我正在尝试开发通用数组适配器类,我希望从该类继承奇数和偶数行的行颜色属性。我的通用适配器类是

public class SpecialAdapter<T> extends ArrayAdapter<T> {
    private int[] colors = new int[] { 0x30FF0000, 0x300000FF };

    public SpecialAdapter(Context context, int resource, List<T> items) {
        super(context, resource,items);
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View view = super.getView(position, convertView, parent);
        int colorPos = position % colors.length;
        view.setBackgroundColor(colors[colorPos]);
        return view;
    }
}


而且我想将其扩展到我的Adapter类以更改行颜色。

公共类MyArrayAdapter扩展了SpecialAdapter {..}

可能吗?当前它不显示任何颜色。我没有在Adapter类中设置任何颜色。我需要的是从基类继承行颜色,以便可以将其用于其他适配器类。

这是我的适配器类

public MyArrayAdapter(Activity context, List<MyObject> list) {
        super(context, R.layout.mylayout, list);
        this.context = context;
        this.list = list;
    }

    public View getView(int position, View convertView, ViewGroup parent) {
        View view = null;
        if (convertView == null) {
            LayoutInflater inflator = context.getLayoutInflater();
            view = inflator.inflate(R.layout.mylayout, null);
            final ViewHolder viewHolder = new ViewHolder();
            viewHolder.txtName = (TextView) view.findViewById(R.id.label);
            view.setTag(viewHolder);
        } else {
            view = convertView;
            ((ViewHolder) view.getTag()).txtName.setTag(list.get(position));
        }
        ViewHolder holder = (ViewHolder) view.getTag();
        holder.txtName.setText("Position " + position);
        return view;
    }

最佳答案

据我所知,没有这种通用方法。如果只有2种颜色,则可以使用以下内容。

 @Override
    public View getView(int position, View convertView, ViewGroup parent) {
    View view = super.getView(position, convertView, parent);
    if (position % 2 == 1) {
        view.setBackgroundColor(Color.BLUE);  // you can add any color here
    } else {
        view.setBackgroundColor(Color.CYAN);  // don't like cyan? add another color.
    }

    return view;
    }

09-10 13:20
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