Android 自定义Adapter动态更新ListView视图_android的adapt刷新点击的view-优快云博客

本文链接：https://blog.youkuaiyun.com/jintiaozhuang/article/details/8794820

本文介绍了如何在Android中使用自定义Adapter动态更新ListView视图。通过修改适配器的数据并调用`notifyDataSetChanged()`来刷新UI，实现添加或删除条目的功能。

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首先将自定义的适配器的代码列下，主要是构造函数中List<DataBean> list 数据变化了，怎么更新UI的问题

public class SaveShowAdpter extends BaseAdapter {
private Context context = null;
private LayoutInflater listContainer = null;
private List<DataBean> list;
public SaveShowAdpter(Context activity, List<DataBean> list) {
  context = activity;
  listContainer = (LayoutInflater) context
    .getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
  this.list = list;
}

/**

*当list数据发生变化时候开始调用

* removeBean(DataBean dataBean)、 addBean(DataBean dataBean)

*notifyDataSetChanged 通知附属的视图基础数据已经改变,视图应该自动刷新。

*/
public void removeBean(DataBean dataBean) {
  System.out.println("list remove before:"+list.size());
  list.remove(dataBean);
  notifyDataSetChanged(); // notifyDataSetChanged 通知附属的视图基础数据已经改变,视图应该自动刷新。
  System.out.println("list remove after:"+list.size());
}
public void addBean(DataBean dataBean) {
  System.out.println("list remove before:"+list.size());
  list.add(dataBean);
  notifyDataSetChanged();
  System.out.println("list remove after:"+list.size());
}
public int getCount() {
  // TODO Auto-generated method stub
  return list.size();
}

public Object getItem(int position) {
// TODO Auto-generated method stub
return position;
}

public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}

public View getView(int position, View convertView, ViewGroup parent) {
  // TODO Auto-generated method stub
  ListItemView listItemView = new ListItemView();
  if (convertView == null) {
   // 获取list_item布局文件的视图
   convertView = listContainer.inflate(R.layout.newslist_item_focus, null);
   // 获取控件对象

   listItemView.digest = (TextView) convertView
     .findViewById(R.id.newslist_item_digest);
   listItemView.source = (TextView) convertView
     .findViewById(R.id.newslist_item_source);
   // 设置控件集到convertView
   convertView.setTag(listItemView);
  } else {

   listItemView = (ListItemView) convertView.getTag();
  }
  // 设置文字和图片
  DataBean databean = new DataBean();
  databean =list.get(position);
  System.out.println("---"+databean.toString()+list.get(position).toString());
  listItemView.digest.setText(databean.getDetails()+" ");
  listItemView.source.setText(databean.getSource()+" ");
  return convertView;
}

   class ListItemView { // 自定义控件集

   TextView digest;
   TextView source;

}

}