如何通过 json 将本地图像（可绘制图像文件）显示到 cardview。

Question

如何将本地图像（可绘制图像文件）显示到cardviewvia json. 我想离线加载图像而不是使用毕加索库我正在使用选项卡布局和我的 Frament.java@Nullable@Overridepublic View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {    View rootView = inflater.inflate(            R.layout.fragment, container, false);    return rootView;}@Overridepublic void onViewCreated(View view, @Nullable Bundle savedInstanceState) {    super.onViewCreated(view, savedInstanceState);    final ArrayList<Website> babyList = Website.getbabyFromFile("baby&kids.json", getActivity());    adapter = new WebsiteAdapter(this, babyList);    recyclerView = (RecyclerView) view.findViewById(R.id.recycler_view);    recyclerView.setLayoutManager(new GridLayoutManager(getActivity(),2));    recyclerView.setAdapter(adapter);}

Answer 1

如果你有绘制文件夹下的本地图片为所有一）myntra B）firstCry C）跳房子等等，那么你只是单纯的需要得到基于URL正确绘制。您可以创建工厂类，它将为您提供@DrawableRes

    public static @DrawableRes int getDrawable(String url){

        if(url.contains("Myntra")) {

            return R.drawable.myntra;

        } else if(url.contains("Snapdeal")) {

            return R.drawable.snapdeal;

        }

        // Add other if else to support other website url

    }

这是修改后的 onBindViewHolder 方法。

@Override

public void onBindViewHolder(WebsiteAdapter.ViewHolder holder, int position) {

   Website website = mDataSource.get(position);

   holder.url.setText(website.getUrl());

   holder.thumbnailImageView.setImageResource(getDrawable(website.getUrl()));

}