ArrayAdapter是Android中用于将数据绑定到列表视图(如ListView,GridView等)的一个类。要提高列表渲染速度,可以采取以下策略:
public class MyArrayAdapter extends ArrayAdapter<String> {
private LayoutInflater mInflater;
public MyArrayAdapter(Context context, int resource, List<String> objects) {
super(context, resource, objects);
mInflater = LayoutInflater.from(context);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder viewHolder;
if (convertView == null) {
convertView = mInflater.inflate(R.layout.list_item, parent, false);
viewHolder = new ViewHolder();
viewHolder.textView = convertView.findViewById(R.id.text_view);
convertView.setTag(viewHolder);
} else {
viewHolder = (ViewHolder) convertView.getTag();
}
viewHolder.textView.setText(getItem(position));
return convertView;
}
static class ViewHolder {
TextView textView;
}
}
请注意,以上策略并非适用于所有情况。在实际开发中,需要根据具体需求和场景来选择合适的优化方法。