Continue supporting old APIs.

vector/src/main/java/im/vector/riotx/core/files/FileSaver.kt

@@ -16,8 +16,10 @@
 
 package im.vector.riotx.core.files
 
+import android.app.DownloadManager
 import android.content.ContentValues
 import android.content.Context
+import android.os.Build
 import android.provider.MediaStore
 import androidx.annotation.WorkerThread
 import arrow.core.Try
@@ -56,6 +58,7 @@ fun addEntryToDownloadManager(context: Context,
                               title: String = file.name,
                               description: String = file.name) {
     try {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
             val contentValues = ContentValues().apply {
                 put(MediaStore.Downloads.TITLE, title)
                 put(MediaStore.Downloads.DISPLAY_NAME, description)
@@ -67,6 +70,11 @@ fun addEntryToDownloadManager(context: Context,
                     outputStream.sink().buffer().write(file.inputStream().use { it.readBytes() })
                 }
             }
+        } else {
+            val downloadManager = context.getSystemService(Context.DOWNLOAD_SERVICE) as DownloadManager?
+            @Suppress("DEPRECATION")
+            downloadManager?.addCompletedDownload(title, description, true, mimeType, file.absolutePath, file.length(), true)
+        }
     } catch (e: Exception) {
         Timber.e(e, "## addEntryToDownloadManager(): Exception")
     }