Question

我无法通过毕加索＆＃34;到适配器。我必须创建自己的自定义适配器。它甚至可能基于SimpleAdapter。像这样：

aldigim_profil_URL是图片网址

 public class MyAdapter extends SimpleAdapter {

    public MyAdapter(Context context, List<? extends Map<String, ?>> data, int resource, String[] from, int[] to) {
        super(context, data, resource, from, to);
    }

    public View getView(int position, View convertView, ViewGroup parent) {

        View v = super.getView(position, convertView, parent);

        ImageView img = (ImageView) v.getTag();
        if (img == null) {
            img = (ImageView) v.findViewById(R.id.alinan_list_profil_url);
            v.setTag(img);
        }

        String url_test ="http://" + aldigim_profil_URL.toString();
        // get the url from the data you passed to the `Map`
        String url = ((Map)getItem(position)).get(url_test);
        // do Picasso
        Picasso.with(v.getContext()).load(url).into(img);

        // return the view
        return v;
    }
}

我的listadapter是这样的;

contactList是来自Json Websercive的返回图片网址列表

        ListAdapter adapter = new MyAdapter(getActivity(), contactList,
                R.layout.activity_list_alinan_gorevler, new String[]{"Gorevi_Veren", "Gorev_Adi", "Tarih"},
                new int[]{R.id.alinan_list_gorev_veren, R.id.alinan_list_gorev_adi, R.id.alinan_list_tarih});
        listView.setAdapter(adapter);

我的错误是

String url =（（Map）getItem（position））。get（url_test）;

错误：（287,54）错误：不兼容的类型：对象无法转换为String

Answer 1

试试这个

 public class MyAdapter extends SimpleAdapter {

    public MyAdapter(Context context, List<? extends Map<String, ?>> data, int resource, String[] from, int[] to) {
        super(context, data, resource, from, to);
    }

    public View getView(int position, View convertView, ViewGroup parent) {

        View v = super.getView(position, convertView, parent);

        ImageView img = (ImageView) v.getTag();
        if (img == null) {
            img = (ImageView) v.findViewById(R.id.alinan_list_profil_url);
            v.setTag(img);
        }

        String url_test ="http://" + aldigim_profil_URL.toString();
        // get the url from the data you passed to the `Map`
        String url = ((Map)getItem(position)).get(TAG_IMAGE);

        // do Picasso
        Picasso.with(v.getContext()).load(url).into(img);

        // return the view
        return v;
    }
 }

将毕加索传递给listview

1 个答案: