ExpandableListView中不同条目的位置不同的显示位置

项目需要，要在ExpandableListView中根据父类条目的位置对子类条目左右显示位置进行调整。

经过试验，最总效果如下：

经过最近开发总结得出，RelativeLayout的可用性要远远超过LinearLayout。

LinearLayout相对来说是比较简单的，入门快，能够快速搭建简单的效果图，但是遇到复杂UI时，使用LinearLayout往往是得不到很好的解决方案的，而这时候RelativeLayout就显得非常的灵活，迎刃而解。建议对RelativeLayout深入了解。

main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="@color/background"
    android:orientation="vertical" >

    <ExpandableListView
        android:id="@+id/ExpandableListView01"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:childDivider="@drawable/list_separator"
        android:clickable="true"
        android:dividerHeight="2.0dip"
        android:fadeScrollbars="true"
        android:fadingEdge="none"
        android:groupIndicator="@null"
        android:paddingLeft="4.0dip"
        android:paddingRight="4.0dip"
        android:cacheColorHint="#00000000"
        android:scrollbarAlwaysDrawHorizontalTrack="true"
        android:scrollbarStyle="outsideOverlay" >
    </ExpandableListView>
    <!-- android:cacheColorHint="#00000000" 取消上下滑动时会出现黑色底色的情况  
    android:listSelector属性，默认会显示选中的item为橙黄底色-->

</LinearLayout>

TreeViewAdapter.java

package com.yang.adapter;

import android.content.Context;
import android.graphics.Color;
import android.text.TextPaint;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.RelativeLayout;
import android.widget.TextView;

import com.yang.R;

public class TreeViewAdapter extends BaseExpandableListAdapter {

	private String[] groups = { "草帽海贼团", "四 皇", "王下七武海", "海军本部" };
	private String[][] children = {
			{ "蒙其·D·路飞 ", "罗罗诺亚·索隆 ", "娜美 ", "乌索普 ", "山治", "乔巴", "弗兰奇", "布鲁克",
					"妮可·罗宾" },
			{ "红发海贼团", "白胡子海贼团", "凯多", "夏洛特·玲玲" },
			{ "乔拉可尔·密佛格", "巴索罗米·熊", "唐吉诃德·杜夫拉明高", "波雅·汉库克", "沙·克洛克达尔",
					"海侠·吉贝尔", "月光·莫利亚" }, { "元帅", "大将", "中将", "准将" } };

	private LayoutInflater inflater;
	private LayoutInflater inflater1;

	public TreeViewAdapter(Context c) {
		this.inflater = LayoutInflater.from(c);
		this.inflater1 = LayoutInflater.from(c);
	}

	@Override
	public Object getChild(int groupPosition, int childPosition) {
		return childPosition;
	}

	@Override
	public long getChildId(int groupPosition, int childPosition) {
		return 0;
	}

	class ViewHolder {
		TextView TextView001;
		TextView TextView002;
	}

	@Override
	public View getChildView(final int groupPosition, final int childPosition,
			boolean isLastChild, View convertView, ViewGroup parent) {
		ViewHolder holder = null;
		if (convertView == null) {
			convertView = inflater1.inflate(R.layout.child, null);
			holder = new ViewHolder();
			holder.TextView001 = (TextView) convertView
					.findViewById(R.id.TextView001);
			holder.TextView002 = (TextView) convertView
					.findViewById(R.id.TextView002);
			//设置为粗体
			TextPaint tp = holder.TextView002.getPaint();
			tp.setFakeBoldText(true);
			holder.TextView002.setTextColor(Color.RED);

			convertView.setTag(holder);
		} else {
			holder = (ViewHolder) convertView.getTag();
		}
		holder.TextView001.setText(children[groupPosition][childPosition]);
		if (groupPosition % 2== 0 ) {
			//关键设置代码
			RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(
					RelativeLayout.LayoutParams.WRAP_CONTENT,
					RelativeLayout.LayoutParams.WRAP_CONTENT);
			params.addRule(RelativeLayout.RIGHT_OF, holder.TextView001.getId());
			holder.TextView002.setLayoutParams(params);
			holder.TextView002.setText("牛");
		} else {
			//关键设置代码
			RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(
					RelativeLayout.LayoutParams.WRAP_CONTENT,
					RelativeLayout.LayoutParams.WRAP_CONTENT);
			params.addRule(RelativeLayout.ALIGN_PARENT_RIGHT,
					RelativeLayout.TRUE);
			holder.TextView002.setLayoutParams(params);
			holder.TextView002.setText("厉害");
		}

		return convertView;
	}

	@Override
	public int getChildrenCount(int groupPosition) {
		return children[groupPosition].length;
	}

	@Override
	public Object getGroup(int groupPosition) {
		return "dd";
	}

	@Override
	public int getGroupCount() {
		return groups.length;
	}

	@Override
	public long getGroupId(int groupPosition) {
		return groupPosition;
	}

	@Override
	public View getGroupView(int groupPosition, boolean isExpanded,
			View convertView, ViewGroup parent) {
		TextView textview = null;
		if (convertView == null) {
			convertView = inflater.inflate(R.layout.parent, null);
			textview = (TextView) convertView.findViewById(R.id.TextView01);
			convertView.setTag(textview);
		} else {
			textview = (TextView) convertView.getTag();
		}

		textview.setText(groups[groupPosition]);
		return convertView;
	}

	@Override
	public boolean hasStableIds() {
		return false;
	}

	@Override
	public boolean isChildSelectable(int groupPosition, int childPosition) {
		return false;
	}
}

源码下载地址