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Élément de culture RecyclerView de droite à gauche

j'utilise RecyclerView dans la direction horizontale et le nouvel élément est de gauche à droite. et le défilement est ltr. Comment changer cette direction?

 enter image description here

Code XML:

 <Android.support.v7.widget.RecyclerView
                    Android:id="@+id/rc3"
                    Android:layout_gravity="right"
                    Android:layout_width="fill_parent"
                    Android:layout_height="wrap_content" />

Et Java:

    RecyclerView rc1 = (RecyclerView) findViewById(R.id.rc1);
    AdapterMainPrice mainPrice = new AdapterMainPrice(StructPrice.getThreePrice());
    rc1.setHasFixedSize(false);
    LinearLayoutManager llm = new LinearLayoutManager(G.context);
    llm.setOrientation(LinearLayoutManager.HORIZONTAL);
    rc1.setLayoutManager(llm);
    rc1.setAdapter(mainPrice);

Adaptateur:

classe publique AdapterMainPrice extend RecyclerView.Adapter {

private List<StructPrice> prices;

public AdapterMainPrice(List<StructPrice> catList) {
    this.prices = catList;

}


@Override
public int getItemCount() {
    return prices.size();
}


@Override
public void onBindViewHolder(NewsViewHolder ghazaViewHolder, int position) {

    StructPrice price = prices.get(position);
    ghazaViewHolder.vTitle.setText(price.getProductName());
    Glide.with(G.context)
            .load(price.getProductPic())
            .placeholder(R.drawable.loading_spinner)
            .crossFade()
            .into(ghazaViewHolder.Vimg);
    ghazaViewHolder.cardView.startAnimation(ghazaViewHolder.animation);
}

@Override
public NewsViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
    View itemView = LayoutInflater.
            from(viewGroup.getContext()).
            inflate(R.layout.adapter_item_main, viewGroup, false);
    return new NewsViewHolder(itemView);
}

public static class NewsViewHolder extends RecyclerView.ViewHolder {
    protected TextView vTitle;
    protected ImageView Vimg;
    protected Animation animation;
    protected CardView cardView;

    public NewsViewHolder(View v) {
        super(v);
        vTitle = (TextView) v.findViewById(R.id.mainRCtv);
        Vimg = (ImageView) v.findViewById(R.id.mainRCimg);
        animation = AnimationUtils.loadAnimation(G.context, R.anim.fadein);
        cardView = (CardView) v.findViewById(R.id.mainRCCard);
    }


}
androidandroid-recyclerviewright-to-left
12
javaddroid

c'est assez simple, appelez simplement setReverseLayout (true) pour votre LayoutManager:

LinearLayoutManager layoutManager = new LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL, true);
        layoutManager.setReverseLayout(true);

il est expliqué dans sa documentation:

 /**
 * Used to reverse item traversal and layout order.
 * This behaves similar to the layout change for RTL views. When set to true, first item is
 * laid out at the end of the UI, second item is laid out before it etc.
 *
 * For horizontal layouts, it depends on the layout direction.
 * When set to true, If {@link Android.support.v7.widget.RecyclerView} is LTR, than it will
 * layout from RTL, if {@link Android.support.v7.widget.RecyclerView}} is RTL, it will layout
 * from LTR.
 *
 * If you are looking for the exact same behavior of
 * {@link Android.widget.AbsListView#setStackFromBottom(boolean)}, use
 * {@link #setStackFromEnd(boolean)}
 */
public void setReverseLayout(boolean reverseLayout) {
    assertNotInLayoutOrScroll(null);
    if (reverseLayout == mReverseLayout) {
        return;
    }
    mReverseLayout = reverseLayout;
    requestLayout();
}
45
Ashkan Ghodrat

Découvrez comment le faire, tout ce que vous avez à faire est de définir

linearLayoutManager.setStackFromEnd (true);

  LinearLayoutManager linearLayoutManager = new LinearLayoutManager(getActivity());
                linearLayoutManager.setOrientation(LinearLayoutManager.HORIZONTAL);
                linearLayoutManager.setStackFromEnd(true);
7
Ahmad Magdy

Il suffit d'utiliser ceci:

Android:layoutDirection="rtl"

c'est tout :)

6
Sajad Rahmanipour

Vous pouvez l'ajouter directement à partir de XML en ajoutant l'attribut app:reverseLayout:

<Android.support.v7.widget.RecyclerView
    Android:layout_width="match_parent"
    Android:layout_height="wrap_content"
    Android:orientation="horizontal"
    app:layoutManager="Android.support.v7.widget.LinearLayoutManager"
    app:layout_constraintEnd_toStartOf="@+id/imageButton2"
    app:layout_constraintTop_toTopOf="@+id/imageButton2"
    app:reverseLayout="true"
    tools:listitem="@layout/images_new_post_item" />
3
Andrew Hossam

C'est facile!

setReverseLayout (true) 

RecyclerAdapterHoTarakoneshha recyclerAdapterHoTarakoneshha = new RecyclerAdapterHoTarakoneshha(mContext, arrayList);
    LinearLayoutManager linearLayoutManager = new LinearLayoutManager(mContext, LinearLayoutManager.HORIZONTAL, false);
    linearLayoutManager.setReverseLayout(true);
    recyclerTarakonesh.setLayoutManager(linearLayoutManager);
    recyclerTarakonesh.setHasFixedSize(true);
    recyclerTarakonesh.addItemDecoration(new HorizntalSpaceItemDecoration(mContext, 10));
    recyclerTarakonesh.setAdapter(recyclerAdapterHoTarakoneshha);
2
Hadi Note

meilleure façon d'utiliser layoutDirection to rtl

<Android.support.v7.widget.RecyclerView
    Android:layout_width="match_parent"
    Android:layout_height="wrap_content"
    Android:layoutDirection="rtl" />
1
Rasoul Miri

Faites en sorte que la disposition inversée soit vraie pour obtenir des éléments de droite à gauche dans recyclerview comme le code ci-dessous:

 recycler_view.setLayoutManager(new LinearLayoutManager(getActivity(), LinearLayoutManager.HORIZONTAL, true));  // true is for reverse layout value
1
Savita Sharma