diff --git a/app/src/main/java/com/horaapps/leafpic/Base/Album.java b/app/src/main/java/com/horaapps/leafpic/Base/Album.java
index 78dcc9e11..f20cff94f 100644
--- a/app/src/main/java/com/horaapps/leafpic/Base/Album.java
+++ b/app/src/main/java/com/horaapps/leafpic/Base/Album.java
@@ -5,24 +5,18 @@
 import android.media.MediaScannerConnection;
 import android.net.Uri;
 import android.preference.PreferenceManager;
-import android.util.Log;
 
 import com.horaapps.leafpic.Adapters.PhotosAdapter;
-import com.horaapps.leafpic.MyApplication;
 import com.horaapps.leafpic.R;
 import com.horaapps.leafpic.utils.ContentHelper;
 import com.horaapps.leafpic.utils.StringUtils;
 
+import org.jetbrains.annotations.NotNull;
+
 import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileOutputStream;
-import java.io.InputStream;
-import java.io.OutputStream;
 import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.Collections;
 import java.util.Comparator;
-import java.util.List;
 
 /**
  * Created by dnld on 26/04/16.
@@ -33,38 +27,35 @@ public class Album {
     private String path = null;
     private int count = -1;
     private boolean selected = false;
-    private int filter_photos;
+    private int filter;
     public AlbumSettings settings = new AlbumSettings();
-    private int current = -1;
+    private int currentMediaIndex = 0;
 
     private String storageRootPath;
 
     public ArrayList<Media> media = new ArrayList<Media>();
     public ArrayList<Media> selectedMedias = new ArrayList<Media>();
 
-    public Album() {
-        media = new ArrayList<Media>();
-        selectedMedias = new ArrayList<Media>();
-    }
+    public Album() { }
 
-    public Album(String path, String name, int count, String storageRootPath) {
+    public Album(String path, String name) {
         media = new ArrayList<Media>();
         selectedMedias = new ArrayList<Media>();
         this.path = path;
         this.name = name;
-        this.count = count;
+    }
+
+    public Album(String path, String name, int count, String storageRootPath) {
+        this(path, name, count);
         this.storageRootPath = storageRootPath;
     }
 
     public Album(String path, String name, int count) {
-        media = new ArrayList<Media>();
-        selectedMedias = new ArrayList<Media>();
-        this.path = path;
-        this.name = name;
+        this(path, name);
         this.count = count;
     }
 
-    public Album(Context context, File mediaPath) {
+    public Album(Context context, @NotNull File mediaPath) {
         File folder = mediaPath.getParentFile();
         media = new ArrayList<Media>();
         selectedMedias = new ArrayList<Media>();
@@ -81,17 +72,10 @@ public Album(Context context, Uri mediaUri) {
         setCurrentPhotoIndex(0);
     }
 
-    public Album(String path, String name) {
-        media = new ArrayList<Media>();
-        selectedMedias = new ArrayList<Media>();
-        this.path = path;
-        this.name = name;
-    }
-
     public void updatePhotos(Context context) {
         SharedPreferences SP = PreferenceManager.getDefaultSharedPreferences(context);
         ArrayList<Media> mediaArrayList = new ArrayList<Media>();
-        File[] images = new File(getPath()).listFiles(new ImageFileFilter(filter_photos, SP.getBoolean("set_include_video",true)));
+        File[] images = new File(getPath()).listFiles(new ImageFileFilter(filter, SP.getBoolean("set_include_video",true)));
         for (File image : images)
             mediaArrayList.add(0, new Media(image));
         media = mediaArrayList;
@@ -118,23 +102,8 @@ public int compare(String lhs, String rhs) {
         return result;
     }
 
-   /* public void updatePhotos(PhotosAdapter adapter) {
-        media = new ArrayList<Media>();
-        File[] images = new File(getPath()).listFiles(new ImageFileFilter(filter_photos));
-        for (int i = 0; i < images.length; i++) {
-            media.add(0, new Media(images[i].getAbsolutePath(), images[i].lastModified(), images[i].length()));
-            adapter.notifyItemInserted(i);
-        }
-        sortPhotos();
-        adapter.notifyDataSetChanged();
-    }*/
-
-    public boolean areFiltersActive() {
-        return filter_photos != ImageFileFilter.FILTER_ALL;
-    }
-
     public void filterMedias(Context context, int filter) {
-        filter_photos = filter;
+        this.filter = filter;
         updatePhotos(context);
     }
 
