J'ai un curseur d'image horizontale RecyclerView
au bas d'un fragment. Le haut du fragment montre quelques détails. Une fois que l'utilisateur a cliqué sur les images en bas, l'idée est de supprimer cette image du curseur d'image et d'afficher ses informations dans le fragment. Maintenant, l'information apparaît mais l'image n'est pas supprimée du RecyclerView
. Voici ce que j'ai codé dans le Onclick
de la disposition la plus externe. J'ai essayé toutes les réponses connexes que j'ai pu trouver mais rien n'a fonctionné. Ils sont tous dans le code. S'il vous plaît laissez-moi savoir ce que je fais mal ou ce qui manque.RecyclerView ne se met pas à jour après la suppression d'un élément
holder.itemRowRelativeLayout.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (isFiltering) {
mItemList.clear();
mItemList.addAll(mOriginalItemList);
mItemList.remove(position);// At this point mItemList holds the correct. That is all the images but not the one that was clicked.
notifyItemRemoved(position); //solution 1
notifyItemRangeRemoved(position, getItemCount()); // solution 2
notifyItemRangeRemoved(0, getItemCount()); // solution 3
notifyDataSetChanged();//solution 4
}
}
});
complet Code de l'adaptateur
public class ImageGallery16X9Adapter<T extends GalleryItem> extends RecyclerView.Adapter<ImageGallery16X9Adapter.GalleryItemViewHolder> {
public enum GalleryMode {
All_SAME,
FIRST_DIFFERENT
}
private Context mContext;
private BasePresenter mPresenter;
private List<T> mItemList;
private List<T> mOriginalItemList;
private GalleryItem mFirstItem;
private GalleryMode mGalleryMode;
private int deviceWidth, itemWidth, marginSingle, marginDouble;
private boolean isFiltering;
public ImageGallery16X9Adapter(Context context, BasePresenter presenter, GalleryMode galleryMode, List<T> itemList, GalleryItem firstItem, boolean isFiltering) {
mContext = context;
mPresenter = presenter;
mGalleryMode = galleryMode;
mItemList = new ArrayList<>(itemList);
mOriginalItemList = new ArrayList<>(itemList);
mFirstItem = firstItem;
deviceWidth = CommonUtils.getDeviceWidth((Activity) mContext);
itemWidth = (int) (deviceWidth * 0.9);
marginDouble = (int) (deviceWidth * 0.05);
marginSingle = (int) (deviceWidth * 0.025);
this.isFiltering = isFiltering;
}
@Override
public GalleryItemViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
return new GalleryItemViewHolder(LayoutInflater.from(parent.getContext()).
inflate(R.layout.row_image_gallery_16x9_item, parent, false));
}
@Override
public void onBindViewHolder(GalleryItemViewHolder holder, final int position) {
RecyclerView.LayoutParams layoutParams = (RecyclerView.LayoutParams) holder.itemRowRelativeLayout.getLayoutParams();
RelativeLayout.LayoutParams rlParams = (RelativeLayout.LayoutParams) holder.itemImageView.getLayoutParams();
layoutParams.width = itemWidth;
rlParams.height = (int) (layoutParams.width * Constant.HEIGHT_FACTOR_16X9);
if (position == 0) {
layoutParams.leftMargin = marginDouble;
layoutParams.rightMargin = 0;
if (mGalleryMode == GalleryMode.FIRST_DIFFERENT) {
holder.itemTitle.setVisibility(View.VISIBLE);
holder.itemTitle.setText(mFirstItem.getItemTitle());
if (mFirstItem.getItemImage() != null) {
Picasso.with(MyApplication.getAppContext()).load(mFirstItem.getItemImage()).fit().placeholder(R.drawable.error_image).error(R.drawable.error_image).into(holder.itemImageView);
} else {
Picasso.with(MyApplication.getAppContext()).load(R.drawable.error_image).placeholder(R.drawable.error_image).error(R.drawable.error_image).fit().into(holder.itemImageView);
}
holder.itemDescription.setText(mFirstItem.getItemDescription());
}
} else {
if (mGalleryMode == GalleryMode.FIRST_DIFFERENT) {
if (position == mItemList.size()) {
layoutParams.rightMargin = marginDouble;
} else {
layoutParams.rightMargin = 0;
}
} else {
if (position == mItemList.size() - 1) {
layoutParams.rightMargin = marginDouble;
} else {
layoutParams.rightMargin = 0;
}
}
layoutParams.leftMargin = marginSingle;
}
int itemPosition = position;
if (mGalleryMode == GalleryMode.FIRST_DIFFERENT && position > 0) {
itemPosition = position - 1;
T item = mItemList.get(itemPosition);
holder.itemTitle.setVisibility(View.GONE);
holder.itemDescription.setText(item.getItemDescription());
Picasso.with(mContext).load(item.getItemImage()).fit().placeholder(R.drawable.error_image).error(R.drawable.error_image).into(holder.itemImageView);
} else if (mGalleryMode == GalleryMode.All_SAME) {
T item = mItemList.get(itemPosition);
holder.itemTitle.setVisibility(View.GONE);
holder.itemDescription.setText(item.getItemDescription());
Picasso.with(mContext).load(item.getItemImage()).fit().placeholder(R.drawable.error_image).error(R.drawable.error_image).into(holder.itemImageView);
}
holder.itemRowRelativeLayout.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (mGalleryMode == GalleryMode.FIRST_DIFFERENT) {
if (position == 0) {
mPresenter.onItemClicked(mFirstItem);
} else {
mPresenter.onItemClicked(mItemList.get(position - 1));
}
} else {
mPresenter.onItemClicked(mItemList.get(position));
if (isFiltering) {
mItemList.clear();
mItemList.addAll(mOriginalItemList);
mItemList.remove(position);
notifyItemRemoved(position); //solution 1
notifyItemRangeRemoved(position, getItemCount()); // solution 2
notifyItemRangeRemoved(0, getItemCount()); // solution 3
notifyDataSetChanged();//solution 4
}
}
}
});
}
@Override
public int getItemCount() {
if (mGalleryMode == GalleryMode.FIRST_DIFFERENT)
return mItemList.size() + 1;
else
return mItemList.size();
}
static class GalleryItemViewHolder extends RecyclerView.ViewHolder {
private final TextView itemDescription, itemTitle;
private final ImageView itemImageView, itemFavoriteImageView;
private final RelativeLayout itemRowRelativeLayout;
public GalleryItemViewHolder(View itemView) {
super(itemView);
itemRowRelativeLayout = (RelativeLayout) itemView.findViewById(R.id.rl_gallery_item_row);
itemImageView = (ImageView) itemView.findViewById(R.id.img_gallery_item);
itemFavoriteImageView = (ImageView) itemView.findViewById(R.id.img_gallery_item_favorite);
itemTitle = (TextView) itemView.findViewById(R.id.txt_gallery_item_name);
itemDescription = (TextView) itemView.findViewById(R.id.txt_gallery_item_description);
}
}
}
Afficher le code de la carte complète, –
Veuillez consulter ce lien .. https: // sta ckoverflow.com/questions/26076965/android-recyclerview-addition-removal-of-items –
Veuillez vérifier si cette méthode est appelée ou non lorsque vous cliquez sur la couche la plus externe. (Utilisez la journalisation pour vérifier) – Jordan