Android 高仿QQ 好友分组列表
实现的效果如下：
用ExpandableListView实现，
先看Activity的代码：
[java]
public class BuddyActivity extends Activity {
ExpandableListView expandablelistview;
//群组名称
private String[] group = new String[] { "在线好友", "我的好友", "我的同事"};
//好友名称
private String[][] buddy = new String[][] {
{ "元芳", "雷丶小易做图", "狄大人"},
{"高太后", "士兵甲", "士兵乙", "士兵丙" },
{ "艺术家", "叫兽", "攻城师", "职业玩家" }};
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_buddy);
expandablelistview= (ExpandableListView) findViewById(R.id.buddy_expandablelistview);
ExpandableListAdapter adapter=new BuddyAdapter(this,group,buddy);
expandablelistview.setAdapter(adapter);
//分组展开
expandablelistview.setOnGroupExpandListener(new OnGroupExpandListener(){
public void onGroupExpand(int groupPosition) {
}
});
//分组关闭
expandablelistview.setOnGroupCollapseListener(new OnGroupCollapseListener(){
public void onGroupCollapse(int groupPosition) {
}
});
//子项单击
expandablelistview.setOnChildClickListener(new OnChildClickListener(){
public boolean onChildClick(ExpandableListView arg0, View arg1,
int groupPosition, int childPosition, long arg4) {
Toast.makeText(BuddyActivity.this,
group[groupPosition]+" : "+buddy[groupPosition][childPosition],
Toast.LENGTH_SHORT).show();
return false;
}
});
}
}
public class BuddyActivity extends Activity {
ExpandableListView expandablelistview;
//群组名称
private String[] group = new String[] { "在线好友", "我的好友", "我的同事"};
//好友名称
private String[][] buddy = new String[][] {
{ "元芳", "雷丶小易做图", "狄大人"},
{"高太后", "士兵甲", "士兵乙", "士兵丙" },
{ "艺术家", "叫兽", "攻城师", "职业玩家" }};
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_buddy);
expandablelistview= (ExpandableListView) findViewById(R.id.buddy_expandablelistview);
ExpandableListAdapter adapter=new BuddyAdapter(this,group,buddy);
expandablelistview.setAdapter(adapter);
//分组展开
expandablelistview.setOnGroupExpandListener(new OnGroupExpandListener(){
public void onGroupExpand(int groupPosition) {
}
});
//分组关闭
expandablelistview.setOnGroupCollapseListener(new OnGroupCollapseListener(){
public void onGroupCollapse(int groupPosition) {
}
});
//子项单击
expandablelistview.setOnChildClickListener(new OnChildClickListener(){
public boolean onChildClick(ExpandableListView arg0, View arg1,
int groupPosition, int childPosition, long arg4) {
Toast.makeText(BuddyActivity.this,
group[groupPosition]+" : "+buddy[groupPosition][childPosition],
Toast.LENGTH_SHORT).show();
return false;
}
});
}
}
ExpandableListView的布局有2个，分别是组的布局和子项（即好友），
先看buddy_listview_group_item.xml
[html]
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/RelativeLayout1"
android:layout_width="match_parent"
android:layout_height="30dip"
android:background="@drawable/group_fold_bg">
