Question

我正在使用ArrayAdapter使用viewholder填充列表视图。我按照Android Alternate row Colors in ListView中的答案，但在第5行和第6行，第10行和第11行，第15行和第16行得到相同的颜色，依此类推。这是我在ArrayAdapter类

中的getView方法代码

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    ViewHolder vh;

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

    if (convertView == null) {
        convertView = inflater.inflate(R.layout.vaccine_row, parent, false);
        if (position % 2 == 0) {
            convertView.setBackgroundColor(Color.BLUE);
        }
        vh = new ViewHolder();
        vh.brandnametv = (TextView) convertView.findViewById(R.id.vaccinebrand);
        vh.genericnametv = (TextView) convertView.findViewById(R.id.vaccinegeneric);
        vh.companytv = (TextView) convertView.findViewById(R.id.company);
        vh.schedule1tv = (TextView) convertView.findViewById(R.id.schedule1);
        vh.schedule2tv = (TextView) convertView.findViewById(R.id.schedule2);
        vh.abbreviation = (TextView) convertView.findViewById(R.id.abbreviation);
        vh.vaccinetypeandroute = (TextView) convertView.findViewById(R.id.vaccinetypeandroute);


        convertView.setTag(vh);

    } else vh = (ViewHolder) convertView.getTag();

    vaccineItem di = itemsArrayList.get(position);
    vh.brandnametv.setText(di.getBrandname());
    vh.genericnametv.setText(di.getGenericname());
    vh.companytv.setText(di.getCompany());
    vh.schedule1tv.setText(di.getSchedule1());
    vh.schedule2tv.setText(di.getSchedule2());
    vh.abbreviation.setText(di.getAbbreviation());
    vh.vaccinetypeandroute.setText(di.getVaccinetypeandroute());
    return convertView;
}
static class ViewHolder {
    private TextView brandnametv;
    private TextView genericnametv;
    private TextView companytv;
    private TextView schedule1tv;
    private TextView schedule2tv;
    private TextView abbreviation;
    private TextView vaccinetypeandroute;
}

Answer 1

你需要这样做

if (position % 2 == 0) {
    convertView.setBackgroundColor(Color.BLUE);
}

在if (convertview == null)块之后，否则在重用时，convertView背景颜色将不会被更改

在第5和第6位重复的交替行背景颜色

1 个答案: