android学习笔记之三菜单
1,
? a,创建.重写public boolean onCreateOptionsMenu(Menu menu)
??? menu.add添加菜单项
? b,监听菜单选中事件.重写public boolean onOptionsItemSelected(MenuItem item)//item.getItemId()为菜单项的id
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2,带子菜单的菜单
?重写public boolean onCreateOptionsMenu(Menu menu)
?menu.addSubMenu(CharSequence title)返回父菜单SubMenu,SubMenu.add添加其下级菜单
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3,从XML加载菜单
?getMenuInflater()返回MenuInflater实例或 new MenuInflater(Context context)
?MenuInflater.inflate(int menuRes, Menu menu) 加载XML
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4,上下文菜单
?1,registerForContextMenu(View v)注册要显示上下文菜单的控件
?2,重写public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) 创建上下文菜单
