Android基于BaseExpandableListAdapter实现的二级列表仿通话记录功能详解

<?xml version="1.0" encoding="utf-8"?>
<linearlayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:orientation="vertical"
 android:layout_width="fill_parent"
 android:layout_height="fill_parent"
 >
 <expandablelistview
 android:layout_width="fill_parent"
 android:layout_height="fill_parent"
 android:id="@+id/list"
 android:groupindicator="@drawable/tubiao_button"
 android:layout_gravity="right"
 android:indicatorright="0px" />
</linearlayout>

<?xml version="1.0" encoding="utf-8"?>
<relativelayout
 xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="fill_parent"
 android:layout_height="fill_parent"
 android:paddingleft="2.0dip"
 >
<imageview
 android:id="@+id/contact"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:src="@drawable/contact"
 android:layout_alignparentleft="true"
 android:layout_centervertical="true"
 android:layout_marginright="10.0dip"
 />
<imageview
 android:id="@+id/open"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:src="@drawable/min"
 android:layout_torightof="@id/contact"
 android:layout_centervertical="true"
 android:layout_marginleft="5.0dip"
 android:layout_marginright="5.0dip"
 />
<textview
   android:id="@+id/name"
   android:textappearance="?android:textappearancelarge"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:layout_marginleft="10.0dip"
   android:layout_margintop="5.0dip"
   android:layout_marginright="10.0dip"
   android:singleline="true"
   android:layout_torightof="@id/open"
   android:layout_aligntop="@id/open"
  />
<imageview
 android:id="@+id/type"
 android:layout_width="wrap_content"
     android:layout_height="wrap_content"
   android:layout_margintop="10.0dip"
   android:layout_marginright="8.0dip"
   android:layout_marginleft="5.0dip"
   android:src="@drawable/call_in"
   android:layout_alignparentright="true"
  />
<textview
 android:id="@+id/count"
 android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:layout_margintop="10.0dip"
   android:layout_marginright="8.0dip"
   android:layout_marginleft="10.0dip"
   android:layout_alignparentright="true"
  />
<textview
  android:id="@+id/number"
  android:textappearance="?android:textappearancesmall"
  android:ellipsize="marquee"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:singleline="true"
  android:layout_below="@id/name"
  android:layout_alignleft="@id/name"
  android:layout_alignwithparentifmissing="true"
  />
<textview
 android:id="@+id/date"
 android:textappearance="?android:textappearancesmall"
   android:ellipsize="marquee"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:singleline="true"
   android:layout_alignparentbottom="true"
   android:layout_alignparentright="true"
  />
</relativelayout>

