Android ListView长按d出菜单二种实现方式示例

概述复制代码代码如下:/***知识点1：ListViewitem:两种长按d出菜单方式*知识点2：ListViewSimpleAdapter的使用* 知识点3：在java代码中创建一个ListView*/

复制代码 代码如下:
/**

* 知识点1：ListVIEw item:两种长按d出菜单方式
* 知识点2：ListVIEw SimpleAdapter的使用
* 知识点 3：在java代码中创建一个ListVIEw
*/

public class ListOnLongClickActivity extends Activity {
        private linearLayout myListVIEwlayout;
        private ListVIEw mListVIEw;
        SimpleAdapter adapter;
        public int MID;

        // 创建一个List对象，用来存放列表项的每一行map信息
        List<Map<String,Object>> List = new ArrayList<Map<String,Object>>();

        @OverrIDe
        public voID onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
                setContentVIEw(R.layout.main);

                myListVIEwlayout = (linearLayout) findVIEwByID(R.ID.myListVIEwlayout);
                mListVIEw = new ListVIEw(this);
                // 创建布局参数
                linearLayout.LayoutParams ListvIEwParams = new linearLayout.LayoutParams(
                                linearLayout.LayoutParams.FILL_PARENT,
                                linearLayout.LayoutParams.FILL_PARENT);
                // 当滑动列表上，默认显示的黑色
                mListVIEw.setCachecolorHint(color.WHITE);
                // 将列表添加到流式布局myListVIEwlayout中
                myListVIEwlayout.addVIEw(mListVIEw,ListvIEwParams);

                FillListData();

                // 列表现的单机事件
                mListVIEw.setonItemClickListener(new OnItemClickListener() {

                        @OverrIDe
                        public voID onItemClick(AdapterVIEw<?> arg0,VIEw arg1,
                                        int position,long ID) {
                                /*
                                 * 点击列表项时触发onItemClick方法，四个参数含义分别为
                                 * arg0：发生单击事件的AdapterVIEw
                                 * arg1：AdapterVIEw中被点击的VIEw 
                                 * position：当前点击的行在adapter的下标
                                 * ID：当前点击的行的ID
                                 */
                                Toast.makeText(ListOnLongClickActivity.this,
                                                "您选择的是" + List.get(position).get("name").toString(),
                                                Toast.LENGTH_SHORT).show();
                        }
                });

                /**
                 * Item 长按方式d出菜单多选方式1
                 * Item 长按方式d出菜单多选方式2
                 * ItemOnLongClick1()与ItemOnLongClick2()不共存，按实际需要选择
                 */
        //        ItemOnLongClick1();
                ItemOnLongClick2();
        }

        // 填充ListVIEw资源
        private voID FillListData() {

                adapter = new SimpleAdapter(ListOnLongClickActivity.this,
                                getListData(),R.layout.ListvIEwrow,new String[] { "name",
                                                "price" },new int[] { R.ID.tv_name,R.ID.tv_price });
                mListVIEw.setAdapter(adapter);
        }

        private List<Map<String,Object>> getListData() {

                Map<String,Object> _map = new HashMap<String,Object>();
                _map.put("name","小米");
                _map.put("price","2350元");
                List.add(_map);

                _map = new HashMap<String,"HTC G18");
                _map.put("price","3340元");
                List.add(_map);

                _map = new HashMap<String,"iphone 5");
                _map.put("price","5450元");
                List.add(_map);

                _map = new HashMap<String,"iPhone 4S");
                _map.put("price","4650元");
                List.add(_map);

                _map = new HashMap<String,"MOTO ME525");
                _map.put("price","1345元");
                List.add(_map);
                return List;

        }

        private voID ItemOnLongClick1() {
//注：setonCreateContextMenuListener是与下面onContextItemSelected配套使用的
                mListVIEw
                                .setonCreateContextMenuListener(new OnCreateContextMenuListener() {

                                        public voID onCreateContextMenu(ContextMenu menu,VIEw v,
                                                        ContextMenuInfo menuInfo) {
                                                menu.add(0,"购买");
                                                menu.add(0,1,"收藏");
                                                menu.add(0,2,"对比");

                                        }
                                });
        }

        // 长按菜单响应函数
        public boolean onContextItemSelected(MenuItem item) {

                AdapterVIEw.AdapterContextMenuInfo info = (AdapterVIEw.AdapterContextMenuInfo) item
                                .getMenuInfo();
                MID = (int) info.ID;// 这里的info.ID对应的就是数据库中_ID的值

                switch (item.getItemID()) {
                case 0:
                        // 添加 *** 作
                        Toast.makeText(ListOnLongClickActivity.this,
                                        "添加",
                                        Toast.LENGTH_SHORT).show();
                        break;

                case 1:
                        // 删除 *** 作
                        break;

                case 2:
                        // 删除ALL *** 作
                        break;

                default:
                        break;
                }

                return super.onContextItemSelected(item);

        }

        private voID ItemOnLongClick2() {
                mListVIEw.setonItemLongClickListener(new OnItemLongClickListener() {

                        @OverrIDe
                        public boolean onItemLongClick(AdapterVIEw<?> arg0,
                                        final int arg2,long arg3) {
                                List.remove(arg2);
                                new AlertDialog.Builder(ListOnLongClickActivity.this)
                                                .setTitle("对Item进行 *** 作")
                                                .setItems(R.array.arrcontent,
                                                                new DialogInterface.OnClickListener() {
                                                                        public voID onClick(DialogInterface dialog,
                                                                                        int which) {
                                                                                String[] PK = getResources()
                                                                                                .getStringArray(
                                                                                                                R.array.arrcontent);
                                                                                Toast.makeText(
                                                                                                ListOnLongClickActivity.this,
                                                                                                PK[which],Toast.LENGTH_LONG)
                                                                                                .show();
                                                                                if (PK[which].equals("删除")) {
                                                                                        // 按照这种方式做删除 *** 作，这个if内的代码有BUG，实际代码中按需 *** 作
                                                                                        List.remove(arg2);
                                                                                        adapter = (SimpleAdapter) mListVIEw
                                                                                                        .getAdapter();
                                                                                        if (!adapter.isEmpty()) {
                                                                                                adapter.notifyDataSetChanged(); // 实现数据的实时刷新
                                                                                        }
                                                                                }
                                                                        }
                                                                })
                                                .setNegativebutton("取消",
                                                                                        int which) {
                                                                                // Todo auto-generated method stub

                                                                        }
                                                                }).show();
                                return true;
                        }
                });

        }
}

 

-----------
ListvIEwrow.xml

代码片段， <?xml version="1.0" enCoding="utf-8"?>
<linearLayout xmlns:androID="http://schemas.androID.com/apk/res/androID"
    androID:layout_wIDth="match_parent"
    androID:layout_height="match_parent"
    androID:background="@drawable/ListvIEwbg"
    androID:orIEntation="vertical" >

    <TextVIEw
        androID:ID="@+ID/tv_name"
        androID:layout_wIDth="fill_parent"
        androID:layout_height="wrap_content"
        androID:textcolor="@androID:color/black" />

    <TextVIEw
        androID:ID="@+ID/tv_price"
        androID:layout_wIDth="fill_parent"
        androID:layout_height="wrap_content"
        androID:textcolor="@androID:color/black" />

</linearLayout>

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