模拟新浪微博随便看看

来源：互联网发布：企业会计准则知乎编辑：程序博客网时间：2024/05/16 11:01

1.MainActivity.java

package cn.edu.bzu.sinalook;

import java.util.ArrayList;
import java.util.List;

import android.app.Activity;
import android.os.Bundle;
import android.widget.ListView;

public class MainActivity extends Activity {

private MyAdapter adapter;
private ListView lv;
private List<ListCell> list;
@Override
protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);

  lv = (ListView) findViewById(R.id.lv);

//  adapter=new MyAdapter(MainActivity.this,list);/*此处必须放置在list数据之下,否则会报空指针异常,原因是此时的list为空*/

  list = new ArrayList<ListCell>();
  //测试数据
  list.add(new ListCell(R.drawable.p3, "瞿惠颖", "2015-05-02", "四级一定要过！！！加油"));
  list.add(new ListCell(R.drawable.p2, "郭珊", "2015-05-02", "要穿漂亮的新衣服！"));
  list.add(new ListCell(R.drawable.p1, "玲玲", "2015-05-02", "五一来了呀！"));
  list.add(new ListCell(R.drawable.p4, "丹阳", "2015-05-02", "看电影喽！"));
  list.add(new ListCell(R.drawable.p6, "如月", "2015-05-02", "好想妈妈呀"));
  list.add(new ListCell(R.drawable.p5, "伟伟", "2015-05-02", "认真学习！"));

  adapter=new MyAdapter(MainActivity.this,list);

  lv.setAdapter(adapter);
}

}

2.activity_main.xml

</LinearLayout>

3.list_cell.xml

<?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="match_parent"
    android:orientation="horizontal"
    android:background="#FFE1FF">

4.listcell.java

package cn.edu.bzu.sinalook;

public class ListCell {

private int iconId;
private String tvName, tvTime, tvContent;

public ListCell() {
  super();
}

public ListCell(int iconId, String tvName, String tvTime,
   String tvContent) {
  super();
  this.iconId = iconId;
  this.tvName = tvName;
  this.tvTime = tvTime;
  this.tvContent = tvContent;
}

public int getIconId() {
return iconId;
}

public void setIconId(int iconId) {
this.iconId = iconId;
}

public String getTvName() {
return tvName;
}

public void setTvName(String tvName) {
this.tvName = tvName;
}

public String getTvTime() {
return tvTime;
}

public void setTvTime(String tvTime) {
this.tvTime = tvTime;
}

public String getTvContent() {
return tvContent;
}

public void setTvContent(String tvContent) {
this.tvContent = tvContent;
}

}

5.MyAdapter.java

package cn.edu.bzu.sinalook;

import java.util.List;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

/**
* @author
* Date: 2015-5-4
* Des: 自定义的适配器,
*
*/
public class MyAdapter extends BaseAdapter {

private List<ListCell> list;
private Context context;

public MyAdapter(Context context, List<ListCell> list) {
  this.context = context;
  this.list = list;
}

public int getCount() {
  return list.size();//列表长度
}

public Object getItem(int arg0) {
return list.get(arg0);//根据arg0 返回列表项
}

public long getItemId(int arg0) {
return arg0;
}

public View getView(int arg0, View arg1, ViewGroup arg2) {

  if (arg1 == null) {
   arg1 = LayoutInflater.from(context).inflate(R.layout.list_cell,null);
  }

  ListCell lc = list.get(arg0);

  ImageView iconId = (ImageView) arg1.findViewById(R.id.ivIcon);
  TextView tvName = (TextView) arg1.findViewById(R.id.tvName);
  TextView tvTime = (TextView) arg1.findViewById(R.id.tvTime);
  TextView tvContent = (TextView) arg1.findViewById(R.id.tvContent);

  iconId.setBackgroundResource(lc.getIconId());
  tvName.setText(lc.getTvName());
  tvTime.setText(lc.getTvTime());
  tvContent.setText(lc.getTvContent());

  return arg1;
}

}

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