Question

我使用滑动库将服务器中的图像数组加载到RecyclewView。我有一个名为ImagePreviewActivity的活动，我希望缩略图中的图像在点击时显示。单击某个项目或图像时，我想将该图像从缩略图加载到另一个活动中。我如何实现这一目标？

GalleryAdapter.java

  public class GalleryAdapter extends RecyclerView.Adapter<GalleryAdapter.MyViewHolder> {
    ArrayList<Album> arrayList = new ArrayList<>();
    Activity activity;
    public GalleryAdapter(ArrayList<Album> arrayList, Context context) {
this.arrayList = arrayList;
activity = (Activity) context;;
    }
    @Override
    public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_view, parent,false);
        return new MyViewHolder(view);
    }

    @Override
    public void onBindViewHolder(final MyViewHolder holder, int position) {
        holder.Thumbnail.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
Intent intent = new Intent(activity, ImagePreviewActivity.class);
activity.startActivity(intent);

            }
        });
//url path of images 
            String path = Config.img_path + arrayList.get(position).getId()+".jpg";
    Glide.with(activity).load(path).placeholder(R.drawable.placeholder).error(R.drawable.error).listener(new RequestListener<String, GlideDrawable>() {
                    @Override
                    public boolean onException(Exception e, String model, Target<GlideDrawable> target, boolean isFirstResource) {
                        holder.progressBar.setVisibility(View.GONE);
                        return false;
                    }

                    @Override
                    public boolean onResourceReady(GlideDrawable resource, String model, Target<GlideDrawable> target, boolean isFromMemoryCache, boolean isFirstResource) {

                        return false;
            }
        }).into(holder.Thumbnail);
    }

    @Override
    public int getItemCount(){
        return arrayList.size();
    }
    public static class MyViewHolder extends RecyclerView.ViewHolder {
ImageView Thumbnail;
TextView Title;
String img_path;

        public MyViewHolder(View itemView) {
            super(itemView);
            Thumbnail = itemView.findViewById(R.id.thumbnail);
            Title = itemView.findViewById(R.id.album_title);
           img_path = Config.img_path +".jpg";


        }
    }
}

ImageActivityPreview.java

 ImageView imageView = findViewById(R.id.image_preview);
    Intent intent = getIntent();
    String image_url = intent.getStringExtra("imagerurl");
    Glide.with(this).load(image_url).into(imageView);

Answer 1

只需使用

将点击后的图片的网址发送到下一个活动

intent.putExtra("imgURL",path);

方法然后在该活动中使用滑动加载图像。据我所知，如果图像是通过滑行下载的，那么它将保留在缓存中。

获取url图像位置android

1 个答案: