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例如,如果我必须创建有关食物类型的自定义列表视图,则在每个 list_item 中都包含食物类型徽标、食物类型名称。如果我将食物类型名称存储在字符串资源中,并将每种食物类型的图片存储在可绘制对象中。

1)如何从drawable中获取图片并设置为列表视图?2)如何获取与食物类型名称匹配的图片

提前谢谢你。

public class FoodListActivity extends ListActivity {

    private CustomListAdapter listAdapter;
    private String[] food_type_name;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.foodlistholder);

       food_type_name = getResources().getStringArray(R.array.food_name_array);


        listAdapter = new CustomListAdapter(this, R.layout.list_item_food, food_type_name);



        setListAdapter(listAdapter);


    private class CustomListAdapter extends ArrayAdapter<String>{

        private String[] items;

        public CustomListAdapter(Context context, int textViewResourceId,
                String[] items) {
            super(context, textViewResourceId, items);
            this.items = items;
        }


        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            View v = convertView;
            if(v == null){
                LayoutInflater  vi = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
                v = vi.inflate(R.layout.list_item_food, null);
            }

            TextView foodNameStr = (TextView)v.findViewById(R.id.food_name_txt);

            foodNameStr.setText(items[position]);
                //How to set Image view form drawable, which match the food's type name

        return v;


    }

  }

}
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1 回答 1

2

就像您通过设置文本所做的那样,但是对于 ImageView。

ImageView foodPhoto = (ImageView)v.findViewById(R.id.food_photo);
foodPhoto.setImageDrawable(foodDrawable);

您只需要创建一个可绘制 id 列表即可知道要使用哪个可绘制对象。

于 2012-01-06T12:22:59.223 回答