上下文菜单

public class MainActivity extends Activity {    private ImageView imageView;    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        imageView = (ImageView) findViewById(R.id.imageView1);        //给图片控件注册上下文菜单（当长按图片的时候会弹出一个上下文菜单）        registerForContextMenu(imageView);    }    public void onCreateContextMenu(ContextMenu menu, View v,            ContextMenuInfo menuInfo) {        //给菜单添加选项，        //参数1:分组 2:ID 3.排列顺序 4.标题        menu.add(1, 1, 1, "删除");        menu.add(1, 3, 3, "另存为");        //给分享选项添加子菜单        SubMenu subMenu =menu.addSubMenu(1, 2, 2, "分享");        subMenu.add(1, 1, 1, "分享到腾讯微博");        subMenu.add(1, 2, 2, "分享到新浪微博");        super.onCreateContextMenu(menu, v, menuInfo);    }    public boolean onContextItemSelected(MenuItem item) {        return super.onContextItemSelected(item);    }}