package?com.sorgs.administrator.spinner;

import?android.app.Activity;
import?android.os.Bundle;
import?android.view.View;
import?android.widget.AdapterView;
import?android.widget.SimpleAdapter;
import?android.widget.Spinner;
import?android.widget.TextView;

import?java.util.ArrayList;
import?java.util.HashMap;
import?java.util.List;
import?java.util.Map;


public?class?MainActivity?extends?Activity{

????private?TextView?textView;
????private?Spinner?spinner;
????private?SimpleAdapter?adapter;
????private?List<Map<String,?Object>>?dataList;

????@Override
????protected?void?onCreate(Bundle?savedInstanceState)?{
????????super.onCreate(savedInstanceState);
????????setContentView(R.layout.activity_main);

????????textView?=?(TextView)?findViewById(R.id.textView);
????????spinner?=?(Spinner)?findViewById(R.id.spinner);
????????textView.setText("您選擇的是城市是北京");
????????dataList?=?new?ArrayList<Map<String,?Object>>();
????????getData();
????????//2.新建ArrayAdapter(數組適配器)
????????adapter=new?SimpleAdapter(this,?dataList,?R.layout.item,?new?String[]{"image","text"},?new?int[]{R.id.image,R.id.text});

????????//3.adapter設置一個下拉列表樣式
????????adapter.setDropDownViewResource(R.layout.item);

????????//4.spinner加載適配器
????????spinner.setAdapter(adapter);

????????//5.spinner設置監聽器
????????spinner.setOnItemSelectedListener(new?Spinner.OnItemSelectedListener(){
????????????public?void?onItemSelected(AdapterView<?>?arg0,?View?arg1,
???????????????????????????????????????int?arg2,?long?arg3)?{
????????????????textView.setText("您選擇的是："?+?adapter.getItem(arg2));
????????????}

????????????public?void?onNothingSelected(AdapterView<?>?arg0)?{
????????????????textView.setText("NONE");
????????????}
????????});

????}

????private?void?getData()?{
????????Map<String,Object>map?=?new?HashMap<String,Object>();
????????map.put("image",?R.mipmap.ic_launcher);
????????map.put("text",?"北京");
????????Map<String,?Object>?map2?=?new?HashMap<String,?Object>();
????????map2.put("image",?R.mipmap.ic_launcher);
????????map2.put("text",?"上海");
????????Map<String,?Object>?map3?=?new?HashMap<String,?Object>();
????????map3.put("image",?R.mipmap.ic_launcher);
????????map3.put("text",?"廣州");
????????Map<String,?Object>?map4?=?new?HashMap<String,?Object>();
????????map4.put("image",?R.mipmap.ic_launcher);
????????map4.put("text",?"深圳");
????????dataList.add(map);
????????dataList.add(map2);
????????dataList.add(map3);
????????dataList.add(map4);
????}


}