StickyListHeaders实现电话本列表效果

效果展示

https://raw.githubusercontent.com/emilsjolander/StickyListHeaders/master/demo.gif

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);}@Overridepublic int getCount() {    return countries.length;}@Overridepublic Object getItem(int position) {    return countries[position];}@Overridepublic 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;}@Overridepublic 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;}}