@@ -157,11 +126,11 @@ public boolean isSelected() {
 
     public Media getMedia(int index) { return media.get(index); }
 
-    public void setCurrentPhotoIndex(int index){ current = index; }
+    public void setCurrentPhotoIndex(int index){ currentMediaIndex = index; }
 
-    public Media getCurrentMedia() { return getMedia(current); }
+    public Media getCurrentMedia() { return getMedia(currentMediaIndex); }
 
-    public int getCurrentMediaIndex() { return current; }
+    public int getCurrentMediaIndex() { return currentMediaIndex; }
 
     public String getContentDescription(Context c) {
         return c.getString(R.string.media);
@@ -209,19 +178,22 @@ public void setSelectedPhotoAsPreview(Context context) {
 
     private void setCurrentPhoto(String path) {
         for (int i = 0; i < media.size(); i++)
-            if (media.get(i).getPath().equals(path)) current = i;
+            if (media.get(i).getPath().equals(path)) currentMediaIndex = i;
     }
 
     public int getSelectedCount() {
         return selectedMedias.size();
     }
 
+    public boolean areMediaSelected() { return getSelectedCount() != 0;}
+
     public void selectAllPhotos() {
-        for (int i = 0; i < media.size(); i++)
+        for (int i = 0; i < media.size(); i++) {
             if (!media.get(i).isSelected()) {
                 media.get(i).setSelected(true);
                 selectedMedias.add(media.get(i));
             }
+        }
     }
 
     public int toggleSelectPhoto(int index) {
@@ -241,31 +213,32 @@ public void setDefaultSortingMode(Context context, int column) {
         settings.columnSortingMode = column;
     }
 
-    public void renameCurrentMedia(Context context, String newName) {
+    public boolean renameCurrentMedia(Context context, String newName) {
+        boolean success = false;
         try {
             File from = new File(getCurrentMedia().getPath());
             File to = new File(StringUtils.getPhotoPathRenamed(getCurrentMedia().getPath(), newName));
-            if (from.renameTo(to)) {
+            if (success =  ContentHelper.moveFile(context, from, to)) {
                 scanFile(context, new String[]{ to.getAbsolutePath(), from.getAbsolutePath() });
                 getCurrentMedia().path = to.getAbsolutePath();
             }
-        } catch (Exception e) {
-            e.printStackTrace();
-        }
+        } catch (Exception e) { e.printStackTrace(); }
+        return success;
     }
 
-    public int moveCurrentPhoto(Context context, String newName) {
+    public boolean moveCurrentPhoto(Context context, String newName) {
+        boolean success = false;
         try {
             File from = new File(getCurrentMedia().getPath());
             File to = new File(StringUtils.getPhotoPathMoved(getCurrentMedia().getPath(), newName));
-            if (ContentHelper.moveFile(context, from, to)) {
+            if (success = ContentHelper.moveFile(context, from, to)) {
                 scanFile(context, new String[]{ to.getAbsolutePath(), from.getAbsolutePath() });
                 getCurrentMedia().path = to.getAbsolutePath();
                 media.remove(getCurrentMediaIndex());
                 setCount(media.size());
             }
         } catch (Exception e) { e.printStackTrace(); }
-        return getCurrentMediaIndex();
+        return success;
     }
 
     public void setDefaultSortingAscending(Context context, Boolean ascending) {
@@ -311,9 +284,8 @@ public void selectAllPhotosUpTo(int targetIndex, PhotosAdapter adapter) {
     }
 
     public void clearSelectedPhotos() {
-        for (Media m : media) {
+        for (Media m : media)
             m.setSelected(false);
-        }
         selectedMedias.clear();
     }
 
@@ -341,39 +313,30 @@ public void copySelectedPhotos(Context context, String folderPath) {
             copyPhoto(context, media.getPath(), folderPath);
     }
 
