improve GIF support

app/src/main/java/com/simplemobiletools/gallery/adapters/DirectoryAdapter.java

@@ -9,6 +9,7 @@ import android.widget.ImageView;
 import android.widget.TextView;
 
 import com.bumptech.glide.Glide;
+import com.bumptech.glide.load.engine.DiskCacheStrategy;
 import com.simplemobiletools.gallery.R;
 import com.simplemobiletools.gallery.models.Directory;
 
@@ -42,8 +43,13 @@ public class DirectoryAdapter extends BaseAdapter {
         final Directory dir = mDirs.get(position);
         viewHolder.dirName.setText(dir.getName());
         viewHolder.photoCnt.setText(String.valueOf(dir.getMediaCnt()));
-        Glide.with(mContext).load(dir.getThumbnail()).placeholder(R.color.tmb_background).centerCrop().crossFade()
+        final String tmb = dir.getThumbnail();
-                .into(viewHolder.dirThumbnail);
+        if (tmb.endsWith(".gif")) {
+            Glide.with(mContext).load(tmb).asGif().diskCacheStrategy(DiskCacheStrategy.NONE).placeholder(R.color.tmb_background)
+                    .centerCrop().crossFade().into(viewHolder.dirThumbnail);
+        } else {
+            Glide.with(mContext).load(tmb).placeholder(R.color.tmb_background).centerCrop().crossFade().into(viewHolder.dirThumbnail);
+        }
 
         return convertView;
     }

app/src/main/java/com/simplemobiletools/gallery/adapters/MediaAdapter.java

@@ -8,6 +8,7 @@ import android.widget.BaseAdapter;
 import android.widget.ImageView;
 
 import com.bumptech.glide.Glide;
+import com.bumptech.glide.load.engine.DiskCacheStrategy;
 import com.simplemobiletools.gallery.R;
 import com.simplemobiletools.gallery.models.Medium;
 
@@ -46,7 +47,11 @@ public class MediaAdapter extends BaseAdapter {
         }
 
         final String path = medium.getPath();
+        if (medium.isGif()) {
+            Glide.with(mContext).load(path).asGif().diskCacheStrategy(DiskCacheStrategy.NONE).into(viewHolder.photoThumbnail);
+        } else {
             Glide.with(mContext).load(path).placeholder(R.color.tmb_background).centerCrop().crossFade().into(viewHolder.photoThumbnail);
+        }
 
         return convertView;
     }

app/src/main/java/com/simplemobiletools/gallery/fragments/PhotoFragment.java

@@ -7,6 +7,7 @@ import android.view.View;
 import android.view.ViewGroup;
 
 import com.bumptech.glide.Glide;
+import com.bumptech.glide.load.engine.DiskCacheStrategy;
 import com.bumptech.glide.request.animation.ViewPropertyAnimation;
 import com.simplemobiletools.gallery.Constants;
 import com.simplemobiletools.gallery.R;
@@ -26,7 +27,11 @@ public class PhotoFragment extends ViewPagerFragment implements PhotoViewAttache
             return view;
 
         final PhotoView photoView = (PhotoView) view.findViewById(R.id.photo_view);
+        if (medium.isGif()) {
+            Glide.with(getContext()).load(medium.getPath()).asGif().diskCacheStrategy(DiskCacheStrategy.NONE).into(photoView);
+        } else {
             Glide.with(getContext()).load(medium.getPath()).asBitmap().thumbnail(0.2f).animate(fadeInAnimator).into(photoView);
+        }
         new PhotoViewAttacher(photoView).setOnPhotoTapListener(this);
 
         return view;

app/src/main/java/com/simplemobiletools/gallery/models/Medium.java

@@ -26,6 +26,10 @@ public class Medium implements Serializable, Comparable {
         return timestamp;
     }
 
+    public boolean isGif() {
+        return getPath().endsWith(".gif");
+    }
+
     @Override
     public int compareTo(Object object) {
         final Medium medium = (Medium) object;