android ExpandableListView 四级树形目录

package com.hokas.expandablelistview; import android.content.Context; import android.util.Log; import android.view.Gravity; import android.view.View; import android.view.ViewGroup; import android.widget.AbsListView; import android.widget.BaseExpandableListAdapter; import android.widget.ExpandableListView; import android.widget.TextView; import java.util.List; /** * 三级级目录 * Created by hokas on 2015/11/4. */ public class VisitPollcyThreeAdapter extends BaseExpandableListAdapter { private Context context; private List<PollcyTwo> pollcyTwos; public VisitPollcyThreeAdapter(Context context,List<PollcyTwo> pollcyTwos) { this.context = context; this.pollcyTwos = pollcyTwos; } @Override public int getGroupCount() { return pollcyTwos.size(); } @Override public int getChildrenCount(int groupPosition) { return pollcyTwos.get(groupPosition).pollcyThrees.size(); } @Override public Object getGroup(int groupPosition) { return pollcyTwos.get(groupPosition); } @Override public Object getChild(int groupPosition, int childPosition) { return pollcyTwos.get(groupPosition).pollcyThrees.get(childPosition); } @Override public long getGroupId(int groupPosition) { return groupPosition; } @Override public long getChildId(int groupPosition, int childPosition) { return childPosition; } @Override public boolean hasStableIds() { return true; } private TextView getTextView(){ AbsListView.LayoutParams layoutParams = new AbsListView.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,64); TextView textView = new TextView(context); textView.setLayoutParams(layoutParams); textView.setGravity(Gravity.CENTER_VERTICAL | Gravity.LEFT); textView.setPadding(80, 0, 0, 0); textView.setTextSize(20); return textView; } @Override public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) { TextView textView = getTextView(); textView.setText(pollcyTwos.get(groupPosition).content); Log.d("VisitPollcyThreeAdapter", pollcyTwos.get(groupPosition).content); return textView; } @Override public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) { CustExpListview listView = new CustExpListview(context); VisitPollcyFourAdapter visitPollcyThreeAdapter = new VisitPollcyFourAdapter(context,pollcyTwos.get(groupPosition).pollcyThrees); listView.setAdapter(visitPollcyThreeAdapter); listView.setGroupIndicator(null); return listView; } @Override public boolean isChildSelectable(int groupPosition, int childPosition) { return true; } private class CustExpListview extends ExpandableListView { public CustExpListview(Context context) { super(context); } protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { widthMeasureSpec = MeasureSpec.makeMeasureSpec(1000, MeasureSpec.AT_MOST); heightMeasureSpec = MeasureSpec.makeMeasureSpec(700, MeasureSpec.AT_MOST); super.onMeasure(widthMeasureSpec, heightMeasureSpec); } } }