-    public void copyPhoto(Context context, String olderPath, String folderPath) {
+    public boolean copyPhoto(Context context, String olderPath, String folderPath) {
+        boolean success = false;
         try {
             File from = new File(olderPath);
             File to = new File(StringUtils.getPhotoPathMoved(olderPath, folderPath));
-
-            if (ContentHelper.copyFile(context, from, to)) {
+            if (success = ContentHelper.copyFile(context, from, to))
                 scanFile(context, new String[]{ to.getAbsolutePath() });
-            }
-            /*InputStream in = new FileInputStream(from);
-            OutputStream out = new FileOutputStream(to);
-
-            byte[] buf = new byte[1024];
-            int len;
-            while ((len = in.read(buf)) > 0)
-                out.write(buf, 0, len);
-
-            in.close();
-            out.close();*/
 
-            //scanFile(context, new String[]{to.getAbsolutePath()});
         } catch (Exception e) { e.printStackTrace(); }
+        return success;
     }
 
     public void deleteCurrentMedia(Context context) {
-        deleteMedia(context, media.get(getCurrentMediaIndex()));
+        deleteMedia(context, getCurrentMedia());
         media.remove(getCurrentMediaIndex());
         setCount(media.size());
     }
 
-    private void deleteMedia(Context context, Media media) {
+    private boolean deleteMedia(Context context, Media media) {
+        boolean success;
         File file = new File(media.getPath());
-        if (ContentHelper.deleteFile(context, file))
+        if (success = ContentHelper.deleteFile(context, file))
             scanFile(context, new String[]{ file.getAbsolutePath() });
+        return success;
     }
 
     public void deleteSelectedMedia(Context context) {
@@ -393,7 +356,6 @@ public void renameAlbum(Context context, String newName) {
             for (int i = 0; i < media.size(); i++) {
                 File from = new File(media.get(i).getPath());
                 File to = new File(StringUtils.getPhotoPathRenamedAlbumChange(media.get(i).getPath(), newName));
-                //File to = new File(StringUtils.getPhotoPathRenamedAlbumChange(media.get(i).getPath(), newName));
                 if (ContentHelper.moveFile(context, from, to)) {
                     MediaScannerConnection.scanFile(context,
                             new String[]{from.getAbsolutePath(), to.getAbsolutePath()}, null, null);
@@ -405,4 +367,7 @@ public void renameAlbum(Context context, String newName) {
 
     public void scanFile(Context context, String[] path) { MediaScannerConnection.scanFile(context, path, null, null); }
 
+    public boolean areFiltersActive() {
+        return filter != ImageFileFilter.FILTER_ALL;
+    }
 }
diff --git a/app/src/main/java/com/horaapps/leafpic/MainActivity.java b/app/src/main/java/com/horaapps/leafpic/MainActivity.java
index ffd02ae1b..ed50e0462 100644
--- a/app/src/main/java/com/horaapps/leafpic/MainActivity.java
+++ b/app/src/main/java/com/horaapps/leafpic/MainActivity.java
@@ -20,6 +20,7 @@
 import android.os.Bundle;
 import android.os.Environment;
 import android.preference.PreferenceManager;
+import android.provider.MediaStore;
 import android.support.design.widget.FloatingActionButton;
 import android.support.v4.content.ContextCompat;
 import android.support.v4.view.GravityCompat;
@@ -91,6 +92,7 @@
 public class MainActivity extends ThemedActivity {
 
     private static String TAG = "AlbumsAct";
+    private int REQUEST_CODE_SD_CARD_PERMISSIONS = 42;
 
     private CustomAlbumsHandler customAlbumsHandler = new CustomAlbumsHandler(MainActivity.this);
     private SharedPreferences SP;
@@ -112,16 +114,16 @@ public class MainActivity extends ThemedActivity {
     private SelectAlbumBottomSheet bottomSheetDialogFragment;
     private SwipeRefreshLayout swipeRefreshLayout;
 
-    private boolean hidden = false, pickmode = false, editmode = false, albumsMode = true, firstLaunch = true;
+    private boolean hidden = false, pickMode = false, editMode = false, albumsMode = true, firstLaunch = true;
 
     private View.OnLongClickListener photosOnLongClickListener = new View.OnLongClickListener() {
         @Override
         public boolean onLongClick(View v) {
             int index = Integer.parseInt(v.findViewById(R.id.photo_path).getTag().toString());
-            if (!editmode) {
+            if (!editMode) {
                 // If it is the first long press
                 mediaAdapter.notifyItemChanged(album.toggleSelectPhoto(index));
-                editmode = true;
+                editMode = true;
             } else
                 album.selectAllPhotosUpTo(index, mediaAdapter);
 
