安卓学习-界面-ui-Spinner

 属性

属性	方法	说明
android:entries		设置下拉内容
android:dropDownHorizontalOffset		下拉框的水平偏移，没效果
android:dropDownVerticalOffset		下拉框的垂直偏移，没效果
android:dropDownWidth		下拉列表的宽度，没效果
android:popupBackground		下拉列表的背景色，没效果
android:prompt		下拉列表的提示信息

例子1

直接指定android:entries，就比较简陋的，但一般的选择框已经够用了

items.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string-array name="ys">
        <item >红色</item>
        <item >绿色</item>
        <item >黄色</item>
    </string-array>
</resources>

activity_main.xml

<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"
    tools:context="${relativePackage}.${activityClass}" >

    <Spinner
        android:id="@+id/spinner1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true" 
        android:entries="@array/ys"
        />

</RelativeLayout>

例子2：带图片的

直接用了SimpleAdapter，当然也可以直接继承BaseAdapter，反正和ListView一样

item.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" 
    android:padding="10dp"
    >

    <ImageView
        android:id="@+id/imageView1"
        android:layout_width="50dp"
        android:layout_height="50dp" />

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Large Text"
        android:textAppearance="?android:attr/textAppearanceLarge" />

</LinearLayout>

activity_main.xml

<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"
    tools:context="${relativePackage}.${activityClass}" >

    <Spinner
        android:id="@+id/spinner1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true" 
        android:entries="@array/ys"
        />

</RelativeLayout>

MainActivity.java

public class MainActivity extends Activity {

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

        List<Map<String, Object>> items = new ArrayList<Map<String, Object>>();
        Map<String, Object> map1 = new HashMap<String, Object>();
        map1.put("pic", R.drawable.myd_1);
        map1.put("name", "满意");
        items.add(map1);
        Map<String, Object> map2 = new HashMap<String, Object>();
        map2.put("pic", R.drawable.myd_2);
        map2.put("name", "一般");
        items.add(map2);
        Map<String, Object> map3 = new HashMap<String, Object>();
        map3.put("pic", R.drawable.myd_3);
        map3.put("name", "不满意");
        items.add(map3);

        SimpleAdapter sa = new SimpleAdapter(MainActivity.this, items,
                R.layout.item, new String[] { "pic", "name" }, new int[] {
                        R.id.imageView1, R.id.textView1 });
        Spinner spinner=(Spinner)findViewById(R.id.spinner1);
        spinner.setAdapter(sa);
    }
}