ExpandInfoAdapter实现二级列表显示转

原创

宁波阿成 2014-08-07 14:58:00 ©著作权

文章标签 android c# 开发语言 ide List 文章分类 HarmonyOS 后端开发

©著作权归作者所有：来自51CTO博客作者宁波阿成的原创作品，请联系作者获取转载授权，否则将追究法律责任

android列表，有时需要显示两级列表，使用Listview不能达到很好的效果，可以使用ExpandInfoAdapter很好的实现二级列表，并且能够自定义相应的列表。下面是我定义二级列表的实例：

其中的列表布局和相应的图片都是自定义的，实现代码如下:

public final static String NAME = "Name:"; 
public final static String PHONE = "Phone:"; 
public final static String SEX = "Sex:"; 
public List<String> group; 
public List<List<String>> child; 
ExpandInfoAdapter adapter; 
@Override 
public void onCreate(Bundle savedInstanceState) { 
super.onCreate(savedInstanceState); 
setContentView(R.layout.main); 
ExpandableListView expandableListView=(ExpandableListView)findViewById(R.id.list); 
initialOther(); 
addItemByValue("WWWW","051782214","man"); 
addItemByValue("ZZZZ","110","mal"); 
addItemByValue("DDDD","132","femal"); 
addItemByValue("FFFFF","11111","femal"); 
adapter = new ExpandInfoAdapter(this); 
expandableListView.setAdapter(adapter); 
} 
public void initialOther(){ 
group = new ArrayList<String>(); 
child = new ArrayList<List<String>>(); 
} 
public void addItemByValue(String n,String c1,String c2){ 
group.add(n); 
List<String> item = new ArrayList<String>(); 
item.add(NAME+n); 
item.add(PHONE+c1); 
item.add(SEX+c2); 
child.add(item); 
} 
public class ExpandInfoAdapter extends BaseExpandableListAdapter { 
Activity activity; 
public ExpandInfoAdapter(Activity a){ 
activity = a; 
} 
@Override 
public Object getChild(int arg0, int arg1) { 
return child.get(arg0).get(arg1); 
}        @Override 
public long getChildId(int arg0, int arg1) { 
return arg1; 
} 
@Override 
public int getChildrenCount(int arg0) { 
return child.get(arg0).size(); 
}        @Override 
public View getChildView(int arg0, int arg1, boolean arg2, View arg3, 
ViewGroup arg4) { 
View view = arg3; 
if (view == null) { 
LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
view = inflater.inflate(R.layout.listview, null); 
LinearLayout layout = (LinearLayout) view 
.findViewById(R.id.layout_013); 
} 
TextView title = (TextView) view.findViewById(R.id.content_001); 
title.setText(child.get(arg0).get(arg1)); 
return view; 
} 
@Override 
public Object getGroup(int arg0) { 
return group.get(arg0); 
}        @Override 
public int getGroupCount() { 
return group.size(); 
}        @Override 
public long getGroupId(int arg0) { 
return arg0; 
}        @Override 
public View getGroupView(int arg0, boolean arg1, View arg2, 
ViewGroup arg3) { 
View view = arg2; 
if (view == null) { 
LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
view = inflater.inflate(R.layout.listview, null); 
LinearLayout layout = (LinearLayout) view 
.findViewById(R.id.layout_013); 
} 
ImageView imageView=(ImageView)view.findViewById(R.id.tubiao); if(arg1) 
{ 
imageView.setBackgroundResource(R.drawable.tubiao_button1); 
}else{ 
imageView.setBackgroundResource(R.drawable.tubiao_button); 
}                 TextView title = (TextView) view.findViewById(R.id.content_001); 
title.setText(getGroup(arg0).toString()); 
return view; 
}              public void onGroupExpanded(int groupPosition){ 
} 
public void onGroupCollapsed(int groupPosition){ 
} 
@Override 
public boolean isChildSelectable(int arg0, int arg1) { 
return true; 
} 
@Override 
public boolean hasStableIds() { 
return false; 
} 
}