@@ -134,8 +136,8 @@ public boolean onLongClick(View v) {
         @Override
         public void onClick(View v) {
                 int index = Integer.parseInt(v.findViewById(R.id.photo_path).getTag().toString());
-                if (!pickmode) {
-                    if (editmode) {
+                if (!pickMode) {
+                    if (editMode) {
                         mediaAdapter.notifyItemChanged(album.toggleSelectPhoto(index));
                         invalidateOptionsMenu();
                     } else {
@@ -157,7 +159,7 @@ public void onClick(View v) {
         public boolean onLongClick(View v) {
             int index = Integer.parseInt(v.findViewById(R.id.album_name).getTag().toString());
             albumsAdapter.notifyItemChanged(albums.toggleSelectAlbum(index));
-            editmode = true;
+            editMode = true;
             invalidateOptionsMenu();
             return true;
         }
@@ -167,7 +169,7 @@ public boolean onLongClick(View v) {
         @Override
         public void onClick(View v) {
             int index = Integer.parseInt(v.findViewById(R.id.album_name).getTag().toString());
-            if (editmode) {
+            if (editMode) {
                 albumsAdapter.notifyItemChanged(albums.toggleSelectAlbum(index));
                 invalidateOptionsMenu();
             } else {
@@ -187,7 +189,7 @@ public void onCreate(Bundle savedInstanceState) {
         albums = new HandlingAlbums(getApplicationContext());
         album = new Album();
         albumsMode = true;
-        editmode = false;
+        editMode = false;
         securityObj = new SecurityHelper(MainActivity.this);
 
         initUI();
@@ -233,7 +235,7 @@ public void onClick(View v) {
                 displayAlbums();
             }
         });
-        albumsMode = editmode = false;
+        albumsMode = editMode = false;
         invalidateOptionsMenu();
     }
 
@@ -260,7 +262,7 @@ private void displayAlbums(boolean reload) {
         });
 
         albumsMode = true;
-        editmode = false;
+        editMode = false;
         invalidateOptionsMenu();
         mediaAdapter.updateDataSet(new ArrayList<Media>());
         recyclerViewMedia.scrollToPosition(0);
@@ -317,7 +319,7 @@ private void displayPreFetchedData(Bundle data){
                 if (content == SplashScreen.ALBUMS_PREFETCHED) {
                     albums = ((MyApplication) getApplicationContext()).getAlbums();
                     displayAlbums(false);
-                    pickmode = data.getBoolean(SplashScreen.PICK_MODE);
+                    pickMode = data.getBoolean(SplashScreen.PICK_MODE);
                     albumsAdapter.updateDataSet(albums.dispAlbums);
                     toggleRecyclersVisibilty(true);
                 } else if (content == SplashScreen.PHOTS_PREFETCHED) {
@@ -393,8 +395,6 @@ public void onRefresh() {
             }
         });
 
-
-
         /**** DRAWER ****/
         mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
         mDrawerLayout.addDrawerListener(new ActionBarDrawerToggle(this,
@@ -419,25 +419,31 @@ public void onDrawerOpened(View drawerView) {
         fabCamera.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View v) {
-               /* if (!albumsMode && album.areFiltersActive()) {
+                if (!albumsMode && album.areFiltersActive()) {
                     album.filterMedias(getApplicationContext(), ImageFileFilter.FILTER_ALL);
                     mediaAdapter.updateDataSet(album.media);
                     checkNothing();
                     toolbar.getMenu().findItem(R.id.all_media_filter).setChecked(true);
                     fabCamera.setImageDrawable(new IconicsDrawable(MainActivity.this).icon(GoogleMaterial.Icon.gmd_camera_alt).color(Color.WHITE));
                 } else startActivity(new Intent(MediaStore.INTENT_ACTION_STILL_IMAGE_CAMERA));
-*/
-                //region TESTING
-                if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP) {
-                    startActivityForResult(new Intent(Intent.ACTION_OPEN_DOCUMENT_TREE), 42);
-                }
-
-                //newFolderDialog();
-                //endregion
             }
         });
 
