仅作记录代码用，功能未能测试成功，在低版本上不存在 sHasPermanentMenuKey 属性，会出现 java.lang.NoSuchFieldException: sHasPermanentMenuKey 异常

        try {

            ViewConfiguration config = ViewConfiguration.get(this);

            Field menuKeyField = ViewConfiguration.class.getDeclaredField("sHasPermanentMenuKey");

            if (menuKeyField != null) {

                menuKeyField.setAccessible(true);

                menuKeyField.setBoolean(config, false);

            }

        } catch (Exception e) {

            e.printStackTrace();

        }