Android开发之自定义Spinner

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" >
    <item android:state_pressed="true"   
        android:drawable="@drawable/spinner_press" /><!--按下时效果-->  
    <item android:state_pressed="false"   
        android:drawable="@drawable/spinner" /><!--默认效果-->   
</selector>

<!-- spinner -->
<style name="spinner_style">
    <item name="android:background">@drawable/spinner_selector</item>
    <item name="android:paddingLeft">5dip</item>
</style>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <Spinner
        android:id="@+id/field_item_spinner_content"
        style="@style/spinner_style"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:layout_margin="10dp" />
</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<CheckedTextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@android:id/text1"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:gravity="center_vertical"
    android:paddingLeft="5dip"
    android:paddingRight="5dip"
    android:singleLine="true"
    android:textColor="#808080" />

<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:padding="10dip"
    android:textColor="#000000"
    android:textSize="15dp" >
</TextView>

<string-array name="meinv">
   <item>美女1</item>
   <item>美女2</item>
   <item>美女3</item>
   <item>美女4</item>
   <item>美女5</item>
   <item>美女6</item>
   <item>美女7</item>
</string-array>

public class MainActivity extends AppCompatActivity {

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


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

        //资源转[]
        String meinv[] = getResources().getStringArray(R.array.meinv);

        //构造ArrayAdapter
        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
                R.layout.simple_spinner_item, meinv);
        //设置下拉样式以后显示的样式
        adapter.setDropDownViewResource(R.layout.my_drop_down_item);

        spinner.setAdapter(adapter);
    }
}