学步园

我在android app中有一个搜索框，通过搜索展示一个ListView，我想在对应的选择项点击之后进入该app的其他activity中,应该怎么做？ 我的代码如下：

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.SimpleAdapter;
import android.widget.TextView;
 
 
public class MainActivity extends Activity {
 
    List<hashmap<string,string>> adp;
    // Array of strings storing country names
    String[] countries = new String[] {
            "India",
            "Pakistan",
            "Sri Lanka",
            "China",
            "Bangladesh",
            "Nepal",
            "Afghanistan",
            "North Korea",
            "South Korea",
            "Japan"
    };
 
 //  代表图片的int指针集合，图片存储在 /res/drawable-ldpi/
    int[] flags = new int[]{
                R.drawable.india,
                R.drawable.pakistan,
                R.drawable.srilanka,
                R.drawable.china,
                R.drawable.bangladesh,
                R.drawable.nepal,
                R.drawable.afghanistan,
                R.drawable.nkorea,
                R.drawable.skorea,
                R.drawable.japan
  
    };
 
    // Array of strings to store currencies 
    String[] currency = new String[]{
        "Indian Rupee",
        "Pakistani Rupee",
        "Sri Lankan Rupee",
        "Renminbi",
        "Bangladeshi Taka",
        "Nepalese Rupee",
        "Afghani",
        "North Korean Won",
        "South Korean Won",
        "Japanese Yen"
    };
 
 
 
 
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
 
 
        // 遍历map获得每一个名称，标示
        List<hashmap<string,string>> aList = new ArrayList<hashmap<string,string>>();
 
        for(int i=0;i<10;i++){
                HashMap<string, string=""> hm = new HashMap<string,string>();
            hm.put("txt", countries[i]);
            hm.put("flag", Integer.toString(flags[i]) );
            hm.put("cur", currency[i]);
            aList.add(hm);
        }
 
        //   中使用的 Keys 
        String[] from = { "flag","txt"};
 
        //   listview_layout 中使用的IDS
        int[] to = { R.id.flag,R.id.txt};
 
        // 怎对每一项创建一个  adapter 
        //  使用 R.layout.listview_layout  定义每一个
        SimpleAdapter adapter = new SimpleAdapter(getBaseContext(), aList, R.layout.autocomplete_layout, from, to);
 
        // 通过 activity_main.xml  配置获得 CustomAutoCompleteTextView 视图
        CustomAutoCompleteTextView autoComplete = ( CustomAutoCompleteTextView) findViewById(R.id.autocomplete);
 
        /**   为 autocompletetextview  定义一个点击项目时间监听*/
        OnItemClickListener itemClickListener = new OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<!--?--> arg0, View arg1, int position, long id) {
 
 
            }
        };
 
        /**   设置事件*/
        autoComplete.setOnItemClickListener(itemClickListener);
 
        /**  设置 adapter */
        autoComplete.setAdapter(adapter);
 
    }
 
    /** 
        回调方法，在activity  被kill掉的时候执行
      主要是用来保存当前activity 的状态
     */
    @Override
    protected void onSaveInstanceState(Bundle outState) {
        TextView tvCurrency = (TextView) findViewById(R.id.tv_currency) ;
        outState.putString("currency", tvCurrency.getText().toString());
        super.onSaveInstanceState(outState);
    }
 
    /** A callback method, which is executed when the activity is recreated 
          回调方法，在activity 被重建的时候执行
  
     */
    @Override
    protected void onRestoreInstanceState(Bundle savedInstanceState) {
        TextView tvCurrency = (TextView) findViewById(R.id.tv_currency) ;
        tvCurrency.setText(savedInstanceState.getString("currency"));
        super.onRestoreInstanceState(savedInstanceState);
    }
 
 
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }
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