Create Gallery App in Android using Recyclerview (Multiple Images Selection)

I am developing a gallery app. I can't add delete function. How can i add delete function. Advance thanks.

Sir can how to open a specific image

thanks, please i want to select one or more image in an activity saved locally

hello , i have a question . if i take the module of multiple image section . and then i use my app commercially . is it create issue for me?

Query query = imageList.orderByChild("menuId").equalTo(categoryId);
FirebaseRecyclerOptions options = new FirebaseRecyclerOptions.Builder<Gallery>()
.setQuery(query, Gallery.class).build();
query.addValueEventListener(new ValueEventListener() {

@Override
public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
for(DataSnapshot postSnapshot : dataSnapshot.getChildren()) {
String galleryImage = postSnapshot.child("galleryImage").getValue(String.class);
Gallery galleryList = new Gallery();
galleryList.setGalleryImage(galleryImage);
mvalues.add(galleryList);

Log.e("Hello", String.valueOf(mvalues.size()));
}



}
image has 3 in database .It is count mvaluesSize 6

sir i have question , im download your sourcecode and im runing, but can't show image from galery, you have solution?

Can we build project without these library API

Sir I have a question please answer me sir how can we upload image with time to show limited time user set in firebase time finished image remove from firebase