package com.it.db; import java.util.List; import com.it.dao.PersonDao; import com.it.domain.Person; import android.os.Bundle; import android.app.Activity; import android.content.Intent; import android.view.View; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.BaseAdapter; import android.widget.ListView; import android.widget.TextView; public class MainActivity extends Activity {  private ListView lv;  private List<Person> persons;  @Override  protected void onCreate(Bundle savedInstanceState) {   super.onCreate(savedInstanceState);   setContentView(R.layout.activity_main);   PersonDao dao=new PersonDao(this);   persons=dao.findAll();   lv=(ListView) findViewById(R.id.lv);   lv.setAdapter(new MyAdapter());   lv.setOnItemClickListener(new OnItemClickListener() {    //点击的数据 传到上一个activity    @Override    public void onItemClick(AdapterView<?> parent, View view,      int position, long id) {     // TODO Auto-generated method stub     Person mperson=persons.get(position);     String number=mperson.getNumber();     Intent data=new Intent();     data.putExtra("number", number);     setResult(0, data);     //点击 即关闭此activity     finish();    }   });  }  private class MyAdapter extends BaseAdapter{   private static final String TAG = "MyAdapter";   /**    * 控制listview里有多少个条目    */   @Override   public int getCount() {    // TODO Auto-generated method stub    return persons.size();   }   @Override   public Object getItem(int position) {    // TODO Auto-generated method stub    return null;   }   @Override   public long getItemId(int position) {    // TODO Auto-generated method stub    return 0;   }   @Override   public View getView(int position, View convertView, ViewGroup parent) {    // TODO Auto-generated method stub    /**     * 采用inflater显示     */    Person person=persons.get(position);    View view=View.inflate(MainActivity.this, R.layout.list_item, null);    TextView tv_id=(TextView) view.findViewById(R.id.tv_id);    tv_id.setText("id:"+person.getId());    TextView tv_name=(TextView) view.findViewById(R.id.tv_name);    tv_name.setText("姓名:"+person.getName());    TextView tv_number=(TextView) view.findViewById(R.id.tv_number);    tv_number.setText("电话:"+person.getNumber());    return view;    }    /**     * 不用inflater     *    Log.i(tag, "位置"+position);   //看效果    TextView tv=new TextView(getApplicationContext());    tv.setTextSize(20);    tv.setTextColor(Color.BLACK);    //每个位置上的条目    Person person=persons.get(position);    tv.setText(person.toString());    return tv;   }*/  } }