Question

我正在尝试在列表视图的每一行中创建图像的横向视图。我正在使用毕加索来获取图像。我的问题是，在滚动时，horizontalscrollview中的图像会混乱。我希望使用：into（android.widget.ImageView目标，Callback回调）方法可以帮助imageview同步，但没有。

代码：

公共类RParrayAdapter扩展了ArrayAdapter {

static class ViewHolder {

    ImageView photoThumbIv1;
    ImageView photoThumbIv2;

    int position;

}

private final Context context2;
int mWidth;
int mHeight;
Callback callback;
ViewHolder viewHolder;


public RParrayAdapter(Context context2, ArrayList<Listing2> listings2) {
    super(context2, R.layout.list_item, listings2);
    this.context2 = context2;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    final Listing2 listing2 = getItem(position);

    if (convertView == null) {
        viewHolder = new ViewHolder();
        LayoutInflater inflater = LayoutInflater.from(getContext());
        convertView = inflater.inflate(R.layout.list_item, null);

        viewHolder.photoThumbIv1 = (ImageView) convertView
                .findViewById(R.id.photo_thumb_1);
        viewHolder.photoThumbIv2 = (ImageView) convertView
                .findViewById(R.id.photo_thumb_2);

        convertView.setTag(viewHolder);
    } else {
        viewHolder = (ViewHolder) convertView.getTag();
    }

    DisplayMetrics metrics = new DisplayMetrics();
    metrics = getContext().getResources().getDisplayMetrics();
    mWidth = (int) (.9 * (metrics.widthPixels));
    mHeight = (int) (mWidth / 1.33);

    if (listing2.thumbnail_image_url1 != null) {
        Picasso.with(context2).load(listing2.thumbnail_image_url1)
                .resize(mWidth, mHeight).centerCrop()
                .into(viewHolder.photoThumbIv1, new Callback() {
                      @Override
           public void onSuccess() {
           viewHolder.photoThumbIv2
           .setVisibility(View.VISIBLE);
           }

         @Override
         public void onError() {
          }
         });
         }

         if (listing2.thumbnail_image_url2 != null) {
         Picasso.with(context2).load(listing2.thumbnail_image_url2)
         .resize(mWidth, mHeight).centerCrop()
         .into(viewHolder.photoThumbIv2, new Callback() {

           @Override
           public void onSuccess() {
           viewHolder.photoThumbIv2
           .setVisibility(View.VISIBLE);
           }

         @Override
         public void onError() {

         }
         });
         }

    Picasso.with(context2).toString();

    }
    return convertView;
}

}

感谢您的帮助。

Answer 1

在我们提出其他怀疑之前。不应该是第一个if

if (listing2.thumbnail_image_url1 != null) {
        Picasso.with(context2).load(listing2.thumbnail_image_url1)
                .resize(mWidth, mHeight).centerCrop()
                .into(viewHolder.photoThumbIv1, new Callback() {
                      @Override
           public void onSuccess() {
           viewHolder.photoThumbIv1
           .setVisibility(View.VISIBLE);
           }

         @Override
         public void onError() {
          }
         });
         }

viewHolder.photoThumbIv2.setVisibility(View.VISIBLE);可能是viewHolder.photoThumbIv1.setVisibility(View.VISIBLE);，因为您要将图片加载到viewHolder.photoThumbIv1

在listview中的horizantalscrollview中使用Picasso。滚动时图像混乱

1 个答案: