Question

滚动Gridview时项目消失得很快。此外，图像尺寸会在快速滚动时发生变化。 这是我的代码：

 public View getView(final int position, View gridView, ViewGroup parent) {

            final ViewHolder holder;

            LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

            if (gridView == null) {
                holder = new ViewHolder();

                gridView = new View(context);
                gridView = inflater.inflate( R.layout.view_initial_gallery, null);
                holder.dirname = (TextView) gridView.findViewById(R.id.fname);
                holder.dirimg = (ImageView) gridView.findViewById(R.id.folder);
                holder.tick = (ImageView) gridView.findViewById(R.id.tick);

                File file=folders.get(position).getFilelist().get(0);
                holder.dirname.setText(folders.get(position).getFoldername());
                Picasso.with(context)
                        .load(new File(file.getPath()))
                        .resize(300, 300)
                        .centerCrop()
                        .into(holder.dirimg);

                gridView.setTag(holder);

            }
            else
            {
                holder = (ViewHolder)gridView.getTag();
            }
            return gridView;
        }

Answer 1

我已经修复了notifyDataSetChanged（）的问题。希望它也适合你。

mGridView.setOnScrollListener(new AbsListView.OnScrollListener() {
   //     Boolean isScrollStop=false;
        @Override
        public void onScrollStateChanged(AbsListView view, int scrollState) {

            if (scrollState == AbsListView.OnScrollListener.SCROLL_STATE_IDLE) {
                  mAdapter.notifyDataSetChanged();
            } 
        }

        @Override
        public void onScroll(AbsListView view, int firstVisibleItem,
                             int visibleItemCount, int totalItemCount){

        }
    });

Answer 2

我有同样的问题，除了我使用Glide而不是Picasso进行图像加载。我猜你的ImageView的尺寸设置为wrap_content。尝试在dp＆f; s中将高度和宽度设置为显式值，这对我有用。

滚动Gridview时，项目会消失。此外，图像尺寸在快速滚动时也会发生变化

2 个答案: