Android StickyListHeaders实现电话本列表效果
作者：常利兵
这篇文章主要为大家详细介绍了Android StickyListHeaders实现电话本列表效果，具有一定的参考价值，感兴趣的小伙伴们可以参考一下
本文实例为大家分享了StickyListHeaders电话本列表效果的具体代码，供大家参考，具体内容如下
效果展示
布局文件
与listview使用方式一样,可以在布局文件中直接进行使用
核心代码
oncreat方法
在oncreat方法中初始化控件,并为控件设置数据适配器
StickyListHeadersListView stickyList = (StickyListHeadersListView) findViewById(R.id.list); MyAdapter adapter = new MyAdapter(this); stickyList.setAdapter(adapter);
设置数据适配器
在设置数据适配器的时候,需要先继承BaseAdapter,然后实现StickyListHeadersAdapter接口,最后实现里面为实现的方法
public class MyAdapter extends BaseAdapter implements StickyListHeadersAdapter {
private String[] countries;
private LayoutInflater inflater;
public MyAdapter(Context context) {
inflater = LayoutInflater.from(context);
countries = context.getResources().getStringArray(R.array.countries);
}
@Override
public int getCount() {
return countries.length;
}
@Override
public Object getItem(int position) {
return countries[position];
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if (convertView == null) {
holder = new ViewHolder();
convertView = inflater.inflate(R.layout.test_list_item_layout, parent, false);
holder.text = (TextView) convertView.findViewById(R.id.text);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.text.setText(countries[position]);
return convertView;
}
@Override
public View getHeaderView(int position, View convertView, ViewGroup parent) {
HeaderViewHolder holder;
if (convertView == null) {
holder = new HeaderViewHolder();
convertView = inflater.inflate(R.layout.header, parent, false);
holder.text = (TextView) convertView.findViewById(R.id.text);
convertView.setTag(holder);
} else {
holder = (HeaderViewHolder) convertView.getTag();
}
//set header text as first char in name
String headerText = + countries[position].subSequence(0, 1).charAt(0);
holder.text.setText(headerText);
return convertView;
}
@Override
public long getHeaderId(int position) {
//return the first character of the country as ID because this is what headers are based upon
return countries[position].subSequence(0, 1).charAt(0);
}
class HeaderViewHolder {
TextView text;
}
class ViewHolder {
TextView text;
}
}
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。