将枚举Enum作为数据源添加到列表

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这里以Spinner为例

1.首先定义一个枚举类型：

public enum Language {        AUTO_DETECT(""),        AFRIKAANS("af"),        ALBANIAN("sq"),        AMHARIC("am"),        ARABIC("ar"),        ARMENIAN("hy"),        AZERBAIJANI("az"),        BASQUE("eu"),        BELARUSIAN("be"),        BENGALI("bn"),        BIHARI("bh"),        BULGARIAN("bg"),        BURMESE("my"),        CATALAN("ca"),        CHEROKEE("chr"),        CHINESE("zh"),        CHINESE_SIMPLIFIED("zh-CN"),        CHINESE_TRADITIONAL("zh-TW");private String valueStr;private Language(String valueStr) {this.valueStr = valueStr;}//获取值public String value() {return valueStr;}}

注：必须创建构造函数

2.添加布局

<Spinner        android:id="@+id/spinner1"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:paddingLeft="@dimen/activity_vertical_margin"        android:paddingRight="@dimen/activity_vertical_margin" />

3.添加数据源

//SpinnerSpinner mSpinner = (Spinner) findViewById(R.id.spinner1);mSpinner.setAdapter(new ArrayAdapter<Language>(this, android.R.layout.simple_spinner_item, Language.values()));mSpinner.setOnItemSelectedListener(new OnItemSelectedListener() {@Overridepublic void onItemSelected(AdapterView<?> parent, View v,int position, long id) {Language chooseLang = (Language) parent.getItemAtPosition(position);String show = "键："+ chooseLang.name() + ", 值：" + chooseLang.value() + ", 下标：" + chooseLang.ordinal();Toast.makeText(getBaseContext(), show, Toast.LENGTH_LONG).show();}@Overridepublic void onNothingSelected(AdapterView<?> arg0) {}});

注：

Type.name() //获取枚举的名字，相当于键-值对的键；

Type.value() //定义枚举时自定义的方法value()，相当于获取键-值对的值；

Type.ordinal() //获取枚举所在的位置，相当于数组的下标，从0开始；

Type.values() //得到数据集合

Type.valueOf(String arg0) //根据值获取对象

4.稍微复杂一点，自己定义适配器，并显示枚举数据

private class MyListAdapter extends BaseAdapter{@Overridepublic int getCount() {return Language.values().length;<span style="white-space:pre"></span>//大小}@Overridepublic Language getItem(int position) {return Language.values()[position];<span style="white-space:pre"></span>//返回枚举}@Overridepublic long getItemId(int position) {return 0;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {ViewHolder mHolder = null;if (convertView == null) {mHolder = new ViewHolder();convertView = LayoutInflater.from(getBaseContext()).inflate(R.layout.item_enum_data_list, null);<span style="white-space:pre"></span>//item布局mHolder.iv = (ImageView) convertView.findViewById(R.id.item_imv);mHolder.tv = (TextView) convertView.findViewById(R.id.item_tv);convertView.setTag(mHolder);}else {mHolder = (ViewHolder) convertView.getTag();}Language lang = Language.values()[position];mHolder.tv.setText(lang.name());return convertView;}class ViewHolder{ImageView iv;TextView tv;}}

item布局：item_enum_data_list.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:gravity="center_vertical"    android:orientation="horizontal"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingTop="@dimen/activity_vertical_margin" >    <ImageView        android:id="@+id/item_imv"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:src="@drawable/exclamation" />    <TextView        android:id="@+id/item_tv"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:paddingLeft="@dimen/activity_vertical_margin"        android:text="TextView" /></LinearLayout>

5.效果（无图。。(-｡-;)）

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