+        //region TESTING
+        fabCamera.setOnLongClickListener(new View.OnLongClickListener() {
+            @Override
+            public boolean onLongClick(View v) {
+                //newFolderDialog();
 
+                // NOTE: this is used to acquire write permission on sd with api 21
+                // TODO call this one when unable to write on sd
+                if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP) {
+                    startActivityForResult(new Intent(Intent.ACTION_OPEN_DOCUMENT_TREE), REQUEST_CODE_SD_CARD_PERMISSIONS);
+                }
+                return false;
+            }
+        });
+        //endregion
 
 
         int statusBarHeight = Measure.getStatusBarHeight(getResources()),
@@ -536,6 +542,7 @@ public View getView(int position, View convertView, ViewGroup parent) {
                 }
             }
         });
+
         /**** OK Dialog ****/
         dialogExplorer.setPositiveButton(R.string.ok_action, new DialogInterface.OnClickListener() {
             @Override
@@ -558,10 +565,7 @@ public void onClick(DialogInterface dialog, int which) {
             }
         });
         /**** CANCEL Dialog ****/
-        dialogExplorer.setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener(){
-            @Override
-            public void onClick(DialogInterface dialog, int which) {}
-        });
+        dialogExplorer.setNegativeButton(R.string.cancel, null);
         /**** Set View ****/
         dialogExplorer.setView(dialogExplorerLayout);
 
@@ -598,11 +602,10 @@ public View getView(int position, View convertView, ViewGroup parent) {
     @TargetApi(Build.VERSION_CODES.LOLLIPOP)
     @Override
     public final void onActivityResult(final int requestCode, final int resultCode, final Intent resultData) {
-        if (requestCode == 42) {
-            Uri treeUri = null;
-            if (resultCode == Activity.RESULT_OK) {
+        if (resultCode == Activity.RESULT_OK) {
+            if (requestCode == REQUEST_CODE_SD_CARD_PERMISSIONS) {
                 // Get Uri from Storage Access Framework.
-                treeUri = resultData.getData();
+                Uri treeUri = resultData.getData();
 
                 // Persist URI in shared preference so that you can use it later.
                 // Use your own framework here instead of PreferenceUtil.
@@ -826,7 +829,7 @@ private void updateSelectedStuff() {
                     toolbar.setNavigationOnClickListener(new View.OnClickListener() {
                         @Override
                         public void onClick(View v) {
-                            editmode = false;
+                            editMode = false;
                             albums.clearSelectedAlbums();
                             albumsAdapter.notifyDataSetChanged();
                             invalidateOptionsMenu();
@@ -892,7 +895,7 @@ public void onClick(View v) {
     }
 
     private void finishEditMode() {
-        editmode = false;
+        editMode = false;
         if (albumsMode) {
             albums.clearSelectedAlbums();
             albumsAdapter.notifyDataSetChanged();
@@ -964,33 +967,33 @@ public boolean onCreateOptionsMenu(Menu menu) {
     @Override
     public boolean onPrepareOptionsMenu(final Menu menu) {
         if (albumsMode) {
-            editmode = albums.getSelectedCount() != 0;
-            menu.setGroupVisible(R.id.album_options_menu, editmode);
+            editMode = albums.getSelectedCount() != 0;
+            menu.setGroupVisible(R.id.album_options_menu, editMode);
             menu.setGroupVisible(R.id.photos_option_men, false);
         } else {
-            editmode = album.getSelectedCount() != 0;
-            menu.setGroupVisible(R.id.photos_option_men, editmode);
-            menu.setGroupVisible(R.id.album_options_menu, !editmode);
+            editMode = album.areMediaSelected();
+            menu.setGroupVisible(R.id.photos_option_men, editMode);
+            menu.setGroupVisible(R.id.album_options_menu, !editMode);
         }
 
         togglePrimaryToolbarOptions(menu);
         updateSelectedStuff();
 
