在Recyclerview

时间:2016-11-08 10:32:43

标签: android android-recyclerview

我将图像从相机和图库(多选)保存到内部存储中的文件夹。我想在水平Recyclerview中显示这些图像。在行布局中,有一个关闭按钮以及imageview。我想在单击关闭按钮时从内部存储中删除图像(文件)。我有两个问题: 问题1:当我从图库中选择图像(单个或多个)时,图像正确保存但在Recyclerview中,图库中的图像显示在所有位置,即如果文件夹中有2个图像,我从图库中选择1个图像,然后在Recyclerview中,所有3个位置都只有图库中的图像。 问题2:单击关闭按钮时如何从文件夹中删除图像?



//Recyclerview Adapter
public class RecycleImageAdapter extends RecyclerView.Adapter<RecycleImageAdapter.ViewHolder> {

    private List<String> itemList;
    private Context mContext;

    public RecycleImageAdapter(Context context, List<String> itemList) {
        this.itemList = itemList;
        this.mContext = context;
    }

    @Override
    public RecycleImageAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.imagelayout, parent, false);
        return new RecycleImageAdapter.ViewHolder(view);
    }

    @Override
    public void onBindViewHolder(final RecycleImageAdapter.ViewHolder holder, int position) {
        for (int i= 0; i < itemList.size(); i++) {
            Uri uri = Uri.parse(itemList.get(i));
            holder.setImageView(uri);


        }

    }

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

    class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{

        ImageView image, delbtn;

        ViewHolder(View itemView) {
            super(itemView);
            image = (ImageView) itemView.findViewById(R.id.img_thumbnail);
            delbtn = (ImageView)itemView.findViewById(R.id.del);
            delbtn.setOnClickListener(this);
        }

        public void setImageView(Uri uri){
            Picasso.with(mContext).load(uri).into(new Target() {
                @Override
                public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom from) {
                    image.setImageBitmap(bitmap);
                }

                @Override
                public void onBitmapFailed(Drawable errorDrawable) {
                    Log.e("sammy_error"," "+errorDrawable);
                }

                @Override
                public void onPrepareLoad(Drawable placeHolderDrawable) {

                }
            });
        }

        @Override
        public void onClick(View view) {
            int position = getAdapterPosition();
            Toast.makeText(mContext, itemList.get(position), Toast.LENGTH_SHORT).show();
            itemList.remove(position);
            notifyItemRemoved(position);
            notifyItemRangeChanged(position, itemList.size());

			//Here I'm getting ArrayIndexOutOfBoundsException
            File file = new File(itemList.get(position));
            file.delete();
        }
    }
}
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//in Fragment, code to load images

File directory = new File(file_path);
        File newfile[] = directory.listFiles();
        //finalImages is ArrayList<String>  
        if(finalImages!=null )finalImages.clear();

        for (int i= 0; i < newfile.length; i++) {
            String path = "file://"+newfile[i].getAbsolutePath();
            finalImages.add(path);
        }

        recyladapter.notifyDataSetChanged();
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1 个答案:

答案 0 :(得分:0)

我不明白你的第一部分解释得更多。

在第二部分中,将图像路径设置为imageView标记非常简单。

imageView.setTag(imageAbsolutePath);

当你点击图片时从图片视图中获取标签并将其转换为像这样的文件

File path = new File(imageView.getTag().toString());
path.delete();