設定gridview裡面item的高度

public View getView(int position, View convertView, ViewGroup parent) {         convertView = LayoutInflater.from(context).inflate(R.layout.item, null);           AbsListView.LayoutParams param = new AbsListView.LayoutParams(                 android.view.ViewGroup.LayoutParams.FILL_PARENT,                 mGv.getHeight()/ROW_NUMBER);         convertView.setLayoutParams(param);           return convertView;     }