-        menu.findItem(R.id.select_all).setVisible(editmode);
-        menu.findItem(R.id.installShortcut).setVisible(albumsMode && editmode);
+        menu.findItem(R.id.select_all).setVisible(editMode);
+        menu.findItem(R.id.installShortcut).setVisible(albumsMode && editMode);
         menu.findItem(R.id.type_sort_action).setVisible(!albumsMode);
-        menu.findItem(R.id.delete_action).setVisible(!albumsMode || editmode);
+        menu.findItem(R.id.delete_action).setVisible(!albumsMode || editMode);
         menu.findItem(R.id.setAsAlbumPreview).setVisible(!albumsMode && album.getSelectedCount() == 1);
         menu.findItem(R.id.clear_album_preview).setVisible(!albumsMode && album.hasCustomCover());
-        menu.findItem(R.id.renameAlbum).setVisible((albumsMode && albums.getSelectedCount() == 1) || (!albumsMode && !editmode));
+        menu.findItem(R.id.renameAlbum).setVisible((albumsMode && albums.getSelectedCount() == 1) || (!albumsMode && !editMode));
         menu.findItem(R.id.affixPhoto).setVisible(!albumsMode && album.getSelectedCount() > 1);
         return super.onPrepareOptionsMenu(menu);
     }
 
     private void togglePrimaryToolbarOptions(final Menu menu) {
-        menu.setGroupVisible(R.id.general_action, !editmode);
+        menu.setGroupVisible(R.id.general_action, !editMode);
 
-        if (!editmode) {
+        if (!editMode) {
             menu.findItem(R.id.filter_menu).setVisible(!albumsMode);
             menu.findItem(R.id.search_action).setVisible(albumsMode);
         }
@@ -1004,13 +1007,13 @@ public boolean onOptionsItemSelected(MenuItem item) {
             case R.id.select_all:
                 if (albumsMode) {
                     if (albums.getSelectedCount() == albumsAdapter.getItemCount()) {
-                        editmode = false;
+                        editMode = false;
                         albums.clearSelectedAlbums();
                     } else albums.selectAllAlbums();
                     albumsAdapter.notifyDataSetChanged();
                 } else {
                     if (album.getSelectedCount() == mediaAdapter.getItemCount()) {
-                        editmode = false;
+                        editMode = false;
                         album.clearSelectedPhotos();
                     } else album.selectAllPhotos();
                     mediaAdapter.notifyDataSetChanged();
@@ -1080,7 +1083,7 @@ protected Void doInBackground(String... arg0) {
                         if (albumsMode)
                             albums.deleteSelectedAlbums(MainActivity.this);
                         else {
-                            if (editmode)
+                            if (editMode)
                                 album.deleteSelectedMedia(getApplicationContext());
                             else {
                                 albums.deleteAlbum(album, getApplicationContext());
@@ -1111,7 +1114,7 @@ protected void onPostExecute(Void result) {
                 }
 
                 AlertDialog.Builder deleteDialog = new AlertDialog.Builder(MainActivity.this, getDialogStyle());
-                AlertDialogsHelper.getTextDialog(this, deleteDialog, getString(R.string.delete), getString(albumsMode || (!albumsMode && !editmode) ? R.string.delete_album_message : R.string.delete_photos_message));
+                AlertDialogsHelper.getTextDialog(this, deleteDialog, getString(R.string.delete), getString(albumsMode || (!albumsMode && !editMode) ? R.string.delete_album_message : R.string.delete_photos_message));
 
                 deleteDialog.setNegativeButton(this.getString(R.string.cancel), null);
                 deleteDialog.setPositiveButton(this.getString(R.string.delete), new DialogInterface.OnClickListener() {
@@ -1450,7 +1453,7 @@ protected Void doInBackground(String... arg0) {
                     }
                     @Override
                     protected void onPostExecute(Void result) {
-                        editmode = false;
+                        editMode = false;
                         album.clearSelectedPhotos();
                         dialog.dismiss();
                         invalidateOptionsMenu();
@@ -1588,7 +1591,7 @@ private void toggleRecyclersVisibilty(boolean albumsMode){
 
     @Override
     public void onBackPressed() {
-        if (editmode) finishEditMode();
+        if (editMode) finishEditMode();
         else {
             if (albumsMode) {
                 if (mDrawerLayout.isDrawerOpen(GravityCompat.START))