Android中的Menu

Android中的设置按钮：长按或点击菜单键

1.长按选项：

布局文件：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MenuActivity" >

    <TextView
        android:id="@+id/menutext1"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="第一种方法创建菜单"
        android:textSize="20sp" />

    <TextView
        android:id="@+id/menutext2"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="第二种方法创建菜单"
        android:textSize="20sp" />

    <ListView
        android:id="@+id/menulist"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_marginTop="50dp" >
    </ListView>

</LinearLayout>

实现过程：

private ListView list;
    private TextView lv;

    String[] str = { "TextView", "EditView", "Toast(消息框)" };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_menu);

        list = (ListView) findViewById(R.id.menulist);
        ArrayAdapter<String> arr = new ArrayAdapter<String>(this,
                android.R.layout.simple_list_item_1, str);
        list.setAdapter(arr);

        list.setOnCreateContextMenuListener(new OnCreateContextMenuListener() {

            @Override
            public void onCreateContextMenu(ContextMenu menu, View v,
                    ContextMenuInfo menuInfo) {
                menu.clear();
                menu.clearHeader();
                menu.setHeaderIcon((R.drawable.ic_launcher));
                menu.setHeaderTitle("我是ListView");
                menu.add(3, 6, 0, "删除");
                menu.add(3, 7, 1, "修改");
            }
        });
        // 第一种方法
        TextView tv = (TextView) findViewById(R.id.menutext1);
        this.registerForContextMenu(tv);
        // 第二种方法
        lv = (TextView) findViewById(R.id.menutext2);
        lv.setOnCreateContextMenuListener(new OnCreateContextMenuListener() {

            @Override
            public void onCreateContextMenu(ContextMenu menu, View v,
                    ContextMenuInfo menuInfo) {
                menu.setHeaderTitle("长度-ContextMenu");
                menu.add(0, 1, 0, "复制");
                SubMenu sb = menu.addSubMenu("查找");
                sb.add(1, 2, 0, "按id查找");
                sb.add(1, 3, 0, "按名称查找");
            }
        });
    }

2.长按菜单项：

private ListView list;
    private TextView lv;

    String[] str = { "TextView", "EditView", "Toast(消息框)" };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_menu);

        list = (ListView) findViewById(R.id.menulist);
        ArrayAdapter<String> arr = new ArrayAdapter<String>(this,
                android.R.layout.simple_list_item_1, str);
        list.setAdapter(arr);

        list.setOnCreateContextMenuListener(new OnCreateContextMenuListener() {

            @Override
            public void onCreateContextMenu(ContextMenu menu, View v,
                    ContextMenuInfo menuInfo) {
                menu.clear();
                menu.clearHeader();
                menu.setHeaderIcon((R.drawable.ic_launcher));
                menu.setHeaderTitle("我是ListView");
                menu.add(3, 6, 0, "删除");
                menu.add(3, 7, 1, "修改");
            }
        });
        // 第一种方法
        TextView tv = (TextView) findViewById(R.id.menutext1);
        this.registerForContextMenu(tv);
        // 第二种方法
        lv = (TextView) findViewById(R.id.menutext2);
        lv.setOnCreateContextMenuListener(new OnCreateContextMenuListener() {

            @Override
            public void onCreateContextMenu(ContextMenu menu, View v,
                    ContextMenuInfo menuInfo) {
                menu.setHeaderTitle("长度-ContextMenu");
                menu.add(0, 1, 0, "复制");
                SubMenu sb = menu.addSubMenu("查找");
                sb.add(1, 2, 0, "按id查找");
                sb.add(1, 3, 0, "按名称查找");
            }
        });
    }

Over