实例介绍
【实例截图】
【核心代码】
package com.example.zexlistview; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import android.content.Context; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.BaseExpandableListAdapter; import android.widget.ImageView; import android.widget.SimpleAdapter; import android.widget.TextView; import android.widget.Toast; public class ExAdapter extends BaseExpandableListAdapter implements OnItemClickListener { private GridlistView gridlistView; private LayoutInflater layoutInflater; private SimpleAdapter simpleAdapter; private Context context; private List<TreeNode> treeNodes = new ArrayList<ExAdapter.TreeNode>(); public ExAdapter(Context context) { this.context = context; layoutInflater = layoutInflater.from(context); } static public class TreeNode { Object parent; Integer parentImg; List<Map<String, Object>> childList = new ArrayList<Map<String, Object>>(); } public List<TreeNode> getTreeNode() { return treeNodes; } public void updateTreeNode(List<TreeNode> nodes) { this.treeNodes = nodes; } public void removeAll() { treeNodes.clear(); } /** * @param groupPosition * @param childPosition * @return */ @Override public Object getChild(int groupPosition, int childPosition) { // TODO Auto-generated method stub return treeNodes.get(groupPosition).childList.get(childPosition); } /** * @param groupPosition * @param childPosition * @return */ @Override public long getChildId(int groupPosition, int childPosition) { // TODO Auto-generated method stub return childPosition; } /** * @param groupPosition * @param childPosition * @param isLastChild * @param convertView * @param parent * @return */ @Override public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) { if (convertView == null) { convertView = layoutInflater.inflate(R.layout.gridview, null); } gridlistView = (GridlistView) convertView.findViewById(R.id.gridview); gridlistView.setAdapter(getMeauAdapter(groupPosition)); gridlistView.setOnItemClickListener(this); return convertView; } /** * @param groupPosition * @return */ @Override public int getChildrenCount(int groupPosition) { // TODO Auto-generated method stub return 1; } /** * @param groupPosition * @return */ @Override public Object getGroup(int groupPosition) { // TODO Auto-generated method stub return treeNodes.get(groupPosition).parent; } /** * @return */ @Override public int getGroupCount() { // TODO Auto-generated method stub return treeNodes.size(); } /** * @param groupPosition * @return */ @Override public long getGroupId(int groupPosition) { // TODO Auto-generated method stub return groupPosition; } public Integer getGroupImg(int groupPosition) { return treeNodes.get(groupPosition).parentImg; } /** * @param groupPosition * @param isExpanded * @param convertView * @param parent * @return */ @Override public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) { if (convertView == null) { convertView = layoutInflater.inflate(R.layout.groupitem, null); } ImageView groupImg = (ImageView) convertView .findViewById(R.id.group_img); TextView groupTv = (TextView) convertView.findViewById(R.id.group_tv); groupImg.setImageResource(getGroupImg(groupPosition)); groupTv.setText(getGroup(groupPosition).toString()); return convertView; } /** * @return */ @Override public boolean hasStableIds() { // TODO Auto-generated method stub return true; } /** * @param groupPosition * @param childPosition * @return */ @Override public boolean isChildSelectable(int groupPosition, int childPosition) { // TODO Auto-generated method stub return true; } private SimpleAdapter getMeauAdapter(int groupPosition) { List<Map<String, Object>> data = new ArrayList<Map<String, Object>>(); int len = treeNodes.get(groupPosition).childList.size(); for (int i = 0; i < len; i ) { Map<String, Object> map = new HashMap<String, Object>(); map.put("itemName", treeNodes.get(groupPosition).childList.get(i) .get("name")); map.put("itemId", treeNodes.get(groupPosition).childList.get(i) .get("id")); map.put("itemImg", treeNodes.get(groupPosition).childList.get(i) .get("img")); data.add(map); } simpleAdapter = new SimpleAdapter(context, data, R.layout.childitem, new String[] { "itemImg", "itemName", "itemId" }, new int[] { R.id.child_img, R.id.child_tv }); return simpleAdapter; } /** * @param arg0 * @param arg1 * @param arg2 * @param arg3 */ @Override public void onItemClick(AdapterView<?> parent, View arg1, int position, long arg3) { Map<String, Object> map = (Map<String, Object>) parent .getItemAtPosition(position); String name = (String) map.get("itemName"); Toast.makeText(context, name "", 0).show(); } }
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