android中spinner初始化后，点一个spinner怎么让另一个spinner的默认值改变

[yafeiok]

android中spinner初始化后，点一个spinner怎么让另一个spinner的默认值改变 选另个spinner的值 改变这个的默认值


我是这样设置的 但是报错了；

package cn.anycall.spinner;

import java.util.ArrayList;
import java.util.HashMap;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Spinner;

public class TestSpinnerActivity extends Activity {
    /** Called when the activity is first created. */
	Spinner spinner1;
	Spinner spinner2;
	private String[] quyu1 = {"全部区域","海曙","江东"," 江北"," 鄞州"," 其他"};
	private String[] quyu2 = {"全部区域1","海曙1","江东1"," 江北1"," 鄞州1"," 其他1"};
	private ArrayAdapter<String> spada1;
	private ArrayAdapter<String> spada2;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        spinner1 = (Spinner)findViewById(R.id.spinner1);
        spinner2 = (Spinner)findViewById(R.id.spinner2);
        
       
        spada1 = new ArrayAdapter<String>(this,
        		android.R.layout.simple_spinner_item, quyu1);
		// 设置下拉列表风格
        spada1.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
		// 将adapter添加到spinner中
        spinner1.setAdapter(spada1);
		
        spinner1.setSelection(1,false);
		
		
		// 添加Spinner事件监听
        spinner1.setOnItemSelectedListener(new Spinner.OnItemSelectedListener() {

			public void onItemSelected(AdapterView<?> arg0, View arg1,
					int arg2, long arg3) {
				// TODO Auto-generated method stub
				// 设置显示当前选择的项
				arg0.setVisibility(View.VISIBLE);
				//选择默认值不让执行
				spinner2.setSelection(2, false);
			}

			public void onNothingSelected(AdapterView<?> arg0) {
				// TODO Auto-generated method stub
				
			}
        });
        
        spada2 = new ArrayAdapter<String>(this,
        		android.R.layout.simple_spinner_item, quyu2);
		// 设置下拉列表风格
        spada2.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
		// 将adapter添加到spinner中
        spinner2.setAdapter(spada2);
		
        spinner2.setSelection(1,false);
		
		
		// 添加Spinner事件监听
        spinner2.setOnItemSelectedListener(new Spinner.OnItemSelectedListener() {

			public void onItemSelected(AdapterView<?> arg0, View arg1,
					int arg2, long arg3) {
				// TODO Auto-generated method stub
				// 设置显示当前选择的项
				arg0.setVisibility(View.VISIBLE);
				//选择默认值不让执行
				spinner1.setSelection(1, false);
			}

			public void onNothingSelected(AdapterView<?> arg0) {
				// TODO Auto-generated method stub
				
			}
        });
        
        
        
    }
}

main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<TextView  
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="@string/hello"
    />
    <Spinner android:id="@+id/spinner1"
     android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 

    />
     <Spinner android:id="@+id/spinner2"
     android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    />
</LinearLayout>