add Share functionality to images

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

@@ -231,40 +231,7 @@ class MediaActivity : SimpleActivity(), AdapterView.OnItemClickListener, View.On
             false
     }
 
-    private fun shareMedia() {
+    /*private fun prepareForDeleting() {
-        /*val selectedMedia = getSelectedMedia()
-        if (selectedMedia.size <= 1) {
-            shareMedium(selectedMedia[0])
-        } else {
-            shareMedia(selectedMedia)
-        }*/
-    }
-
-    private fun shareMedia(media: List<Medium>) {
-        val shareTitle = resources.getString(R.string.share_via)
-        Intent().apply {
-            action = Intent.ACTION_SEND_MULTIPLE
-            type = "image/* video/*"
-            val uris = ArrayList<Uri>(media.size)
-            media.map { File(it.path) }
-                    .mapTo(uris) { Uri.fromFile(it) }
-
-            putParcelableArrayListExtra(Intent.EXTRA_STREAM, uris)
-            startActivity(Intent.createChooser(this, shareTitle))
-        }
-    }
-
-    /*private fun getSelectedMedia(): List<Medium> {
-        val items = media_grid.checkedItemPositions
-        val cnt = items.size()
-        val media = (0..cnt - 1)
-                .filter { items.valueAt(it) }
-                .map { mMedia[items.keyAt(it)] }
-
-        return media
-    }
-
-    private fun prepareForDeleting() {
         if (isShowingPermDialog(File(mPath)))
             return
 
@@ -423,10 +390,6 @@ class MediaActivity : SimpleActivity(), AdapterView.OnItemClickListener, View.On
 
     /*override fun onActionItemClicked(mode: ActionMode, item: MenuItem): Boolean {
         when (item.itemId) {
-            R.id.cab_share -> {
-                shareMedia()
-                return true
-            }
             R.id.cab_delete -> {
                 prepareForDeleting()
                 mode.finish()

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

@@ -15,6 +15,8 @@ import com.simplemobiletools.gallery.Config
 import com.simplemobiletools.gallery.R
 import com.simplemobiletools.gallery.activities.SimpleActivity
 import com.simplemobiletools.gallery.extensions.beVisibleIf
+import com.simplemobiletools.gallery.extensions.shareMedia
+import com.simplemobiletools.gallery.extensions.shareMedium
 import com.simplemobiletools.gallery.models.Medium
 import kotlinx.android.synthetic.main.photo_video_item.view.*
 import kotlinx.android.synthetic.main.photo_video_tmb.view.*
@@ -45,6 +47,10 @@ class MediaAdapter(val activity: SimpleActivity, val media: MutableList<Medium>,
                     showProperties()
                     true
                 }
+                R.id.cab_share -> {
+                    shareMedia()
+                    return true
+                }
                 else -> false
             }
         }
@@ -75,6 +81,24 @@ class MediaAdapter(val activity: SimpleActivity, val media: MutableList<Medium>,
         }
     }
 
+    private fun shareMedia() {
+        val selections = multiSelector.selectedPositions
+        if (selections.size <= 1) {
+            activity.shareMedium(getSelectedMedia()[0])
+        } else {
+            activity.shareMedia(getSelectedMedia())
+        }
+    }
+
+    private fun getSelectedMedia(): List<Medium> {
+        val selections = multiSelector.selectedPositions
+        val cnt = selections.size
+        val selectedMedia = (0..cnt - 1)
+                .map { media[selections[it]] }
+
+        return selectedMedia
+    }
+
     override fun onBindViewHolder(holder: ViewHolder, position: Int) {
         views.add(holder.bindView(activity, multiSelectorMode, multiSelector, media[position]))
     }

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

@@ -6,6 +6,7 @@ import android.net.Uri
 import com.simplemobiletools.gallery.R
 import com.simplemobiletools.gallery.models.Medium
 import java.io.File
+import java.util.*
 
 fun Activity.shareMedium(medium: Medium) {
     val shareTitle = resources.getString(R.string.share_via)
@@ -18,3 +19,17 @@ fun Activity.shareMedium(medium: Medium) {
         startActivity(Intent.createChooser(this, shareTitle))
     }
 }
+
+fun Activity.shareMedia(media: List<Medium>) {
+    val shareTitle = resources.getString(R.string.share_via)
+    Intent().apply {
+        action = Intent.ACTION_SEND_MULTIPLE
+        type = "image/* video/*"
+        val uris = ArrayList<Uri>(media.size)
+        media.map { File(it.path) }
+                .mapTo(uris) { Uri.fromFile(it) }
+
+        putParcelableArrayListExtra(Intent.EXTRA_STREAM, uris)
+        startActivity(Intent.createChooser(this, shareTitle))
+    }
+}