本文实例讲述了Android基于BaseExpandableListAdapter实现的二级列表仿通话记录功能。分享给大家供大家参考，具体如下：
android SDK中带有这样类似的例子，但是那个还是静态数据，没有实际应用价值，参考意义不大。
网上找了很多，还是那样的情况，几乎是同一篇文章，大家转来转去。况且，那篇例子也是静态的数据。
还是自己试试，自己写一个吧。程序读取手机系统的通话记录，按联系人分组，显示到列表。
开发工具：eclipse
运行环境：htc G9 android2.3.3
不多说，先看效果：
展开后的效果：
继续展开的效果：
main.xml：
<?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>
lis_item.xml：
<?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>
这里的也是采用继承BaseExpandableListAdapter来实现，具体请看代码。
主角Activity：
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); } }
更多关于Android相关内容感兴趣的读者可查看本站专题：《Android开发入门与进阶教程》、《Android布局layout技巧总结》、《Android视图View技巧总结》、《Android编程之activity操作技巧总结》、《Android操作json格式数据技巧总结》、《Android资源操作技巧汇总》及《Android控件用法总结》
希望本文所述对大家Android程序设计有所帮助。