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);  }}