防止在过滤适配器数据时重新加载图像 [Android]

Question

我正在从片段搜索视图调用过滤数据功能，它工作正常，数据正在过滤，但图像正在过滤 reloaded.How 可以防止这种情况发生吗

public menuadapter(ArrayList<GridItem> mGridDat, Context context, OnItemClickListener listener) {
    this.mGridData=new ArrayList<GridItem>();
    this.orignallist=new ArrayList<GridItem>();
    mGridData.addAll(mGridDat);
    orignallist.addAll(mGridDat);
    this.context = context;
    this.listener = listener;
    this.Session=new session(context);
}

public void onBindViewHolder(final MyViewHolder holder, final int position) {
        final Activity activity = (Activity)context;


    String capital=mGridData.get(position).getTitle().substring(0,1).toUpperCase()+mGridData.get(position).getTitle().substring(1).toLowerCase();
        holder.txtview.setText(capital);

        Picasso.with(context).load(mGridData.get(position).getImage()).fit().centerCrop().skipMemoryCache().into(holder.imageView);
    }

过滤数据功能

    public void filterData(String query){
            query=query.toLowerCase();
            //Log.v("check1",String.valueOf(orignallist.size()));
            mGridData.clear();
            if(query.isEmpty()){
                mGridData.addAll(orignallist);
                // Log.v("check2",String.valueOf(orignallist.size()));
            }
        else {
            //Log.v("check0",String.valueOf(orignallist.size()));
            ArrayList<GridItem> newlist = new ArrayList<>();
            for(GridItem gd: orignallist) {

                if ((gd.getTitle().toLowerCase().contains(query))  ) {
                    newlist.add(gd);
                }
            }

            if(newlist.size()> 0){

                mGridData.addAll(newlist);
            }

        }

        notifyDataSetChanged();
    }

Answer 1

为了避免重定位图片，我想到的解决办法是

一种是删除与查询不匹配的图像并保留其他图像。像 -

if(!(gd.getTitle().toLowerCase().contains(query)))
{
// get it from holder.getAdapterPosition();
    contentsArrayList.remove(position);     
    notifyItemRemoved(position);
}

// out of for loop
notifyItemRangeChanged(firstRemovedPostion,contentsArrayList.size());

您可以隐藏与查询不匹配的元素，然后显示它是否匹配另一个

itemView.setVisibility(View.GONE);

Answer 2

试试这个

    Picasso.with(context).load(mGridData.get(position).getImage()).fit().centerCrop().networkPolicy(NetworkPolicy.OFFLINE).into(holder.imageView);

您需要使用以下属性和 而不是 skipMemoryCache()

OFFLINE

public static final NetworkPolicy OFFLINE

Forces the request through the disk cache only, skipping network.

https://square.github.io/picasso/2.x/picasso/com/squareup/picasso/NetworkPolicy.html

防止在过滤适配器数据时重新加载图像 [Android]

Prevent image reload on filtering adapter data [Android]

java

android

android-adapter

android-recyclerview