简单适配器

这个简单适配器呢支持两个控件 比如一个图片和一个文本区，本次例子就是以此为例

首先写好xml文件

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:orientation="horizontal">
<ImageView
    android:layout_marginLeft="20dp"
    android:layout_width="100dp"
    android:layout_height="100dp"
    android:id="@+id/iv_imageView"/>

    <TextView
        android:textSize="30sp"
        android:layout_marginTop="40dp"
        android:layout_marginLeft="60dp"
        android:id="@+id/tv_textView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"

        />
</LinearLayout>

其次写好简单数组适配器

List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();
for(int i = 0 ; i<icom.length;i++)
{
    Map<String, Object> item= new HashMap<String,Object>();
    item.put("icon",icom[i]);
    item.put("name",starArry[i]);
    list.add(item);
}
SimpleAdapter simpleAdapter = new SimpleAdapter
(this,list,R.layout.item_drowdown,new String[]{"icon","name"},
new int[]{R.id.iv_imageView,R.id.tv_textView});

再者找到载体Spinner
并设置简单数组

Spinner sp = findViewById(R.id.sp_spnner2);
sp.setPrompt("请选择行星");
sp.setAdapter(simpleAdapter);
sp.setSelection(0);
sp.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
    @Override
    public void onItemSelected(AdapterView<?> parent, View view, int position, long id)
     {Toast.makeText(MainActivity.this, "你选择的是" + starArry[position],
     Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onNothingSelected(AdapterView<?> parent) {

    }
});

这就大功告成了