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package com.example.administrator.spinner; import android.content.Context; import android.support.v7.app.ActionBarActivity; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.SimpleAdapter; import android.widget.Spinner; import android.widget.TextView; import android.widget.Toast; import java.lang.reflect.Array; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.HashMap; public class MainActivity extends ActionBarActivity implements Spinner.OnItemSelectedListener{ private TextView textView; private Spinner spinner; private List data; private List<Map> data_list; private Context mContext; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); mContext = this; textView = (TextView)findViewById(R.id.text); spinner = (Spinner)findViewById(R.id.spinner); //1 数据源 data = new ArrayList(); data.add("北京"); data.add("上海"); data.add("广州"); data.add("重庆"); data_list = new ArrayList<Map>(); //2 适配器 ArrayAdapter adapter = new ArrayAdapter(this,android.R.layout.simple_list_item_1,data); SimpleAdapter s_adapter = new SimpleAdapter(this,getData(),R.layout.item,new String[]{"text","pic"},new int[]{R.id.text,R.id.pic}); //3 适配器样式 //adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); adapter.setDropDownViewResource(R.layout.item); //4 注入适配器 // spinner.setAdapter(adapter); spinner.setAdapter(s_adapter); spinner.setOnItemSelectedListener(this); } @Override public void onItemSelected(AdapterView parent, View view, int position, long id) { textView.setText(spinner.getItemAtPosition(position).toString()); } @Override public void onNothingSelected(AdapterView parent) { Toast.makeText(mContext,"NotingSelected",Toast.LENGTH_SHORT); } private List<Map> getData(){ Mapmap = new HashMap(); map.put("text","上海"); map.put("pic",R.mipmap.ic_launcher); data_list.add(map); map = new HashMap(); map.put("text","北京"); map.put("pic",R.mipmap.ic_launcher); data_list.add(map); map = new HashMap(); map.put("text","深圳"); map.put("pic",R.mipmap.ic_launcher); data_list.add(map); map = new HashMap(); map.put("text","广州"); map.put("pic",R.mipmap.ic_launcher); data_list.add(map); return data_list; } }
item.xml