do not clear mMedia if the intent came from the gallery itself

app/src/main/kotlin/com/simplemobiletools/gallery/activities/PhotoVideoActivity.kt

@@ -21,6 +21,7 @@ import com.simplemobiletools.gallery.extensions.*
 import com.simplemobiletools.gallery.fragments.PhotoFragment
 import com.simplemobiletools.gallery.fragments.VideoFragment
 import com.simplemobiletools.gallery.fragments.ViewPagerFragment
+import com.simplemobiletools.gallery.helpers.IS_FROM_GALLERY
 import com.simplemobiletools.gallery.helpers.IS_VIEW_INTENT
 import com.simplemobiletools.gallery.helpers.MEDIUM
 import com.simplemobiletools.gallery.models.Medium
@@ -31,6 +32,7 @@ open class PhotoVideoActivity : SimpleActivity(), ViewPagerFragment.FragmentList
     private val STORAGE_PERMISSION = 1
     private var mMedium: Medium? = null
     private var mIsFullScreen = false
+    private var mIsFromGallery = false
     private var mFragment: ViewPagerFragment? = null
 
     lateinit var mUri: Uri
@@ -52,6 +54,7 @@ open class PhotoVideoActivity : SimpleActivity(), ViewPagerFragment.FragmentList
 
     private fun checkIntent(savedInstanceState: Bundle? = null) {
         mUri = intent.data ?: return
+        mIsFromGallery = intent.getBooleanExtra(IS_FROM_GALLERY, false)
 
         if (mUri.scheme == "file") {
             scanPath(mUri.path) {}
@@ -126,6 +129,7 @@ open class PhotoVideoActivity : SimpleActivity(), ViewPagerFragment.FragmentList
     private fun sendViewPagerIntent(path: String) {
         Intent(this, ViewPagerActivity::class.java).apply {
             putExtra(IS_VIEW_INTENT, true)
+            putExtra(IS_FROM_GALLERY, mIsFromGallery)
             putExtra(MEDIUM, path)
             startActivity(this)
         }

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

@@ -160,8 +160,11 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
         }
 
         if (config.isThirdPartyIntent) {
-            mMedia.clear()
             config.isThirdPartyIntent = false
+
+            if (intent.extras == null || !intent.getBooleanExtra(IS_FROM_GALLERY, false)) {
+                mMedia.clear()
+            }
         }
     }
 

app/src/main/kotlin/com/simplemobiletools/gallery/extensions/activity.kt

@@ -24,6 +24,7 @@ import com.simplemobiletools.commons.helpers.*
 import com.simplemobiletools.gallery.BuildConfig
 import com.simplemobiletools.gallery.R
 import com.simplemobiletools.gallery.activities.SimpleActivity
+import com.simplemobiletools.gallery.helpers.IS_FROM_GALLERY
 import com.simplemobiletools.gallery.helpers.NOMEDIA
 import com.simplemobiletools.gallery.helpers.REQUEST_EDIT_IMAGE
 import com.simplemobiletools.gallery.helpers.REQUEST_SET_AS
@@ -91,14 +92,14 @@ fun Activity.setAs(uri: Uri, file: File, showToast: Boolean = true): Boolean {
         addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
         val chooser = Intent.createChooser(this, getString(R.string.set_as))
 
-        if (resolveActivity(packageManager) != null) {
+        success = if (resolveActivity(packageManager) != null) {
             startActivityForResult(chooser, REQUEST_SET_AS)
-            success = true
+            true
         } else {
             if (showToast) {
                 toast(R.string.no_capable_app_found)
             }
-            success = false
+            false
         }
     }
 
@@ -130,6 +131,7 @@ fun Activity.openWith(file: File, forceChooser: Boolean = true) {
         action = Intent.ACTION_VIEW
         setDataAndType(uri, file.getMimeType())
         addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
+        putExtra(IS_FROM_GALLERY, true)
 
         if (resolveActivity(packageManager) != null) {
             val chooser = Intent.createChooser(this, getString(R.string.open_with))

app/src/main/kotlin/com/simplemobiletools/gallery/helpers/Constants.kt

@@ -62,6 +62,7 @@ val GET_ANY_INTENT = "get_any_intent"
 val SET_WALLPAPER_INTENT = "set_wallpaper_intent"
 val DIRECTORIES = "directories2"
 val IS_VIEW_INTENT = "is_view_intent"
+val IS_FROM_GALLERY = "is_from_gallery"
 
 val REQUEST_EDIT_IMAGE = 1
 val REQUEST_SET_AS = 2