Android Spinner 使用带有 ID 的数组来处理图像资源

Question

好吧，我正在尝试仅使用图像来制作自定义微调器。我在值文件夹的 .xml 文件上定义了一个数组，其中有图像项目作为资源。 我想用这些图像填​​充旋转器.. 这是我到目前为止所做的一切:

在 res/drawable-mdpi

我有以下图像:

remove_minus_circle_black.png
删除_减号_圆_红色.png
删除_减号.png
删除_减号_sign2.png
删除_minus_sign3.png

位于 res/values/arrays.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <array name="minusIcons">
       <item>@drawable/remove_minus_circle_black</item>
       <item>@drawable/remove_minus_circle_red</item>
       <item>@drawable/remove_minus_sign</item>
       <item>@drawable/remove_minus_sign2</item>
       <item>@drawable/remove_minus_sign3</item>

   </array>

    <array name="directionIcons">

   </array>

</resources>

位于 res/layout/row.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal">
    <ImageView
        android:id="@+id/icon"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
    />
 </LinearLayout>

现在是我尝试使用自定义适配器将图像添加到微调器的代码( Activity 本身):

public class Definicoes extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_definicoes);

        Spinner spinner = (Spinner) findViewById(R.id.minusSpinner);

        int[] array = getResources().getIntArray(R.array.minusIcons);
        String [] objects = new String[array.length];
        for(int i = 0; i != array.length; i++){
            objects[i] = "" + array[i];
        }

        spinner.setAdapter(new MyAdapter(Definicoes.this, R.id.minusSpinner, objects)); 

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.definicoes, menu);
        return true;
    }


    class MyAdapter extends ArrayAdapter<String>{

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

        @Override
        public View getDropDownView(int position, View convertView,ViewGroup parent) {
            return getCustomView(position, convertView, parent);
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            return getCustomView(position, convertView, parent);
        }

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

            LayoutInflater inflater=getLayoutInflater();
            View row=inflater.inflate(R.layout.row, parent, false);


            ImageView icon = (ImageView) row.findViewById(R.id.icon);
            icon.setImageResource(Integer.parseInt(objects[position]));

            return row;
         }
     }


}

问题/错误:我打开 Activity ，然后单击微调器，但那里什么也没有! 预先非常感谢大家!我想我可能做错了什么，从未使用过自定义适配器......

Answer 1

使用此找到了解决方案:

ImageView icon = (ImageView) row.findViewById(R.id.icon);

TypedArray imgs = getResources().obtainTypedArray(R.array.minusIcons);
icon.setImageResource(imgs.getResourceId(position, -1));

并将数组类型更改为字符串数组，它起作用了:P