<com.w4lle.library.NineGridlayout
 android:layout_marginTop="8dp"
 android:id="@+id/iv_ngrid_layout"
 android:layout_height="wrap_content"
 android:layout_width="match_parent" />

class Adapter extends NineGridAdapter {

 public Adapter(Context context, List list) {
  super(context, list);
 }

 @Override
 public int getCount() {
  return (list == null) ? 0 : list.size();
 }

 @Override
 public String getUrl(int position) {
  return getItem(position) == null ? null : ((Image)getItem(position)).getUrl();
 }

 @Override
 public Object getItem(int position) {
  return (list == null) ? null : list.get(position);
 }

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

 @Override
 public View getView(int i) {
  ImageView iv = new ImageView(context);
  iv.setScaleType(ImageView.ScaleType.CENTER_CROP);
  iv.setBackgroundColor(Color.parseColor("#f5f5f5"));
  Picasso.with(context).load(getUrl(i)).placeholder(new ColorDrawable(Color.parseColor("#f5f5f5"))).into(iv);
  return iv;
 }
}

adapter = new Adapter(context, image);
viewHolder.ivMore.setAdapter(adapter);
viewHolder.ivMore.setOnItemClickListerner(new NineGridlayout.OnItemClickListerner() {
 @Override
 public void onItemClick(View view, int position) {
  //do some thing
  Log.d("onItemClick : " + position);
 }
});

setsetGap //设置图片间隔
setDefaultWidth //设置单张图片时的宽度，默认 140 * density
setDefaultHeight //设置单张图片时的高度,默认 140 * density