我有个小问题。好吧，让我首先说明我要完成的工作。 我有一个微调器，可以从存储的数组中提取字符串。 像这样，你不需要阅读它:

ArrayAdapter<?> healthadapter = ArrayAdapter.createFromResource(this, R.array.health, android.R.layout.simple_spinner_item);
mHealthSpin = (Spinner) findViewById(R.id.health_spin);
healthadapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
mHealthSpin.setAdapter(healthadapter);

简单且几乎足够了。我想向 Spinner 添加图像。 RadioButton 不是必需的。所以 Spinner 应该弹出并有一个列表:

TEXT     *IMAGE*
TEXT2    *IMAGE*
TEXT3    *IMAGE*

So far I've got a custom SimpleAdapter. Here is the Problem!! :

The text comes up but not the image.

Here is the code:

public class stageadapter extends SimpleAdapter {

    private Context localContext;
    private ArrayList<HashMap<String, Object>> localList;

    public stageadapter(Context context, ArrayList<HashMap<String, Object>> list, int resource, String[] from, int[] to) {
        super(context, list, resource, from, to);
        localContext = context;
        localList = list;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        if (null == convertView) {
            LayoutInflater inflater = (LayoutInflater) localContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            convertView = inflater.inflate(R.layout.stagerow, null);
        }
        TextView name = (TextView) convertView.findViewById(R.id.stage_name);
        name.setText((String) localList.get(position).get("Name"));
        ImageView icon = (ImageView) convertView.findViewById(R.id.stage_icon);

        icon.setImageResource(R.drawable.icon);

        return convertView;
    }

    @Override
    public View getDropDownView(int position, View convertView, ViewGroup parent) {
        if (null == convertView) {
            LayoutInflater inflater = (LayoutInflater) localContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            convertView = inflater.inflate(R.layout.stagerow, null);
        }
        TextView name = (TextView) convertView.findViewById(R.id.stage_name);
        name.setText((String) localList.get(position).get("Name"));
        ImageView icon = (ImageView) convertView.findViewById(R.id.stage_icon);
        icon.setImageResource(R.drawable.icon);

        return convertView;
    }
}

我打算使用 switch 语句为每个名称设置不同的图像。但是我在这里停下来，直到我可以显示任何图像。

我是怎么打电话的:

ArrayList<HashMap<String, Object>> list = new ArrayList<HashMap<String, Object>>();
    HashMap<String, Object> map = new HashMap<String, Object>();
    map.put("Name", "One");
    map.put("Icon", R.drawable.icon);
    list.add(map);

    map = new HashMap<String, Object>();
    map.put("Name", "Two");
    map.put("Icon", R.drawable.icon);
    list.add(map);

    mStageSpin = (Spinner) findViewById(R.id.stage_spin);
    stageadapter adapter = new stageadapter(getApplicationContext(), list, R.layout.stagerow, new String[]{"Name", "Icon"}, new int[]{R.id.stage_name, R.id.stage_icon});
    mStageSpin.setAdapter(adapter);

我的答案在评论中。

最佳答案

删除以下行——它会混淆您的适配器:

healthadapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.main);

        ArrayList<HashMap<String, Object>> list = new ArrayList<HashMap<String, Object>>();
        HashMap<String, Object> map = new HashMap<String, Object>();
        map.put("Name", "One");
        map.put("Icon", R.drawable.icon);
        list.add(map);

        map = new HashMap<String, Object>();
        map.put("Name", "Two");
        map.put("Icon", R.drawable.icon);
        list.add(map);

        Spinner spin = (Spinner) findViewById(R.id.spin);
        myAdapter adapter = new myAdapter(getApplicationContext(), list,
                R.layout.list_layout, new String[] { "Name", "Icon" },
                new int[] { R.id.name, R.id.icon });

        spin.setAdapter(adapter);

    }

    private 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);

        }

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

            if (convertView == null) {
                convertView = getLayoutInflater().inflate(R.layout.list_layout,
                        null);
            }

            HashMap<String, Object> data = (HashMap<String, Object>) getItem(position);

            ((TextView) convertView.findViewById(R.id.name))
                    .setText((String) data.get("Name"));
            ((ImageView) convertView.findViewById(R.id.icon))
                    .setImageResource(R.drawable.icon);

            return convertView;
        }

    }

关于java - 微调器中的 SimpleAdapter、文本和图像，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/3688925/