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采用layoutInflater打气筒创建一个view对象 →ListView

2014-07-29 18:35 387 查看
list_item

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="60dip"
android:gravity="center_vertical"
android:orientation="horizontal" >

<TextView
android:id="@+id/tv_id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="5dip"
android:text="id"
android:textColor="#ff0000"
android:textSize="18sp" />

<LinearLayout
android:layout_width="fill_parent"
android:layout_height="60dip"
android:layout_marginLeft="20dip"
android:gravity="center_vertical"
android:orientation="vertical" >

<TextView
android:id="@+id/tv_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="5dip"
android:text="姓名"
android:textColor="#000000"
android:textSize="18sp" />

<TextView
android:id="@+id/tv_phone"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="5dip"
android:text="电话"
android:textColor="#88000000"
android:textSize="18sp" />
</LinearLayout>

</LinearLayout>

MainActivity
package org.gentry.db;

import java.util.List;

import org.gentry.db.dao.PersonDao;
import org.gentry.db.domain.Person;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
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());
}

private class MyAdapter extends BaseAdapter {

/**
* 控制listview里面总共有多少条目
*/
@Override
public int getCount() {
// TODO Auto-generated method stub
return persons.size(); // 条目个数==集合的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

Person person = persons.get(position); // 得到某个位置对应的person对象
View view = View.inflate(MainActivity.this, R.layout.list_item,
null); // 把xml文件转化成view对象

TextView tv_id = (TextView) view.findViewById(R.id.tv_id); // 一定要在view对象里面寻找孩子的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_phone = (TextView) view.findViewById(R.id.tv_phone);
tv_phone.setText("电话:" + person.getNumber());

return view;
}

}

}
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