带左右箭头的水平回收站视图指标

  • Z时代
  • 2024-01-10
  • 分类：问答

我正在尝试使用右箭头和左箭头指标实现水平回收视图。所以会发生的是，如果点击右箭头应该出现下一个项目，并且如果点击左箭头应该出现前一个项目，并且在列表的末端左箭头应该消失。我不知道如何实现这一点。有人可以帮我吗？以下是我的Horizo​​ntal Recyclerview适配器。带左右箭头的水平回收站视图指标

public class DialogRecyclerViewAdapter extends RecyclerView.Adapter<DialogRecyclerViewAdapter.ViewHolder> { 
Context context; 
List<UploadImage> dataAdapters; 
private SharedPreferences.Editor mSharedPrefEditor; 
ImageLoader imageLoader; 
public DialogRecyclerViewAdapter(List<UploadImage> getDataAdapter, Context context){ 
    super(); 
    this.dataAdapters = getDataAdapter; 
    this.context = context; 
} 
@Override 
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 
    View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.cardview, parent, false); 
    ViewHolder viewHolder = new ViewHolder(view); 
    return viewHolder; 
} 
@Override 
public void onBindViewHolder(ViewHolder Viewholder, int position) { 
    final UploadImage dataAdapterOBJ = dataAdapters.get(position); 
    imageLoader = ImageAdapter.getInstance(context).getImageLoader(); 
    imageLoader.get(dataAdapterOBJ.getImage(), 
      ImageLoader.getImageListener(
        Viewholder.VollyImageView,//Server Image 
        R.drawable.loading_1,//Before loading server image the default showing image. 
        android.R.drawable.ic_dialog_alert //Error image if requested image dose not found on server. 
      ) 
    ); 
    Viewholder.VollyImageView.setImageUrl(dataAdapterOBJ.getImage(), imageLoader); 
    Viewholder.ImageTitleTextView.setText(dataAdapterOBJ.getBrand_name()); 
    Viewholder.garment_price.setText(dataAdapterOBJ.getGarment_price()); 
    Viewholder.VollyImageView.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View view) { 
      SharedPreferences sharedPref = PreferenceManager.getDefaultSharedPreferences(MihuChatApplication.getInstance().getContext()); 
      mSharedPrefEditor = sharedPref.edit(); 
      mSharedPrefEditor.putString(Constants.KEY_FROM_CHAT, "fromChatWIndow").apply(); 
      Intent i=new Intent(MihuChatApplication.getInstance().getContext(), DetailsNewActivity.class); 
      i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 
      //PACK DATA TO SEND 
      i.putExtra("image_title",dataAdapterOBJ.getGarment_name()); 
      i.putExtra("image_url",dataAdapterOBJ.getImage_full()); 
      i.putExtra("desc_text", dataAdapterOBJ.getDesc_text()); 
      //i.putExtra("image_url2", imageLarger); 
      i.putExtra("image_price", dataAdapterOBJ.getGarment_price()); 
      //i.putExtra("disc_price", disc_price); 
      //open activity 
      MihuChatApplication.getInstance().getApplicationContext().startActivity(i); 
     } 
    }); 
} 
@Override 
public int getItemCount() { 
    return dataAdapters.size(); 
} 
class ViewHolder extends RecyclerView.ViewHolder{ 
    public TextView ImageTitleTextView, garment_price; 
    public NetworkImageView VollyImageView ; 
    public ViewHolder(View itemView) { 
     super(itemView); 
     garment_price = (TextView) itemView.findViewById(R.id.garment_price); 
     ImageTitleTextView = (TextView) itemView.findViewById(R.id.ImageNameTextView) ; 
     VollyImageView = (NetworkImageView) itemView.findViewById(R.id.VolleyImageView) ; 
    } 
}

}

在此先感谢。

回答：

请尝试以下

这里img_LeftScroll是左侧的ImageView和img_right_scroll是水平列表之间的权利ImageView的，rv_horizo​​ntal是Horizo​​ntalList将视图

随后的onclick图像视图做以下，希望工程

img_LeftScroll.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      if (horizontalLayoutManagaer.findFirstVisibleItemPosition() > 0) { 
       rv_horizontal.smoothScrollToPosition(horizontalLayoutManagaer.findFirstVisibleItemPosition() - 1); 
      } else { 
       rv_horizontal.smoothScrollToPosition(0); 
      } 
     } 
    }); 
img_right_scroll.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      rv_horizontal.smoothScrollToPosition(horizontalLayoutManagaer.findLastVisibleItemPosition() + 1); 
     } 
    });

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