滑行加载图像很慢 [英] Loading image with glide is slow

问题描述

我有应用程序与服务器连接，并且当图片加载似乎太慢时，并且当上下滚动似乎滑动时，想要再次读取图像！ 这是我的滑行适配器:

I have app connect with server and when pics load seems so slow and when scroll that up and down seems glide want read image again! This is my adapter of glide:

DataAdapter :

public class DataAdapter extends RecyclerView.Adapter<DataAdapter.ViewHolder> {
    private Context context;
    private ArrayList<AndroidVersion> android;


    public DataAdapter(Context context,ArrayList<AndroidVersion> android) {
        this.context = context;
        this.android = android;
    }


    @Override
    public DataAdapter.ViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
        View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.card_row, viewGroup, false);
        return new ViewHolder(view);
    }

    @Override
    public void onBindViewHolder(DataAdapter.ViewHolder viewHolder, int i) {

        viewHolder.tv_name.setText(android.get(i).getName());
        viewHolder.tv_version.setText(android.get(i).getVer());
        viewHolder.tv_api_level.setText(android.get(i).getApi());

        // load image into imageview using glide
        Glide.with(context).load("http://memaraneha.ir/Erfan/images/"+android.get(i).getPic())
                .placeholder(R.drawable.truiton)
                .error(R.drawable.truiton)
                .into(viewHolder.tv_image);
    }

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

    public class ViewHolder extends RecyclerView.ViewHolder{
        private TextView tv_name,tv_version,tv_api_level;
        public ImageView tv_image;
        public ViewHolder(View view) {
            super(view);

            tv_name = (TextView)view.findViewById(R.id.tv_name);
            tv_version = (TextView)view.findViewById(R.id.tv_version);
            tv_api_level = (TextView)view.findViewById(R.id.tv_api_level);
            tv_image= (ImageView) view.findViewById(R.id.img);

        }
    }

}

如果有人可以帮助您，请这样做！

If any one can help please do that!

推荐答案

只需从URL获取图像时添加此代码，此代码就会减小该图像的大小

Just add this when you get image from URL, this code reduces the size of that image

您也可以这样做

ByteArrayOutputStream bytes = new ByteArrayOutputStream();

    //save scaled down image to cache dir
    newBitmap.compress(Bitmap.CompressFormat.JPEG, 100, bytes);

    File imageFile = new File(filePath);

    // write the bytes in file
    FileOutputStream fo = new FileOutputStream(imageFile);
    fo.write(bytes.toByteArray());

检查此示例

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