Android可展开的列表组件(ExpandableListView)模板

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主程序

ExpandableListAdapter adapter =new BaseExpandableListAdapter() {            int[] logos = new int[]                    {                            R.drawable.p,                            R.drawable.z,                            R.drawable.t                    };            String[] armTypes = new String[]                    { "神族兵种", "虫族兵种", "人族兵种"};            String[][] arms = new String[][]                    {                            { "狂战士", "龙骑士", "黑暗圣堂", "电兵" },                            { "小狗", "刺蛇", "飞龙", "自爆飞机" },                            { "机枪兵", "护士MM" , "幽灵" }                    };            @Override            public Object getChild(int groupPosition, int childPosition)            {                return arms[groupPosition][childPosition];            }            @Override            public long getChildId(int groupPosition, int childPosition)            {                return childPosition;            }            @Override            public int getChildrenCount(int groupPosition)            {                return arms[groupPosition].length;            }            private TextView getTextView()            {                TextView textView = new TextView(MainActivity.this);                textView.setGravity(Gravity.CENTER_VERTICAL | Gravity.LEFT);//设置textView中文字的对齐方式                textView.setTextSize(20);                return textView;            }            // 该方法决定每个子选项的外观            @Override            public View getChildView(int groupPosition, int childPosition,                                     boolean isLastChild, View convertView, ViewGroup parent)            {                TextView textView = getTextView();                AbsListView.LayoutParams lp = new AbsListView.LayoutParams(                        ViewGroup.LayoutParams.MATCH_PARENT, 64);//设置TextView的宽和高                textView.setLayoutParams(lp);                textView.setPadding(120, 0, 0, 0);//设置TextView左右上下的边距                textView.setTextSize(12);                textView.setText(getChild(groupPosition, childPosition)                        .toString());                return textView;            }            // 获取指定组位置处的组数据            @Override            public Object getGroup(int groupPosition)            {                return armTypes[groupPosition];            }            @Override            public int getGroupCount()            {                return armTypes.length;            }            @Override            public long getGroupId(int groupPosition)            {                return groupPosition;            }            // 该方法决定每个组选项的外观            @Override            public View getGroupView(int groupPosition, boolean isExpanded,                                     View convertView, ViewGroup parent)            {               LinearLayout ll = new LinearLayout(MainActivity.this);                ll.setOrientation(LinearLayout.HORIZONTAL);                ImageView logo = new ImageView(MainActivity.this);                logo.setImageResource(logos[groupPosition]);                ll.addView(logo);                TextView textView = getTextView();                AbsListView.LayoutParams lp = new AbsListView.LayoutParams(                        ViewGroup.LayoutParams.MATCH_PARENT, 200);                textView.setLayoutParams(lp);                textView.setPadding(12, 0, 0, 0);                textView.setText(getGroup(groupPosition).toString());                ll.addView(textView);                return ll;            }            @Override            public boolean isChildSelectable(int groupPosition,                                             int childPosition)            {                return true;            }            @Override            public boolean hasStableIds()            {                return true;            }        };        ExpandableListView expandListView = (ExpandableListView) findViewById(R.id.list);        expandListView.setAdapter(adapter);

布局文件

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical"    android:layout_width="match_parent"    android:layout_height="match_parent">    <ExpandableListView        android:id="@+id/list"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:childIndicator="@drawable/ic_launcher"/></LinearLayout>

这里写图片描述

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