils.createFileIfNotExist(file, fileName)
+                newFile.writeBytes(data)
+                Uri.fromFile(newFile)
+            }
+        }.onError {
+            it.printStackTrace()
+            errorLiveData.postValue(it.localizedMessage)
+        }.onSuccess {
+            success.invoke(it)
+        }
+    }
+
 }