在使用Spinner进行下拉列表时，我们一般都会使用字符串数组的方式加ArrayAdapter，取到的列表值就是我们所看到的Text。如果我们想实现网页中select <option value=""></option>这种效果，看到的和取到的值是不一样的怎么办？
方法有好几种，以下是最简单的方法：
1：首先定义一个类：ZxType.java
public class ZxType {
public String key; //用于显示
public String value;//用于数据操作
public ZxType(String key,String value){
this.key = key;
this.value = value;
}
public String toString(){
return key;
}
}
2：ZxzxActivity.java
public class ZxzxActivity extends Activity {
private Spinner spZxzxType = null;
private ArrayAdapter<ZxType> adapter = null;
private ZxType zxTypeArr[] = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_zxzx);
spZxzxType = (Spinner)findViewById(R.id.spZxzxType);
getZxTypeArr();
adapter = new ArrayAdapter<ZxType>(
this,
android.R.layout.simple_spinner_item,
zxTypeArr
);
spZxzxType.setAdapter(adapter);
spZxzxType.setOnItemSelectedListener(listener);
}
private OnItemSelectedListener listener = new OnItemSelectedListener(){
@Override
public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
ZxType zxtype = (ZxType)spZxzxType.getSelectedItem();
String value = zxtype.value;
Toast.makeText(ZxzxActivity.this, value, Toast.LENGTH_SHORT).show();
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
}
};
private void getZxTypeArr(){
zxTypeArr = new ZxType[]{
new ZxType("咨询类别",""),
new ZxType("重点税源模块","cc9890ee22ceff760122df0473210110"),
new ZxType("普通发票类","4028801b1c0bfe55011c0bfe89300002"),
new ZxType("专用发票类","4028801b1c0bfe55011c0bfea3310003"),
new ZxType("个体税收类","4028801b1c0bfe55011c0bfecc940004"),
new ZxType("税务登记类","4028801b1c0bfe55011c0bfeea2f0005"),
new ZxType("涉税资料填写类","4028801b1c0bfe55011c0bfeea2f0006"),
new ZxType("增值税类","4028801b1c0bfe55011c0bfeea2f0007"),
new ZxType("消费税类","4028801b1c0bfe55011c0bfeea2f0008"),
new ZxType("所得税类","4028801b1c0bfe55011c0bfeea2f0009"),
new ZxType("外商投资企业所得税类","4028801b1c0bfe55011c0bfeea2f0010"),
new ZxType("进出口税收类","4028801b1c0bfe55011c0bfeea2f0011"),
new ZxType("减免税类","4028801b1c0bfe55011c0bfeea2f0012"),
new ZxType("税收法规类","4028801b1c0bfe55011c0bfeea2f0013"),
new ZxType("其他类","4028801b1c0bfe55011c0bfeea2f0014"),
new ZxType("纳税申报类","4028801b1c0bfe55011c0bfeea2f0015"),
new ZxType("车辆购置税","4028801b1c0bfe55011c0bfeea2f0016"),
new ZxType("利息税","4028801b1c0bfe55011c0bfeea2f0017")
};
}}
3:activity_zxzx.xml
<LinearLayout
android:layout_marginTop="8dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="50dp"
android:layout_height="wrap_content"
android:text="类别"/>
<Spinner
android:id="@+id/spZxzxType"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/corner_edit"/>
</LinearLayout>