Android ListView 条目多样式展示实例详解

 <ListView    android:id="@+id/main_listview"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    />

package com.bwei.test.BaseAdapter;import java.util.List;import com.bwei.test.R;import com.bwei.test.bean.News;import com.nostra13.universalimageloader.core.DisplayImageOptions;import com.nostra13.universalimageloader.core.ImageLoader;import android.R.color;import android.R.layout;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;public class MyBaseAdapter extends BaseAdapter {  private Context context;  private List<News> newlist;  //ImageLoader  private DisplayImageOptions Options;  //定义样式常量，注意常量值要从0开始  private static final int TYPE_LISTVIEW_NORMAL = 0;  private static final int TYPE_LISTVIEW_NO_PIC = 1;  public MyBaseAdapter(Context context, List<News> newlist,      DisplayImageOptions options) {    super();    this.context = context;    this.newlist = newlist;    Options = options;  }  @Override  public int getCount() {    //ListView的总共条数    return newlist.size();  }  @Override  public Object getItem(int arg0) {    // TODO Auto-generated method stub    return null;  }  @Override  public long getItemId(int arg0) {    // TODO Auto-generated method stub    return 0;  }  /*   * 注意我们要填充的布局个数和我们要展示的样式个数一样   * 最好一个样式一个填充布局   *    * */  @Override  public View getView(int position, View convertView, ViewGroup parent) {    // TODO Auto-generated method stub    // 获取当前条目的类型    int itemViewType = getItemViewType(position);    ViewHolder viewHolder;    if (convertView==null) {      viewHolder=new ViewHolder();      switch (itemViewType) {      case TYPE_LISTVIEW_NORMAL:        convertView=LayoutInflater.from(context).inflate(R.layout.title_pic, null);        viewHolder.imageView=(ImageView) convertView.findViewById(R.id.imageView1);        ImageLoader.getInstance().displayImage(newlist.get(position).getImgs(), viewHolder.imageView,Options);        convertView.setTag(viewHolder);        break;      case TYPE_LISTVIEW_NO_PIC:        convertView=LayoutInflater.from(context).inflate(R.layout.title, null);        convertView.setTag(viewHolder);        break;      default:        break;      }      viewHolder.textcopyright=(TextView) convertView.findViewById(R.id.copyright);      viewHolder.texttime=(TextView) convertView.findViewById(R.id.data);      viewHolder.texttitle=(TextView) convertView.findViewById(R.id.title);  viewHolder.texttitle.setText(      newlist.get(position).getTitle());  viewHolder.texttime.setText(      newlist.get(position).getPubDate());  viewHolder.textcopyright.setText(      newlist.get(position).getCopyright());    } else {      viewHolder=(ViewHolder) convertView.getTag();      switch (itemViewType) {      case TYPE_LISTVIEW_NORMAL:ImageLoader.getInstance().displayImage(       newlist.get(position).getImgs(),             viewHolder.imageView,Options);        break;      case TYPE_LISTVIEW_NO_PIC:        break;      default:        break;      }viewHolder.texttitle.setText(      newlist.get(position).getTitle());viewHolder.texttime.setText(      newlist.get(position).getPubDate());viewHolder.textcopyright.setText(      newlist.get(position).getCopyright());    }    return convertView;  }  /**   * 获取具体的某个索引值下的条目的条目类型   */  @Override  public int getItemViewType(int position) {    // TODO Auto-generated method stub    //判断以什么结束的属性    if ( newlist.get(position).getImgs().endsWith(".jpg")) {      return TYPE_LISTVIEW_NORMAL;    }    return TYPE_LISTVIEW_NO_PIC;  }  /**   * 获取listView条目类别的个数（样式）   */  @Override  public int getViewTypeCount() {    // TODO Auto-generated method stub    return 2;  }  //容器  class ViewHolder{      ImageView imageView;      TextView texttitle,textcopyright,texttime;}}