在activity_main_xml
MainActivity中：
package com.lianyun.spinnerdemo; import android.os.Bundle; import android.app.Activity; import android.view.Menu; import android.view.View; import android.widget.AdapterView; import android.widget.AdapterView.OnItemSelectedListener; import android.widget.ArrayAdapter; import android.widget.Spinner; import android.widget.Toast; public class MainActivity extends Activity { private Spinner spinner1; private Spinner spinner2; //一级数据 private String[] province={"陕西省","河北省","山西省","山东省"}; // 定义二级数据 private String[][] str = { { "渭南", "商洛", "榆林", "西安" }, { "石家庄", "保定", "邯郸", "张家口" }, { "太原", "晋中", "吕梁", "临汾" }, { "济南", "青岛", "烟台", "日照" } }; private ArrayAdapter<String> provinceAdapter; private ArrayAdapter<String> cityAdapter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); initView(); } private void initView() { spinner1 = (Spinner) findViewById(R.id.spinner1); spinner2 = (Spinner) findViewById(R.id.spinner2); provinceAdapter=new ArrayAdapter<String>(MainActivity.this, android.R.layout.simple_expandable_list_item_1,province); spinner1.setAdapter(provinceAdapter); spinner1.setOnItemSelectedListener(new OnItemSelectedListener() { @Override public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2, long arg3) { cityAdapter = new ArrayAdapter<String>(MainActivity.this, android.R.layout.simple_expandable_list_item_1, str[arg2]); spinner2.setAdapter(cityAdapter); } @Override public void onNothingSelected(AdapterView<?> arg0) { } }); spinner2.setOnItemSelectedListener(new OnItemSelectedListener() { @Override public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2, long arg3) { String s = arg0.getItemAtPosition(arg2).toString(); Toast.makeText(MainActivity.this, s, Toast.LENGTH_LONG).show(); } @Override public void onNothingSelected(AdapterView<?> arg0) { } }); } }
