Share logic for saving page/cover (#6787)

* Use MediaStore on newer Android Q or newer

* Use flow instead of Observable

* Review comment fixes

* Use suspended function instead of flow

app/src/main/java/eu/kanade/tachiyomi/data/notification/NotificationHandler.kt

@@ -6,8 +6,6 @@ import android.content.Intent
 import android.net.Uri
 import eu.kanade.tachiyomi.extension.util.ExtensionInstaller
 import eu.kanade.tachiyomi.ui.main.MainActivity
-import eu.kanade.tachiyomi.util.storage.getUriCompat
-import java.io.File
 
 /**
  * Class that manages [PendingIntent] of activity's
@@ -32,9 +30,8 @@ object NotificationHandler {
      * @param context context of application
      * @param file file containing image
      */
-    internal fun openImagePendingActivity(context: Context, file: File): PendingIntent {
+    internal fun openImagePendingActivity(context: Context, uri: Uri): PendingIntent {
         val intent = Intent(Intent.ACTION_VIEW).apply {
-            val uri = file.getUriCompat(context)
             setDataAndType(uri, "image/*")
             flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_GRANT_READ_URI_PERMISSION
         }