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package com.dream.myapplication;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.TextView;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity implements AdapterView.OnItemSelectedListener {
private ArrayAdapter<String> adapter;
private TextView textView;
@Override
protected void onCreate(Bundle savedInstanceState) {
//加载开始场景
super.onCreate(savedInstanceState);
//加载布局
setContentView(R.layout.activity_main);
//设置显示窗口
textView = (TextView)findViewById(R.id.text_view);
//下拉列表控件
Spinner spinner = (Spinner)findViewById(R.id.a_spiner);
//数据源
List<String> list = new ArrayList<String>();
list.add("华山");
list.add("丽江");
list.add("西藏");
list.add("青岛");
//数组适配器
adapter = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item,list);
//下拉列表设置样式
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
//加载适配器
spinner.setAdapter(adapter);
//spiner设置监听器
spinner.setOnItemSelectedListener(this);
}
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
String cityName = adapter.getItem(position);
textView.setText("你将要去"+cityName);
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
}
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原文地址:http://www.cnblogs.com/sansansan/p/5136362.html