ExpandableListView使用

来源：互联网发布：vfp编程实例及提高编辑：程序博客网时间：2024/05/06 02:03

public class MainActivity extends Activity {    private ExpandableListView lv;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        lv=(ExpandableListView) findViewById(R.id.exlistview);        MyAdapter adapter=new MyAdapter(this);        lv.setAdapter(adapter);        lv.setOnChildClickListener(new OnChildClickListener() {            @Override            public boolean onChildClick(ExpandableListView arg0, View arg1, int arg2,                    int arg3, long arg4) {                // TODO Auto-generated method stub                return false;            }        });    }}

自定义adapter

public class MyAdapter extends BaseExpandableListAdapter{    private Context context;    private String [] st={"家人","朋友"};    private String [][] fimily={{"爸爸","妈妈","哥哥"},{"小王","小明","小红"}};    MyAdapter(Context context){        this.context=context;    }    @Override    public Object getChild(int arg0, int arg1) {        // TODO Auto-generated method stub        return fimily[arg0][arg1];    }    @Override    public long getChildId(int arg0, int arg1) {        // TODO Auto-generated method stub        return arg1;    }    @Override    public int getChildrenCount(int arg0) {        // TODO Auto-generated method stub        return fimily[arg0].length;    }    @Override    public Object getGroup(int arg0) {        // TODO Auto-generated method stub        return st[arg0];    }    @Override    public int getGroupCount() {        // TODO Auto-generated method stub        return st.length;    }    @Override    public long getGroupId(int arg0) {        return arg0;    }    @Override    public View getChildView(int arg0, int arg1, boolean arg2, View convertView,            ViewGroup arg4) {        viewHolder holder;        if(convertView==null){            LayoutInflater inflater = LayoutInflater.from(context);            convertView = inflater.inflate(R.layout.childview, null);            holder=new viewHolder();            holder.tv=(TextView) convertView.findViewById(R.id.title);            convertView.setTag(holder);        }else{            holder=(viewHolder) convertView.getTag();        }        holder.tv.setText(fimily[arg0][arg1]);        return convertView;    }    @Override    public View getGroupView(int arg0, boolean arg1, View convertView, ViewGroup v) {        viewHolder holder;        if(convertView==null){            LayoutInflater inflater = LayoutInflater.from(context);            convertView = inflater.inflate(R.layout.grovview, null);            holder=new viewHolder();            holder.tv=(TextView) convertView.findViewById(R.id.titles);            convertView.setTag(holder);        }else{            holder=(viewHolder) convertView.getTag();        }        holder.tv.setText(st[arg0]);        return convertView;    }    @Override    public boolean isChildSelectable(int arg0, int arg1) {        // 二级标签能否被选中        return true;    }    @Override    public boolean hasStableIds() {        // TODO Auto-generated method stub        return false;    }    class viewHolder{        TextView tv;    }}

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