Question

我不知道为什么notifyDataSetChanged在我的gridview中不起作用。我的改造事件onResponse我调用该方法来刷新我的gridview项目并且没有任何变化......

改装电话

@Override
public void onResponse(Call<PictureInfos> call, Response<PictureInfos> response) {
     PictureInfos infoResponse = response.body();

     infoResponse.save();
     pictureInfos.add(infoResponse);
     adapter.updatePicturesList(pictureInfos);
}

Gridview BaseAdapter

public class ImageAdapter extends BaseAdapter {

    private Context mContext;
    private LayoutInflater mLayoutInflater;
    private List<PictureInfos> mPInfoList;

    public ImageAdapter(Context context, List<PictureInfos> pInfoList) {
        mContext = context;
        mPInfoList = pInfoList;
        mLayoutInflater = LayoutInflater.from(context);
        Log.v("5", "" + pInfoList.size());
    }

    public void updatePicturesList(List<PictureInfos> pInfoList) {
        mPInfoList = pInfoList;
        this.notifyDataSetChanged();
    }

    @Override
    public int getCount() {
        return mPInfoList.size();
    }

    @Override
    public Object getItem(int position) {
        return null;
    }

    @Override
    public long getItemId(int position) {
        return 0;
    }

    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {

        View view;
        final ImageView imageView;
        final TextView legend;

        // Soft display
        if(convertView == null){
            view = mLayoutInflater.inflate(R.layout.thumbnail_gallery, parent, false);
        }else{
            view = convertView;
        }

        // Get layout item (Image and Legend)
        imageView = (ImageView) view.findViewById(R.id.iv_thumbnail);
        legend = (TextView) view.findViewById(R.id.text_thumb);

        // Get the download path image
        String pic = Globals.SERVER_NAME+Globals
                            .ACCOUNT_SERVER_PATH+mPInfoList
                            .get(position).getFolderPath()+"/"+
                            VgzTools.addSuffix(mPInfoList.get(position).getFilename(), "-thumb");

            Glide.with(mContext)
                    .load(pic)
                    .diskCacheStrategy(DiskCacheStrategy.SOURCE)
                    .into(imageView);

        return view;
    }
}

你有想法解决这个问题吗？

感谢。

Answer 1

试试这个：

@Override

public void onResponse(Call<PictureInfos> call, Response<PictureInfos> response) {
     PictureInfos infoResponse = response.body();
pictureInfos.clear();
pictureInfos.addAll(infoResponse);
adapter.notifyDataSetChanged();
}

Answer 2

当您将List<PictureInfos> mPInfoList定义为最终版时，您将了解错误。

Android notifyDataSetChanged在Gridview中不起作用

2 个答案: