refresh thumbnail items after rotating

app/src/main/kotlin/com/simplemobiletools/gallery/pro/activities/ViewPagerActivity.kt

@@ -587,8 +587,10 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
         val currPath = getCurrentPath()
         SaveAsDialog(this, currPath, false) {
             handleSAFDialog(it) {
+                toast(R.string.saving)
                 Thread {
                     saveRotatedImageToFile(currPath, it, mRotationDegrees) {
+                        toast(R.string.file_saved)
                         mRotationDegrees = 0
                         invalidateOptionsMenu()
                     }

app/src/main/kotlin/com/simplemobiletools/gallery/pro/adapters/MediaAdapter.kt

@@ -277,11 +277,19 @@ class MediaAdapter(activity: BaseSimpleActivity, var media: MutableList<Thumbnai
     }
 
     private fun rotateSelection(degrees: Int) {
+        activity.toast(R.string.saving)
         Thread {
             val paths = getSelectedPaths()
+            var fileCnt = paths.size
             paths.forEach {
                 activity.saveRotatedImageToFile(it, it, degrees) {
-
+                    fileCnt--
+                    if (fileCnt == 0) {
+                        activity.runOnUiThread {
+                            listener?.refreshItems()
+                            finishActMode()
+                        }
+                    }
                 }
             }
         }.start()

app/src/main/kotlin/com/simplemobiletools/gallery/pro/extensions/Activity.kt

@@ -374,7 +374,6 @@ fun Activity.fixDateTaken(paths: ArrayList<String>, callback: (() -> Unit)? = nu
 }
 
 fun BaseSimpleActivity.saveRotatedImageToFile(oldPath: String, newPath: String, degrees: Int, callback: () -> Unit) {
-    toast(R.string.saving)
     if (oldPath == newPath && oldPath.isJpg()) {
         if (tryRotateByExif(oldPath, degrees, callback)) {
             return
@@ -406,7 +405,6 @@ fun BaseSimpleActivity.saveRotatedImageToFile(oldPath: String, newPath: String,
 
             copyFile(tmpPath, newPath)
             scanPathRecursively(newPath)
-            toast(R.string.file_saved)
             fileRotatedSuccessfully(newPath, oldLastModified)
 
             it.flush()