Android 高仿QQ 好友分組列表
阿新 • • 發佈：2019-02-07
實現的效果如下：
用ExpandableListView實現，
先看Activity的程式碼：
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public class BuddyActivity extends Activity {
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ExpandableListView expandablelistview;
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//群組名稱
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private String[] group = new String[] { "線上好友", "我的好友", "我的同事"};
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//好友名稱
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private String[][] buddy = new String[][] {
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{ "元芳", "雷丶小賤", "狄大人"},
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{"高太后", "士兵甲", "士兵乙", "士兵丙" },
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{ "藝術家", "叫獸", "攻城師", "職業玩家" }};
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public void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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requestWindowFeature(Window.FEATURE_NO_TITLE);
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setContentView(R.layout.activity_buddy);
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expandablelistview= (ExpandableListView) findViewById(R.id.buddy_expandablelistview);
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ExpandableListAdapter adapter=new BuddyAdapter(this,group,buddy);
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expandablelistview.setAdapter(adapter);
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//分組展開
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expandablelistview.setOnGroupExpandListener(new OnGroupExpandListener(){
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public void onGroupExpand(int groupPosition) {
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}
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});
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//分組關閉
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expandablelistview.setOnGroupCollapseListener(new OnGroupCollapseListener(){
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public void onGroupCollapse(int groupPosition) {
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}
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});
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//子項單擊
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expandablelistview.setOnChildClickListener(new OnChildClickListener(){
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public boolean onChildClick(ExpandableListView arg0, View arg1,
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int groupPosition, int childPosition, long arg4) {
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Toast.makeText(BuddyActivity.this,
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group[groupPosition]+" : "+buddy[groupPosition][childPosition],
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Toast.LENGTH_SHORT).show();
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return false;
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}
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});
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}
- }
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<?xml version="1.0" encoding="utf-8"?>
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<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
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android:id="@+id/RelativeLayout1"
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android:layout_width="match_parent"
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android:layout_height="30dip"
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android:background="@drawable/group_fold_bg">
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<ImageView
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android:id="@+id/buddy_listview_image"
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:layout_alignParentLeft="true"
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android:layout_centerVertical="true"
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android:layout_marginLeft="10dp"
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android:src="@drawable/group_fold_arrow" />
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<TextView
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android:id="@+id/buddy_listview_group_name"
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:layout_centerVertical="true"
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android:layout_alignTop="@+id/buddy_listview_image"
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android:layout_toRightOf="@+id/buddy_listview_image"
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android:text="分組名稱" />
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<TextView
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android:id="@+id/buddy_listview_group_num"
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:layout_alignParentRight="true"
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android:layout_centerVertical="true"
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android:layout_marginRight="10dp"
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android:text="[10/10]" />
- </RelativeLayout>
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<?xml version="1.0" encoding="utf-8"?>
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<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
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android:layout_width="match_parent"
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android:layout_height="40dip" >
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<ImageView
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android:id="@+id/buddy_listview_child_avatar"
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android:layout_width="40dip"
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android:layout_height="40dip"
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android:layout_alignParentLeft="true"
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android:layout_alignParentTop="true"
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android:layout_marginLeft="10dp"
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android:src="@drawable/avatar" />
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<TextView
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android:id="@+id/buddy_listview_child_nick"
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:layout_alignParentTop="true"
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android:layout_toRightOf="@+id/buddy_listview_child_avatar"
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android:text="暱稱"
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android:textSize="16sp" />
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<TextView
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android:id="@+id/buddy_listview_child_trends"
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:layout_alignLeft="@+id/buddy_listview_child_nick"
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android:layout_alignParentBottom="true"
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android:text="該好友暫時沒有新動態"
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android:textSize="12sp" />
- </RelativeLayout>
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public class BuddyAdapter extends BaseExpandableListAdapter {
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private String[] group;
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private String[][] buddy;
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private Context context;
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LayoutInflater inflater;
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public BuddyAdapter(Context context,String[] group,String[][] buddy){
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this.context=context;
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inflater = LayoutInflater.from(context);
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this.group=group;
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this.buddy=buddy;
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}
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public Object getChild(int groupPosition, int childPosition) {
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return buddy[groupPosition][childPosition];
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}
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public long getChildId(int groupPosition, int childPosition) {
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return childPosition;
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}
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public View getChildView(int groupPosition, int childPosition, boolean arg2, View convertView,
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ViewGroup arg4) {
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convertView = inflater.inflate(R.layout.buddy_listview_child_item, null);
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TextView nickTextView=(TextView) convertView.findViewById(R.id.buddy_listview_child_nick);
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nickTextView.setText(getChild(groupPosition, childPosition).toString());
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return convertView;
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}
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public int getChildrenCount(int groupPosition) {
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return buddy[groupPosition].length;
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}
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public Object getGroup(int groupPosition) {
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return group[groupPosition];
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}
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public int getGroupCount() {
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return group.length;
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}
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public long getGroupId(int groupPosition) {
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return groupPosition;
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}
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public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup arg3) {
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convertView = inflater.inflate(R.layout.buddy_listview_group_item, null);
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TextView groupNameTextView=(TextView) convertView.findViewById(R.id.buddy_listview_group_name);
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groupNameTextView.setText(getGroup(groupPosition).toString());
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ImageView image = (ImageView) convertView.findViewById(R.id.buddy_listview_image);
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image.setImageResource(R.drawable.group_unfold_arrow);
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//更換展開分組圖片
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if(!isExpanded){
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image.setImageResource(R.drawable.group_fold_arrow);
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}
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return convertView;
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}
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public boolean hasStableIds() {
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return true;
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}
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// 子選項是否可以選擇
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public boolean isChildSelectable(int arg0, int arg1) {
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// TODO Auto-generated method stub
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return true;
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}
- }