ArrayAdapter

layout/item_select.xml

<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="50dp"
    android:gravity="center"
    android:textColor="#0000ff"
    android:textSize="17sp"
    android:text="火星"/>

    <Spinner
        android:id="@+id/sp_dropdown"
        android:layout_width="match_parent"
        android:layout_height="19dp"
        android:spinnerMode="dropdown"/>

	private Spinner sp_dropdown;
    private static final String[] starArray = {"金星", "水星", "木星","地球", "木星", "土星"};

 	ArrayAdapter<String> starArrayAdapter = new ArrayAdapter<>(this, R.layout.item_select, starArray);
    sp_dropdown.setAdapter(starArrayAdapter);

SimpleAdapter

    private static final int[] iconArray = {
            R.drawable.shuixing, R.drawable.tuxing,
            R.drawable.muxing, R.drawable.diqiu,
            R.drawable.huoxing, R.drawable.jinxing,
    };
    private static final String[] starArray = {"金星", "水星", "木星", "地球", "木星", "土星"};

        List<Map<String, Object>> list = new ArrayList<>();

        for (int i = 0; i < iconArray.length; i++) {
            Map<String, Object> item = new HashMap<>();
            item.put("icon", iconArray[i]);
            item.put("name", starArray[i]);

            list.add(item);
        }
        SimpleAdapter starSimpleAdapter = new SimpleAdapter(this, list,
                R.layout.item_simple,
                new String[]{"icon", "name"},
                new int[]{R.id.iv_icon, R.id.tv_name});

        sp_dropdown.setAdapter(starSimpleAdapter);
        sp_dropdown.setSelection(0);
        sp_dropdown.setOnItemSelectedListener(this);

案例代码