public class colllogactivity extends activity {
  private expandablelistview listview;
  private myasyncqueryhandler queryhandler;
  private myexpandablelistadapter listadapter;
  private arraylist<contentvalues> group;
  private arraylist<list<contentvalues>> child;
  private static final uri uri = uri.parse("content://call_log/calls");
  private static final string[] projection = { "_id", "number", "date",
      "type", "new", "name" };
  private static final int incoming_type = 1;
  private static final int outgoing_type = 2;
  private static final int missed_type = 3;
  private string currentnumber = "-1";
  @override
  protected void oncreate(bundle savedinstancestate) {
    super.oncreate(savedinstancestate);
    setcontentview(r.layout.main);
    listview = (expandablelistview) findviewbyid(r.id.list);
    queryhandler = new myasyncqueryhandler(getcontentresolver());
    group = new arraylist<contentvalues>();
    child = new arraylist<list<contentvalues>>();
  }
  @override
  protected void onresume() {
    super.onresume();
    startquery();
  }
  private class myexpandablelistadapter extends baseexpandablelistadapter {
    private layoutinflater inflater;
    public myexpandablelistadapter(context context) {
      this.inflater = layoutinflater.from(context);
    }
    @override
    public object getchild(int groupposition, int childposition) {
      return child.get(groupposition).get(childposition);
    }
    @override
    public long getchildid(int groupposition, int childposition) {
      return childposition;
    }
    @override
    public view getchildview(int groupposition, int childposition,
        boolean islastchild, view convertview, viewgroup parent) {
      viewholder holder;
      if (convertview == null) {
        convertview = inflater.inflate(r.layout.list_item, null);
        holder = new viewholder();
        holder.name = (textview) convertview.findviewbyid(r.id.name);
        holder.number = (textview) convertview
            .findviewbyid(r.id.number);
        holder.date = (textview) convertview.findviewbyid(r.id.date);
        holder.count = (textview) convertview.findviewbyid(r.id.count);
        holder.type = (imageview) convertview.findviewbyid(r.id.type);
        holder.open = (imageview) convertview.findviewbyid(r.id.open);
        convertview.settag(holder);
      } else {
        holder = (viewholder) convertview.gettag();
      }
      convertview.setbackgroundcolor(color.rgb(54, 54, 54));
      contentvalues cv = child.get(groupposition).get(childposition);
      string name = cv.getasstring("name");
      string number = cv.getasstring("number");
      string date = cv.getasstring("date");
      int type = cv.getasinteger("type");
      holder.name.settext(name);
      holder.number.settext(number);
      holder.date.settext(date);
      holder.count.setvisibility(view.gone);
      settypeimg(holder.type, type);
      holder.open.setvisibility(view.gone);
      return convertview;
    }
    @override
    public int getchildrencount(int groupposition) {
      return child.get(groupposition).size();
    }
    @override
    public object getgroup(int groupposition) {
      return group.get(groupposition);
    }
    @override
    public int getgroupcount() {
      return group.size();
    }
    @override
    public long getgroupid(int groupposition) {
      return groupposition;
    }
    @override
    public view getgroupview(int groupposition, boolean isexpanded,
        view convertview, viewgroup parent) {
      viewholder holder;
      if (convertview == null) {
        convertview = inflater.inflate(r.layout.list_item, null);
        holder = new viewholder();
        holder.name = (textview) convertview.findviewbyid(r.id.name);
        holder.number = (textview) convertview
            .findviewbyid(r.id.number);
        holder.date = (textview) convertview.findviewbyid(r.id.date);
        holder.count = (textview) convertview.findviewbyid(r.id.count);
        holder.type = (imageview) convertview.findviewbyid(r.id.type);
        holder.open = (imageview) convertview.findviewbyid(r.id.open);
        convertview.settag(holder);
      } else {
        holder = (viewholder) convertview.gettag();
      }
      contentvalues cv = (contentvalues) getgroup(groupposition);
      string name = cv.getasstring("name");
      string number = cv.getasstring("number");
      string date = cv.getasstring("date");
      holder.name.settext(name);
      holder.number.settext(number);
      holder.date.settext(date);
      holder.type.setvisibility(view.gone);
      holder.count.settext("(" + getchildrencount(groupposition) + ")");
      if (isexpanded) {
        holder.open.setimageresource(r.drawable.min);
      } else {
        holder.open.setimageresource(r.drawable.max);
      }
      return convertview;
    }
    @override
    public boolean hasstableids() {
      return false;
    }
    @override
    public boolean ischildselectable(int groupposition, int childposition) {
      return true;
    }
  }
  private class viewholder {
    textview name;
    textview number;
    textview date;
    textview count;
    imageview type;
    imageview open;
  }
  private void settypeimg(imageview imageview, int type) {
    switch (type) {
    case incoming_type:
      imageview.setimageresource(r.drawable.call_in);
      break;
    case outgoing_type:
      imageview.setimageresource(r.drawable.call_out);
      break;
    case missed_type:
      imageview.setimageresource(r.drawable.call_miss);
      break;
    }
  }
  private class myasyncqueryhandler extends asyncqueryhandler {
    public myasyncqueryhandler(contentresolver cr) {
      super(cr);
    }
    @override
    protected void onquerycomplete(int token, object cookie, cursor cursor) {
      if (cursor != null && cursor.getcount() > 0) {
        cursor.movetofirst();
        for (int i = 0; i < cursor.getcount(); i++) {
          cursor.movetoposition(i);
          string name = cursor.getstring(cursor
              .getcolumnindex("name"));
          string number = cursor.getstring(cursor
              .getcolumnindex("number"));
          int type = cursor.getint(cursor.getcolumnindex("type"));
          long date = cursor.getlong(cursor.getcolumnindex("date"));
          contentvalues cv = new contentvalues();
          cv.put("name", name);
          cv.put("number", number);
          cv.put("type", type);
          cv.put("date",
              formattimestampstring(colllogactivity.this, date));
          addgroupitem(cv);
        }
      }
      if (group.size() > 0) {
        setadapter();
      }
    }
  }
  private void addgroupitem(contentvalues cv) {
    string number = cv.getasstring("number");
    if (!currentnumber.equals(number)) {
      group.add(cv);
      addchilditem(number);
      currentnumber = number;
    }
  }
  private void addchilditem(string number) {
    arraylist<contentvalues> list = new arraylist<contentvalues>();
    cursor cursor = getcontentresolver().query(uri, projection,
        "number=" + number, null, null);
    if (cursor != null && cursor.getcount() > 0) {
      cursor.movetofirst();
      for (int i = 0; i < cursor.getcount(); i++) {
        cursor.movetoposition(i);
        string name = cursor.getstring(cursor.getcolumnindex("name"));
        int type = cursor.getint(cursor.getcolumnindex("type"));
        long date = cursor.getlong(cursor.getcolumnindex("date"));
        contentvalues cv = new contentvalues();
        cv.put("name", name);
        cv.put("number", number);
        cv.put("type", type);
        cv.put("date",
            formattimestampstring(colllogactivity.this, date));
        list.add(cv);
      }
    }
    child.add(list);
  }
  private void setadapter() {
    listadapter = new myexpandablelistadapter(colllogactivity.this);
    listview.setadapter(listadapter);
  }
  private void startquery() {
    queryhandler.startquery(1, null, uri, projection, null, null,
        "date desc");
  }
  // 处理日期方法
  private static string formattimestampstring(context context, long when) {
    time then = new time();
    then.set(when);
    time now = new time();
    now.settonow();
    int format_flags = dateutils.format_no_noon_midnight
        | dateutils.format_abbrev_all | dateutils.format_cap_ampm;
    if (then.year != now.year) {
      format_flags |= dateutils.format_show_year
          | dateutils.format_show_date;
    } else if (then.yearday != now.yearday) {
      format_flags |= dateutils.format_show_date;
    } else {
      format_flags |= dateutils.format_show_time;
    }
    return dateutils.formatdatetime(context, when, format_flags);
  }
}