Android 之 Spinner 下拉菜单实现级联

Android 之 Spinner 下拉菜单实现级联效果图如下：默认第一次加载选择原始队列：级联效果图：关键代码给下拉列表选中事件监听绑定Id ： int pos = firsthand_dlbh_pinner.getSelectedItemPosition（）;
firsthand_pdbh_adapter = new ArrayAdapter<String>（context,
android.R.layout.simple_spinner_item, queu_info[pos]）;
firsthand_pdbh_spinner.setAdapter（firsthand_pdbh_adapter）;完整代码：布局文件代码：<？xml version="1.0" encoding="utf-8"？>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" > <TextView
android:id="@+id/firsthand_dlbh"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="60sp"
android:layout_marginTop="20sp" >
</TextView> <Spinner
android:id="@+id/firsthand_dlbh_pinner"
android:layout_width="200sp"
android:layout_height="wrap_content"
android:layout_marginLeft="60sp"
android:layout_marginTop="20sp" >
</Spinner>

<TextView
android:id="@+id/firsthand_pdbh"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="60sp"
android:layout_marginTop="20sp" >
</TextView> <Spinner
android:id="@+id/firsthand_pdbh_pinner"
android:layout_width="200sp"
android:layout_height="wrap_content"
android:layout_marginLeft="60sp"
android:layout_marginTop="20sp" >
</Spinner> <TextView
android:id="@+id/target_dlbh"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="60sp"
android:layout_marginTop="20sp" >
</TextView> <Spinner
android:id="@+id/target_dlbh_spinner"
android:layout_width="200sp"
android:layout_height="wrap_content"
android:layout_marginLeft="60sp"
android:layout_marginTop="20sp" >
</Spinner> <Button
android:id="@+id/diff_manage_operation"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="100sp"
android:layout_marginTop="20sp"
android:text="执行调度"
android:textSize="18sp" >
</Button></LinearLayout>